diff --git a/crates/wit-bindgen-go/src/interface.rs b/crates/wit-bindgen-go/src/interface.rs index e25f5667c..c9823b03f 100644 --- a/crates/wit-bindgen-go/src/interface.rs +++ b/crates/wit-bindgen-go/src/interface.rs @@ -505,7 +505,7 @@ impl InterfaceGenerator<'_> { {slog}.Debug("reading list element", "i", i) vs[i], err = "#, ); - self.print_read_ty(ty, "r", &format!("{path}, i")); + self.print_read_ty(ty, "r", &format!("append({path}, i)")); self.push_str("\n"); uwrite!( self.src, @@ -544,7 +544,7 @@ impl InterfaceGenerator<'_> { {slog}.Debug("reading `option::some` payload") v, err := "#, ); - self.print_read_ty(ty, "r", &format!("{path}, 1")); + self.print_read_ty(ty, "r", &format!("append({path}, 1)")); self.push_str("\n"); uwrite!( self.src, @@ -553,7 +553,7 @@ impl InterfaceGenerator<'_> { }} return "#, ); - self.print_result_element_ptr(ty, false); + self.print_option_element_ptr(ty, false); uwrite!( self.src, r#"v, nil @@ -581,10 +581,10 @@ impl InterfaceGenerator<'_> { ); self.push_str("switch status {\n"); self.push_str("case 0:\n"); - if let Some(ref ty) = ty.ok { + if let Some(ref ok) = ty.ok { uwriteln!(self.src, r#"{slog}.Debug("reading `result::ok` payload")"#); self.push_str("v, err := "); - self.print_read_ty(ty, "r", &format!("{path}, 0")); + self.print_read_ty(ok, "r", &format!("append({path}, 0)")); self.push_str("\n"); uwriteln!( self.src, @@ -592,17 +592,22 @@ impl InterfaceGenerator<'_> { return nil, fmt.Errorf("failed to read `result::ok` value: %w", err) }}"#, ); + self.push_str("return &"); + self.print_result(ty); + self.push_str("{ Ok: "); + self.print_result_element_ptr(ok, false); } else { self.push_str("var v struct{}\n"); + self.push_str("return &"); + self.print_result(ty); + self.push_str("{ Ok: &"); } - self.push_str("return &"); - self.print_result(ty); - self.push_str("{ Ok: &v }, nil\n"); + self.push_str("v }, nil\n"); self.push_str("case 1:\n"); if let Some(ref err) = ty.err { uwriteln!(self.src, r#"{slog}.Debug("reading `result::err` payload")"#); self.push_str("v, err := "); - self.print_read_ty(err, "r", &format!("{path}, 1")); + self.print_read_ty(err, "r", &format!("append({path}, 1)")); self.push_str("\n"); uwriteln!( self.src, @@ -633,7 +638,7 @@ impl InterfaceGenerator<'_> { fn print_read_tuple(&mut self, ty: &Tuple, reader: &str, path: &str) { match ty.types.as_slice() { [] => self.push_str("struct{}{}, nil"), - [ty] => self.print_read_ty(ty, reader, &format!("{path}, 0")), + [ty] => self.print_read_ty(ty, reader, &format!("append({path}, 0)")), _ => { let wrpc = self.deps.wrpc(); @@ -652,7 +657,7 @@ impl InterfaceGenerator<'_> { r#"{slog}.Debug("reading tuple element {i}") v.V{i}, err = "# ); - self.print_read_ty(ty, "r", &format!("{path}, {i}")); + self.print_read_ty(ty, "r", &format!("append({path}, {i})")); self.push_str("\n"); uwriteln!( self.src, @@ -667,6 +672,124 @@ impl InterfaceGenerator<'_> { } } + fn print_read_future(&mut self, ty: &Option, reader: &str, path: &str) { + match ty { + Some(ty) if self.is_list_of(Type::U8, ty) => { + let bytes = self.deps.bytes(); + let fmt = self.deps.fmt(); + let slog = self.deps.slog(); + let wrpc = self.deps.wrpc(); + + uwriteln!( + self.src, + r#"func(r {wrpc}.IndexReader, path ...uint32) ({wrpc}.ReadCompleter, error) {{ + {slog}.Debug("reading byte list future status byte") + status, err := r.ReadByte() + if err != nil {{ + return nil, {fmt}.Errorf("failed to read byte list future status byte: %w", err) + }} + switch status {{ + case 0: + r, err = r.Index(path...) + if err != nil {{ + return nil, {fmt}.Errorf("failed to index reader: %w", err) + }} + return {wrpc}.NewByteStreamReader({wrpc}.NewPendingByteReader(r)), nil + case 1: + {slog}.Debug("reading ready byte list future contents") + buf, err := "# + ); + self.print_read_byte_list("r"); + uwrite!( + self.src, + r#" + if err != nil {{ + return nil, {fmt}.Errorf("failed to read ready byte list future contents: %w", err) + }} + {slog}.Debug("read ready byte list future contents", "len", len(buf)) + return {wrpc}.NewCompleteReader({bytes}.NewReader(buf)), nil + default: + return nil, {fmt}.Errorf("invalid byte list future status byte %d", status) + }} +}}({reader}"# + ); + if !path.is_empty() { + self.src.push_str(", "); + self.src.push_str(path); + self.src.push_str("..."); + } + self.src.push_str(")\n"); + } + Some(ty) => { + let fmt = self.deps.fmt(); + let slog = self.deps.slog(); + let wrpc = self.deps.wrpc(); + + uwrite!( + self.src, + r#"func(r {wrpc}.IndexReader, path ...uint32) ({wrpc}.ReceiveCompleter["# + ); + self.print_opt_ty(ty, true); + uwrite!( + self.src, + r#"], error) {{ + {slog}.Debug("reading future status byte") + status, err := r.ReadByte() + if err != nil {{ + return nil, {fmt}.Errorf("failed to read future status byte: %w", err) + }} + switch status {{ + case 0: + r, err = r.Index(path...) + if err != nil {{ + return nil, {fmt}.Errorf("failed to index reader: %w", err) + }} + return {wrpc}.NewDecodeReceiver(r, func(r {wrpc}.IndexReader) ("# + ); + self.print_opt_ty(ty, true); + uwrite!( + self.src, + r#", error) {{ + {slog}.Debug("reading pending future element") + v, err := "# + ); + self.print_read_ty(ty, "r", "[]uint32{0}"); + uwriteln!( + self.src, + r#" + if err != nil {{ + return nil, {fmt}.Errorf("failed to read pending future element: %w", err) + }} + return v, nil + }}), nil + case 1: + {slog}.Debug("reading ready future contents") + v, err := "# + ); + self.print_read_ty(ty, "r", path); + uwrite!( + self.src, + r#" + if err != nil {{ + return nil, {fmt}.Errorf("failed to read ready future contents: %w", err) + }} + return {wrpc}.NewCompleteReceiver(v), nil + default: + return nil, {fmt}.Errorf("invalid future status byte %d", status) + }} +}}({reader}"# + ); + if !path.is_empty() { + self.src.push_str(", "); + self.src.push_str(path); + self.src.push_str("..."); + } + self.src.push_str(")\n"); + } + None => panic!("futures with no element types are not supported"), + } + } + fn print_read_stream(&mut self, Stream { element, .. }: &Stream, reader: &str, path: &str) { match element { Some(ty) if self.is_ty(Type::U8, ty) => { @@ -695,7 +818,7 @@ impl InterfaceGenerator<'_> { buf, err := "# ); self.print_read_byte_list("r"); - uwriteln!( + uwrite!( self.src, r#" if err != nil {{ @@ -706,8 +829,14 @@ impl InterfaceGenerator<'_> { default: return nil, {fmt}.Errorf("invalid stream status byte %d", status) }} -}}({reader}, {path})"# +}}({reader}"# ); + if !path.is_empty() { + self.src.push_str(", "); + self.src.push_str(path); + self.src.push_str("..."); + } + self.src.push_str(")\n"); } Some(ty) => { let errors = self.deps.errors(); @@ -769,7 +898,7 @@ impl InterfaceGenerator<'_> { {slog}.Debug("reading pending stream element", "i", total) v, err := "# ); - self.print_read_ty(ty, "r", "total"); + self.print_read_ty(ty, "r", "[]uint32{total}"); uwriteln!( self.src, r#" @@ -786,7 +915,7 @@ impl InterfaceGenerator<'_> { vs, err := "# ); self.print_read_list(ty, "r", path); - uwriteln!( + uwrite!( self.src, r#" if err != nil {{ @@ -797,8 +926,14 @@ impl InterfaceGenerator<'_> { default: return nil, {fmt}.Errorf("invalid stream status byte %d", status) }} -}}({reader}, {path})"# +}}({reader}"# ); + if !path.is_empty() { + self.src.push_str(", "); + self.src.push_str(path); + self.src.push_str("..."); + } + self.src.push_str(")\n"); } None => panic!("streams with no element types are not supported"), } @@ -825,39 +960,58 @@ impl InterfaceGenerator<'_> { fn print_read_tyid(&mut self, id: TypeId, reader: &str, path: &str) { let ty = &self.resolve.types[id]; - if let Some(ref name) = ty.name { - let read = self.type_path_with_name(id, format!("Read{}", to_upper_camel_case(name))); - uwrite!(self.src, "{read}({reader})"); - return; - } match &ty.kind { - TypeDefKind::Record(_) => panic!("unsupported anonymous type reference: record"), - TypeDefKind::Resource => panic!("unsupported anonymous type reference: resource"), - TypeDefKind::Handle(Handle::Own(_ty)) => uwrite!( - self.src, - r#"0, {errors}.New("reading owned handles not supported yet")"#, - errors = self.deps.errors(), - ), - TypeDefKind::Handle(Handle::Borrow(_ty)) => uwrite!( - self.src, - r#"0, {errors}.New("reading borrowed handles not supported yet")"#, - errors = self.deps.errors(), - ), - TypeDefKind::Flags(_) => panic!("unsupported anonymous type reference: flags"), + TypeDefKind::Handle(Handle::Own(ty)) => { + let errors = self.deps.errors(); + self.src.push_str("("); + self.print_tyid(*ty, true); + uwrite!( + self.src, + r#")(nil), {errors}.New("reading owned handles not supported yet")"#, + ); + } + TypeDefKind::Handle(Handle::Borrow(ty)) => { + let errors = self.deps.errors(); + self.src.push_str("("); + self.print_tyid(*ty, true); + uwrite!( + self.src, + r#")(nil), {errors}.New("reading borrowed handles not supported yet")"#, + ); + } TypeDefKind::Tuple(ty) => self.print_read_tuple(ty, reader, path), - TypeDefKind::Variant(_) => panic!("unsupported anonymous variant"), - TypeDefKind::Enum(_) => panic!("unsupported anonymous type reference: enum"), TypeDefKind::Option(ty) => self.print_read_option(ty, reader, path), TypeDefKind::Result(ty) => self.print_read_result(ty, reader, path), TypeDefKind::List(ty) => self.print_read_list(ty, reader, path), - TypeDefKind::Future(_ty) => uwrite!( - self.src, - r#"nil, {errors}.New("reading futures not supported yet")"#, - errors = self.deps.errors(), - ), + TypeDefKind::Future(ty) => self.print_read_future(ty, reader, path), TypeDefKind::Stream(ty) => self.print_read_stream(ty, reader, path), - TypeDefKind::Type(t) => self.print_read_ty(t, reader, path), - TypeDefKind::Unknown => unreachable!(), + TypeDefKind::Type(ty) => self.print_read_ty(ty, reader, path), + _ => { + if let Some(ref name) = ty.name { + let read = + self.type_path_with_name(id, format!("Read{}", to_upper_camel_case(name))); + uwrite!(self.src, "{read}({reader}"); + if !path.is_empty() { + self.src.push_str(", "); + self.src.push_str(path); + self.src.push_str("..."); + } + self.src.push_str(")"); + return; + } + match &ty.kind { + TypeDefKind::Record(_) => { + panic!("unsupported anonymous type reference: record") + } + TypeDefKind::Resource => { + panic!("unsupported anonymous type reference: resource") + } + TypeDefKind::Flags(_) => panic!("unsupported anonymous type reference: flags"), + TypeDefKind::Variant(_) => panic!("unsupported anonymous variant"), + TypeDefKind::Enum(_) => panic!("unsupported anonymous type reference: enum"), + _ => unreachable!(), + } + } } } @@ -1397,6 +1551,182 @@ impl InterfaceGenerator<'_> { } } + fn print_write_future(&mut self, ty: &Option, name: &str, writer: &str) { + match ty { + Some(ty) if self.is_list_of(Type::U8, ty) => { + let bytes = self.deps.bytes(); + let fmt = self.deps.fmt(); + let io = self.deps.io(); + let math = self.deps.math(); + let slog = self.deps.slog(); + let wrpc = self.deps.wrpc(); + uwrite!( + self.src, + r#"func(v {wrpc}.ReadCompleter, w {wrpc}.ByteWriter) (write func({wrpc}.IndexWriter) error, err error) {{ + if v.IsComplete() {{ + defer func() {{ + body, ok := v.({io}.Closer) + if ok {{ + if cErr := body.Close(); cErr != nil {{ + if err == nil {{ + err = {fmt}.Errorf("failed to close ready byte list future: %w", cErr) + }} else {{ + slog.Warn("failed to close ready byte list future", "err", cErr) + }} + }} + }} + }}() + {slog}.Debug("writing byte list future `future::ready` status byte") + if err = w.WriteByte(1); err != nil {{ + return nil, {fmt}.Errorf("failed to write `future::ready` byte: %w", err) + }} + {slog}.Debug("reading ready byte list future contents") + var buf {bytes}.Buffer + var n int64 + n, err = {io}.Copy(&buf, v) + if err != nil {{ + return nil, {fmt}.Errorf("failed to read ready byte list future contents: %w", err) + }} + {slog}.Debug("writing ready byte list future contents", "len", n) + if err = {wrpc}.WriteByteList(buf.Bytes(), w); err != nil {{ + return nil, {fmt}.Errorf("failed to write ready byte list future contents: %w", err) + }} + return nil, nil + }} else {{ + {slog}.Debug("writing byte list future `future::pending` status byte") + if err = w.WriteByte(0); err != nil {{ + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + }} + return func(w {wrpc}.IndexWriter) (err error) {{ + defer func() {{ + body, ok := v.({io}.Closer) + if ok {{ + if cErr := body.Close(); cErr != nil {{ + if err == nil {{ + err = {fmt}.Errorf("failed to close pending byte list future: %w", cErr) + }} else {{ + {slog}.Warn("failed to close pending byte list future", "err", cErr) + }} + }} + }} + }}() + {slog}.Debug("reading pending byte list future contents") + chunk, err := {io}.ReadAll(chunk) + if err != nil {{ + return {fmt}.Errorf("failed to read pending byte list future: %w", err) + }} + if n > {math}.MaxUint32 {{ + return {fmt}.Errorf("pending byte list future length of %d overflows a 32-bit integer", n) + }} + {slog}.Debug("writing pending byte list future length", "len", n) + if err := {wrpc}.WriteUint32(uint32(n), w); err != nil {{ + return {fmt}.Errorf("failed to write pending byte list future length of %d: %w", n, err) + }} + _, err = w.Write(chunk[:n]) + if err != nil {{ + return {fmt}.Errorf("failed to write pending byte list future contents: %w", err) + }} + }}, nil + }} + }}({name}, {writer})"#, + ); + } + Some(ty) => { + let errgroup = self.deps.errgroup(); + let errors = self.deps.errors(); + let fmt = self.deps.fmt(); + let io = self.deps.io(); + let math = self.deps.math(); + let slog = self.deps.slog(); + let wrpc = self.deps.wrpc(); + uwrite!(self.src, "func(v {wrpc}.ReceiveCompleter[",); + self.print_opt_ty(ty, true); + uwrite!( + self.src, + r#"], w {wrpc}.ByteWriter) (write func({wrpc}.IndexWriter) error, err error) {{ + if v.IsComplete() {{ + defer func() {{ + body, ok := v.({io}.Closer) + if ok {{ + if cErr := body.Close(); cErr != nil {{ + if err == nil {{ + err = {fmt}.Errorf("failed to close ready future: %w", cErr) + }} else {{ + slog.Warn("failed to close ready future", "err", cErr) + }} + }} + }} + }}() + {slog}.Debug("writing future `future::ready` status byte") + if err = w.WriteByte(1); err != nil {{ + return nil, {fmt}.Errorf("failed to write `future::ready` byte: %w", err) + }} + {slog}.Debug("receiving ready future contents") + rx, err := v.Receive() + if err != nil && err != {io}.EOF {{ + return nil, {fmt}.Errorf("failed to receive ready future contents: %w", err) + }} + {slog}.Debug("writing ready future contents") + write, err := "#, + ); + self.print_write_ty(ty, "rx", "w"); + uwrite!( + self.src, + r#" + if err != nil {{ + return nil, {fmt}.Errorf("failed to write ready future contents: %w", err) + }} + return write, nil + }} else {{ + {slog}.Debug("writing future `future::pending` status byte") + if err := w.WriteByte(0); err != nil {{ + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + }} + return func(w {wrpc}.IndexWriter) (err error) {{ + defer func() {{ + body, ok := v.({io}.Closer) + if ok {{ + if cErr := body.Close(); cErr != nil {{ + if err == nil {{ + err = {fmt}.Errorf("failed to close pending future: %w", cErr) + }} else {{ + {slog}.Warn("failed to close pending future", "err", cErr) + }} + }} + }} + }}() + {slog}.Debug("receiving outgoing pending future contents") + rx, err := v.Receive() + if err != nil {{ + return {fmt}.Errorf("failed to receive outgoing pending future: %w", err) + }} + {slog}.Debug("writing pending future element") + write, err :="#, + ); + self.print_write_ty(ty, "rx", "w"); + uwrite!( + self.src, + r#" + if err != nil {{ + return {fmt}.Errorf("failed to write pending future element: %w", err) + }} + if write != nil {{ + w, err := w.Index(0) + if err != nil {{ + return {fmt}.Errorf("failed to index writer: %w", err) + }} + return write(w) + }} + return nil + }}, nil + }} + }}({name}, {writer})"#, + ); + } + None => panic!("streams with no element types are not supported"), + } + } + fn print_write_stream(&mut self, Stream { element, .. }: &Stream, name: &str, writer: &str) { match element { Some(ty) if self.is_ty(Type::U8, ty) => { @@ -1702,41 +2032,45 @@ impl InterfaceGenerator<'_> { fn print_write_tyid(&mut self, id: TypeId, name: &str, writer: &str) { let ty = &self.resolve.types[id]; - if ty.name.is_some() { - // TODO: Support async - uwrite!(self.src, "({name}).WriteToIndex({writer})"); - return; - } - match &ty.kind { - TypeDefKind::Record(_) => panic!("unsupported anonymous type reference: record"), - TypeDefKind::Resource => panic!("unsupported anonymous type reference: resource"), TypeDefKind::Handle(Handle::Own(_ty)) => uwrite!( self.src, - r#"0, {errors}.New("writing owned handles not supported yet")"#, + r#"(func({wrpc}.IndexWriter) error)(nil), func(any) error {{ return {errors}.New("writing owned handles not supported yet") }}({name})"#, errors = self.deps.errors(), + wrpc = self.deps.wrpc(), ), TypeDefKind::Handle(Handle::Borrow(_ty)) => uwrite!( self.src, - r#"0, {errors}.New("writing borrowed handles not supported yet")"#, + r#"(func({wrpc}.IndexWriter) error)(nil), func(any) error {{ return {errors}.New("writing borrowed handles not supported yet") }}({name})"#, errors = self.deps.errors(), + wrpc = self.deps.wrpc(), ), - TypeDefKind::Flags(_) => panic!("unsupported anonymous type reference: flags"), TypeDefKind::Tuple(ty) => self.print_write_tuple(ty, name, writer), - TypeDefKind::Variant(_) => panic!("unsupported anonymous variant"), - TypeDefKind::Enum(_) => panic!("unsupported anonymous type reference: enum"), TypeDefKind::Option(ty) => self.print_write_option(ty, name, writer), TypeDefKind::Result(ty) => self.print_write_result(ty, name, writer), TypeDefKind::List(ty) => self.print_write_list(ty, name, writer), - TypeDefKind::Future(_ty) => uwrite!( - self.src, - r#"0, {errors}.New("writing futures not supported yet")"#, - errors = self.deps.errors(), - ), + TypeDefKind::Future(ty) => self.print_write_future(ty, name, writer), TypeDefKind::Stream(ty) => self.print_write_stream(ty, name, writer), TypeDefKind::Type(ty) => self.print_write_ty(ty, name, writer), - TypeDefKind::Unknown => unreachable!(), + _ => { + if ty.name.is_some() { + uwrite!(self.src, "({name}).WriteToIndex({writer})"); + return; + } + match &ty.kind { + TypeDefKind::Record(_) => { + panic!("unsupported anonymous type reference: record") + } + TypeDefKind::Resource => { + panic!("unsupported anonymous type reference: resource") + } + TypeDefKind::Flags(_) => panic!("unsupported anonymous type reference: flags"), + TypeDefKind::Variant(_) => panic!("unsupported anonymous variant"), + TypeDefKind::Enum(_) => panic!("unsupported anonymous type reference: enum"), + _ => unreachable!(), + } + } } } @@ -1745,7 +2079,7 @@ impl InterfaceGenerator<'_> { Int::U8 => { uwrite!( self.src, - r#"func(r {wrpc}.ByteReader) (uint8, error) {{ + r#"func(r {io}.ByteReader) (uint8, error) {{ var x uint8 var s uint for i := 0; i < 2; i++ {{ @@ -1772,7 +2106,6 @@ impl InterfaceGenerator<'_> { fmt = self.deps.fmt(), io = self.deps.io(), slog = self.deps.slog(), - wrpc = self.deps.wrpc(), ); } Int::U16 => self.print_read_u16(reader), @@ -1838,7 +2171,7 @@ impl InterfaceGenerator<'_> { } } - fn is_ty(&mut self, expected: Type, ty: &Type) -> bool { + fn is_ty(&self, expected: Type, ty: &Type) -> bool { let mut ty = *ty; loop { if ty == expected { @@ -1854,7 +2187,24 @@ impl InterfaceGenerator<'_> { } } - fn async_paths_ty(&mut self, ty: &Type) -> (Vec>>, bool) { + fn is_list_of(&self, expected: Type, ty: &Type) -> bool { + let mut ty = *ty; + loop { + if let Type::Id(id) = ty { + match self.resolve.types[id].kind { + TypeDefKind::Type(t) => { + ty = t; + continue; + } + TypeDefKind::List(t) => return self.is_ty(expected, &t), + _ => return false, + } + } + return false; + } + } + + fn async_paths_ty(&self, ty: &Type) -> (Vec>>, bool) { if let Type::Id(ty) = ty { self.async_paths_tyid(*ty) } else { @@ -1862,7 +2212,7 @@ impl InterfaceGenerator<'_> { } } - fn async_paths_tyid(&mut self, id: TypeId) -> (Vec>>, bool) { + fn async_paths_tyid(&self, id: TypeId) -> (Vec>>, bool) { match &self.resolve.types[id].kind { TypeDefKind::List(ty) => { let mut paths = vec![]; @@ -2031,9 +2381,7 @@ impl InterfaceGenerator<'_> { let (_, (handler_methods, client_methods)) = traits.get_mut(&resource).unwrap(); let prev = mem::take(&mut self.src); - let sig = FnSig { - ..Default::default() - }; + let sig = FnSig::default(); self.print_docs_and_params(func, &sig); if let FunctionKind::Constructor(id) = &func.kind { let ty = &self.resolve.types[*id]; @@ -2059,9 +2407,7 @@ impl InterfaceGenerator<'_> { if matches!(func.kind, FunctionKind::Method(..)) { let prev = mem::take(&mut self.src); - let sig = FnSig { - ..Default::default() - }; + let sig = FnSig::default(); self.in_import = true; self.print_docs_and_params(func, &sig); self.src.push_str(" ("); @@ -2171,7 +2517,7 @@ impl InterfaceGenerator<'_> { r#"{slog}.DebugContext(ctx, "reading parameter", "i", {i}) p{i}, err := "# ); - self.print_read_ty(ty, "r", &i.to_string()); + self.print_read_ty(ty, "r", &format!("[]uint32{{ {i} }}")); self.push_str("\n"); uwriteln!( self.src, @@ -2249,13 +2595,13 @@ impl InterfaceGenerator<'_> { return wg.Wait() }} return nil - }}"#, + }}, "#, ); for (i, (_, ty)) in func.params.iter().enumerate() { let (nested, fut) = self.async_paths_ty(ty); for path in nested { self.push_str(wrpc); - self.push_str("NewSubscribePath().Index("); + self.push_str(".NewSubscribePath().Index("); uwrite!(self.src, "{i})"); for p in path { if let Some(p) = p { @@ -2286,11 +2632,173 @@ impl InterfaceGenerator<'_> { pub fn generate_imports<'a>( &mut self, + identifier: Identifier<'a>, instance: &str, funcs: impl Iterator, ) { + let mut resources = BTreeMap::new(); + + if let Identifier::Interface(id, ..) = identifier { + for (name, id) in &self.resolve.interfaces[id].types { + match self.resolve.types[*id].kind { + TypeDefKind::Resource => {} + _ => continue, + } + let camel = to_upper_camel_case(name); + resources.insert(*id, (camel, vec![])); + } + } for func in funcs { - self.generate_guest_import(instance, func); + if self.gen.skip.contains(&func.name) { + return; + } + + if let FunctionKind::Method(id) = &func.kind { + let (_, methods) = resources.get_mut(id).unwrap(); + let prev = mem::take(&mut self.src); + let sig = FnSig::default(); + self.print_docs_and_params(func, &sig); + self.src.push_str(" ("); + for ty in func.results.iter_types() { + self.print_opt_ty(ty, true); + self.src.push_str(", "); + } + self.push_str("func() error, error)\n"); + let trait_method = mem::replace(&mut self.src, prev); + methods.push(trait_method); + continue; + } + + let sig = FnSig::default(); + let fmt = self.deps.fmt(); + let wrpc = self.deps.wrpc(); + + let _params = self.print_docs_and_params(func, &sig); + if let FunctionKind::Constructor(_) = &func.kind { + uwrite!(self.src, " (r0__ any, close__ func() error, err__ error)"); + } else { + self.src.push_str(" ("); + for (i, ty) in func.results.iter_types().enumerate() { + uwrite!(self.src, "r{i}__ "); + self.print_opt_ty(ty, true); + self.src.push_str(", "); + } + self.push_str("close__ func() error, err__ error) "); + } + self.src.push_str("{\n"); + self.src.push_str("if err__ = wrpc__.Invoke(ctx__, "); + match func.kind { + FunctionKind::Freestanding + | FunctionKind::Static(..) + | FunctionKind::Constructor(..) => { + uwrite!(self.src, r#""{instance}""#); + } + FunctionKind::Method(..) => { + self.src.push_str("self.0"); + } + } + self.src.push_str(", \""); + self.src.push_str(&func.name); + self.src.push_str("\", "); + uwriteln!( + self.src, + "func(w__ {wrpc}.IndexWriter, r__ {wrpc}.IndexReadCloser) error {{" + ); + self.push_str("close__ = r__.Close\n"); + if !func.params.is_empty() { + let bytes = self.deps.bytes(); + uwriteln!( + self.src, + r"var buf__ {bytes}.Buffer + writes__ := make(map[uint32]func({wrpc}.IndexWriter) error, {})", + func.params.len(), + ); + for (i, (name, ty)) in func.params.iter().enumerate() { + uwrite!(self.src, "write{i}__, err__ :="); + self.print_write_ty(ty, &to_go_ident(name), "&buf__"); + self.src.push_str("\nif err__ != nil {\n"); + uwriteln!( + self.src, + r#"return {fmt}.Errorf("failed to write `{name}` parameter: %w", err__)"#, + ); + self.src.push_str("}\n"); + uwriteln!( + self.src, + r#"if write{i}__ != nil {{ + writes__[{i}] = write{i}__ + }}"#, + ); + } + self.push_str("_, err__ = w__.Write(buf__.Bytes())\n"); + self.push_str("if err__ != nil {\n"); + uwriteln!( + self.src, + r#"return {fmt}.Errorf("failed to write parameters: %w", err__)"#, + ); + self.src.push_str("}\n"); + } else { + self.push_str("_, err__ = w__.Write(nil)\n"); + self.push_str("if err__ != nil {\n"); + uwriteln!( + self.src, + r#"return {fmt}.Errorf("failed to write empty parameters: %w", err__)"#, + ); + self.src.push_str("}\n"); + } + for (i, ty) in func.results.iter_types().enumerate() { + uwrite!(self.src, "r{i}__, err__ = "); + self.print_read_ty(ty, "r__", &format!("[]uint32{{ {i} }}")); + self.push_str("\n"); + uwriteln!( + self.src, + r#"if err__ != nil {{ return {fmt}.Errorf("failed to read result {i}: %w", err__) }}"#, + ); + } + self.src.push_str("return nil\n"); + self.src.push_str("},"); + for (i, ty) in func.results.iter_types().enumerate() { + let (nested, fut) = self.async_paths_ty(ty); + for path in nested { + self.push_str(wrpc); + self.push_str(".NewSubscribePath().Index("); + uwrite!(self.src, "{i})"); + for p in path { + if let Some(p) = p { + uwrite!(self.src, ".Index({p})"); + } else { + self.push_str(".Wildcard()"); + } + } + self.push_str(", "); + } + if fut { + uwrite!(self.src, "{wrpc}.NewSubscribePath().Index({i}), "); + } + } + self.src.push_str("); err__ != nil {\n"); + uwriteln!( + self.src, + r#"err__ = {fmt}.Errorf("failed to invoke `{}`: %w", err__) + return + }} + return + }}"#, + func.name + ); + } + + for (trait_name, methods) in resources.values() { + uwriteln!(self.src, "type {trait_name} interface {{"); + for method in methods { + self.src.push_str(method); + } + let context = self.deps.context(); + let wrpc = self.deps.wrpc(); + uwriteln!( + self.src, + "Drop(ctx__ {context}.Context, wrpc__ {wrpc}.Client) error" + ); + uwriteln!(self.src, "}}"); } } @@ -2327,144 +2835,6 @@ impl InterfaceGenerator<'_> { map.push((module, module_path)); } - fn generate_guest_import(&mut self, instance: &str, func: &Function) { - if self.gen.skip.contains(&func.name) { - return; - } - - let sig = FnSig::default(); - match func.kind { - FunctionKind::Freestanding => {} - FunctionKind::Method(_id) - | FunctionKind::Static(_id) - | FunctionKind::Constructor(_id) => { - return; - // TODO: Generate - //let name = self.resolve.types[id].name.as_ref().unwrap(); - //let name = to_upper_camel_case(name); - //if let FunctionKind::Method(_) = &func.kind { - // sig.self_arg = Some(format!("self__ {name}")); - // sig.self_is_first_param = true; - //} - } - } - let fmt = self.deps.fmt(); - let wrpc = self.deps.wrpc(); - - let _params = self.print_docs_and_params(func, &sig); - if let FunctionKind::Constructor(_) = &func.kind { - uwrite!(self.src, " (Self, error)"); - } else { - self.src.push_str(" ("); - for (i, ty) in func.results.iter_types().enumerate() { - uwrite!(self.src, "r{i}__ "); - self.print_opt_ty(ty, true); - self.src.push_str(", "); - } - self.push_str("close__ func() error, err__ error) "); - } - self.src.push_str("{\n"); - self.src.push_str("if err__ = wrpc__.Invoke(ctx__, "); - match func.kind { - FunctionKind::Freestanding - | FunctionKind::Static(..) - | FunctionKind::Constructor(..) => { - uwrite!(self.src, r#""{instance}""#); - } - FunctionKind::Method(..) => { - self.src.push_str("self.0"); - } - } - self.src.push_str(", \""); - self.src.push_str(&func.name); - self.src.push_str("\", "); - uwriteln!( - self.src, - "func(w__ {wrpc}.IndexWriter, r__ {wrpc}.IndexReadCloser) error {{" - ); - self.push_str("close__ = r__.Close\n"); - if !func.params.is_empty() { - let bytes = self.deps.bytes(); - uwriteln!( - self.src, - r"var buf__ {bytes}.Buffer - writes__ := make(map[uint32]func({wrpc}.IndexWriter) error, {})", - func.params.len(), - ); - for (i, (name, ty)) in func.params.iter().enumerate() { - uwrite!(self.src, "write{i}__, err__ :="); - self.print_write_ty(ty, &to_go_ident(name), "&buf__"); - self.src.push_str("\nif err__ != nil {\n"); - uwriteln!( - self.src, - r#"return {fmt}.Errorf("failed to write `{name}` parameter: %w", err__)"#, - ); - self.src.push_str("}\n"); - uwriteln!( - self.src, - r#"if write{i}__ != nil {{ - writes__[{i}] = write{i}__ - }}"#, - ); - } - self.push_str("_, err__ = w__.Write(buf__.Bytes())\n"); - self.push_str("if err__ != nil {\n"); - uwriteln!( - self.src, - r#"return {fmt}.Errorf("failed to write parameters: %w", err__)"#, - ); - self.src.push_str("}\n"); - } else { - self.push_str("_, err__ = w__.Write(nil)\n"); - self.push_str("if err__ != nil {\n"); - uwriteln!( - self.src, - r#"return {fmt}.Errorf("failed to write empty parameters: %w", err__)"#, - ); - self.src.push_str("}\n"); - } - for (i, ty) in func.results.iter_types().enumerate() { - uwrite!(self.src, "r{i}__, err__ = "); - self.print_read_ty(ty, "r__", &i.to_string()); - self.push_str("\n"); - uwriteln!( - self.src, - r#"if err__ != nil {{ return {fmt}.Errorf("failed to read result {i}: %w", err__) }}"#, - ); - } - self.src.push_str("return nil\n"); - self.src.push_str("},"); - for (i, ty) in func.results.iter_types().enumerate() { - let (nested, fut) = self.async_paths_ty(ty); - for path in nested { - self.push_str(wrpc); - self.push_str("NewSubscribePath().Index("); - uwrite!(self.src, "{i})"); - for p in path { - if let Some(p) = p { - uwrite!(self.src, ".Index({p})"); - } else { - self.push_str(".Wildcard()"); - } - } - self.push_str(", "); - } - if fut { - uwrite!(self.src, "{wrpc}.NewSubscribePath().Index({i}), "); - } - } - self.src.push_str("); err__ != nil {\n"); - uwriteln!( - self.src, - r#"err__ = {fmt}.Errorf("failed to invoke `{}`: %w", err__) - return - }} - return - }}"#, - func.name - ); - } - fn godoc(&mut self, docs: &Docs) { let docs = match &docs.contents { Some(docs) => docs, @@ -2556,6 +2926,9 @@ impl InterfaceGenerator<'_> { self.push_str(arg); self.push_str(")"); } + if self.in_import && matches!(func.kind, FunctionKind::Constructor(..)) { + self.push_str("New"); + } self.push_str(&self.func_name(func)); let context = self.deps.context(); uwrite!(self.src, "(ctx__ {context}.Context, "); @@ -2617,10 +2990,35 @@ impl InterfaceGenerator<'_> { name } + fn print_option_element_ptr(&mut self, ty: &Type, decl: bool) { + if let Type::Id(id) = ty { + match &self.resolve.types[*id].kind { + TypeDefKind::Tuple(Tuple { types }) if types.len() == 1 => { + self.print_option_element_ptr(&types[0], decl); + return; + } + TypeDefKind::Type(ty) => { + self.print_option_element_ptr(ty, decl); + return; + } + _ => return, + } + } + if decl { + self.push_str("*"); + } else { + self.push_str("&"); + } + } + fn print_result_element_ptr(&mut self, ty: &Type, decl: bool) { if let Type::Id(id) = ty { match &self.resolve.types[*id].kind { - TypeDefKind::Option(..) | TypeDefKind::List(..) | TypeDefKind::Enum(..) => {} + TypeDefKind::Option(..) + | TypeDefKind::List(..) + | TypeDefKind::Enum(..) + | TypeDefKind::Resource + | TypeDefKind::Handle(..) => {} TypeDefKind::Tuple(Tuple { types }) if types.len() == 1 => { self.print_result_element_ptr(&types[0], decl); return; @@ -2935,7 +3333,7 @@ func (v *{name}) WriteToIndex(w {wrpc}.ByteWriter) (func({wrpc}.IndexWriter) err uwriteln!( self.src, - r#"func Read{name}(r {wrpc}.ByteReader) (*{name}, error) {{ + r#"func Read{name}(r {wrpc}.IndexReader, path ...uint32) (*{name}, error) {{ v := &{name}{{}} var err error"# ); @@ -2948,7 +3346,7 @@ func (v *{name}) WriteToIndex(w {wrpc}.ByteWriter) (func({wrpc}.IndexWriter) err r#"{slog}.Debug("reading field", "name", "{name}") v.{ident}, err = "# ); - self.print_read_ty(ty, "r", &i.to_string()); + self.print_read_ty(ty, "r", &format!("append(path, {i})")); self.push_str("\n"); uwriteln!( self.src, @@ -3044,9 +3442,10 @@ func (v *{name}) WriteToIndex(w {wrpc}.ByteWriter) (func({wrpc}.IndexWriter) err self.push_str("\n"); self.push_str("}\n"); + let io = self.deps.io(); uwrite!( self.src, - r#"func Read{name}(r {wrpc}.ByteReader) (*{name}, error) {{ + r#"func Read{name}(r {io}.Reader) (*{name}, error) {{ v := &{name}{{}} n, err := "# ); @@ -3244,7 +3643,7 @@ func (v *{name}) WriteToIndex(w {wrpc}.ByteWriter) (func({wrpc}.IndexWriter) err uwrite!( self.src, - r#"func Read{name}(r {wrpc}.ByteReader) (*{name}, error) {{ + r#"func Read{name}(r {wrpc}.IndexReader, path ...uint32) (*{name}, error) {{ disc, err := "#, ); self.print_read_discriminant(variant.tag(), "r"); @@ -3270,7 +3669,7 @@ func (v *{name}) WriteToIndex(w {wrpc}.ByteWriter) (func({wrpc}.IndexWriter) err self.push_str(":\n"); if let Some(ty) = ty { self.push_str("payload, err := "); - self.print_read_ty(ty, "r", &i.to_string()); + self.print_read_ty(ty, "r", &format!("append(path, {i})")); self.push_str("\n"); self.push_str("if err != nil { return nil, "); self.push_str(fmt); diff --git a/crates/wit-bindgen-go/src/lib.rs b/crates/wit-bindgen-go/src/lib.rs index 9f3618294..cf4a6838c 100644 --- a/crates/wit-bindgen-go/src/lib.rs +++ b/crates/wit-bindgen-go/src/lib.rs @@ -379,6 +379,7 @@ impl WorldGenerator for GoWrpc { gen.gen.name_interface(resolve, id, name, false); gen.types(id); + let identifier = Identifier::Interface(id, name); let interface = &resolve.interfaces[id]; let name = match name { WorldKey::Name(s) => s.to_string(), @@ -393,7 +394,11 @@ impl WorldGenerator for GoWrpc { } else { name }; - gen.generate_imports(&instance, resolve.interfaces[id].functions.values()); + gen.generate_imports( + identifier, + &instance, + resolve.interfaces[id].functions.values(), + ); gen.finish_append_submodule(&snake, module_path); } @@ -416,7 +421,11 @@ impl WorldGenerator for GoWrpc { } else { name.to_string() }; - gen.generate_imports(&instance, funcs.iter().map(|(_, func)| *func)); + gen.generate_imports( + Identifier::World(world), + &instance, + funcs.iter().map(|(_, func)| *func), + ); let src = gen.finish(); for (k, v) in gen.deps.map { diff --git a/examples/go/http-outgoing-client/bindings/client.wrpc.go b/examples/go/http-outgoing-client/bindings/client.wrpc.go new file mode 100644 index 000000000..95d14df91 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/client.wrpc.go @@ -0,0 +1,3 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +// client package contains wRPC bindings for `client` world +package client diff --git a/examples/go/http-outgoing-client/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go b/examples/go/http-outgoing-client/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go new file mode 100644 index 000000000..a59223715 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go @@ -0,0 +1,179 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package monotonic_clock + +import ( + bytes "bytes" + context "context" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wasi__io__poll "github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings/wasi/io/poll" + wrpc "github.com/wrpc/wrpc/go" + io "io" + slog "log/slog" +) + +type Pollable = wasi__io__poll.Pollable + +// An instant in time, in nanoseconds. An instant is relative to an +// unspecified initial value, and can only be compared to instances from +// the same monotonic-clock. +type Instant = uint64 + +// A duration of time, in nanoseconds. +type Duration = uint64 + +// Read the current value of the clock. +// +// The clock is monotonic, therefore calling this function repeatedly will +// produce a sequence of non-decreasing values. +func Now(ctx__ context.Context, wrpc__ wrpc.Client) (r0__ uint64, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:clocks/monotonic-clock@0.2.0", "now", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + _, err__ = w__.Write(nil) + if err__ != nil { + return fmt.Errorf("failed to write empty parameters: %w", err__) + } + r0__, err__ = func(r io.ByteReader) (uint64, error) { + var x uint64 + var s uint + for i := 0; i < 10; i++ { + slog.Debug("reading u64 byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(9) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadMethod(r wrpc.IndexReader, path ...uint32) (*Method, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(2) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadScheme(r wrpc.IndexReader, path ...uint32) (*Scheme, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Rcode, w) + if err != nil { + return nil, fmt.Errorf("failed to write `rcode` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "info-code") + write1, err := func(v *uint16, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint16, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen16); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u16"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.InfoCode, w) + if err != nil { + return nil, fmt.Errorf("failed to write `info-code` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadDnsErrorPayload(r wrpc.IndexReader, path ...uint32) (*DnsErrorPayload, error) { + v := &DnsErrorPayload{} + var err error + slog.Debug("reading field", "name", "rcode") + v.Rcode, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u16 byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("varint overflows a 16-bit integer") + } + return x | uint16(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.AlertMessage, w) + if err != nil { + return nil, fmt.Errorf("failed to write `alert-message` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadTlsAlertReceivedPayload(r wrpc.IndexReader, path ...uint32) (*TlsAlertReceivedPayload, error) { + v := &TlsAlertReceivedPayload{} + var err error + slog.Debug("reading field", "name", "alert-id") + v.AlertId, err = func(r wrpc.IndexReader) (*uint8, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r io.ByteReader) (uint8, error) { + slog.Debug("reading u8 byte") + v, err := r.ReadByte() + if err != nil { + return 0, fmt.Errorf("failed to read u8 byte: %w", err) + } + return v, nil + }(r) + if err != nil { + return nil, fmt.Errorf("failed to read `option::some` value: %w", err) + } + return &v, nil + default: + return nil, fmt.Errorf("invalid option status byte %d", status) + } + }(r) + if err != nil { + return nil, fmt.Errorf("failed to read `alert-id` field: %w", err) + } + slog.Debug("reading field", "name", "alert-message") + v.AlertMessage, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FieldName, w) + if err != nil { + return nil, fmt.Errorf("failed to write `field-name` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "field-size") + write1, err := func(v *uint32, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint32, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen32); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u32"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FieldSize, w) + if err != nil { + return nil, fmt.Errorf("failed to write `field-size` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadFieldSizePayload(r wrpc.IndexReader, path ...uint32) (*FieldSizePayload, error) { + v := &FieldSizePayload{} + var err error + slog.Debug("reading field", "name", "field-name") + v.FieldName, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(31) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + case ErrorCodeDiscriminant_HttpResponseContentCoding: + payload, ok := v.payload.(*string) + if !ok { + return nil, errors.New("invalid payload") + } + write, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(32) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + case ErrorCodeDiscriminant_HttpResponseTimeout: + case ErrorCodeDiscriminant_HttpUpgradeFailed: + case ErrorCodeDiscriminant_HttpProtocolError: + case ErrorCodeDiscriminant_LoopDetected: + case ErrorCodeDiscriminant_ConfigurationError: + case ErrorCodeDiscriminant_InternalError: + payload, ok := v.payload.(*string) + if !ok { + return nil, errors.New("invalid payload") + } + write, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(38) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadErrorCode(r wrpc.IndexReader, path ...uint32) (*ErrorCode, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, []uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(entries, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `entries` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) (*wrpc.Result[Fields, HeaderError], error) { + slog.Debug("reading result status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read result status byte: %w", err) + } + switch status { + case 0: + slog.Debug("reading `result::ok` payload") + v, err := (Fields)(nil), errors.New("reading owned handles not supported yet") + if err != nil { + return nil, fmt.Errorf("failed to read `result::ok` value: %w", err) + } + return &wrpc.Result[Fields, HeaderError]{Ok: &v}, nil + case 1: + slog.Debug("reading `result::err` payload") + v, err := ReadHeaderError(r, append([]uint32{0}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::err` value: %w", err) + } + return &wrpc.Result[Fields, HeaderError]{Err: v}, nil + default: + return nil, fmt.Errorf("invalid result status byte %d", status) + } + }(r__) + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]fields.from-list`: %w", err__) + return + } + return +} + +// Construct a new `outgoing-request` with a default `method` of `GET`, and +// `none` values for `path-with-query`, `scheme`, and `authority`. +// +// * `headers` is the HTTP Headers for the Request. +// +// It is possible to construct, or manipulate with the accessor functions +// below, an `outgoing-request` with an invalid combination of `scheme` +// and `authority`, or `headers` which are not permitted to be sent. +// It is the obligation of the `outgoing-handler.handle` implementation +// to reject invalid constructions of `outgoing-request`. +func NewOutgoingRequest(ctx__ context.Context, wrpc__ wrpc.Client, headers Headers) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]outgoing-request", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(headers) + if err__ != nil { + return fmt.Errorf("failed to write `headers` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (OutgoingRequest)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]outgoing-request`: %w", err__) + return + } + return +} + +// Construct a default `request-options` value. +func NewRequestOptions(ctx__ context.Context, wrpc__ wrpc.Client) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]request-options", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + _, err__ = w__.Write(nil) + if err__ != nil { + return fmt.Errorf("failed to write empty parameters: %w", err__) + } + r0__, err__ = (RequestOptions)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]request-options`: %w", err__) + return + } + return +} + +// Set the value of the `response-outparam` to either send a response, +// or indicate an error. +// +// This method consumes the `response-outparam` to ensure that it is +// called at most once. If it is never called, the implementation +// will respond with an error. +// +// The user may provide an `error` to `response` to allow the +// implementation determine how to respond with an HTTP error response. +func ResponseOutparam_Set(ctx__ context.Context, wrpc__ wrpc.Client, param ResponseOutparam, response *wrpc.Result[OutgoingResponse, ErrorCode]) (close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]response-outparam.set", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 2) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(param) + if err__ != nil { + return fmt.Errorf("failed to write `param` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + write1__, err__ := func(v *wrpc.Result[OutgoingResponse, ErrorCode], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + switch { + case v.Ok == nil && v.Err == nil: + return nil, errors.New("both result variants cannot be nil") + case v.Ok != nil && v.Err != nil: + return nil, errors.New("exactly one result variant must non-nil") + + case v.Ok != nil: + slog.Debug("writing `result::ok` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `result::ok` status byte: %w", err) + } + slog.Debug("writing `result::ok` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(*v.Ok) + if err != nil { + return nil, fmt.Errorf("failed to write `result::ok` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + default: + slog.Debug("writing `result::err` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `result::err` status byte: %w", err) + } + slog.Debug("writing `result::err` payload") + write, err := (*v.Err).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `result::err` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + } + }(response, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `response` parameter: %w", err__) + } + if write1__ != nil { + writes__[1] = write1__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]response-outparam.set`: %w", err__) + return + } + return +} + +// Takes ownership of `incoming-body`, and returns a `future-trailers`. +// This function will trap if the `input-stream` child is still alive. +func IncomingBody_Finish(ctx__ context.Context, wrpc__ wrpc.Client, this IncomingBody) (r0__ FutureTrailers, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]incoming-body.finish", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(this) + if err__ != nil { + return fmt.Errorf("failed to write `this` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (FutureTrailers)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]incoming-body.finish`: %w", err__) + return + } + return +} + +// Construct an `outgoing-response`, with a default `status-code` of `200`. +// If a different `status-code` is needed, it must be set via the +// `set-status-code` method. +// +// * `headers` is the HTTP Headers for the Response. +func NewOutgoingResponse(ctx__ context.Context, wrpc__ wrpc.Client, headers Headers) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]outgoing-response", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(headers) + if err__ != nil { + return fmt.Errorf("failed to write `headers` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (OutgoingResponse)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]outgoing-response`: %w", err__) + return + } + return +} + +// Finalize an outgoing body, optionally providing trailers. This must be +// called to signal that the response is complete. If the `outgoing-body` +// is dropped without calling `outgoing-body.finalize`, the implementation +// should treat the body as corrupted. +// +// Fails if the body's `outgoing-request` or `outgoing-response` was +// constructed with a Content-Length header, and the contents written +// to the body (via `write`) does not match the value given in the +// Content-Length. +func OutgoingBody_Finish(ctx__ context.Context, wrpc__ wrpc.Client, this OutgoingBody, trailers *Trailers) (r0__ *wrpc.Result[struct{}, ErrorCode], close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]outgoing-body.finish", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 2) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(this) + if err__ != nil { + return fmt.Errorf("failed to write `this` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + write1__, err__ := func(v *Trailers, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(*v) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(trailers, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `trailers` parameter: %w", err__) + } + if write1__ != nil { + writes__[1] = write1__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) (*wrpc.Result[struct{}, ErrorCode], error) { + slog.Debug("reading result status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read result status byte: %w", err) + } + switch status { + case 0: + var v struct{} + return &wrpc.Result[struct{}, ErrorCode]{Ok: &v}, nil + case 1: + slog.Debug("reading `result::err` payload") + v, err := ReadErrorCode(r, append([]uint32{0}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::err` value: %w", err) + } + return &wrpc.Result[struct{}, ErrorCode]{Err: v}, nil + default: + return nil, fmt.Errorf("invalid result status byte %d", status) + } + }(r__) + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]outgoing-body.finish`: %w", err__) + return + } + return +} + +type Fields interface { + // Get all of the values corresponding to a key. If the key is not present + // in this `fields`, an empty list is returned. However, if the key is + // present but empty, this is represented by a list with one or more + // empty field-values present. + Get(ctx__ context.Context, wrpc__ wrpc.Client, name string) ([][]uint8, func() error, error) + // Returns `true` when the key is present in this `fields`. If the key is + // syntactically invalid, `false` is returned. + Has(ctx__ context.Context, wrpc__ wrpc.Client, name string) (bool, func() error, error) + // Set all of the values for a key. Clears any existing values for that + // key, if they have been set. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Set(ctx__ context.Context, wrpc__ wrpc.Client, name string, value [][]uint8) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Delete all values for a key. Does nothing if no values for the key + // exist. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Delete(ctx__ context.Context, wrpc__ wrpc.Client, name string) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Append a value for a key. Does not change or delete any existing + // values for that key. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Append(ctx__ context.Context, wrpc__ wrpc.Client, name string, value []uint8) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Retrieve the full set of keys and values in the Fields. Like the + // constructor, the list represents each key-value pair. + // + // The outer list represents each key-value pair in the Fields. Keys + // which have multiple values are represented by multiple entries in this + // list with the same key. + Entries(ctx__ context.Context, wrpc__ wrpc.Client) ([]*wrpc.Tuple2[string, []uint8], func() error, error) + // Make a deep copy of the Fields. Equivelant in behavior to calling the + // `fields` constructor on the return value of `entries`. The resulting + // `fields` is mutable. + Clone(ctx__ context.Context, wrpc__ wrpc.Client) (Fields, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingRequest interface { + // Returns the method of the incoming request. + Method(ctx__ context.Context, wrpc__ wrpc.Client) (*Method, func() error, error) + // Returns the path with query parameters from the request, as a string. + PathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Returns the protocol scheme from the request. + Scheme(ctx__ context.Context, wrpc__ wrpc.Client) (*Scheme, func() error, error) + // Returns the authority from the request, if it was present. + Authority(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Get the `headers` associated with the request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // The `headers` returned are a child resource: it must be dropped before + // the parent `incoming-request` is dropped. Dropping this + // `incoming-request` before all children are dropped will trap. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Gives the `incoming-body` associated with this request. Will only + // return success at most once, and subsequent calls will return error. + Consume(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[IncomingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingRequest interface { + // Returns the resource corresponding to the outgoing Body for this + // Request. + // + // Returns success on the first call: the `outgoing-body` resource for + // this `outgoing-request` can be retrieved at most once. Subsequent + // calls will return error. + Body(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutgoingBody, struct{}], func() error, error) + // Get the Method for the Request. + Method(ctx__ context.Context, wrpc__ wrpc.Client) (*Method, func() error, error) + // Set the Method for the Request. Fails if the string present in a + // `method.other` argument is not a syntactically valid method. + SetMethod(ctx__ context.Context, wrpc__ wrpc.Client, method *Method) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the combination of the HTTP Path and Query for the Request. + // When `none`, this represents an empty Path and empty Query. + PathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Set the combination of the HTTP Path and Query for the Request. + // When `none`, this represents an empty Path and empty Query. Fails is the + // string given is not a syntactically valid path and query uri component. + SetPathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client, pathWithQuery *string) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the HTTP Related Scheme for the Request. When `none`, the + // implementation may choose an appropriate default scheme. + Scheme(ctx__ context.Context, wrpc__ wrpc.Client) (*Scheme, func() error, error) + // Set the HTTP Related Scheme for the Request. When `none`, the + // implementation may choose an appropriate default scheme. Fails if the + // string given is not a syntactically valid uri scheme. + SetScheme(ctx__ context.Context, wrpc__ wrpc.Client, scheme *Scheme) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the HTTP Authority for the Request. A value of `none` may be used + // with Related Schemes which do not require an Authority. The HTTP and + // HTTPS schemes always require an authority. + Authority(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Set the HTTP Authority for the Request. A value of `none` may be used + // with Related Schemes which do not require an Authority. The HTTP and + // HTTPS schemes always require an authority. Fails if the string given is + // not a syntactically valid uri authority. + SetAuthority(ctx__ context.Context, wrpc__ wrpc.Client, authority *string) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the headers associated with the Request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `outgoing-request` is dropped, or its ownership is transfered to + // another component by e.g. `outgoing-handler.handle`. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type RequestOptions interface { + // The timeout for the initial connect to the HTTP Server. + ConnectTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for the initial connect to the HTTP Server. An error + // return value indicates that this timeout is not supported. + SetConnectTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + // The timeout for receiving the first byte of the Response body. + FirstByteTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for receiving the first byte of the Response body. An + // error return value indicates that this timeout is not supported. + SetFirstByteTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + // The timeout for receiving subsequent chunks of bytes in the Response + // body stream. + BetweenBytesTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for receiving subsequent chunks of bytes in the Response + // body stream. An error return value indicates that this timeout is not + // supported. + SetBetweenBytesTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type ResponseOutparam interface { + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingResponse interface { + // Returns the status code from the incoming response. + Status(ctx__ context.Context, wrpc__ wrpc.Client) (uint16, func() error, error) + // Returns the headers from the incoming response. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `incoming-response` is dropped. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Returns the incoming body. May be called at most once. Returns error + // if called additional times. + Consume(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[IncomingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingBody interface { + // Returns the contents of the body, as a stream of bytes. + // + // Returns success on first call: the stream representing the contents + // can be retrieved at most once. Subsequent calls will return error. + // + // The returned `input-stream` resource is a child: it must be dropped + // before the parent `incoming-body` is dropped, or consumed by + // `incoming-body.finish`. + // + // This invariant ensures that the implementation can determine whether + // the user is consuming the contents of the body, waiting on the + // `future-trailers` to be ready, or neither. This allows for network + // backpressure is to be applied when the user is consuming the body, + // and for that backpressure to not inhibit delivery of the trailers if + // the user does not read the entire body. + Stream(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[InputStream, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type FutureTrailers interface { + // Returns a pollable which becomes ready when either the trailers have + // been received, or an error has occured. When this pollable is ready, + // the `get` method will return `some`. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Returns the contents of the trailers, or an error which occured, + // once the future is ready. + // + // The outer `option` represents future readiness. Users can wait on this + // `option` to become `some` using the `subscribe` method. + // + // The outer `result` is used to retrieve the trailers or error at most + // once. It will be success on the first call in which the outer option + // is `some`, and error on subsequent calls. + // + // The inner `result` represents that either the HTTP Request or Response + // body, as well as any trailers, were received successfully, or that an + // error occured receiving them. The optional `trailers` indicates whether + // or not trailers were present in the body. + // + // When some `trailers` are returned by this method, the `trailers` + // resource is immutable, and a child. Use of the `set`, `append`, or + // `delete` methods will return an error, and the resource must be + // dropped before the parent `future-trailers` is dropped. + Get(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[wrpc.Result[*Trailers, ErrorCode], struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingResponse interface { + // Get the HTTP Status Code for the Response. + StatusCode(ctx__ context.Context, wrpc__ wrpc.Client) (uint16, func() error, error) + // Set the HTTP Status Code for the Response. Fails if the status-code + // given is not a valid http status code. + SetStatusCode(ctx__ context.Context, wrpc__ wrpc.Client, statusCode uint16) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the headers associated with the Request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `outgoing-request` is dropped, or its ownership is transfered to + // another component by e.g. `outgoing-handler.handle`. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Returns the resource corresponding to the outgoing Body for this Response. + // + // Returns success on the first call: the `outgoing-body` resource for + // this `outgoing-response` can be retrieved at most once. Subsequent + // calls will return error. + Body(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutgoingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingBody interface { + // Returns a stream for writing the body contents. + // + // The returned `output-stream` is a child resource: it must be dropped + // before the parent `outgoing-body` resource is dropped (or finished), + // otherwise the `outgoing-body` drop or `finish` will trap. + // + // Returns success on the first call: the `output-stream` resource for + // this `outgoing-body` may be retrieved at most once. Subsequent calls + // will return error. + Write(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutputStream, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type FutureIncomingResponse interface { + // Returns a pollable which becomes ready when either the Response has + // been received, or an error has occured. When this pollable is ready, + // the `get` method will return `some`. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Returns the incoming HTTP Response, or an error, once one is ready. + // + // The outer `option` represents future readiness. Users can wait on this + // `option` to become `some` using the `subscribe` method. + // + // The outer `result` is used to retrieve the response or error at most + // once. It will be success on the first call in which the outer option + // is `some`, and error on subsequent calls. + // + // The inner `result` represents that either the incoming HTTP Response + // status and headers have recieved successfully, or that an error + // occured. Errors may also occur while consuming the response body, + // but those will be reported by the `incoming-body` and its + // `output-stream` child. + Get(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[wrpc.Result[IncomingResponse, ErrorCode], struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-client/bindings/wasi/io/error/bindings.wrpc.go b/examples/go/http-outgoing-client/bindings/wasi/io/error/bindings.wrpc.go new file mode 100644 index 000000000..414913b26 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/wasi/io/error/bindings.wrpc.go @@ -0,0 +1,19 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package error + +import ( + context "context" + wrpc "github.com/wrpc/wrpc/go" +) + +type Error interface { + // Returns a string that is suitable to assist humans in debugging + // this error. + // + // WARNING: The returned string should not be consumed mechanically! + // It may change across platforms, hosts, or other implementation + // details. Parsing this string is a major platform-compatibility + // hazard. + ToDebugString(ctx__ context.Context, wrpc__ wrpc.Client) (string, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-client/bindings/wasi/io/poll/bindings.wrpc.go b/examples/go/http-outgoing-client/bindings/wasi/io/poll/bindings.wrpc.go new file mode 100644 index 000000000..3f0d885f6 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/wasi/io/poll/bindings.wrpc.go @@ -0,0 +1,170 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package poll + +import ( + bytes "bytes" + context "context" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wrpc "github.com/wrpc/wrpc/go" + errgroup "golang.org/x/sync/errgroup" + io "io" + slog "log/slog" + math "math" +) + +// Poll for completion on a set of pollables. +// +// This function takes a list of pollables, which identify I/O sources of +// interest, and waits until one or more of the events is ready for I/O. +// +// The result `list` contains one or more indices of handles in the +// argument list that is ready for I/O. +// +// If the list contains more elements than can be indexed with a `u32` +// value, this function traps. +// +// A timeout can be implemented by adding a pollable from the +// wasi-clocks API to the list. +// +// This function does not return a `result`; polling in itself does not +// do any I/O so it doesn't fail. If any of the I/O sources identified by +// the pollables has an error, it is indicated by marking the source as +// being reaedy for I/O. +func Poll(ctx__ context.Context, wrpc__ wrpc.Client, in []Pollable) (r0__ []uint32, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:io/poll@0.2.0", "poll", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := func(v []Pollable, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing borrowed handles not supported yet") }(e) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(in, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `in` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) ([]uint32, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading list length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)<0, or an + // error. + // + // If the stream is closed, this pollable is always ready immediately. + // + // The created `pollable` is a child resource of the `output-stream`. + // Implementations may trap if the `output-stream` is dropped before + // all derived `pollable`s created with this function are dropped. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Write zeroes to a stream. + // + // This should be used precisely like `write` with the exact same + // preconditions (must use check-write first), but instead of + // passing a list of bytes, you simply pass the number of zero-bytes + // that should be written. + WriteZeroes(ctx__ context.Context, wrpc__ wrpc.Client, len uint64) (*wrpc.Result[struct{}, StreamError], func() error, error) + // Perform a write of up to 4096 zeroes, and then flush the stream. + // Block until all of these operations are complete, or an error + // occurs. + // + // This is a convenience wrapper around the use of `check-write`, + // `subscribe`, `write-zeroes`, and `flush`, and is implemented with + // the following pseudo-code: + // + // ```text + // let pollable = this.subscribe(); + // while num_zeroes != 0 { + // // Wait for the stream to become writable + // pollable.block(); + // let Ok(n) = this.check-write(); // eliding error handling + // let len = min(n, num_zeroes); + // this.write-zeroes(len); // eliding error handling + // num_zeroes -= len; + // } + // this.flush(); + // // Wait for completion of `flush` + // pollable.block(); + // // Check for any errors that arose during `flush` + // let _ = this.check-write(); // eliding error handling + // ``` + BlockingWriteZeroesAndFlush(ctx__ context.Context, wrpc__ wrpc.Client, len uint64) (*wrpc.Result[struct{}, StreamError], func() error, error) + // Read from one stream and write to another. + // + // The behavior of splice is equivelant to: + // 1. calling `check-write` on the `output-stream` + // 2. calling `read` on the `input-stream` with the smaller of the + // `check-write` permitted length and the `len` provided to `splice` + // 3. calling `write` on the `output-stream` with that read data. + // + // Any error reported by the call to `check-write`, `read`, or + // `write` ends the splice and reports that error. + // + // This function returns the number of bytes transferred; it may be less + // than `len`. + Splice(ctx__ context.Context, wrpc__ wrpc.Client, src InputStream, len uint64) (*wrpc.Result[uint64, StreamError], func() error, error) + // Read from one stream and write to another, with blocking. + // + // This is similar to `splice`, except that it blocks until the + // `output-stream` is ready for writing, and the `input-stream` + // is ready for reading, before performing the `splice`. + BlockingSplice(ctx__ context.Context, wrpc__ wrpc.Client, src InputStream, len uint64) (*wrpc.Result[uint64, StreamError], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-client/bindings/wrpc/http/outgoing_handler/bindings.wrpc.go b/examples/go/http-outgoing-client/bindings/wrpc/http/outgoing_handler/bindings.wrpc.go new file mode 100644 index 000000000..cc78e5384 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/wrpc/http/outgoing_handler/bindings.wrpc.go @@ -0,0 +1,103 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package outgoing_handler + +import ( + bytes "bytes" + context "context" + fmt "fmt" + wasi__http__types "github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings/wasi/http/types" + wrpc__http__types "github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings/wrpc/http/types" + wrpc "github.com/wrpc/wrpc/go" + slog "log/slog" +) + +type Request = wrpc__http__types.Request +type Response = wrpc__http__types.Response +type ErrorCode = wrpc__http__types.ErrorCode +type RequestOptions = wrpc__http__types.RequestOptions + +func Handle(ctx__ context.Context, wrpc__ wrpc.Client, request *wrpc__http__types.Request, options *RequestOptions) (r0__ *wrpc.Result[Response, ErrorCode], close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wrpc:http/outgoing-handler@0.1.0", "handle", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 2) + write0__, err__ := (request).WriteToIndex(&buf__) + if err__ != nil { + return fmt.Errorf("failed to write `request` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + write1__, err__ := func(v *RequestOptions, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (*v).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(options, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `options` parameter: %w", err__) + } + if write1__ != nil { + writes__[1] = write1__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) (*wrpc.Result[Response, ErrorCode], error) { + slog.Debug("reading result status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read result status byte: %w", err) + } + switch status { + case 0: + slog.Debug("reading `result::ok` payload") + v, err := wrpc__http__types.ReadResponse(r, append([]uint32{0}, 0)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::ok` value: %w", err) + } + return &wrpc.Result[Response, ErrorCode]{Ok: v}, nil + case 1: + slog.Debug("reading `result::err` payload") + v, err := wasi__http__types.ReadErrorCode(r, append([]uint32{0}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::err` value: %w", err) + } + return &wrpc.Result[Response, ErrorCode]{Err: v}, nil + default: + return nil, fmt.Errorf("invalid result status byte %d", status) + } + }(r__) + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }, wrpc.NewSubscribePath().Index(0).Index(0).Index(0), wrpc.NewSubscribePath().Index(0).Index(0).Index(1)); err__ != nil { + err__ = fmt.Errorf("failed to invoke `handle`: %w", err__) + return + } + return +} diff --git a/examples/go/http-outgoing-client/bindings/wrpc/http/types/bindings.wrpc.go b/examples/go/http-outgoing-client/bindings/wrpc/http/types/bindings.wrpc.go new file mode 100644 index 000000000..612f9b0b0 --- /dev/null +++ b/examples/go/http-outgoing-client/bindings/wrpc/http/types/bindings.wrpc.go @@ -0,0 +1,3421 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package types + +import ( + bytes "bytes" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wasi__clocks__monotonic_clock "github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings/wasi/clocks/monotonic_clock" + wasi__http__types "github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings/wasi/http/types" + wrpc "github.com/wrpc/wrpc/go" + errgroup "golang.org/x/sync/errgroup" + io "io" + slog "log/slog" + math "math" + utf8 "unicode/utf8" +) + +type WasiErrorCode = wasi__http__types.ErrorCode +type WasiMethod = wasi__http__types.Method +type WasiScheme = wasi__http__types.Scheme +type Duration = wasi__clocks__monotonic_clock.Duration +type ErrorCode = WasiErrorCode +type Method = WasiMethod +type Scheme = WasiScheme +type Fields = []*wrpc.Tuple2[string, [][]uint8] +type RequestOptions struct { + ConnectTimeout *Duration + FirstByteTimeout *Duration + BetweenBytesTimeout *Duration +} + +func (v *RequestOptions) String() string { return "RequestOptions" } + +func (v *RequestOptions) WriteToIndex(w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 3) + slog.Debug("writing field", "name", "connect-timeout") + write0, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.ConnectTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `connect-timeout` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "first-byte-timeout") + write1, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FirstByteTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `first-byte-timeout` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "between-bytes-timeout") + write2, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.BetweenBytesTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `between-bytes-timeout` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadRequestOptions(r wrpc.IndexReader, path ...uint32) (*RequestOptions, error) { + v := &RequestOptions{} + var err error + slog.Debug("reading field", "name", "connect-timeout") + v.ConnectTimeout, err = func(r wrpc.IndexReader) (*Duration, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r io.ByteReader) (uint64, error) { + var x uint64 + var s uint + for i := 0; i < 10; i++ { + slog.Debug("reading u64 byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< math.MaxUint32 { + return fmt.Errorf("pending byte stream chunk length of %d overflows a 32-bit integer", n) + } + slog.Debug("writing pending byte stream chunk length", "len", n) + if err := wrpc.WriteUint32(uint32(n), w); err != nil { + return fmt.Errorf("failed to write pending byte stream chunk length of %d: %w", n, err) + } + _, err = w.Write(chunk[:n]) + if err != nil { + return fmt.Errorf("failed to write pending byte stream chunk contents: %w", err) + } + if end { + if err := w.WriteByte(0); err != nil { + return fmt.Errorf("failed to write pending byte stream end byte: %w", err) + } + return nil + } + } + }, nil + } + }(v.Body, w) + if err != nil { + return nil, fmt.Errorf("failed to write `body` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "trailers") + write1, err := func(v wrpc.ReceiveCompleter[[]*wrpc.Tuple2[string, [][]uint8]], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + if v.IsComplete() { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close ready future: %w", cErr) + } else { + slog.Warn("failed to close ready future", "err", cErr) + } + } + } + }() + slog.Debug("writing future `future::ready` status byte") + if err = w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `future::ready` byte: %w", err) + } + slog.Debug("receiving ready future contents") + rx, err := v.Receive() + if err != nil && err != io.EOF { + return nil, fmt.Errorf("failed to receive ready future contents: %w", err) + } + slog.Debug("writing ready future contents") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return nil, fmt.Errorf("failed to write ready future contents: %w", err) + } + return write, nil + } else { + slog.Debug("writing future `future::pending` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + } + return func(w wrpc.IndexWriter) (err error) { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close pending future: %w", cErr) + } else { + slog.Warn("failed to close pending future", "err", cErr) + } + } + } + }() + slog.Debug("receiving outgoing pending future contents") + rx, err := v.Receive() + if err != nil { + return fmt.Errorf("failed to receive outgoing pending future: %w", err) + } + slog.Debug("writing pending future element") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return fmt.Errorf("failed to write pending future element: %w", err) + } + if write != nil { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + } + return nil + }, nil + } + }(v.Trailers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `trailers` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "method") + write2, err := (v.Method).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `method` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + slog.Debug("writing field", "name", "path-with-query") + write3, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.PathWithQuery, w) + if err != nil { + return nil, fmt.Errorf("failed to write `path-with-query` field: %w", err) + } + if write3 != nil { + writes[3] = write3 + } + slog.Debug("writing field", "name", "scheme") + write4, err := func(v *Scheme, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (*v).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Scheme, w) + if err != nil { + return nil, fmt.Errorf("failed to write `scheme` field: %w", err) + } + if write4 != nil { + writes[4] = write4 + } + slog.Debug("writing field", "name", "authority") + write5, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Authority, w) + if err != nil { + return nil, fmt.Errorf("failed to write `authority` field: %w", err) + } + if write5 != nil { + writes[5] = write5 + } + slog.Debug("writing field", "name", "headers") + write6, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.Headers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `headers` field: %w", err) + } + if write6 != nil { + writes[6] = write6 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadRequest(r wrpc.IndexReader, path ...uint32) (*Request, error) { + v := &Request{} + var err error + slog.Debug("reading field", "name", "body") + v.Body, err = func(r wrpc.IndexReader, path ...uint32) (wrpc.ReadCompleter, error) { + slog.Debug("reading byte stream status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read byte stream status byte: %w", err) + } + switch status { + case 0: + r, err = r.Index(path...) + if err != nil { + return nil, fmt.Errorf("failed to index reader: %w", err) + } + return wrpc.NewByteStreamReader(wrpc.NewPendingByteReader(r)), nil + case 1: + slog.Debug("reading ready byte stream contents") + buf, err := + func(r interface { + io.ByteReader + io.Reader + }) ([]byte, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading byte list length", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("pending byte stream chunk length of %d overflows a 32-bit integer", n) + } + slog.Debug("writing pending byte stream chunk length", "len", n) + if err := wrpc.WriteUint32(uint32(n), w); err != nil { + return fmt.Errorf("failed to write pending byte stream chunk length of %d: %w", n, err) + } + _, err = w.Write(chunk[:n]) + if err != nil { + return fmt.Errorf("failed to write pending byte stream chunk contents: %w", err) + } + if end { + if err := w.WriteByte(0); err != nil { + return fmt.Errorf("failed to write pending byte stream end byte: %w", err) + } + return nil + } + } + }, nil + } + }(v.Body, w) + if err != nil { + return nil, fmt.Errorf("failed to write `body` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "trailers") + write1, err := func(v wrpc.ReceiveCompleter[[]*wrpc.Tuple2[string, [][]uint8]], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + if v.IsComplete() { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close ready future: %w", cErr) + } else { + slog.Warn("failed to close ready future", "err", cErr) + } + } + } + }() + slog.Debug("writing future `future::ready` status byte") + if err = w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `future::ready` byte: %w", err) + } + slog.Debug("receiving ready future contents") + rx, err := v.Receive() + if err != nil && err != io.EOF { + return nil, fmt.Errorf("failed to receive ready future contents: %w", err) + } + slog.Debug("writing ready future contents") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return nil, fmt.Errorf("failed to write ready future contents: %w", err) + } + return write, nil + } else { + slog.Debug("writing future `future::pending` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + } + return func(w wrpc.IndexWriter) (err error) { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close pending future: %w", cErr) + } else { + slog.Warn("failed to close pending future", "err", cErr) + } + } + } + }() + slog.Debug("receiving outgoing pending future contents") + rx, err := v.Receive() + if err != nil { + return fmt.Errorf("failed to receive outgoing pending future: %w", err) + } + slog.Debug("writing pending future element") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return fmt.Errorf("failed to write pending future element: %w", err) + } + if write != nil { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + } + return nil + }, nil + } + }(v.Trailers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `trailers` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "status") + write2, err := (func(wrpc.IndexWriter) error)(nil), func(v uint16, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen16); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u16"); _, err = w.Write(b[:i]); return err }(v.Status, w) + if err != nil { + return nil, fmt.Errorf("failed to write `status` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + slog.Debug("writing field", "name", "headers") + write3, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.Headers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `headers` field: %w", err) + } + if write3 != nil { + writes[3] = write3 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadResponse(r wrpc.IndexReader, path ...uint32) (*Response, error) { + v := &Response{} + var err error + slog.Debug("reading field", "name", "body") + v.Body, err = func(r wrpc.IndexReader, path ...uint32) (wrpc.ReadCompleter, error) { + slog.Debug("reading byte stream status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read byte stream status byte: %w", err) + } + switch status { + case 0: + r, err = r.Index(path...) + if err != nil { + return nil, fmt.Errorf("failed to index reader: %w", err) + } + return wrpc.NewByteStreamReader(wrpc.NewPendingByteReader(r)), nil + case 1: + slog.Debug("reading ready byte stream contents") + buf, err := + func(r interface { + io.ByteReader + io.Reader + }) ([]byte, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading byte list length", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u16 byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("varint overflows a 16-bit integer") + } + return x | uint16(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< ../../../go diff --git a/examples/go/http-outgoing-client/go.sum b/examples/go/http-outgoing-client/go.sum new file mode 100644 index 000000000..659136757 --- /dev/null +++ b/examples/go/http-outgoing-client/go.sum @@ -0,0 +1,12 @@ +github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0NAMnU= +github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw= +github.com/nats-io/nats.go v1.34.1 h1:syWey5xaNHZgicYBemv0nohUPPmaLteiBEUT6Q5+F/4= +github.com/nats-io/nats.go v1.34.1/go.mod h1:Ubdu4Nh9exXdSz0RVWRFBbRfrbSxOYd26oF0wkWclB8= +github.com/nats-io/nkeys v0.4.7 h1:RwNJbbIdYCoClSDNY7QVKZlyb/wfT6ugvFCiKy6vDvI= +github.com/nats-io/nkeys v0.4.7/go.mod h1:kqXRgRDPlGy7nGaEDMuYzmiJCIAAWDK0IMBtDmGD0nc= +github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw= +github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c= +golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI= +golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M= +golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk= +golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y= diff --git a/examples/go/http-outgoing-client/http_outgoing_client.go b/examples/go/http-outgoing-client/http_outgoing_client.go new file mode 100644 index 000000000..cd82a50ed --- /dev/null +++ b/examples/go/http-outgoing-client/http_outgoing_client.go @@ -0,0 +1,3 @@ +//go:generate cargo run --bin wit-bindgen-wrpc go --out-dir bindings --package github.com/wrpc/wrpc/examples/go/http-outgoing-client/bindings wit + +package http_outgoing_client diff --git a/examples/go/http-outgoing-client/wit/deps.lock b/examples/go/http-outgoing-client/wit/deps.lock new file mode 100644 index 000000000..dab041ebd --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps.lock @@ -0,0 +1,34 @@ +[cli] +sha256 = "285865a31d777181b075f39e92bcfe59c89cd6bacce660be1b9a627646956258" +sha512 = "da2622210a9e3eea82b99f1a5b8a44ce5443d009cb943f7bca0bf9cf4360829b289913d7ee727c011f0f72994ea7dc8e661ebcc0a6b34b587297d80cd9b3f7e8" + +[clocks] +sha256 = "468b4d12892fe926b8eb5d398dbf579d566c93231fa44f415440572c695b7613" +sha512 = "e6b53a07221f1413953c9797c68f08b815fdaebf66419bbc1ea3e8b7dece73731062693634731f311a03957b268cf9cc509c518bd15e513c318aa04a8459b93a" + +[filesystem] +sha256 = "498c465cfd04587db40f970fff2185daa597d074c20b68a8bcbae558f261499b" +sha512 = "ead452f9b7bfb88593a502ec00d76d4228003d51c40fd0408aebc32d35c94673551b00230d730873361567cc209ec218c41fb4e95bad194268592c49e7964347" + +[http] +path = "../../../../crates/interface-http/wit/deps/http" +sha256 = "8f44402bde16c48e28c47dc53eab0b26af5b3b3482a1852cf77673e0880ba1c1" +sha512 = "760695f9a25c25bf75a25b731cb21c3bda9e288e450edda823324ecbc73d5d798bbb5de2edad999566980836f037463ee9e57d61789d04b3f3e381475b1a9a0f" + +[io] +sha256 = "7210e5653539a15478f894d4da24cc69d61924cbcba21d2804d69314a88e5a4c" +sha512 = "49184a1b0945a889abd52d25271172ed3dc2db6968fcdddb1bab7ee0081f4a3eeee0977ad2291126a37631c0d86eeea75d822fa8af224c422134500bf9f0f2bb" + +[random] +sha256 = "7371d03c037d924caba2587fb2e7c5773a0d3c5fcecbf7971e0e0ba57973c53d" +sha512 = "964c4e8925a53078e4d94ba907b54f89a0b7e154f46823a505391471466c17f53c8692682e5c85771712acd88b348686173fc07c53a3cfe3d301b8cd8ddd0de4" + +[sockets] +sha256 = "622bd28bbeb43736375dc02bd003fd3a016ff8ee91e14bab488325c6b38bf966" +sha512 = "5a63c1f36de0c4548e1d2297bdbededb28721cbad94ef7825c469eae29d7451c97e00b4c1d6730ee1ec0c4a5aac922961a2795762d4a0c3bb54e30a391a84bae" + +[wrpc-http] +path = "../../../../crates/interface-http/wit" +sha256 = "b7f5f8d26be1d5688e53f8495c0e6cd59c59d7c3f773298bf597653a90174f41" +sha512 = "0d477014a57cc9749ae90e1f04df1f5ddf5db07da8fabbffb35253fcd8c75849f153967aa025035018a9de4fab979e0a0359375d1d9bdf106abb78a331e43848" +deps = ["cli", "clocks", "filesystem", "io", "random", "sockets"] diff --git a/examples/go/http-outgoing-client/wit/deps.toml b/examples/go/http-outgoing-client/wit/deps.toml new file mode 100644 index 000000000..54baf4db3 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps.toml @@ -0,0 +1,2 @@ +http = "../../../../crates/interface-http/wit/deps/http" +wrpc-http = "../../../../crates/interface-http/wit" diff --git a/examples/go/http-outgoing-client/wit/deps/cli/command.wit b/examples/go/http-outgoing-client/wit/deps/cli/command.wit new file mode 100644 index 000000000..d8005bd38 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/command.wit @@ -0,0 +1,7 @@ +package wasi:cli@0.2.0; + +world command { + include imports; + + export run; +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/environment.wit b/examples/go/http-outgoing-client/wit/deps/cli/environment.wit new file mode 100644 index 000000000..70065233e --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/environment.wit @@ -0,0 +1,18 @@ +interface environment { + /// Get the POSIX-style environment variables. + /// + /// Each environment variable is provided as a pair of string variable names + /// and string value. + /// + /// Morally, these are a value import, but until value imports are available + /// in the component model, this import function should return the same + /// values each time it is called. + get-environment: func() -> list>; + + /// Get the POSIX-style arguments to the program. + get-arguments: func() -> list; + + /// Return a path that programs should use as their initial current working + /// directory, interpreting `.` as shorthand for this. + initial-cwd: func() -> option; +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/exit.wit b/examples/go/http-outgoing-client/wit/deps/cli/exit.wit new file mode 100644 index 000000000..d0c2b82ae --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/exit.wit @@ -0,0 +1,4 @@ +interface exit { + /// Exit the current instance and any linked instances. + exit: func(status: result); +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/imports.wit b/examples/go/http-outgoing-client/wit/deps/cli/imports.wit new file mode 100644 index 000000000..083b84a03 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/imports.wit @@ -0,0 +1,20 @@ +package wasi:cli@0.2.0; + +world imports { + include wasi:clocks/imports@0.2.0; + include wasi:filesystem/imports@0.2.0; + include wasi:sockets/imports@0.2.0; + include wasi:random/imports@0.2.0; + include wasi:io/imports@0.2.0; + + import environment; + import exit; + import stdin; + import stdout; + import stderr; + import terminal-input; + import terminal-output; + import terminal-stdin; + import terminal-stdout; + import terminal-stderr; +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/run.wit b/examples/go/http-outgoing-client/wit/deps/cli/run.wit new file mode 100644 index 000000000..a70ee8c03 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/run.wit @@ -0,0 +1,4 @@ +interface run { + /// Run the program. + run: func() -> result; +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/stdio.wit b/examples/go/http-outgoing-client/wit/deps/cli/stdio.wit new file mode 100644 index 000000000..31ef35b5a --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/stdio.wit @@ -0,0 +1,17 @@ +interface stdin { + use wasi:io/streams@0.2.0.{input-stream}; + + get-stdin: func() -> input-stream; +} + +interface stdout { + use wasi:io/streams@0.2.0.{output-stream}; + + get-stdout: func() -> output-stream; +} + +interface stderr { + use wasi:io/streams@0.2.0.{output-stream}; + + get-stderr: func() -> output-stream; +} diff --git a/examples/go/http-outgoing-client/wit/deps/cli/terminal.wit b/examples/go/http-outgoing-client/wit/deps/cli/terminal.wit new file mode 100644 index 000000000..38c724efc --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/cli/terminal.wit @@ -0,0 +1,49 @@ +/// Terminal input. +/// +/// In the future, this may include functions for disabling echoing, +/// disabling input buffering so that keyboard events are sent through +/// immediately, querying supported features, and so on. +interface terminal-input { + /// The input side of a terminal. + resource terminal-input; +} + +/// Terminal output. +/// +/// In the future, this may include functions for querying the terminal +/// size, being notified of terminal size changes, querying supported +/// features, and so on. +interface terminal-output { + /// The output side of a terminal. + resource terminal-output; +} + +/// An interface providing an optional `terminal-input` for stdin as a +/// link-time authority. +interface terminal-stdin { + use terminal-input.{terminal-input}; + + /// If stdin is connected to a terminal, return a `terminal-input` handle + /// allowing further interaction with it. + get-terminal-stdin: func() -> option; +} + +/// An interface providing an optional `terminal-output` for stdout as a +/// link-time authority. +interface terminal-stdout { + use terminal-output.{terminal-output}; + + /// If stdout is connected to a terminal, return a `terminal-output` handle + /// allowing further interaction with it. + get-terminal-stdout: func() -> option; +} + +/// An interface providing an optional `terminal-output` for stderr as a +/// link-time authority. +interface terminal-stderr { + use terminal-output.{terminal-output}; + + /// If stderr is connected to a terminal, return a `terminal-output` handle + /// allowing further interaction with it. + get-terminal-stderr: func() -> option; +} diff --git a/examples/go/http-outgoing-client/wit/deps/clocks/monotonic-clock.wit b/examples/go/http-outgoing-client/wit/deps/clocks/monotonic-clock.wit new file mode 100644 index 000000000..4e4dc3a19 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/clocks/monotonic-clock.wit @@ -0,0 +1,45 @@ +package wasi:clocks@0.2.0; +/// WASI Monotonic Clock is a clock API intended to let users measure elapsed +/// time. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +/// +/// A monotonic clock is a clock which has an unspecified initial value, and +/// successive reads of the clock will produce non-decreasing values. +/// +/// It is intended for measuring elapsed time. +interface monotonic-clock { + use wasi:io/poll@0.2.0.{pollable}; + + /// An instant in time, in nanoseconds. An instant is relative to an + /// unspecified initial value, and can only be compared to instances from + /// the same monotonic-clock. + type instant = u64; + + /// A duration of time, in nanoseconds. + type duration = u64; + + /// Read the current value of the clock. + /// + /// The clock is monotonic, therefore calling this function repeatedly will + /// produce a sequence of non-decreasing values. + now: func() -> instant; + + /// Query the resolution of the clock. Returns the duration of time + /// corresponding to a clock tick. + resolution: func() -> duration; + + /// Create a `pollable` which will resolve once the specified instant + /// occured. + subscribe-instant: func( + when: instant, + ) -> pollable; + + /// Create a `pollable` which will resolve once the given duration has + /// elapsed, starting at the time at which this function was called. + /// occured. + subscribe-duration: func( + when: duration, + ) -> pollable; +} diff --git a/examples/go/http-outgoing-client/wit/deps/clocks/wall-clock.wit b/examples/go/http-outgoing-client/wit/deps/clocks/wall-clock.wit new file mode 100644 index 000000000..440ca0f33 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/clocks/wall-clock.wit @@ -0,0 +1,42 @@ +package wasi:clocks@0.2.0; +/// WASI Wall Clock is a clock API intended to let users query the current +/// time. The name "wall" makes an analogy to a "clock on the wall", which +/// is not necessarily monotonic as it may be reset. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +/// +/// A wall clock is a clock which measures the date and time according to +/// some external reference. +/// +/// External references may be reset, so this clock is not necessarily +/// monotonic, making it unsuitable for measuring elapsed time. +/// +/// It is intended for reporting the current date and time for humans. +interface wall-clock { + /// A time and date in seconds plus nanoseconds. + record datetime { + seconds: u64, + nanoseconds: u32, + } + + /// Read the current value of the clock. + /// + /// This clock is not monotonic, therefore calling this function repeatedly + /// will not necessarily produce a sequence of non-decreasing values. + /// + /// The returned timestamps represent the number of seconds since + /// 1970-01-01T00:00:00Z, also known as [POSIX's Seconds Since the Epoch], + /// also known as [Unix Time]. + /// + /// The nanoseconds field of the output is always less than 1000000000. + /// + /// [POSIX's Seconds Since the Epoch]: https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xbd_chap04.html#tag_21_04_16 + /// [Unix Time]: https://en.wikipedia.org/wiki/Unix_time + now: func() -> datetime; + + /// Query the resolution of the clock. + /// + /// The nanoseconds field of the output is always less than 1000000000. + resolution: func() -> datetime; +} diff --git a/examples/go/http-outgoing-client/wit/deps/clocks/world.wit b/examples/go/http-outgoing-client/wit/deps/clocks/world.wit new file mode 100644 index 000000000..c0224572a --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/clocks/world.wit @@ -0,0 +1,6 @@ +package wasi:clocks@0.2.0; + +world imports { + import monotonic-clock; + import wall-clock; +} diff --git a/examples/go/http-outgoing-client/wit/deps/filesystem/preopens.wit b/examples/go/http-outgoing-client/wit/deps/filesystem/preopens.wit new file mode 100644 index 000000000..da801f6d6 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/filesystem/preopens.wit @@ -0,0 +1,8 @@ +package wasi:filesystem@0.2.0; + +interface preopens { + use types.{descriptor}; + + /// Return the set of preopened directories, and their path. + get-directories: func() -> list>; +} diff --git a/examples/go/http-outgoing-client/wit/deps/filesystem/types.wit b/examples/go/http-outgoing-client/wit/deps/filesystem/types.wit new file mode 100644 index 000000000..11108fcda --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/filesystem/types.wit @@ -0,0 +1,634 @@ +package wasi:filesystem@0.2.0; +/// WASI filesystem is a filesystem API primarily intended to let users run WASI +/// programs that access their files on their existing filesystems, without +/// significant overhead. +/// +/// It is intended to be roughly portable between Unix-family platforms and +/// Windows, though it does not hide many of the major differences. +/// +/// Paths are passed as interface-type `string`s, meaning they must consist of +/// a sequence of Unicode Scalar Values (USVs). Some filesystems may contain +/// paths which are not accessible by this API. +/// +/// The directory separator in WASI is always the forward-slash (`/`). +/// +/// All paths in WASI are relative paths, and are interpreted relative to a +/// `descriptor` referring to a base directory. If a `path` argument to any WASI +/// function starts with `/`, or if any step of resolving a `path`, including +/// `..` and symbolic link steps, reaches a directory outside of the base +/// directory, or reaches a symlink to an absolute or rooted path in the +/// underlying filesystem, the function fails with `error-code::not-permitted`. +/// +/// For more information about WASI path resolution and sandboxing, see +/// [WASI filesystem path resolution]. +/// +/// [WASI filesystem path resolution]: https://github.com/WebAssembly/wasi-filesystem/blob/main/path-resolution.md +interface types { + use wasi:io/streams@0.2.0.{input-stream, output-stream, error}; + use wasi:clocks/wall-clock@0.2.0.{datetime}; + + /// File size or length of a region within a file. + type filesize = u64; + + /// The type of a filesystem object referenced by a descriptor. + /// + /// Note: This was called `filetype` in earlier versions of WASI. + enum descriptor-type { + /// The type of the descriptor or file is unknown or is different from + /// any of the other types specified. + unknown, + /// The descriptor refers to a block device inode. + block-device, + /// The descriptor refers to a character device inode. + character-device, + /// The descriptor refers to a directory inode. + directory, + /// The descriptor refers to a named pipe. + fifo, + /// The file refers to a symbolic link inode. + symbolic-link, + /// The descriptor refers to a regular file inode. + regular-file, + /// The descriptor refers to a socket. + socket, + } + + /// Descriptor flags. + /// + /// Note: This was called `fdflags` in earlier versions of WASI. + flags descriptor-flags { + /// Read mode: Data can be read. + read, + /// Write mode: Data can be written to. + write, + /// Request that writes be performed according to synchronized I/O file + /// integrity completion. The data stored in the file and the file's + /// metadata are synchronized. This is similar to `O_SYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + file-integrity-sync, + /// Request that writes be performed according to synchronized I/O data + /// integrity completion. Only the data stored in the file is + /// synchronized. This is similar to `O_DSYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + data-integrity-sync, + /// Requests that reads be performed at the same level of integrety + /// requested for writes. This is similar to `O_RSYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + requested-write-sync, + /// Mutating directories mode: Directory contents may be mutated. + /// + /// When this flag is unset on a descriptor, operations using the + /// descriptor which would create, rename, delete, modify the data or + /// metadata of filesystem objects, or obtain another handle which + /// would permit any of those, shall fail with `error-code::read-only` if + /// they would otherwise succeed. + /// + /// This may only be set on directories. + mutate-directory, + } + + /// File attributes. + /// + /// Note: This was called `filestat` in earlier versions of WASI. + record descriptor-stat { + /// File type. + %type: descriptor-type, + /// Number of hard links to the file. + link-count: link-count, + /// For regular files, the file size in bytes. For symbolic links, the + /// length in bytes of the pathname contained in the symbolic link. + size: filesize, + /// Last data access timestamp. + /// + /// If the `option` is none, the platform doesn't maintain an access + /// timestamp for this file. + data-access-timestamp: option, + /// Last data modification timestamp. + /// + /// If the `option` is none, the platform doesn't maintain a + /// modification timestamp for this file. + data-modification-timestamp: option, + /// Last file status-change timestamp. + /// + /// If the `option` is none, the platform doesn't maintain a + /// status-change timestamp for this file. + status-change-timestamp: option, + } + + /// Flags determining the method of how paths are resolved. + flags path-flags { + /// As long as the resolved path corresponds to a symbolic link, it is + /// expanded. + symlink-follow, + } + + /// Open flags used by `open-at`. + flags open-flags { + /// Create file if it does not exist, similar to `O_CREAT` in POSIX. + create, + /// Fail if not a directory, similar to `O_DIRECTORY` in POSIX. + directory, + /// Fail if file already exists, similar to `O_EXCL` in POSIX. + exclusive, + /// Truncate file to size 0, similar to `O_TRUNC` in POSIX. + truncate, + } + + /// Number of hard links to an inode. + type link-count = u64; + + /// When setting a timestamp, this gives the value to set it to. + variant new-timestamp { + /// Leave the timestamp set to its previous value. + no-change, + /// Set the timestamp to the current time of the system clock associated + /// with the filesystem. + now, + /// Set the timestamp to the given value. + timestamp(datetime), + } + + /// A directory entry. + record directory-entry { + /// The type of the file referred to by this directory entry. + %type: descriptor-type, + + /// The name of the object. + name: string, + } + + /// Error codes returned by functions, similar to `errno` in POSIX. + /// Not all of these error codes are returned by the functions provided by this + /// API; some are used in higher-level library layers, and others are provided + /// merely for alignment with POSIX. + enum error-code { + /// Permission denied, similar to `EACCES` in POSIX. + access, + /// Resource unavailable, or operation would block, similar to `EAGAIN` and `EWOULDBLOCK` in POSIX. + would-block, + /// Connection already in progress, similar to `EALREADY` in POSIX. + already, + /// Bad descriptor, similar to `EBADF` in POSIX. + bad-descriptor, + /// Device or resource busy, similar to `EBUSY` in POSIX. + busy, + /// Resource deadlock would occur, similar to `EDEADLK` in POSIX. + deadlock, + /// Storage quota exceeded, similar to `EDQUOT` in POSIX. + quota, + /// File exists, similar to `EEXIST` in POSIX. + exist, + /// File too large, similar to `EFBIG` in POSIX. + file-too-large, + /// Illegal byte sequence, similar to `EILSEQ` in POSIX. + illegal-byte-sequence, + /// Operation in progress, similar to `EINPROGRESS` in POSIX. + in-progress, + /// Interrupted function, similar to `EINTR` in POSIX. + interrupted, + /// Invalid argument, similar to `EINVAL` in POSIX. + invalid, + /// I/O error, similar to `EIO` in POSIX. + io, + /// Is a directory, similar to `EISDIR` in POSIX. + is-directory, + /// Too many levels of symbolic links, similar to `ELOOP` in POSIX. + loop, + /// Too many links, similar to `EMLINK` in POSIX. + too-many-links, + /// Message too large, similar to `EMSGSIZE` in POSIX. + message-size, + /// Filename too long, similar to `ENAMETOOLONG` in POSIX. + name-too-long, + /// No such device, similar to `ENODEV` in POSIX. + no-device, + /// No such file or directory, similar to `ENOENT` in POSIX. + no-entry, + /// No locks available, similar to `ENOLCK` in POSIX. + no-lock, + /// Not enough space, similar to `ENOMEM` in POSIX. + insufficient-memory, + /// No space left on device, similar to `ENOSPC` in POSIX. + insufficient-space, + /// Not a directory or a symbolic link to a directory, similar to `ENOTDIR` in POSIX. + not-directory, + /// Directory not empty, similar to `ENOTEMPTY` in POSIX. + not-empty, + /// State not recoverable, similar to `ENOTRECOVERABLE` in POSIX. + not-recoverable, + /// Not supported, similar to `ENOTSUP` and `ENOSYS` in POSIX. + unsupported, + /// Inappropriate I/O control operation, similar to `ENOTTY` in POSIX. + no-tty, + /// No such device or address, similar to `ENXIO` in POSIX. + no-such-device, + /// Value too large to be stored in data type, similar to `EOVERFLOW` in POSIX. + overflow, + /// Operation not permitted, similar to `EPERM` in POSIX. + not-permitted, + /// Broken pipe, similar to `EPIPE` in POSIX. + pipe, + /// Read-only file system, similar to `EROFS` in POSIX. + read-only, + /// Invalid seek, similar to `ESPIPE` in POSIX. + invalid-seek, + /// Text file busy, similar to `ETXTBSY` in POSIX. + text-file-busy, + /// Cross-device link, similar to `EXDEV` in POSIX. + cross-device, + } + + /// File or memory access pattern advisory information. + enum advice { + /// The application has no advice to give on its behavior with respect + /// to the specified data. + normal, + /// The application expects to access the specified data sequentially + /// from lower offsets to higher offsets. + sequential, + /// The application expects to access the specified data in a random + /// order. + random, + /// The application expects to access the specified data in the near + /// future. + will-need, + /// The application expects that it will not access the specified data + /// in the near future. + dont-need, + /// The application expects to access the specified data once and then + /// not reuse it thereafter. + no-reuse, + } + + /// A 128-bit hash value, split into parts because wasm doesn't have a + /// 128-bit integer type. + record metadata-hash-value { + /// 64 bits of a 128-bit hash value. + lower: u64, + /// Another 64 bits of a 128-bit hash value. + upper: u64, + } + + /// A descriptor is a reference to a filesystem object, which may be a file, + /// directory, named pipe, special file, or other object on which filesystem + /// calls may be made. + resource descriptor { + /// Return a stream for reading from a file, if available. + /// + /// May fail with an error-code describing why the file cannot be read. + /// + /// Multiple read, write, and append streams may be active on the same open + /// file and they do not interfere with each other. + /// + /// Note: This allows using `read-stream`, which is similar to `read` in POSIX. + read-via-stream: func( + /// The offset within the file at which to start reading. + offset: filesize, + ) -> result; + + /// Return a stream for writing to a file, if available. + /// + /// May fail with an error-code describing why the file cannot be written. + /// + /// Note: This allows using `write-stream`, which is similar to `write` in + /// POSIX. + write-via-stream: func( + /// The offset within the file at which to start writing. + offset: filesize, + ) -> result; + + /// Return a stream for appending to a file, if available. + /// + /// May fail with an error-code describing why the file cannot be appended. + /// + /// Note: This allows using `write-stream`, which is similar to `write` with + /// `O_APPEND` in in POSIX. + append-via-stream: func() -> result; + + /// Provide file advisory information on a descriptor. + /// + /// This is similar to `posix_fadvise` in POSIX. + advise: func( + /// The offset within the file to which the advisory applies. + offset: filesize, + /// The length of the region to which the advisory applies. + length: filesize, + /// The advice. + advice: advice + ) -> result<_, error-code>; + + /// Synchronize the data of a file to disk. + /// + /// This function succeeds with no effect if the file descriptor is not + /// opened for writing. + /// + /// Note: This is similar to `fdatasync` in POSIX. + sync-data: func() -> result<_, error-code>; + + /// Get flags associated with a descriptor. + /// + /// Note: This returns similar flags to `fcntl(fd, F_GETFL)` in POSIX. + /// + /// Note: This returns the value that was the `fs_flags` value returned + /// from `fdstat_get` in earlier versions of WASI. + get-flags: func() -> result; + + /// Get the dynamic type of a descriptor. + /// + /// Note: This returns the same value as the `type` field of the `fd-stat` + /// returned by `stat`, `stat-at` and similar. + /// + /// Note: This returns similar flags to the `st_mode & S_IFMT` value provided + /// by `fstat` in POSIX. + /// + /// Note: This returns the value that was the `fs_filetype` value returned + /// from `fdstat_get` in earlier versions of WASI. + get-type: func() -> result; + + /// Adjust the size of an open file. If this increases the file's size, the + /// extra bytes are filled with zeros. + /// + /// Note: This was called `fd_filestat_set_size` in earlier versions of WASI. + set-size: func(size: filesize) -> result<_, error-code>; + + /// Adjust the timestamps of an open file or directory. + /// + /// Note: This is similar to `futimens` in POSIX. + /// + /// Note: This was called `fd_filestat_set_times` in earlier versions of WASI. + set-times: func( + /// The desired values of the data access timestamp. + data-access-timestamp: new-timestamp, + /// The desired values of the data modification timestamp. + data-modification-timestamp: new-timestamp, + ) -> result<_, error-code>; + + /// Read from a descriptor, without using and updating the descriptor's offset. + /// + /// This function returns a list of bytes containing the data that was + /// read, along with a bool which, when true, indicates that the end of the + /// file was reached. The returned list will contain up to `length` bytes; it + /// may return fewer than requested, if the end of the file is reached or + /// if the I/O operation is interrupted. + /// + /// In the future, this may change to return a `stream`. + /// + /// Note: This is similar to `pread` in POSIX. + read: func( + /// The maximum number of bytes to read. + length: filesize, + /// The offset within the file at which to read. + offset: filesize, + ) -> result, bool>, error-code>; + + /// Write to a descriptor, without using and updating the descriptor's offset. + /// + /// It is valid to write past the end of a file; the file is extended to the + /// extent of the write, with bytes between the previous end and the start of + /// the write set to zero. + /// + /// In the future, this may change to take a `stream`. + /// + /// Note: This is similar to `pwrite` in POSIX. + write: func( + /// Data to write + buffer: list, + /// The offset within the file at which to write. + offset: filesize, + ) -> result; + + /// Read directory entries from a directory. + /// + /// On filesystems where directories contain entries referring to themselves + /// and their parents, often named `.` and `..` respectively, these entries + /// are omitted. + /// + /// This always returns a new stream which starts at the beginning of the + /// directory. Multiple streams may be active on the same directory, and they + /// do not interfere with each other. + read-directory: func() -> result; + + /// Synchronize the data and metadata of a file to disk. + /// + /// This function succeeds with no effect if the file descriptor is not + /// opened for writing. + /// + /// Note: This is similar to `fsync` in POSIX. + sync: func() -> result<_, error-code>; + + /// Create a directory. + /// + /// Note: This is similar to `mkdirat` in POSIX. + create-directory-at: func( + /// The relative path at which to create the directory. + path: string, + ) -> result<_, error-code>; + + /// Return the attributes of an open file or directory. + /// + /// Note: This is similar to `fstat` in POSIX, except that it does not return + /// device and inode information. For testing whether two descriptors refer to + /// the same underlying filesystem object, use `is-same-object`. To obtain + /// additional data that can be used do determine whether a file has been + /// modified, use `metadata-hash`. + /// + /// Note: This was called `fd_filestat_get` in earlier versions of WASI. + stat: func() -> result; + + /// Return the attributes of a file or directory. + /// + /// Note: This is similar to `fstatat` in POSIX, except that it does not + /// return device and inode information. See the `stat` description for a + /// discussion of alternatives. + /// + /// Note: This was called `path_filestat_get` in earlier versions of WASI. + stat-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to inspect. + path: string, + ) -> result; + + /// Adjust the timestamps of a file or directory. + /// + /// Note: This is similar to `utimensat` in POSIX. + /// + /// Note: This was called `path_filestat_set_times` in earlier versions of + /// WASI. + set-times-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to operate on. + path: string, + /// The desired values of the data access timestamp. + data-access-timestamp: new-timestamp, + /// The desired values of the data modification timestamp. + data-modification-timestamp: new-timestamp, + ) -> result<_, error-code>; + + /// Create a hard link. + /// + /// Note: This is similar to `linkat` in POSIX. + link-at: func( + /// Flags determining the method of how the path is resolved. + old-path-flags: path-flags, + /// The relative source path from which to link. + old-path: string, + /// The base directory for `new-path`. + new-descriptor: borrow, + /// The relative destination path at which to create the hard link. + new-path: string, + ) -> result<_, error-code>; + + /// Open a file or directory. + /// + /// The returned descriptor is not guaranteed to be the lowest-numbered + /// descriptor not currently open/ it is randomized to prevent applications + /// from depending on making assumptions about indexes, since this is + /// error-prone in multi-threaded contexts. The returned descriptor is + /// guaranteed to be less than 2**31. + /// + /// If `flags` contains `descriptor-flags::mutate-directory`, and the base + /// descriptor doesn't have `descriptor-flags::mutate-directory` set, + /// `open-at` fails with `error-code::read-only`. + /// + /// If `flags` contains `write` or `mutate-directory`, or `open-flags` + /// contains `truncate` or `create`, and the base descriptor doesn't have + /// `descriptor-flags::mutate-directory` set, `open-at` fails with + /// `error-code::read-only`. + /// + /// Note: This is similar to `openat` in POSIX. + open-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the object to open. + path: string, + /// The method by which to open the file. + open-flags: open-flags, + /// Flags to use for the resulting descriptor. + %flags: descriptor-flags, + ) -> result; + + /// Read the contents of a symbolic link. + /// + /// If the contents contain an absolute or rooted path in the underlying + /// filesystem, this function fails with `error-code::not-permitted`. + /// + /// Note: This is similar to `readlinkat` in POSIX. + readlink-at: func( + /// The relative path of the symbolic link from which to read. + path: string, + ) -> result; + + /// Remove a directory. + /// + /// Return `error-code::not-empty` if the directory is not empty. + /// + /// Note: This is similar to `unlinkat(fd, path, AT_REMOVEDIR)` in POSIX. + remove-directory-at: func( + /// The relative path to a directory to remove. + path: string, + ) -> result<_, error-code>; + + /// Rename a filesystem object. + /// + /// Note: This is similar to `renameat` in POSIX. + rename-at: func( + /// The relative source path of the file or directory to rename. + old-path: string, + /// The base directory for `new-path`. + new-descriptor: borrow, + /// The relative destination path to which to rename the file or directory. + new-path: string, + ) -> result<_, error-code>; + + /// Create a symbolic link (also known as a "symlink"). + /// + /// If `old-path` starts with `/`, the function fails with + /// `error-code::not-permitted`. + /// + /// Note: This is similar to `symlinkat` in POSIX. + symlink-at: func( + /// The contents of the symbolic link. + old-path: string, + /// The relative destination path at which to create the symbolic link. + new-path: string, + ) -> result<_, error-code>; + + /// Unlink a filesystem object that is not a directory. + /// + /// Return `error-code::is-directory` if the path refers to a directory. + /// Note: This is similar to `unlinkat(fd, path, 0)` in POSIX. + unlink-file-at: func( + /// The relative path to a file to unlink. + path: string, + ) -> result<_, error-code>; + + /// Test whether two descriptors refer to the same filesystem object. + /// + /// In POSIX, this corresponds to testing whether the two descriptors have the + /// same device (`st_dev`) and inode (`st_ino` or `d_ino`) numbers. + /// wasi-filesystem does not expose device and inode numbers, so this function + /// may be used instead. + is-same-object: func(other: borrow) -> bool; + + /// Return a hash of the metadata associated with a filesystem object referred + /// to by a descriptor. + /// + /// This returns a hash of the last-modification timestamp and file size, and + /// may also include the inode number, device number, birth timestamp, and + /// other metadata fields that may change when the file is modified or + /// replaced. It may also include a secret value chosen by the + /// implementation and not otherwise exposed. + /// + /// Implementations are encourated to provide the following properties: + /// + /// - If the file is not modified or replaced, the computed hash value should + /// usually not change. + /// - If the object is modified or replaced, the computed hash value should + /// usually change. + /// - The inputs to the hash should not be easily computable from the + /// computed hash. + /// + /// However, none of these is required. + metadata-hash: func() -> result; + + /// Return a hash of the metadata associated with a filesystem object referred + /// to by a directory descriptor and a relative path. + /// + /// This performs the same hash computation as `metadata-hash`. + metadata-hash-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to inspect. + path: string, + ) -> result; + } + + /// A stream of directory entries. + resource directory-entry-stream { + /// Read a single directory entry from a `directory-entry-stream`. + read-directory-entry: func() -> result, error-code>; + } + + /// Attempts to extract a filesystem-related `error-code` from the stream + /// `error` provided. + /// + /// Stream operations which return `stream-error::last-operation-failed` + /// have a payload with more information about the operation that failed. + /// This payload can be passed through to this function to see if there's + /// filesystem-related information about the error to return. + /// + /// Note that this function is fallible because not all stream-related + /// errors are filesystem-related errors. + filesystem-error-code: func(err: borrow) -> option; +} diff --git a/examples/go/http-outgoing-client/wit/deps/filesystem/world.wit b/examples/go/http-outgoing-client/wit/deps/filesystem/world.wit new file mode 100644 index 000000000..663f57920 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/filesystem/world.wit @@ -0,0 +1,6 @@ +package wasi:filesystem@0.2.0; + +world imports { + import types; + import preopens; +} diff --git a/examples/go/http-outgoing-client/wit/deps/http/handler.wit b/examples/go/http-outgoing-client/wit/deps/http/handler.wit new file mode 100644 index 000000000..a34a0649d --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/http/handler.wit @@ -0,0 +1,43 @@ +/// This interface defines a handler of incoming HTTP Requests. It should +/// be exported by components which can respond to HTTP Requests. +interface incoming-handler { + use types.{incoming-request, response-outparam}; + + /// This function is invoked with an incoming HTTP Request, and a resource + /// `response-outparam` which provides the capability to reply with an HTTP + /// Response. The response is sent by calling the `response-outparam.set` + /// method, which allows execution to continue after the response has been + /// sent. This enables both streaming to the response body, and performing other + /// work. + /// + /// The implementor of this function must write a response to the + /// `response-outparam` before returning, or else the caller will respond + /// with an error on its behalf. + handle: func( + request: incoming-request, + response-out: response-outparam + ); +} + +/// This interface defines a handler of outgoing HTTP Requests. It should be +/// imported by components which wish to make HTTP Requests. +interface outgoing-handler { + use types.{ + outgoing-request, request-options, future-incoming-response, error-code + }; + + /// This function is invoked with an outgoing HTTP Request, and it returns + /// a resource `future-incoming-response` which represents an HTTP Response + /// which may arrive in the future. + /// + /// The `options` argument accepts optional parameters for the HTTP + /// protocol's transport layer. + /// + /// This function may return an error if the `outgoing-request` is invalid + /// or not allowed to be made. Otherwise, protocol errors are reported + /// through the `future-incoming-response`. + handle: func( + request: outgoing-request, + options: option + ) -> result; +} diff --git a/examples/go/http-outgoing-client/wit/deps/http/proxy.wit b/examples/go/http-outgoing-client/wit/deps/http/proxy.wit new file mode 100644 index 000000000..687c24d23 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/http/proxy.wit @@ -0,0 +1,32 @@ +package wasi:http@0.2.0; + +/// The `wasi:http/proxy` world captures a widely-implementable intersection of +/// hosts that includes HTTP forward and reverse proxies. Components targeting +/// this world may concurrently stream in and out any number of incoming and +/// outgoing HTTP requests. +world proxy { + /// HTTP proxies have access to time and randomness. + include wasi:clocks/imports@0.2.0; + import wasi:random/random@0.2.0; + + /// Proxies have standard output and error streams which are expected to + /// terminate in a developer-facing console provided by the host. + import wasi:cli/stdout@0.2.0; + import wasi:cli/stderr@0.2.0; + + /// TODO: this is a temporary workaround until component tooling is able to + /// gracefully handle the absence of stdin. Hosts must return an eof stream + /// for this import, which is what wasi-libc + tooling will do automatically + /// when this import is properly removed. + import wasi:cli/stdin@0.2.0; + + /// This is the default handler to use when user code simply wants to make an + /// HTTP request (e.g., via `fetch()`). + import outgoing-handler; + + /// The host delivers incoming HTTP requests to a component by calling the + /// `handle` function of this exported interface. A host may arbitrarily reuse + /// or not reuse component instance when delivering incoming HTTP requests and + /// thus a component must be able to handle 0..N calls to `handle`. + export incoming-handler; +} diff --git a/examples/go/http-outgoing-client/wit/deps/http/types.wit b/examples/go/http-outgoing-client/wit/deps/http/types.wit new file mode 100644 index 000000000..755ac6a6b --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/http/types.wit @@ -0,0 +1,570 @@ +/// This interface defines all of the types and methods for implementing +/// HTTP Requests and Responses, both incoming and outgoing, as well as +/// their headers, trailers, and bodies. +interface types { + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + use wasi:io/streams@0.2.0.{input-stream, output-stream}; + use wasi:io/error@0.2.0.{error as io-error}; + use wasi:io/poll@0.2.0.{pollable}; + + /// This type corresponds to HTTP standard Methods. + variant method { + get, + head, + post, + put, + delete, + connect, + options, + trace, + patch, + other(string) + } + + /// This type corresponds to HTTP standard Related Schemes. + variant scheme { + HTTP, + HTTPS, + other(string) + } + + /// These cases are inspired by the IANA HTTP Proxy Error Types: + /// https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-types + variant error-code { + DNS-timeout, + DNS-error(DNS-error-payload), + destination-not-found, + destination-unavailable, + destination-IP-prohibited, + destination-IP-unroutable, + connection-refused, + connection-terminated, + connection-timeout, + connection-read-timeout, + connection-write-timeout, + connection-limit-reached, + TLS-protocol-error, + TLS-certificate-error, + TLS-alert-received(TLS-alert-received-payload), + HTTP-request-denied, + HTTP-request-length-required, + HTTP-request-body-size(option), + HTTP-request-method-invalid, + HTTP-request-URI-invalid, + HTTP-request-URI-too-long, + HTTP-request-header-section-size(option), + HTTP-request-header-size(option), + HTTP-request-trailer-section-size(option), + HTTP-request-trailer-size(field-size-payload), + HTTP-response-incomplete, + HTTP-response-header-section-size(option), + HTTP-response-header-size(field-size-payload), + HTTP-response-body-size(option), + HTTP-response-trailer-section-size(option), + HTTP-response-trailer-size(field-size-payload), + HTTP-response-transfer-coding(option), + HTTP-response-content-coding(option), + HTTP-response-timeout, + HTTP-upgrade-failed, + HTTP-protocol-error, + loop-detected, + configuration-error, + /// This is a catch-all error for anything that doesn't fit cleanly into a + /// more specific case. It also includes an optional string for an + /// unstructured description of the error. Users should not depend on the + /// string for diagnosing errors, as it's not required to be consistent + /// between implementations. + internal-error(option) + } + + /// Defines the case payload type for `DNS-error` above: + record DNS-error-payload { + rcode: option, + info-code: option + } + + /// Defines the case payload type for `TLS-alert-received` above: + record TLS-alert-received-payload { + alert-id: option, + alert-message: option + } + + /// Defines the case payload type for `HTTP-response-{header,trailer}-size` above: + record field-size-payload { + field-name: option, + field-size: option + } + + /// Attempts to extract a http-related `error` from the wasi:io `error` + /// provided. + /// + /// Stream operations which return + /// `wasi:io/stream/stream-error::last-operation-failed` have a payload of + /// type `wasi:io/error/error` with more information about the operation + /// that failed. This payload can be passed through to this function to see + /// if there's http-related information about the error to return. + /// + /// Note that this function is fallible because not all io-errors are + /// http-related errors. + http-error-code: func(err: borrow) -> option; + + /// This type enumerates the different kinds of errors that may occur when + /// setting or appending to a `fields` resource. + variant header-error { + /// This error indicates that a `field-key` or `field-value` was + /// syntactically invalid when used with an operation that sets headers in a + /// `fields`. + invalid-syntax, + + /// This error indicates that a forbidden `field-key` was used when trying + /// to set a header in a `fields`. + forbidden, + + /// This error indicates that the operation on the `fields` was not + /// permitted because the fields are immutable. + immutable, + } + + /// Field keys are always strings. + type field-key = string; + + /// Field values should always be ASCII strings. However, in + /// reality, HTTP implementations often have to interpret malformed values, + /// so they are provided as a list of bytes. + type field-value = list; + + /// This following block defines the `fields` resource which corresponds to + /// HTTP standard Fields. Fields are a common representation used for both + /// Headers and Trailers. + /// + /// A `fields` may be mutable or immutable. A `fields` created using the + /// constructor, `from-list`, or `clone` will be mutable, but a `fields` + /// resource given by other means (including, but not limited to, + /// `incoming-request.headers`, `outgoing-request.headers`) might be be + /// immutable. In an immutable fields, the `set`, `append`, and `delete` + /// operations will fail with `header-error.immutable`. + resource fields { + + /// Construct an empty HTTP Fields. + /// + /// The resulting `fields` is mutable. + constructor(); + + /// Construct an HTTP Fields. + /// + /// The resulting `fields` is mutable. + /// + /// The list represents each key-value pair in the Fields. Keys + /// which have multiple values are represented by multiple entries in this + /// list with the same key. + /// + /// The tuple is a pair of the field key, represented as a string, and + /// Value, represented as a list of bytes. In a valid Fields, all keys + /// and values are valid UTF-8 strings. However, values are not always + /// well-formed, so they are represented as a raw list of bytes. + /// + /// An error result will be returned if any header or value was + /// syntactically invalid, or if a header was forbidden. + from-list: static func( + entries: list> + ) -> result; + + /// Get all of the values corresponding to a key. If the key is not present + /// in this `fields`, an empty list is returned. However, if the key is + /// present but empty, this is represented by a list with one or more + /// empty field-values present. + get: func(name: field-key) -> list; + + /// Returns `true` when the key is present in this `fields`. If the key is + /// syntactically invalid, `false` is returned. + has: func(name: field-key) -> bool; + + /// Set all of the values for a key. Clears any existing values for that + /// key, if they have been set. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + set: func(name: field-key, value: list) -> result<_, header-error>; + + /// Delete all values for a key. Does nothing if no values for the key + /// exist. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + delete: func(name: field-key) -> result<_, header-error>; + + /// Append a value for a key. Does not change or delete any existing + /// values for that key. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + append: func(name: field-key, value: field-value) -> result<_, header-error>; + + /// Retrieve the full set of keys and values in the Fields. Like the + /// constructor, the list represents each key-value pair. + /// + /// The outer list represents each key-value pair in the Fields. Keys + /// which have multiple values are represented by multiple entries in this + /// list with the same key. + entries: func() -> list>; + + /// Make a deep copy of the Fields. Equivelant in behavior to calling the + /// `fields` constructor on the return value of `entries`. The resulting + /// `fields` is mutable. + clone: func() -> fields; + } + + /// Headers is an alias for Fields. + type headers = fields; + + /// Trailers is an alias for Fields. + type trailers = fields; + + /// Represents an incoming HTTP Request. + resource incoming-request { + + /// Returns the method of the incoming request. + method: func() -> method; + + /// Returns the path with query parameters from the request, as a string. + path-with-query: func() -> option; + + /// Returns the protocol scheme from the request. + scheme: func() -> option; + + /// Returns the authority from the request, if it was present. + authority: func() -> option; + + /// Get the `headers` associated with the request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// The `headers` returned are a child resource: it must be dropped before + /// the parent `incoming-request` is dropped. Dropping this + /// `incoming-request` before all children are dropped will trap. + headers: func() -> headers; + + /// Gives the `incoming-body` associated with this request. Will only + /// return success at most once, and subsequent calls will return error. + consume: func() -> result; + } + + /// Represents an outgoing HTTP Request. + resource outgoing-request { + + /// Construct a new `outgoing-request` with a default `method` of `GET`, and + /// `none` values for `path-with-query`, `scheme`, and `authority`. + /// + /// * `headers` is the HTTP Headers for the Request. + /// + /// It is possible to construct, or manipulate with the accessor functions + /// below, an `outgoing-request` with an invalid combination of `scheme` + /// and `authority`, or `headers` which are not permitted to be sent. + /// It is the obligation of the `outgoing-handler.handle` implementation + /// to reject invalid constructions of `outgoing-request`. + constructor( + headers: headers + ); + + /// Returns the resource corresponding to the outgoing Body for this + /// Request. + /// + /// Returns success on the first call: the `outgoing-body` resource for + /// this `outgoing-request` can be retrieved at most once. Subsequent + /// calls will return error. + body: func() -> result; + + /// Get the Method for the Request. + method: func() -> method; + /// Set the Method for the Request. Fails if the string present in a + /// `method.other` argument is not a syntactically valid method. + set-method: func(method: method) -> result; + + /// Get the combination of the HTTP Path and Query for the Request. + /// When `none`, this represents an empty Path and empty Query. + path-with-query: func() -> option; + /// Set the combination of the HTTP Path and Query for the Request. + /// When `none`, this represents an empty Path and empty Query. Fails is the + /// string given is not a syntactically valid path and query uri component. + set-path-with-query: func(path-with-query: option) -> result; + + /// Get the HTTP Related Scheme for the Request. When `none`, the + /// implementation may choose an appropriate default scheme. + scheme: func() -> option; + /// Set the HTTP Related Scheme for the Request. When `none`, the + /// implementation may choose an appropriate default scheme. Fails if the + /// string given is not a syntactically valid uri scheme. + set-scheme: func(scheme: option) -> result; + + /// Get the HTTP Authority for the Request. A value of `none` may be used + /// with Related Schemes which do not require an Authority. The HTTP and + /// HTTPS schemes always require an authority. + authority: func() -> option; + /// Set the HTTP Authority for the Request. A value of `none` may be used + /// with Related Schemes which do not require an Authority. The HTTP and + /// HTTPS schemes always require an authority. Fails if the string given is + /// not a syntactically valid uri authority. + set-authority: func(authority: option) -> result; + + /// Get the headers associated with the Request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `outgoing-request` is dropped, or its ownership is transfered to + /// another component by e.g. `outgoing-handler.handle`. + headers: func() -> headers; + } + + /// Parameters for making an HTTP Request. Each of these parameters is + /// currently an optional timeout applicable to the transport layer of the + /// HTTP protocol. + /// + /// These timeouts are separate from any the user may use to bound a + /// blocking call to `wasi:io/poll.poll`. + resource request-options { + /// Construct a default `request-options` value. + constructor(); + + /// The timeout for the initial connect to the HTTP Server. + connect-timeout: func() -> option; + + /// Set the timeout for the initial connect to the HTTP Server. An error + /// return value indicates that this timeout is not supported. + set-connect-timeout: func(duration: option) -> result; + + /// The timeout for receiving the first byte of the Response body. + first-byte-timeout: func() -> option; + + /// Set the timeout for receiving the first byte of the Response body. An + /// error return value indicates that this timeout is not supported. + set-first-byte-timeout: func(duration: option) -> result; + + /// The timeout for receiving subsequent chunks of bytes in the Response + /// body stream. + between-bytes-timeout: func() -> option; + + /// Set the timeout for receiving subsequent chunks of bytes in the Response + /// body stream. An error return value indicates that this timeout is not + /// supported. + set-between-bytes-timeout: func(duration: option) -> result; + } + + /// Represents the ability to send an HTTP Response. + /// + /// This resource is used by the `wasi:http/incoming-handler` interface to + /// allow a Response to be sent corresponding to the Request provided as the + /// other argument to `incoming-handler.handle`. + resource response-outparam { + + /// Set the value of the `response-outparam` to either send a response, + /// or indicate an error. + /// + /// This method consumes the `response-outparam` to ensure that it is + /// called at most once. If it is never called, the implementation + /// will respond with an error. + /// + /// The user may provide an `error` to `response` to allow the + /// implementation determine how to respond with an HTTP error response. + set: static func( + param: response-outparam, + response: result, + ); + } + + /// This type corresponds to the HTTP standard Status Code. + type status-code = u16; + + /// Represents an incoming HTTP Response. + resource incoming-response { + + /// Returns the status code from the incoming response. + status: func() -> status-code; + + /// Returns the headers from the incoming response. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `incoming-response` is dropped. + headers: func() -> headers; + + /// Returns the incoming body. May be called at most once. Returns error + /// if called additional times. + consume: func() -> result; + } + + /// Represents an incoming HTTP Request or Response's Body. + /// + /// A body has both its contents - a stream of bytes - and a (possibly + /// empty) set of trailers, indicating that the full contents of the + /// body have been received. This resource represents the contents as + /// an `input-stream` and the delivery of trailers as a `future-trailers`, + /// and ensures that the user of this interface may only be consuming either + /// the body contents or waiting on trailers at any given time. + resource incoming-body { + + /// Returns the contents of the body, as a stream of bytes. + /// + /// Returns success on first call: the stream representing the contents + /// can be retrieved at most once. Subsequent calls will return error. + /// + /// The returned `input-stream` resource is a child: it must be dropped + /// before the parent `incoming-body` is dropped, or consumed by + /// `incoming-body.finish`. + /// + /// This invariant ensures that the implementation can determine whether + /// the user is consuming the contents of the body, waiting on the + /// `future-trailers` to be ready, or neither. This allows for network + /// backpressure is to be applied when the user is consuming the body, + /// and for that backpressure to not inhibit delivery of the trailers if + /// the user does not read the entire body. + %stream: func() -> result; + + /// Takes ownership of `incoming-body`, and returns a `future-trailers`. + /// This function will trap if the `input-stream` child is still alive. + finish: static func(this: incoming-body) -> future-trailers; + } + + /// Represents a future which may eventaully return trailers, or an error. + /// + /// In the case that the incoming HTTP Request or Response did not have any + /// trailers, this future will resolve to the empty set of trailers once the + /// complete Request or Response body has been received. + resource future-trailers { + + /// Returns a pollable which becomes ready when either the trailers have + /// been received, or an error has occured. When this pollable is ready, + /// the `get` method will return `some`. + subscribe: func() -> pollable; + + /// Returns the contents of the trailers, or an error which occured, + /// once the future is ready. + /// + /// The outer `option` represents future readiness. Users can wait on this + /// `option` to become `some` using the `subscribe` method. + /// + /// The outer `result` is used to retrieve the trailers or error at most + /// once. It will be success on the first call in which the outer option + /// is `some`, and error on subsequent calls. + /// + /// The inner `result` represents that either the HTTP Request or Response + /// body, as well as any trailers, were received successfully, or that an + /// error occured receiving them. The optional `trailers` indicates whether + /// or not trailers were present in the body. + /// + /// When some `trailers` are returned by this method, the `trailers` + /// resource is immutable, and a child. Use of the `set`, `append`, or + /// `delete` methods will return an error, and the resource must be + /// dropped before the parent `future-trailers` is dropped. + get: func() -> option, error-code>>>; + } + + /// Represents an outgoing HTTP Response. + resource outgoing-response { + + /// Construct an `outgoing-response`, with a default `status-code` of `200`. + /// If a different `status-code` is needed, it must be set via the + /// `set-status-code` method. + /// + /// * `headers` is the HTTP Headers for the Response. + constructor(headers: headers); + + /// Get the HTTP Status Code for the Response. + status-code: func() -> status-code; + + /// Set the HTTP Status Code for the Response. Fails if the status-code + /// given is not a valid http status code. + set-status-code: func(status-code: status-code) -> result; + + /// Get the headers associated with the Request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `outgoing-request` is dropped, or its ownership is transfered to + /// another component by e.g. `outgoing-handler.handle`. + headers: func() -> headers; + + /// Returns the resource corresponding to the outgoing Body for this Response. + /// + /// Returns success on the first call: the `outgoing-body` resource for + /// this `outgoing-response` can be retrieved at most once. Subsequent + /// calls will return error. + body: func() -> result; + } + + /// Represents an outgoing HTTP Request or Response's Body. + /// + /// A body has both its contents - a stream of bytes - and a (possibly + /// empty) set of trailers, inducating the full contents of the body + /// have been sent. This resource represents the contents as an + /// `output-stream` child resource, and the completion of the body (with + /// optional trailers) with a static function that consumes the + /// `outgoing-body` resource, and ensures that the user of this interface + /// may not write to the body contents after the body has been finished. + /// + /// If the user code drops this resource, as opposed to calling the static + /// method `finish`, the implementation should treat the body as incomplete, + /// and that an error has occured. The implementation should propogate this + /// error to the HTTP protocol by whatever means it has available, + /// including: corrupting the body on the wire, aborting the associated + /// Request, or sending a late status code for the Response. + resource outgoing-body { + + /// Returns a stream for writing the body contents. + /// + /// The returned `output-stream` is a child resource: it must be dropped + /// before the parent `outgoing-body` resource is dropped (or finished), + /// otherwise the `outgoing-body` drop or `finish` will trap. + /// + /// Returns success on the first call: the `output-stream` resource for + /// this `outgoing-body` may be retrieved at most once. Subsequent calls + /// will return error. + write: func() -> result; + + /// Finalize an outgoing body, optionally providing trailers. This must be + /// called to signal that the response is complete. If the `outgoing-body` + /// is dropped without calling `outgoing-body.finalize`, the implementation + /// should treat the body as corrupted. + /// + /// Fails if the body's `outgoing-request` or `outgoing-response` was + /// constructed with a Content-Length header, and the contents written + /// to the body (via `write`) does not match the value given in the + /// Content-Length. + finish: static func( + this: outgoing-body, + trailers: option + ) -> result<_, error-code>; + } + + /// Represents a future which may eventaully return an incoming HTTP + /// Response, or an error. + /// + /// This resource is returned by the `wasi:http/outgoing-handler` interface to + /// provide the HTTP Response corresponding to the sent Request. + resource future-incoming-response { + /// Returns a pollable which becomes ready when either the Response has + /// been received, or an error has occured. When this pollable is ready, + /// the `get` method will return `some`. + subscribe: func() -> pollable; + + /// Returns the incoming HTTP Response, or an error, once one is ready. + /// + /// The outer `option` represents future readiness. Users can wait on this + /// `option` to become `some` using the `subscribe` method. + /// + /// The outer `result` is used to retrieve the response or error at most + /// once. It will be success on the first call in which the outer option + /// is `some`, and error on subsequent calls. + /// + /// The inner `result` represents that either the incoming HTTP Response + /// status and headers have recieved successfully, or that an error + /// occured. Errors may also occur while consuming the response body, + /// but those will be reported by the `incoming-body` and its + /// `output-stream` child. + get: func() -> option>>; + + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/io/error.wit b/examples/go/http-outgoing-client/wit/deps/io/error.wit new file mode 100644 index 000000000..22e5b6489 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/io/error.wit @@ -0,0 +1,34 @@ +package wasi:io@0.2.0; + + +interface error { + /// A resource which represents some error information. + /// + /// The only method provided by this resource is `to-debug-string`, + /// which provides some human-readable information about the error. + /// + /// In the `wasi:io` package, this resource is returned through the + /// `wasi:io/streams/stream-error` type. + /// + /// To provide more specific error information, other interfaces may + /// provide functions to further "downcast" this error into more specific + /// error information. For example, `error`s returned in streams derived + /// from filesystem types to be described using the filesystem's own + /// error-code type, using the function + /// `wasi:filesystem/types/filesystem-error-code`, which takes a parameter + /// `borrow` and returns + /// `option`. + /// + /// The set of functions which can "downcast" an `error` into a more + /// concrete type is open. + resource error { + /// Returns a string that is suitable to assist humans in debugging + /// this error. + /// + /// WARNING: The returned string should not be consumed mechanically! + /// It may change across platforms, hosts, or other implementation + /// details. Parsing this string is a major platform-compatibility + /// hazard. + to-debug-string: func() -> string; + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/io/poll.wit b/examples/go/http-outgoing-client/wit/deps/io/poll.wit new file mode 100644 index 000000000..ddc67f8b7 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/io/poll.wit @@ -0,0 +1,41 @@ +package wasi:io@0.2.0; + +/// A poll API intended to let users wait for I/O events on multiple handles +/// at once. +interface poll { + /// `pollable` represents a single I/O event which may be ready, or not. + resource pollable { + + /// Return the readiness of a pollable. This function never blocks. + /// + /// Returns `true` when the pollable is ready, and `false` otherwise. + ready: func() -> bool; + + /// `block` returns immediately if the pollable is ready, and otherwise + /// blocks until ready. + /// + /// This function is equivalent to calling `poll.poll` on a list + /// containing only this pollable. + block: func(); + } + + /// Poll for completion on a set of pollables. + /// + /// This function takes a list of pollables, which identify I/O sources of + /// interest, and waits until one or more of the events is ready for I/O. + /// + /// The result `list` contains one or more indices of handles in the + /// argument list that is ready for I/O. + /// + /// If the list contains more elements than can be indexed with a `u32` + /// value, this function traps. + /// + /// A timeout can be implemented by adding a pollable from the + /// wasi-clocks API to the list. + /// + /// This function does not return a `result`; polling in itself does not + /// do any I/O so it doesn't fail. If any of the I/O sources identified by + /// the pollables has an error, it is indicated by marking the source as + /// being reaedy for I/O. + poll: func(in: list>) -> list; +} diff --git a/examples/go/http-outgoing-client/wit/deps/io/streams.wit b/examples/go/http-outgoing-client/wit/deps/io/streams.wit new file mode 100644 index 000000000..6d2f871e3 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/io/streams.wit @@ -0,0 +1,262 @@ +package wasi:io@0.2.0; + +/// WASI I/O is an I/O abstraction API which is currently focused on providing +/// stream types. +/// +/// In the future, the component model is expected to add built-in stream types; +/// when it does, they are expected to subsume this API. +interface streams { + use error.{error}; + use poll.{pollable}; + + /// An error for input-stream and output-stream operations. + variant stream-error { + /// The last operation (a write or flush) failed before completion. + /// + /// More information is available in the `error` payload. + last-operation-failed(error), + /// The stream is closed: no more input will be accepted by the + /// stream. A closed output-stream will return this error on all + /// future operations. + closed + } + + /// An input bytestream. + /// + /// `input-stream`s are *non-blocking* to the extent practical on underlying + /// platforms. I/O operations always return promptly; if fewer bytes are + /// promptly available than requested, they return the number of bytes promptly + /// available, which could even be zero. To wait for data to be available, + /// use the `subscribe` function to obtain a `pollable` which can be polled + /// for using `wasi:io/poll`. + resource input-stream { + /// Perform a non-blocking read from the stream. + /// + /// When the source of a `read` is binary data, the bytes from the source + /// are returned verbatim. When the source of a `read` is known to the + /// implementation to be text, bytes containing the UTF-8 encoding of the + /// text are returned. + /// + /// This function returns a list of bytes containing the read data, + /// when successful. The returned list will contain up to `len` bytes; + /// it may return fewer than requested, but not more. The list is + /// empty when no bytes are available for reading at this time. The + /// pollable given by `subscribe` will be ready when more bytes are + /// available. + /// + /// This function fails with a `stream-error` when the operation + /// encounters an error, giving `last-operation-failed`, or when the + /// stream is closed, giving `closed`. + /// + /// When the caller gives a `len` of 0, it represents a request to + /// read 0 bytes. If the stream is still open, this call should + /// succeed and return an empty list, or otherwise fail with `closed`. + /// + /// The `len` parameter is a `u64`, which could represent a list of u8 which + /// is not possible to allocate in wasm32, or not desirable to allocate as + /// as a return value by the callee. The callee may return a list of bytes + /// less than `len` in size while more bytes are available for reading. + read: func( + /// The maximum number of bytes to read + len: u64 + ) -> result, stream-error>; + + /// Read bytes from a stream, after blocking until at least one byte can + /// be read. Except for blocking, behavior is identical to `read`. + blocking-read: func( + /// The maximum number of bytes to read + len: u64 + ) -> result, stream-error>; + + /// Skip bytes from a stream. Returns number of bytes skipped. + /// + /// Behaves identical to `read`, except instead of returning a list + /// of bytes, returns the number of bytes consumed from the stream. + skip: func( + /// The maximum number of bytes to skip. + len: u64, + ) -> result; + + /// Skip bytes from a stream, after blocking until at least one byte + /// can be skipped. Except for blocking behavior, identical to `skip`. + blocking-skip: func( + /// The maximum number of bytes to skip. + len: u64, + ) -> result; + + /// Create a `pollable` which will resolve once either the specified stream + /// has bytes available to read or the other end of the stream has been + /// closed. + /// The created `pollable` is a child resource of the `input-stream`. + /// Implementations may trap if the `input-stream` is dropped before + /// all derived `pollable`s created with this function are dropped. + subscribe: func() -> pollable; + } + + + /// An output bytestream. + /// + /// `output-stream`s are *non-blocking* to the extent practical on + /// underlying platforms. Except where specified otherwise, I/O operations also + /// always return promptly, after the number of bytes that can be written + /// promptly, which could even be zero. To wait for the stream to be ready to + /// accept data, the `subscribe` function to obtain a `pollable` which can be + /// polled for using `wasi:io/poll`. + resource output-stream { + /// Check readiness for writing. This function never blocks. + /// + /// Returns the number of bytes permitted for the next call to `write`, + /// or an error. Calling `write` with more bytes than this function has + /// permitted will trap. + /// + /// When this function returns 0 bytes, the `subscribe` pollable will + /// become ready when this function will report at least 1 byte, or an + /// error. + check-write: func() -> result; + + /// Perform a write. This function never blocks. + /// + /// When the destination of a `write` is binary data, the bytes from + /// `contents` are written verbatim. When the destination of a `write` is + /// known to the implementation to be text, the bytes of `contents` are + /// transcoded from UTF-8 into the encoding of the destination and then + /// written. + /// + /// Precondition: check-write gave permit of Ok(n) and contents has a + /// length of less than or equal to n. Otherwise, this function will trap. + /// + /// returns Err(closed) without writing if the stream has closed since + /// the last call to check-write provided a permit. + write: func( + contents: list + ) -> result<_, stream-error>; + + /// Perform a write of up to 4096 bytes, and then flush the stream. Block + /// until all of these operations are complete, or an error occurs. + /// + /// This is a convenience wrapper around the use of `check-write`, + /// `subscribe`, `write`, and `flush`, and is implemented with the + /// following pseudo-code: + /// + /// ```text + /// let pollable = this.subscribe(); + /// while !contents.is_empty() { + /// // Wait for the stream to become writable + /// pollable.block(); + /// let Ok(n) = this.check-write(); // eliding error handling + /// let len = min(n, contents.len()); + /// let (chunk, rest) = contents.split_at(len); + /// this.write(chunk ); // eliding error handling + /// contents = rest; + /// } + /// this.flush(); + /// // Wait for completion of `flush` + /// pollable.block(); + /// // Check for any errors that arose during `flush` + /// let _ = this.check-write(); // eliding error handling + /// ``` + blocking-write-and-flush: func( + contents: list + ) -> result<_, stream-error>; + + /// Request to flush buffered output. This function never blocks. + /// + /// This tells the output-stream that the caller intends any buffered + /// output to be flushed. the output which is expected to be flushed + /// is all that has been passed to `write` prior to this call. + /// + /// Upon calling this function, the `output-stream` will not accept any + /// writes (`check-write` will return `ok(0)`) until the flush has + /// completed. The `subscribe` pollable will become ready when the + /// flush has completed and the stream can accept more writes. + flush: func() -> result<_, stream-error>; + + /// Request to flush buffered output, and block until flush completes + /// and stream is ready for writing again. + blocking-flush: func() -> result<_, stream-error>; + + /// Create a `pollable` which will resolve once the output-stream + /// is ready for more writing, or an error has occured. When this + /// pollable is ready, `check-write` will return `ok(n)` with n>0, or an + /// error. + /// + /// If the stream is closed, this pollable is always ready immediately. + /// + /// The created `pollable` is a child resource of the `output-stream`. + /// Implementations may trap if the `output-stream` is dropped before + /// all derived `pollable`s created with this function are dropped. + subscribe: func() -> pollable; + + /// Write zeroes to a stream. + /// + /// This should be used precisely like `write` with the exact same + /// preconditions (must use check-write first), but instead of + /// passing a list of bytes, you simply pass the number of zero-bytes + /// that should be written. + write-zeroes: func( + /// The number of zero-bytes to write + len: u64 + ) -> result<_, stream-error>; + + /// Perform a write of up to 4096 zeroes, and then flush the stream. + /// Block until all of these operations are complete, or an error + /// occurs. + /// + /// This is a convenience wrapper around the use of `check-write`, + /// `subscribe`, `write-zeroes`, and `flush`, and is implemented with + /// the following pseudo-code: + /// + /// ```text + /// let pollable = this.subscribe(); + /// while num_zeroes != 0 { + /// // Wait for the stream to become writable + /// pollable.block(); + /// let Ok(n) = this.check-write(); // eliding error handling + /// let len = min(n, num_zeroes); + /// this.write-zeroes(len); // eliding error handling + /// num_zeroes -= len; + /// } + /// this.flush(); + /// // Wait for completion of `flush` + /// pollable.block(); + /// // Check for any errors that arose during `flush` + /// let _ = this.check-write(); // eliding error handling + /// ``` + blocking-write-zeroes-and-flush: func( + /// The number of zero-bytes to write + len: u64 + ) -> result<_, stream-error>; + + /// Read from one stream and write to another. + /// + /// The behavior of splice is equivelant to: + /// 1. calling `check-write` on the `output-stream` + /// 2. calling `read` on the `input-stream` with the smaller of the + /// `check-write` permitted length and the `len` provided to `splice` + /// 3. calling `write` on the `output-stream` with that read data. + /// + /// Any error reported by the call to `check-write`, `read`, or + /// `write` ends the splice and reports that error. + /// + /// This function returns the number of bytes transferred; it may be less + /// than `len`. + splice: func( + /// The stream to read from + src: borrow, + /// The number of bytes to splice + len: u64, + ) -> result; + + /// Read from one stream and write to another, with blocking. + /// + /// This is similar to `splice`, except that it blocks until the + /// `output-stream` is ready for writing, and the `input-stream` + /// is ready for reading, before performing the `splice`. + blocking-splice: func( + /// The stream to read from + src: borrow, + /// The number of bytes to splice + len: u64, + ) -> result; + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/io/world.wit b/examples/go/http-outgoing-client/wit/deps/io/world.wit new file mode 100644 index 000000000..5f0b43fe5 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/io/world.wit @@ -0,0 +1,6 @@ +package wasi:io@0.2.0; + +world imports { + import streams; + import poll; +} diff --git a/examples/go/http-outgoing-client/wit/deps/random/insecure-seed.wit b/examples/go/http-outgoing-client/wit/deps/random/insecure-seed.wit new file mode 100644 index 000000000..47210ac6b --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/random/insecure-seed.wit @@ -0,0 +1,25 @@ +package wasi:random@0.2.0; +/// The insecure-seed interface for seeding hash-map DoS resistance. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface insecure-seed { + /// Return a 128-bit value that may contain a pseudo-random value. + /// + /// The returned value is not required to be computed from a CSPRNG, and may + /// even be entirely deterministic. Host implementations are encouraged to + /// provide pseudo-random values to any program exposed to + /// attacker-controlled content, to enable DoS protection built into many + /// languages' hash-map implementations. + /// + /// This function is intended to only be called once, by a source language + /// to initialize Denial Of Service (DoS) protection in its hash-map + /// implementation. + /// + /// # Expected future evolution + /// + /// This will likely be changed to a value import, to prevent it from being + /// called multiple times and potentially used for purposes other than DoS + /// protection. + insecure-seed: func() -> tuple; +} diff --git a/examples/go/http-outgoing-client/wit/deps/random/insecure.wit b/examples/go/http-outgoing-client/wit/deps/random/insecure.wit new file mode 100644 index 000000000..c58f4ee85 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/random/insecure.wit @@ -0,0 +1,22 @@ +package wasi:random@0.2.0; +/// The insecure interface for insecure pseudo-random numbers. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface insecure { + /// Return `len` insecure pseudo-random bytes. + /// + /// This function is not cryptographically secure. Do not use it for + /// anything related to security. + /// + /// There are no requirements on the values of the returned bytes, however + /// implementations are encouraged to return evenly distributed values with + /// a long period. + get-insecure-random-bytes: func(len: u64) -> list; + + /// Return an insecure pseudo-random `u64` value. + /// + /// This function returns the same type of pseudo-random data as + /// `get-insecure-random-bytes`, represented as a `u64`. + get-insecure-random-u64: func() -> u64; +} diff --git a/examples/go/http-outgoing-client/wit/deps/random/random.wit b/examples/go/http-outgoing-client/wit/deps/random/random.wit new file mode 100644 index 000000000..0c017f093 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/random/random.wit @@ -0,0 +1,26 @@ +package wasi:random@0.2.0; +/// WASI Random is a random data API. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface random { + /// Return `len` cryptographically-secure random or pseudo-random bytes. + /// + /// This function must produce data at least as cryptographically secure and + /// fast as an adequately seeded cryptographically-secure pseudo-random + /// number generator (CSPRNG). It must not block, from the perspective of + /// the calling program, under any circumstances, including on the first + /// request and on requests for numbers of bytes. The returned data must + /// always be unpredictable. + /// + /// This function must always return fresh data. Deterministic environments + /// must omit this function, rather than implementing it with deterministic + /// data. + get-random-bytes: func(len: u64) -> list; + + /// Return a cryptographically-secure random or pseudo-random `u64` value. + /// + /// This function returns the same type of data as `get-random-bytes`, + /// represented as a `u64`. + get-random-u64: func() -> u64; +} diff --git a/examples/go/http-outgoing-client/wit/deps/random/world.wit b/examples/go/http-outgoing-client/wit/deps/random/world.wit new file mode 100644 index 000000000..3da34914a --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/random/world.wit @@ -0,0 +1,7 @@ +package wasi:random@0.2.0; + +world imports { + import random; + import insecure; + import insecure-seed; +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/instance-network.wit b/examples/go/http-outgoing-client/wit/deps/sockets/instance-network.wit new file mode 100644 index 000000000..e455d0ff7 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/instance-network.wit @@ -0,0 +1,9 @@ + +/// This interface provides a value-export of the default network handle.. +interface instance-network { + use network.{network}; + + /// Get a handle to the default network. + instance-network: func() -> network; + +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/ip-name-lookup.wit b/examples/go/http-outgoing-client/wit/deps/sockets/ip-name-lookup.wit new file mode 100644 index 000000000..8e639ec59 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/ip-name-lookup.wit @@ -0,0 +1,51 @@ + +interface ip-name-lookup { + use wasi:io/poll@0.2.0.{pollable}; + use network.{network, error-code, ip-address}; + + + /// Resolve an internet host name to a list of IP addresses. + /// + /// Unicode domain names are automatically converted to ASCII using IDNA encoding. + /// If the input is an IP address string, the address is parsed and returned + /// as-is without making any external requests. + /// + /// See the wasi-socket proposal README.md for a comparison with getaddrinfo. + /// + /// This function never blocks. It either immediately fails or immediately + /// returns successfully with a `resolve-address-stream` that can be used + /// to (asynchronously) fetch the results. + /// + /// # Typical errors + /// - `invalid-argument`: `name` is a syntactically invalid domain name or IP address. + /// + /// # References: + /// - + /// - + /// - + /// - + resolve-addresses: func(network: borrow, name: string) -> result; + + resource resolve-address-stream { + /// Returns the next address from the resolver. + /// + /// This function should be called multiple times. On each call, it will + /// return the next address in connection order preference. If all + /// addresses have been exhausted, this function returns `none`. + /// + /// This function never returns IPv4-mapped IPv6 addresses. + /// + /// # Typical errors + /// - `name-unresolvable`: Name does not exist or has no suitable associated IP addresses. (EAI_NONAME, EAI_NODATA, EAI_ADDRFAMILY) + /// - `temporary-resolver-failure`: A temporary failure in name resolution occurred. (EAI_AGAIN) + /// - `permanent-resolver-failure`: A permanent failure in name resolution occurred. (EAI_FAIL) + /// - `would-block`: A result is not available yet. (EWOULDBLOCK, EAGAIN) + resolve-next-address: func() -> result, error-code>; + + /// Create a `pollable` which will resolve once the stream is ready for I/O. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/network.wit b/examples/go/http-outgoing-client/wit/deps/sockets/network.wit new file mode 100644 index 000000000..9cadf0650 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/network.wit @@ -0,0 +1,145 @@ + +interface network { + /// An opaque resource that represents access to (a subset of) the network. + /// This enables context-based security for networking. + /// There is no need for this to map 1:1 to a physical network interface. + resource network; + + /// Error codes. + /// + /// In theory, every API can return any error code. + /// In practice, API's typically only return the errors documented per API + /// combined with a couple of errors that are always possible: + /// - `unknown` + /// - `access-denied` + /// - `not-supported` + /// - `out-of-memory` + /// - `concurrency-conflict` + /// + /// See each individual API for what the POSIX equivalents are. They sometimes differ per API. + enum error-code { + /// Unknown error + unknown, + + /// Access denied. + /// + /// POSIX equivalent: EACCES, EPERM + access-denied, + + /// The operation is not supported. + /// + /// POSIX equivalent: EOPNOTSUPP + not-supported, + + /// One of the arguments is invalid. + /// + /// POSIX equivalent: EINVAL + invalid-argument, + + /// Not enough memory to complete the operation. + /// + /// POSIX equivalent: ENOMEM, ENOBUFS, EAI_MEMORY + out-of-memory, + + /// The operation timed out before it could finish completely. + timeout, + + /// This operation is incompatible with another asynchronous operation that is already in progress. + /// + /// POSIX equivalent: EALREADY + concurrency-conflict, + + /// Trying to finish an asynchronous operation that: + /// - has not been started yet, or: + /// - was already finished by a previous `finish-*` call. + /// + /// Note: this is scheduled to be removed when `future`s are natively supported. + not-in-progress, + + /// The operation has been aborted because it could not be completed immediately. + /// + /// Note: this is scheduled to be removed when `future`s are natively supported. + would-block, + + + /// The operation is not valid in the socket's current state. + invalid-state, + + /// A new socket resource could not be created because of a system limit. + new-socket-limit, + + /// A bind operation failed because the provided address is not an address that the `network` can bind to. + address-not-bindable, + + /// A bind operation failed because the provided address is already in use or because there are no ephemeral ports available. + address-in-use, + + /// The remote address is not reachable + remote-unreachable, + + + /// The TCP connection was forcefully rejected + connection-refused, + + /// The TCP connection was reset. + connection-reset, + + /// A TCP connection was aborted. + connection-aborted, + + + /// The size of a datagram sent to a UDP socket exceeded the maximum + /// supported size. + datagram-too-large, + + + /// Name does not exist or has no suitable associated IP addresses. + name-unresolvable, + + /// A temporary failure in name resolution occurred. + temporary-resolver-failure, + + /// A permanent failure in name resolution occurred. + permanent-resolver-failure, + } + + enum ip-address-family { + /// Similar to `AF_INET` in POSIX. + ipv4, + + /// Similar to `AF_INET6` in POSIX. + ipv6, + } + + type ipv4-address = tuple; + type ipv6-address = tuple; + + variant ip-address { + ipv4(ipv4-address), + ipv6(ipv6-address), + } + + record ipv4-socket-address { + /// sin_port + port: u16, + /// sin_addr + address: ipv4-address, + } + + record ipv6-socket-address { + /// sin6_port + port: u16, + /// sin6_flowinfo + flow-info: u32, + /// sin6_addr + address: ipv6-address, + /// sin6_scope_id + scope-id: u32, + } + + variant ip-socket-address { + ipv4(ipv4-socket-address), + ipv6(ipv6-socket-address), + } + +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/tcp-create-socket.wit b/examples/go/http-outgoing-client/wit/deps/sockets/tcp-create-socket.wit new file mode 100644 index 000000000..c7ddf1f22 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/tcp-create-socket.wit @@ -0,0 +1,27 @@ + +interface tcp-create-socket { + use network.{network, error-code, ip-address-family}; + use tcp.{tcp-socket}; + + /// Create a new TCP socket. + /// + /// Similar to `socket(AF_INET or AF_INET6, SOCK_STREAM, IPPROTO_TCP)` in POSIX. + /// On IPv6 sockets, IPV6_V6ONLY is enabled by default and can't be configured otherwise. + /// + /// This function does not require a network capability handle. This is considered to be safe because + /// at time of creation, the socket is not bound to any `network` yet. Up to the moment `bind`/`connect` + /// is called, the socket is effectively an in-memory configuration object, unable to communicate with the outside world. + /// + /// All sockets are non-blocking. Use the wasi-poll interface to block on asynchronous operations. + /// + /// # Typical errors + /// - `not-supported`: The specified `address-family` is not supported. (EAFNOSUPPORT) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References + /// - + /// - + /// - + /// - + create-tcp-socket: func(address-family: ip-address-family) -> result; +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/tcp.wit b/examples/go/http-outgoing-client/wit/deps/sockets/tcp.wit new file mode 100644 index 000000000..5902b9ee0 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/tcp.wit @@ -0,0 +1,353 @@ + +interface tcp { + use wasi:io/streams@0.2.0.{input-stream, output-stream}; + use wasi:io/poll@0.2.0.{pollable}; + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + use network.{network, error-code, ip-socket-address, ip-address-family}; + + enum shutdown-type { + /// Similar to `SHUT_RD` in POSIX. + receive, + + /// Similar to `SHUT_WR` in POSIX. + send, + + /// Similar to `SHUT_RDWR` in POSIX. + both, + } + + /// A TCP socket resource. + /// + /// The socket can be in one of the following states: + /// - `unbound` + /// - `bind-in-progress` + /// - `bound` (See note below) + /// - `listen-in-progress` + /// - `listening` + /// - `connect-in-progress` + /// - `connected` + /// - `closed` + /// See + /// for a more information. + /// + /// Note: Except where explicitly mentioned, whenever this documentation uses + /// the term "bound" without backticks it actually means: in the `bound` state *or higher*. + /// (i.e. `bound`, `listen-in-progress`, `listening`, `connect-in-progress` or `connected`) + /// + /// In addition to the general error codes documented on the + /// `network::error-code` type, TCP socket methods may always return + /// `error(invalid-state)` when in the `closed` state. + resource tcp-socket { + /// Bind the socket to a specific network on the provided IP address and port. + /// + /// If the IP address is zero (`0.0.0.0` in IPv4, `::` in IPv6), it is left to the implementation to decide which + /// network interface(s) to bind to. + /// If the TCP/UDP port is zero, the socket will be bound to a random free port. + /// + /// Bind can be attempted multiple times on the same socket, even with + /// different arguments on each iteration. But never concurrently and + /// only as long as the previous bind failed. Once a bind succeeds, the + /// binding can't be changed anymore. + /// + /// # Typical errors + /// - `invalid-argument`: The `local-address` has the wrong address family. (EAFNOSUPPORT, EFAULT on Windows) + /// - `invalid-argument`: `local-address` is not a unicast address. (EINVAL) + /// - `invalid-argument`: `local-address` is an IPv4-mapped IPv6 address. (EINVAL) + /// - `invalid-state`: The socket is already bound. (EINVAL) + /// - `address-in-use`: No ephemeral ports available. (EADDRINUSE, ENOBUFS on Windows) + /// - `address-in-use`: Address is already in use. (EADDRINUSE) + /// - `address-not-bindable`: `local-address` is not an address that the `network` can bind to. (EADDRNOTAVAIL) + /// - `not-in-progress`: A `bind` operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// When binding to a non-zero port, this bind operation shouldn't be affected by the TIME_WAIT + /// state of a recently closed socket on the same local address. In practice this means that the SO_REUSEADDR + /// socket option should be set implicitly on all platforms, except on Windows where this is the default behavior + /// and SO_REUSEADDR performs something different entirely. + /// + /// Unlike in POSIX, in WASI the bind operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `bind` as part of either `start-bind` or `finish-bind`. + /// + /// # References + /// - + /// - + /// - + /// - + start-bind: func(network: borrow, local-address: ip-socket-address) -> result<_, error-code>; + finish-bind: func() -> result<_, error-code>; + + /// Connect to a remote endpoint. + /// + /// On success: + /// - the socket is transitioned into the `connection` state. + /// - a pair of streams is returned that can be used to read & write to the connection + /// + /// After a failed connection attempt, the socket will be in the `closed` + /// state and the only valid action left is to `drop` the socket. A single + /// socket can not be used to connect more than once. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: `remote-address` is not a unicast address. (EINVAL, ENETUNREACH on Linux, EAFNOSUPPORT on MacOS) + /// - `invalid-argument`: `remote-address` is an IPv4-mapped IPv6 address. (EINVAL, EADDRNOTAVAIL on Illumos) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EADDRNOTAVAIL on Windows) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EADDRNOTAVAIL on Windows) + /// - `invalid-argument`: The socket is already attached to a different network. The `network` passed to `connect` must be identical to the one passed to `bind`. + /// - `invalid-state`: The socket is already in the `connected` state. (EISCONN) + /// - `invalid-state`: The socket is already in the `listening` state. (EOPNOTSUPP, EINVAL on Windows) + /// - `timeout`: Connection timed out. (ETIMEDOUT) + /// - `connection-refused`: The connection was forcefully rejected. (ECONNREFUSED) + /// - `connection-reset`: The connection was reset. (ECONNRESET) + /// - `connection-aborted`: The connection was aborted. (ECONNABORTED) + /// - `remote-unreachable`: The remote address is not reachable. (EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE, EADDRNOTAVAIL on Linux, EAGAIN on BSD) + /// - `not-in-progress`: A connect operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// The POSIX equivalent of `start-connect` is the regular `connect` syscall. + /// Because all WASI sockets are non-blocking this is expected to return + /// EINPROGRESS, which should be translated to `ok()` in WASI. + /// + /// The POSIX equivalent of `finish-connect` is a `poll` for event `POLLOUT` + /// with a timeout of 0 on the socket descriptor. Followed by a check for + /// the `SO_ERROR` socket option, in case the poll signaled readiness. + /// + /// # References + /// - + /// - + /// - + /// - + start-connect: func(network: borrow, remote-address: ip-socket-address) -> result<_, error-code>; + finish-connect: func() -> result, error-code>; + + /// Start listening for new connections. + /// + /// Transitions the socket into the `listening` state. + /// + /// Unlike POSIX, the socket must already be explicitly bound. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. (EDESTADDRREQ) + /// - `invalid-state`: The socket is already in the `connected` state. (EISCONN, EINVAL on BSD) + /// - `invalid-state`: The socket is already in the `listening` state. + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE) + /// - `not-in-progress`: A listen operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// Unlike in POSIX, in WASI the listen operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `listen` as part of either `start-listen` or `finish-listen`. + /// + /// # References + /// - + /// - + /// - + /// - + start-listen: func() -> result<_, error-code>; + finish-listen: func() -> result<_, error-code>; + + /// Accept a new client socket. + /// + /// The returned socket is bound and in the `connected` state. The following properties are inherited from the listener socket: + /// - `address-family` + /// - `keep-alive-enabled` + /// - `keep-alive-idle-time` + /// - `keep-alive-interval` + /// - `keep-alive-count` + /// - `hop-limit` + /// - `receive-buffer-size` + /// - `send-buffer-size` + /// + /// On success, this function returns the newly accepted client socket along with + /// a pair of streams that can be used to read & write to the connection. + /// + /// # Typical errors + /// - `invalid-state`: Socket is not in the `listening` state. (EINVAL) + /// - `would-block`: No pending connections at the moment. (EWOULDBLOCK, EAGAIN) + /// - `connection-aborted`: An incoming connection was pending, but was terminated by the client before this listener could accept it. (ECONNABORTED) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References + /// - + /// - + /// - + /// - + accept: func() -> result, error-code>; + + /// Get the bound local address. + /// + /// POSIX mentions: + /// > If the socket has not been bound to a local name, the value + /// > stored in the object pointed to by `address` is unspecified. + /// + /// WASI is stricter and requires `local-address` to return `invalid-state` when the socket hasn't been bound yet. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. + /// + /// # References + /// - + /// - + /// - + /// - + local-address: func() -> result; + + /// Get the remote address. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not connected to a remote address. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + remote-address: func() -> result; + + /// Whether the socket is in the `listening` state. + /// + /// Equivalent to the SO_ACCEPTCONN socket option. + is-listening: func() -> bool; + + /// Whether this is a IPv4 or IPv6 socket. + /// + /// Equivalent to the SO_DOMAIN socket option. + address-family: func() -> ip-address-family; + + /// Hints the desired listen queue size. Implementations are free to ignore this. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// + /// # Typical errors + /// - `not-supported`: (set) The platform does not support changing the backlog size after the initial listen. + /// - `invalid-argument`: (set) The provided value was 0. + /// - `invalid-state`: (set) The socket is in the `connect-in-progress` or `connected` state. + set-listen-backlog-size: func(value: u64) -> result<_, error-code>; + + /// Enables or disables keepalive. + /// + /// The keepalive behavior can be adjusted using: + /// - `keep-alive-idle-time` + /// - `keep-alive-interval` + /// - `keep-alive-count` + /// These properties can be configured while `keep-alive-enabled` is false, but only come into effect when `keep-alive-enabled` is true. + /// + /// Equivalent to the SO_KEEPALIVE socket option. + keep-alive-enabled: func() -> result; + set-keep-alive-enabled: func(value: bool) -> result<_, error-code>; + + /// Amount of time the connection has to be idle before TCP starts sending keepalive packets. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPIDLE socket option. (TCP_KEEPALIVE on MacOS) + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-idle-time: func() -> result; + set-keep-alive-idle-time: func(value: duration) -> result<_, error-code>; + + /// The time between keepalive packets. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPINTVL socket option. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-interval: func() -> result; + set-keep-alive-interval: func(value: duration) -> result<_, error-code>; + + /// The maximum amount of keepalive packets TCP should send before aborting the connection. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPCNT socket option. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-count: func() -> result; + set-keep-alive-count: func(value: u32) -> result<_, error-code>; + + /// Equivalent to the IP_TTL & IPV6_UNICAST_HOPS socket options. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The TTL value must be 1 or higher. + hop-limit: func() -> result; + set-hop-limit: func(value: u8) -> result<_, error-code>; + + /// The kernel buffer space reserved for sends/receives on this socket. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the SO_RCVBUF and SO_SNDBUF socket options. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + receive-buffer-size: func() -> result; + set-receive-buffer-size: func(value: u64) -> result<_, error-code>; + send-buffer-size: func() -> result; + set-send-buffer-size: func(value: u64) -> result<_, error-code>; + + /// Create a `pollable` which can be used to poll for, or block on, + /// completion of any of the asynchronous operations of this socket. + /// + /// When `finish-bind`, `finish-listen`, `finish-connect` or `accept` + /// return `error(would-block)`, this pollable can be used to wait for + /// their success or failure, after which the method can be retried. + /// + /// The pollable is not limited to the async operation that happens to be + /// in progress at the time of calling `subscribe` (if any). Theoretically, + /// `subscribe` only has to be called once per socket and can then be + /// (re)used for the remainder of the socket's lifetime. + /// + /// See + /// for a more information. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + + /// Initiate a graceful shutdown. + /// + /// - `receive`: The socket is not expecting to receive any data from + /// the peer. The `input-stream` associated with this socket will be + /// closed. Any data still in the receive queue at time of calling + /// this method will be discarded. + /// - `send`: The socket has no more data to send to the peer. The `output-stream` + /// associated with this socket will be closed and a FIN packet will be sent. + /// - `both`: Same effect as `receive` & `send` combined. + /// + /// This function is idempotent. Shutting a down a direction more than once + /// has no effect and returns `ok`. + /// + /// The shutdown function does not close (drop) the socket. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not in the `connected` state. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + shutdown: func(shutdown-type: shutdown-type) -> result<_, error-code>; + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/udp-create-socket.wit b/examples/go/http-outgoing-client/wit/deps/sockets/udp-create-socket.wit new file mode 100644 index 000000000..0482d1fe7 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/udp-create-socket.wit @@ -0,0 +1,27 @@ + +interface udp-create-socket { + use network.{network, error-code, ip-address-family}; + use udp.{udp-socket}; + + /// Create a new UDP socket. + /// + /// Similar to `socket(AF_INET or AF_INET6, SOCK_DGRAM, IPPROTO_UDP)` in POSIX. + /// On IPv6 sockets, IPV6_V6ONLY is enabled by default and can't be configured otherwise. + /// + /// This function does not require a network capability handle. This is considered to be safe because + /// at time of creation, the socket is not bound to any `network` yet. Up to the moment `bind` is called, + /// the socket is effectively an in-memory configuration object, unable to communicate with the outside world. + /// + /// All sockets are non-blocking. Use the wasi-poll interface to block on asynchronous operations. + /// + /// # Typical errors + /// - `not-supported`: The specified `address-family` is not supported. (EAFNOSUPPORT) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References: + /// - + /// - + /// - + /// - + create-udp-socket: func(address-family: ip-address-family) -> result; +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/udp.wit b/examples/go/http-outgoing-client/wit/deps/sockets/udp.wit new file mode 100644 index 000000000..d987a0a90 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/udp.wit @@ -0,0 +1,266 @@ + +interface udp { + use wasi:io/poll@0.2.0.{pollable}; + use network.{network, error-code, ip-socket-address, ip-address-family}; + + /// A received datagram. + record incoming-datagram { + /// The payload. + /// + /// Theoretical max size: ~64 KiB. In practice, typically less than 1500 bytes. + data: list, + + /// The source address. + /// + /// This field is guaranteed to match the remote address the stream was initialized with, if any. + /// + /// Equivalent to the `src_addr` out parameter of `recvfrom`. + remote-address: ip-socket-address, + } + + /// A datagram to be sent out. + record outgoing-datagram { + /// The payload. + data: list, + + /// The destination address. + /// + /// The requirements on this field depend on how the stream was initialized: + /// - with a remote address: this field must be None or match the stream's remote address exactly. + /// - without a remote address: this field is required. + /// + /// If this value is None, the send operation is equivalent to `send` in POSIX. Otherwise it is equivalent to `sendto`. + remote-address: option, + } + + + + /// A UDP socket handle. + resource udp-socket { + /// Bind the socket to a specific network on the provided IP address and port. + /// + /// If the IP address is zero (`0.0.0.0` in IPv4, `::` in IPv6), it is left to the implementation to decide which + /// network interface(s) to bind to. + /// If the port is zero, the socket will be bound to a random free port. + /// + /// # Typical errors + /// - `invalid-argument`: The `local-address` has the wrong address family. (EAFNOSUPPORT, EFAULT on Windows) + /// - `invalid-state`: The socket is already bound. (EINVAL) + /// - `address-in-use`: No ephemeral ports available. (EADDRINUSE, ENOBUFS on Windows) + /// - `address-in-use`: Address is already in use. (EADDRINUSE) + /// - `address-not-bindable`: `local-address` is not an address that the `network` can bind to. (EADDRNOTAVAIL) + /// - `not-in-progress`: A `bind` operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// Unlike in POSIX, in WASI the bind operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `bind` as part of either `start-bind` or `finish-bind`. + /// + /// # References + /// - + /// - + /// - + /// - + start-bind: func(network: borrow, local-address: ip-socket-address) -> result<_, error-code>; + finish-bind: func() -> result<_, error-code>; + + /// Set up inbound & outbound communication channels, optionally to a specific peer. + /// + /// This function only changes the local socket configuration and does not generate any network traffic. + /// On success, the `remote-address` of the socket is updated. The `local-address` may be updated as well, + /// based on the best network path to `remote-address`. + /// + /// When a `remote-address` is provided, the returned streams are limited to communicating with that specific peer: + /// - `send` can only be used to send to this destination. + /// - `receive` will only return datagrams sent from the provided `remote-address`. + /// + /// This method may be called multiple times on the same socket to change its association, but + /// only the most recently returned pair of streams will be operational. Implementations may trap if + /// the streams returned by a previous invocation haven't been dropped yet before calling `stream` again. + /// + /// The POSIX equivalent in pseudo-code is: + /// ```text + /// if (was previously connected) { + /// connect(s, AF_UNSPEC) + /// } + /// if (remote_address is Some) { + /// connect(s, remote_address) + /// } + /// ``` + /// + /// Unlike in POSIX, the socket must already be explicitly bound. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-state`: The socket is not bound. + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE, EADDRNOTAVAIL on Linux, EAGAIN on BSD) + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// + /// # References + /// - + /// - + /// - + /// - + %stream: func(remote-address: option) -> result, error-code>; + + /// Get the current bound address. + /// + /// POSIX mentions: + /// > If the socket has not been bound to a local name, the value + /// > stored in the object pointed to by `address` is unspecified. + /// + /// WASI is stricter and requires `local-address` to return `invalid-state` when the socket hasn't been bound yet. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. + /// + /// # References + /// - + /// - + /// - + /// - + local-address: func() -> result; + + /// Get the address the socket is currently streaming to. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not streaming to a specific remote address. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + remote-address: func() -> result; + + /// Whether this is a IPv4 or IPv6 socket. + /// + /// Equivalent to the SO_DOMAIN socket option. + address-family: func() -> ip-address-family; + + /// Equivalent to the IP_TTL & IPV6_UNICAST_HOPS socket options. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The TTL value must be 1 or higher. + unicast-hop-limit: func() -> result; + set-unicast-hop-limit: func(value: u8) -> result<_, error-code>; + + /// The kernel buffer space reserved for sends/receives on this socket. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the SO_RCVBUF and SO_SNDBUF socket options. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + receive-buffer-size: func() -> result; + set-receive-buffer-size: func(value: u64) -> result<_, error-code>; + send-buffer-size: func() -> result; + set-send-buffer-size: func(value: u64) -> result<_, error-code>; + + /// Create a `pollable` which will resolve once the socket is ready for I/O. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } + + resource incoming-datagram-stream { + /// Receive messages on the socket. + /// + /// This function attempts to receive up to `max-results` datagrams on the socket without blocking. + /// The returned list may contain fewer elements than requested, but never more. + /// + /// This function returns successfully with an empty list when either: + /// - `max-results` is 0, or: + /// - `max-results` is greater than 0, but no results are immediately available. + /// This function never returns `error(would-block)`. + /// + /// # Typical errors + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET on Windows, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// + /// # References + /// - + /// - + /// - + /// - + /// - + /// - + /// - + /// - + receive: func(max-results: u64) -> result, error-code>; + + /// Create a `pollable` which will resolve once the stream is ready to receive again. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } + + resource outgoing-datagram-stream { + /// Check readiness for sending. This function never blocks. + /// + /// Returns the number of datagrams permitted for the next call to `send`, + /// or an error. Calling `send` with more datagrams than this function has + /// permitted will trap. + /// + /// When this function returns ok(0), the `subscribe` pollable will + /// become ready when this function will report at least ok(1), or an + /// error. + /// + /// Never returns `would-block`. + check-send: func() -> result; + + /// Send messages on the socket. + /// + /// This function attempts to send all provided `datagrams` on the socket without blocking and + /// returns how many messages were actually sent (or queued for sending). This function never + /// returns `error(would-block)`. If none of the datagrams were able to be sent, `ok(0)` is returned. + /// + /// This function semantically behaves the same as iterating the `datagrams` list and sequentially + /// sending each individual datagram until either the end of the list has been reached or the first error occurred. + /// If at least one datagram has been sent successfully, this function never returns an error. + /// + /// If the input list is empty, the function returns `ok(0)`. + /// + /// Each call to `send` must be permitted by a preceding `check-send`. Implementations must trap if + /// either `check-send` was not called or `datagrams` contains more items than `check-send` permitted. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The socket is in "connected" mode and `remote-address` is `some` value that does not match the address passed to `stream`. (EISCONN) + /// - `invalid-argument`: The socket is not "connected" and no value for `remote-address` was provided. (EDESTADDRREQ) + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET on Windows, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// - `datagram-too-large`: The datagram is too large. (EMSGSIZE) + /// + /// # References + /// - + /// - + /// - + /// - + /// - + /// - + /// - + /// - + send: func(datagrams: list) -> result; + + /// Create a `pollable` which will resolve once the stream is ready to send again. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } +} diff --git a/examples/go/http-outgoing-client/wit/deps/sockets/world.wit b/examples/go/http-outgoing-client/wit/deps/sockets/world.wit new file mode 100644 index 000000000..f8bb92ae0 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/sockets/world.wit @@ -0,0 +1,11 @@ +package wasi:sockets@0.2.0; + +world imports { + import instance-network; + import network; + import udp; + import udp-create-socket; + import tcp; + import tcp-create-socket; + import ip-name-lookup; +} diff --git a/examples/go/http-outgoing-client/wit/deps/wrpc-http/http.wit b/examples/go/http-outgoing-client/wit/deps/wrpc-http/http.wit new file mode 100644 index 000000000..0ecd85a26 --- /dev/null +++ b/examples/go/http-outgoing-client/wit/deps/wrpc-http/http.wit @@ -0,0 +1,53 @@ +// This is based on `wasi:http@0.2.0` +package wrpc:http@0.1.0; + +interface types { + use wasi:http/types@0.2.0.{ + error-code as wasi-error-code, + method as wasi-method, + request-options as wasi-request-options, + scheme as wasi-scheme, + }; + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + + type error-code = wasi-error-code; + type method = wasi-method; + type scheme = wasi-scheme; + + type fields = list>>>; + + record request-options { + connect-timeout: option, + first-byte-timeout: option, + between-bytes-timeout: option, + } + + record request { + body: stream, + trailers: future>, + method: method, + path-with-query: option, + scheme: option, + authority: option, + headers: fields, + } + + record response { + body: stream, + trailers: future>, + status: u16, + headers: fields, + } +} + +interface incoming-handler { + use types.{request, response, error-code}; + + handle: func(request: request) -> result; +} + +interface outgoing-handler { + use types.{request, response, error-code, request-options}; + + handle: func(request: request, options: option) -> result; +} diff --git a/examples/go/http-outgoing-client/wit/world.wit b/examples/go/http-outgoing-client/wit/world.wit new file mode 100644 index 000000000..5a1b12b2b --- /dev/null +++ b/examples/go/http-outgoing-client/wit/world.wit @@ -0,0 +1,5 @@ +package wrpc-examples:http-outgoing-server; + +world client { + import wrpc:http/outgoing-handler@0.1.0; +} diff --git a/examples/go/http-outgoing-server/bindings/exports/wrpc/http/outgoing_handler/bindings.wrpc.go b/examples/go/http-outgoing-server/bindings/exports/wrpc/http/outgoing_handler/bindings.wrpc.go new file mode 100644 index 000000000..b521aac56 --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/exports/wrpc/http/outgoing_handler/bindings.wrpc.go @@ -0,0 +1,152 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package outgoing_handler + +import ( + bytes "bytes" + context "context" + errors "errors" + fmt "fmt" + wrpc__http__types "github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings/wrpc/http/types" + wrpc "github.com/wrpc/wrpc/go" + errgroup "golang.org/x/sync/errgroup" + slog "log/slog" +) + +type Request = wrpc__http__types.Request +type Response = wrpc__http__types.Response +type ErrorCode = wrpc__http__types.ErrorCode +type RequestOptions = wrpc__http__types.RequestOptions +type Handler interface { + Handle(ctx__ context.Context, request *wrpc__http__types.Request, options *RequestOptions) (*wrpc.Result[Response, ErrorCode], error) +} + +func ServeInterface(c wrpc.Client, h Handler) (stop func() error, err error) { + stops := make([]func() error, 0, 1) + stop = func() error { + for _, stop := range stops { + if err := stop(); err != nil { + return err + } + } + return nil + } + stop0, err := c.Serve("wrpc:http/outgoing-handler@0.1.0", "handle", func(ctx context.Context, w wrpc.IndexWriter, r wrpc.IndexReadCloser) error { + slog.DebugContext(ctx, "reading parameter", "i", 0) + p0, err := wrpc__http__types.ReadRequest(r, []uint32{0}...) + if err != nil { + return fmt.Errorf("failed to read parameter 0: %w", err) + } + slog.DebugContext(ctx, "reading parameter", "i", 1) + p1, err := func(r wrpc.IndexReader) (*RequestOptions, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := wrpc__http__types.ReadRequestOptions(r, append([]uint32{1}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `option::some` value: %w", err) + } + return v, nil + default: + return nil, fmt.Errorf("invalid option status byte %d", status) + } + }(r) + if err != nil { + return fmt.Errorf("failed to read parameter 1: %w", err) + } + slog.DebugContext(ctx, "calling `wrpc:http/outgoing-handler@0.1.0.handle` handler") + r0, err := h.Handle(ctx, p0, p1) + if err != nil { + return fmt.Errorf("failed to handle `wrpc:http/outgoing-handler@0.1.0.handle` invocation: %w", err) + } + + var buf bytes.Buffer + writes := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0, err := func(v *wrpc.Result[Response, ErrorCode], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + switch { + case v.Ok == nil && v.Err == nil: + return nil, errors.New("both result variants cannot be nil") + case v.Ok != nil && v.Err != nil: + return nil, errors.New("exactly one result variant must non-nil") + + case v.Ok != nil: + slog.Debug("writing `result::ok` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `result::ok` status byte: %w", err) + } + slog.Debug("writing `result::ok` payload") + write, err := (*v.Ok).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `result::ok` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + default: + slog.Debug("writing `result::err` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `result::err` status byte: %w", err) + } + slog.Debug("writing `result::err` payload") + write, err := (*v.Err).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `result::err` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + } + }(r0, &buf) + if err != nil { + return fmt.Errorf("failed to write result value 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.DebugContext(ctx, "transmitting `wrpc:http/outgoing-handler@0.1.0.handle` result") + _, err = w.Write(buf.Bytes()) + if err != nil { + return fmt.Errorf("failed to write result: %w", err) + } + if len(writes) > 0 { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + } + return nil + }, wrpc.NewSubscribePath().Index(0).Index(0), wrpc.NewSubscribePath().Index(0).Index(1)) + if err != nil { + return nil, fmt.Errorf("failed to serve `wrpc:http/outgoing-handler@0.1.0.handle`: %w", err) + } + stops = append(stops, stop0) + return stop, nil +} diff --git a/examples/go/http-outgoing-server/bindings/server.wrpc.go b/examples/go/http-outgoing-server/bindings/server.wrpc.go new file mode 100644 index 000000000..d9b321d13 --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/server.wrpc.go @@ -0,0 +1,34 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +// server package contains wRPC bindings for `server` world +package server + +import ( + exports__wrpc__http__outgoing_handler "github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings/exports/wrpc/http/outgoing_handler" + wrpc "github.com/wrpc/wrpc/go" +) + +func Serve(c wrpc.Client, h interface { + exports__wrpc__http__outgoing_handler.Handler +}) (stop func() error, err error) { + stops := make([]func() error, 0, 1) + stop = func() error { + for _, stop := range stops { + if err := stop(); err != nil { + return err + } + } + return nil + } + stop0, err := exports__wrpc__http__outgoing_handler.ServeInterface(c, h) + if err != nil { + return + } + stops = append(stops, stop0) + stop = func() error { + if err := stop0(); err != nil { + return err + } + return nil + } + return +} diff --git a/examples/go/http-outgoing-server/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go b/examples/go/http-outgoing-server/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go new file mode 100644 index 000000000..87b9c461d --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/wasi/clocks/monotonic_clock/bindings.wrpc.go @@ -0,0 +1,179 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package monotonic_clock + +import ( + bytes "bytes" + context "context" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wasi__io__poll "github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings/wasi/io/poll" + wrpc "github.com/wrpc/wrpc/go" + io "io" + slog "log/slog" +) + +type Pollable = wasi__io__poll.Pollable + +// An instant in time, in nanoseconds. An instant is relative to an +// unspecified initial value, and can only be compared to instances from +// the same monotonic-clock. +type Instant = uint64 + +// A duration of time, in nanoseconds. +type Duration = uint64 + +// Read the current value of the clock. +// +// The clock is monotonic, therefore calling this function repeatedly will +// produce a sequence of non-decreasing values. +func Now(ctx__ context.Context, wrpc__ wrpc.Client) (r0__ uint64, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:clocks/monotonic-clock@0.2.0", "now", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + _, err__ = w__.Write(nil) + if err__ != nil { + return fmt.Errorf("failed to write empty parameters: %w", err__) + } + r0__, err__ = func(r io.ByteReader) (uint64, error) { + var x uint64 + var s uint + for i := 0; i < 10; i++ { + slog.Debug("reading u64 byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(9) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadMethod(r wrpc.IndexReader, path ...uint32) (*Method, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(2) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadScheme(r wrpc.IndexReader, path ...uint32) (*Scheme, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Rcode, w) + if err != nil { + return nil, fmt.Errorf("failed to write `rcode` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "info-code") + write1, err := func(v *uint16, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint16, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen16); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u16"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.InfoCode, w) + if err != nil { + return nil, fmt.Errorf("failed to write `info-code` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadDnsErrorPayload(r wrpc.IndexReader, path ...uint32) (*DnsErrorPayload, error) { + v := &DnsErrorPayload{} + var err error + slog.Debug("reading field", "name", "rcode") + v.Rcode, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u16 byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("varint overflows a 16-bit integer") + } + return x | uint16(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.AlertMessage, w) + if err != nil { + return nil, fmt.Errorf("failed to write `alert-message` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadTlsAlertReceivedPayload(r wrpc.IndexReader, path ...uint32) (*TlsAlertReceivedPayload, error) { + v := &TlsAlertReceivedPayload{} + var err error + slog.Debug("reading field", "name", "alert-id") + v.AlertId, err = func(r wrpc.IndexReader) (*uint8, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r io.ByteReader) (uint8, error) { + slog.Debug("reading u8 byte") + v, err := r.ReadByte() + if err != nil { + return 0, fmt.Errorf("failed to read u8 byte: %w", err) + } + return v, nil + }(r) + if err != nil { + return nil, fmt.Errorf("failed to read `option::some` value: %w", err) + } + return &v, nil + default: + return nil, fmt.Errorf("invalid option status byte %d", status) + } + }(r) + if err != nil { + return nil, fmt.Errorf("failed to read `alert-id` field: %w", err) + } + slog.Debug("reading field", "name", "alert-message") + v.AlertMessage, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FieldName, w) + if err != nil { + return nil, fmt.Errorf("failed to write `field-name` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "field-size") + write1, err := func(v *uint32, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint32, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen32); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u32"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FieldSize, w) + if err != nil { + return nil, fmt.Errorf("failed to write `field-size` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadFieldSizePayload(r wrpc.IndexReader, path ...uint32) (*FieldSizePayload, error) { + v := &FieldSizePayload{} + var err error + slog.Debug("reading field", "name", "field-name") + v.FieldName, err = func(r wrpc.IndexReader) (*string, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r interface { + io.ByteReader + io.Reader + }) (string, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading string length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(31) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + case ErrorCodeDiscriminant_HttpResponseContentCoding: + payload, ok := v.payload.(*string) + if !ok { + return nil, errors.New("invalid payload") + } + write, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(32) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + case ErrorCodeDiscriminant_HttpResponseTimeout: + case ErrorCodeDiscriminant_HttpUpgradeFailed: + case ErrorCodeDiscriminant_HttpProtocolError: + case ErrorCodeDiscriminant_LoopDetected: + case ErrorCodeDiscriminant_ConfigurationError: + case ErrorCodeDiscriminant_InternalError: + payload, ok := v.payload.(*string) + if !ok { + return nil, errors.New("invalid payload") + } + write, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(payload, w) + if err != nil { + return nil, fmt.Errorf("failed to write payload: %w", err) + } + + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(38) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + default: + return nil, errors.New("invalid variant") + } + return nil, nil +} +func ReadErrorCode(r wrpc.IndexReader, path ...uint32) (*ErrorCode, error) { + disc, err := func(r io.ByteReader) (uint8, error) { + var x uint8 + var s uint + for i := 0; i < 2; i++ { + slog.Debug("reading u8 discriminant byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)< math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, []uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(entries, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `entries` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) (*wrpc.Result[Fields, HeaderError], error) { + slog.Debug("reading result status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read result status byte: %w", err) + } + switch status { + case 0: + slog.Debug("reading `result::ok` payload") + v, err := (Fields)(nil), errors.New("reading owned handles not supported yet") + if err != nil { + return nil, fmt.Errorf("failed to read `result::ok` value: %w", err) + } + return &wrpc.Result[Fields, HeaderError]{Ok: &v}, nil + case 1: + slog.Debug("reading `result::err` payload") + v, err := ReadHeaderError(r, append([]uint32{0}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::err` value: %w", err) + } + return &wrpc.Result[Fields, HeaderError]{Err: v}, nil + default: + return nil, fmt.Errorf("invalid result status byte %d", status) + } + }(r__) + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]fields.from-list`: %w", err__) + return + } + return +} + +// Construct a new `outgoing-request` with a default `method` of `GET`, and +// `none` values for `path-with-query`, `scheme`, and `authority`. +// +// * `headers` is the HTTP Headers for the Request. +// +// It is possible to construct, or manipulate with the accessor functions +// below, an `outgoing-request` with an invalid combination of `scheme` +// and `authority`, or `headers` which are not permitted to be sent. +// It is the obligation of the `outgoing-handler.handle` implementation +// to reject invalid constructions of `outgoing-request`. +func NewOutgoingRequest(ctx__ context.Context, wrpc__ wrpc.Client, headers Headers) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]outgoing-request", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(headers) + if err__ != nil { + return fmt.Errorf("failed to write `headers` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (OutgoingRequest)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]outgoing-request`: %w", err__) + return + } + return +} + +// Construct a default `request-options` value. +func NewRequestOptions(ctx__ context.Context, wrpc__ wrpc.Client) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]request-options", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + _, err__ = w__.Write(nil) + if err__ != nil { + return fmt.Errorf("failed to write empty parameters: %w", err__) + } + r0__, err__ = (RequestOptions)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]request-options`: %w", err__) + return + } + return +} + +// Set the value of the `response-outparam` to either send a response, +// or indicate an error. +// +// This method consumes the `response-outparam` to ensure that it is +// called at most once. If it is never called, the implementation +// will respond with an error. +// +// The user may provide an `error` to `response` to allow the +// implementation determine how to respond with an HTTP error response. +func ResponseOutparam_Set(ctx__ context.Context, wrpc__ wrpc.Client, param ResponseOutparam, response *wrpc.Result[OutgoingResponse, ErrorCode]) (close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]response-outparam.set", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 2) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(param) + if err__ != nil { + return fmt.Errorf("failed to write `param` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + write1__, err__ := func(v *wrpc.Result[OutgoingResponse, ErrorCode], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + switch { + case v.Ok == nil && v.Err == nil: + return nil, errors.New("both result variants cannot be nil") + case v.Ok != nil && v.Err != nil: + return nil, errors.New("exactly one result variant must non-nil") + + case v.Ok != nil: + slog.Debug("writing `result::ok` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `result::ok` status byte: %w", err) + } + slog.Debug("writing `result::ok` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(*v.Ok) + if err != nil { + return nil, fmt.Errorf("failed to write `result::ok` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + default: + slog.Debug("writing `result::err` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `result::err` status byte: %w", err) + } + slog.Debug("writing `result::err` payload") + write, err := (*v.Err).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `result::err` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + } + }(response, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `response` parameter: %w", err__) + } + if write1__ != nil { + writes__[1] = write1__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]response-outparam.set`: %w", err__) + return + } + return +} + +// Takes ownership of `incoming-body`, and returns a `future-trailers`. +// This function will trap if the `input-stream` child is still alive. +func IncomingBody_Finish(ctx__ context.Context, wrpc__ wrpc.Client, this IncomingBody) (r0__ FutureTrailers, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]incoming-body.finish", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(this) + if err__ != nil { + return fmt.Errorf("failed to write `this` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (FutureTrailers)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]incoming-body.finish`: %w", err__) + return + } + return +} + +// Construct an `outgoing-response`, with a default `status-code` of `200`. +// If a different `status-code` is needed, it must be set via the +// `set-status-code` method. +// +// * `headers` is the HTTP Headers for the Response. +func NewOutgoingResponse(ctx__ context.Context, wrpc__ wrpc.Client, headers Headers) (r0__ any, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[constructor]outgoing-response", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(headers) + if err__ != nil { + return fmt.Errorf("failed to write `headers` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = (OutgoingResponse)(nil), errors.New("reading owned handles not supported yet") + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[constructor]outgoing-response`: %w", err__) + return + } + return +} + +// Finalize an outgoing body, optionally providing trailers. This must be +// called to signal that the response is complete. If the `outgoing-body` +// is dropped without calling `outgoing-body.finalize`, the implementation +// should treat the body as corrupted. +// +// Fails if the body's `outgoing-request` or `outgoing-response` was +// constructed with a Content-Length header, and the contents written +// to the body (via `write`) does not match the value given in the +// Content-Length. +func OutgoingBody_Finish(ctx__ context.Context, wrpc__ wrpc.Client, this OutgoingBody, trailers *Trailers) (r0__ *wrpc.Result[struct{}, ErrorCode], close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:http/types@0.2.0", "[static]outgoing-body.finish", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 2) + write0__, err__ := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(this) + if err__ != nil { + return fmt.Errorf("failed to write `this` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + write1__, err__ := func(v *Trailers, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing owned handles not supported yet") }(*v) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(trailers, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `trailers` parameter: %w", err__) + } + if write1__ != nil { + writes__[1] = write1__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) (*wrpc.Result[struct{}, ErrorCode], error) { + slog.Debug("reading result status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read result status byte: %w", err) + } + switch status { + case 0: + var v struct{} + return &wrpc.Result[struct{}, ErrorCode]{Ok: &v}, nil + case 1: + slog.Debug("reading `result::err` payload") + v, err := ReadErrorCode(r, append([]uint32{0}, 1)...) + if err != nil { + return nil, fmt.Errorf("failed to read `result::err` value: %w", err) + } + return &wrpc.Result[struct{}, ErrorCode]{Err: v}, nil + default: + return nil, fmt.Errorf("invalid result status byte %d", status) + } + }(r__) + if err__ != nil { + return fmt.Errorf("failed to read result 0: %w", err__) + } + return nil + }); err__ != nil { + err__ = fmt.Errorf("failed to invoke `[static]outgoing-body.finish`: %w", err__) + return + } + return +} + +type Fields interface { + // Get all of the values corresponding to a key. If the key is not present + // in this `fields`, an empty list is returned. However, if the key is + // present but empty, this is represented by a list with one or more + // empty field-values present. + Get(ctx__ context.Context, wrpc__ wrpc.Client, name string) ([][]uint8, func() error, error) + // Returns `true` when the key is present in this `fields`. If the key is + // syntactically invalid, `false` is returned. + Has(ctx__ context.Context, wrpc__ wrpc.Client, name string) (bool, func() error, error) + // Set all of the values for a key. Clears any existing values for that + // key, if they have been set. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Set(ctx__ context.Context, wrpc__ wrpc.Client, name string, value [][]uint8) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Delete all values for a key. Does nothing if no values for the key + // exist. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Delete(ctx__ context.Context, wrpc__ wrpc.Client, name string) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Append a value for a key. Does not change or delete any existing + // values for that key. + // + // Fails with `header-error.immutable` if the `fields` are immutable. + Append(ctx__ context.Context, wrpc__ wrpc.Client, name string, value []uint8) (*wrpc.Result[struct{}, HeaderError], func() error, error) + // Retrieve the full set of keys and values in the Fields. Like the + // constructor, the list represents each key-value pair. + // + // The outer list represents each key-value pair in the Fields. Keys + // which have multiple values are represented by multiple entries in this + // list with the same key. + Entries(ctx__ context.Context, wrpc__ wrpc.Client) ([]*wrpc.Tuple2[string, []uint8], func() error, error) + // Make a deep copy of the Fields. Equivelant in behavior to calling the + // `fields` constructor on the return value of `entries`. The resulting + // `fields` is mutable. + Clone(ctx__ context.Context, wrpc__ wrpc.Client) (Fields, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingRequest interface { + // Returns the method of the incoming request. + Method(ctx__ context.Context, wrpc__ wrpc.Client) (*Method, func() error, error) + // Returns the path with query parameters from the request, as a string. + PathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Returns the protocol scheme from the request. + Scheme(ctx__ context.Context, wrpc__ wrpc.Client) (*Scheme, func() error, error) + // Returns the authority from the request, if it was present. + Authority(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Get the `headers` associated with the request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // The `headers` returned are a child resource: it must be dropped before + // the parent `incoming-request` is dropped. Dropping this + // `incoming-request` before all children are dropped will trap. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Gives the `incoming-body` associated with this request. Will only + // return success at most once, and subsequent calls will return error. + Consume(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[IncomingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingRequest interface { + // Returns the resource corresponding to the outgoing Body for this + // Request. + // + // Returns success on the first call: the `outgoing-body` resource for + // this `outgoing-request` can be retrieved at most once. Subsequent + // calls will return error. + Body(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutgoingBody, struct{}], func() error, error) + // Get the Method for the Request. + Method(ctx__ context.Context, wrpc__ wrpc.Client) (*Method, func() error, error) + // Set the Method for the Request. Fails if the string present in a + // `method.other` argument is not a syntactically valid method. + SetMethod(ctx__ context.Context, wrpc__ wrpc.Client, method *Method) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the combination of the HTTP Path and Query for the Request. + // When `none`, this represents an empty Path and empty Query. + PathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Set the combination of the HTTP Path and Query for the Request. + // When `none`, this represents an empty Path and empty Query. Fails is the + // string given is not a syntactically valid path and query uri component. + SetPathWithQuery(ctx__ context.Context, wrpc__ wrpc.Client, pathWithQuery *string) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the HTTP Related Scheme for the Request. When `none`, the + // implementation may choose an appropriate default scheme. + Scheme(ctx__ context.Context, wrpc__ wrpc.Client) (*Scheme, func() error, error) + // Set the HTTP Related Scheme for the Request. When `none`, the + // implementation may choose an appropriate default scheme. Fails if the + // string given is not a syntactically valid uri scheme. + SetScheme(ctx__ context.Context, wrpc__ wrpc.Client, scheme *Scheme) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the HTTP Authority for the Request. A value of `none` may be used + // with Related Schemes which do not require an Authority. The HTTP and + // HTTPS schemes always require an authority. + Authority(ctx__ context.Context, wrpc__ wrpc.Client) (*string, func() error, error) + // Set the HTTP Authority for the Request. A value of `none` may be used + // with Related Schemes which do not require an Authority. The HTTP and + // HTTPS schemes always require an authority. Fails if the string given is + // not a syntactically valid uri authority. + SetAuthority(ctx__ context.Context, wrpc__ wrpc.Client, authority *string) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the headers associated with the Request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `outgoing-request` is dropped, or its ownership is transfered to + // another component by e.g. `outgoing-handler.handle`. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type RequestOptions interface { + // The timeout for the initial connect to the HTTP Server. + ConnectTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for the initial connect to the HTTP Server. An error + // return value indicates that this timeout is not supported. + SetConnectTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + // The timeout for receiving the first byte of the Response body. + FirstByteTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for receiving the first byte of the Response body. An + // error return value indicates that this timeout is not supported. + SetFirstByteTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + // The timeout for receiving subsequent chunks of bytes in the Response + // body stream. + BetweenBytesTimeout(ctx__ context.Context, wrpc__ wrpc.Client) (*Duration, func() error, error) + // Set the timeout for receiving subsequent chunks of bytes in the Response + // body stream. An error return value indicates that this timeout is not + // supported. + SetBetweenBytesTimeout(ctx__ context.Context, wrpc__ wrpc.Client, duration *Duration) (*wrpc.Result[struct{}, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type ResponseOutparam interface { + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingResponse interface { + // Returns the status code from the incoming response. + Status(ctx__ context.Context, wrpc__ wrpc.Client) (uint16, func() error, error) + // Returns the headers from the incoming response. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `incoming-response` is dropped. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Returns the incoming body. May be called at most once. Returns error + // if called additional times. + Consume(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[IncomingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type IncomingBody interface { + // Returns the contents of the body, as a stream of bytes. + // + // Returns success on first call: the stream representing the contents + // can be retrieved at most once. Subsequent calls will return error. + // + // The returned `input-stream` resource is a child: it must be dropped + // before the parent `incoming-body` is dropped, or consumed by + // `incoming-body.finish`. + // + // This invariant ensures that the implementation can determine whether + // the user is consuming the contents of the body, waiting on the + // `future-trailers` to be ready, or neither. This allows for network + // backpressure is to be applied when the user is consuming the body, + // and for that backpressure to not inhibit delivery of the trailers if + // the user does not read the entire body. + Stream(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[InputStream, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type FutureTrailers interface { + // Returns a pollable which becomes ready when either the trailers have + // been received, or an error has occured. When this pollable is ready, + // the `get` method will return `some`. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Returns the contents of the trailers, or an error which occured, + // once the future is ready. + // + // The outer `option` represents future readiness. Users can wait on this + // `option` to become `some` using the `subscribe` method. + // + // The outer `result` is used to retrieve the trailers or error at most + // once. It will be success on the first call in which the outer option + // is `some`, and error on subsequent calls. + // + // The inner `result` represents that either the HTTP Request or Response + // body, as well as any trailers, were received successfully, or that an + // error occured receiving them. The optional `trailers` indicates whether + // or not trailers were present in the body. + // + // When some `trailers` are returned by this method, the `trailers` + // resource is immutable, and a child. Use of the `set`, `append`, or + // `delete` methods will return an error, and the resource must be + // dropped before the parent `future-trailers` is dropped. + Get(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[wrpc.Result[*Trailers, ErrorCode], struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingResponse interface { + // Get the HTTP Status Code for the Response. + StatusCode(ctx__ context.Context, wrpc__ wrpc.Client) (uint16, func() error, error) + // Set the HTTP Status Code for the Response. Fails if the status-code + // given is not a valid http status code. + SetStatusCode(ctx__ context.Context, wrpc__ wrpc.Client, statusCode uint16) (*wrpc.Result[struct{}, struct{}], func() error, error) + // Get the headers associated with the Request. + // + // The returned `headers` resource is immutable: `set`, `append`, and + // `delete` operations will fail with `header-error.immutable`. + // + // This headers resource is a child: it must be dropped before the parent + // `outgoing-request` is dropped, or its ownership is transfered to + // another component by e.g. `outgoing-handler.handle`. + Headers(ctx__ context.Context, wrpc__ wrpc.Client) (Headers, func() error, error) + // Returns the resource corresponding to the outgoing Body for this Response. + // + // Returns success on the first call: the `outgoing-body` resource for + // this `outgoing-response` can be retrieved at most once. Subsequent + // calls will return error. + Body(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutgoingBody, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type OutgoingBody interface { + // Returns a stream for writing the body contents. + // + // The returned `output-stream` is a child resource: it must be dropped + // before the parent `outgoing-body` resource is dropped (or finished), + // otherwise the `outgoing-body` drop or `finish` will trap. + // + // Returns success on the first call: the `output-stream` resource for + // this `outgoing-body` may be retrieved at most once. Subsequent calls + // will return error. + Write(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[OutputStream, struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} +type FutureIncomingResponse interface { + // Returns a pollable which becomes ready when either the Response has + // been received, or an error has occured. When this pollable is ready, + // the `get` method will return `some`. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Returns the incoming HTTP Response, or an error, once one is ready. + // + // The outer `option` represents future readiness. Users can wait on this + // `option` to become `some` using the `subscribe` method. + // + // The outer `result` is used to retrieve the response or error at most + // once. It will be success on the first call in which the outer option + // is `some`, and error on subsequent calls. + // + // The inner `result` represents that either the incoming HTTP Response + // status and headers have recieved successfully, or that an error + // occured. Errors may also occur while consuming the response body, + // but those will be reported by the `incoming-body` and its + // `output-stream` child. + Get(ctx__ context.Context, wrpc__ wrpc.Client) (*wrpc.Result[wrpc.Result[IncomingResponse, ErrorCode], struct{}], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-server/bindings/wasi/io/error/bindings.wrpc.go b/examples/go/http-outgoing-server/bindings/wasi/io/error/bindings.wrpc.go new file mode 100644 index 000000000..414913b26 --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/wasi/io/error/bindings.wrpc.go @@ -0,0 +1,19 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package error + +import ( + context "context" + wrpc "github.com/wrpc/wrpc/go" +) + +type Error interface { + // Returns a string that is suitable to assist humans in debugging + // this error. + // + // WARNING: The returned string should not be consumed mechanically! + // It may change across platforms, hosts, or other implementation + // details. Parsing this string is a major platform-compatibility + // hazard. + ToDebugString(ctx__ context.Context, wrpc__ wrpc.Client) (string, func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-server/bindings/wasi/io/poll/bindings.wrpc.go b/examples/go/http-outgoing-server/bindings/wasi/io/poll/bindings.wrpc.go new file mode 100644 index 000000000..3f0d885f6 --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/wasi/io/poll/bindings.wrpc.go @@ -0,0 +1,170 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package poll + +import ( + bytes "bytes" + context "context" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wrpc "github.com/wrpc/wrpc/go" + errgroup "golang.org/x/sync/errgroup" + io "io" + slog "log/slog" + math "math" +) + +// Poll for completion on a set of pollables. +// +// This function takes a list of pollables, which identify I/O sources of +// interest, and waits until one or more of the events is ready for I/O. +// +// The result `list` contains one or more indices of handles in the +// argument list that is ready for I/O. +// +// If the list contains more elements than can be indexed with a `u32` +// value, this function traps. +// +// A timeout can be implemented by adding a pollable from the +// wasi-clocks API to the list. +// +// This function does not return a `result`; polling in itself does not +// do any I/O so it doesn't fail. If any of the I/O sources identified by +// the pollables has an error, it is indicated by marking the source as +// being reaedy for I/O. +func Poll(ctx__ context.Context, wrpc__ wrpc.Client, in []Pollable) (r0__ []uint32, close__ func() error, err__ error) { + if err__ = wrpc__.Invoke(ctx__, "wasi:io/poll@0.2.0", "poll", func(w__ wrpc.IndexWriter, r__ wrpc.IndexReadCloser) error { + close__ = r__.Close + var buf__ bytes.Buffer + writes__ := make(map[uint32]func(wrpc.IndexWriter) error, 1) + write0__, err__ := func(v []Pollable, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(any) error { return errors.New("writing borrowed handles not supported yet") }(e) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(in, &buf__) + if err__ != nil { + return fmt.Errorf("failed to write `in` parameter: %w", err__) + } + if write0__ != nil { + writes__[0] = write0__ + } + _, err__ = w__.Write(buf__.Bytes()) + if err__ != nil { + return fmt.Errorf("failed to write parameters: %w", err__) + } + r0__, err__ = func(r wrpc.IndexReader) ([]uint32, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading list length byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u32 byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return x, errors.New("varint overflows a 32-bit integer") + } + return x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u8 discriminant byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("discriminant overflows a 8-bit integer") + } + return x | uint8(b)<0, or an + // error. + // + // If the stream is closed, this pollable is always ready immediately. + // + // The created `pollable` is a child resource of the `output-stream`. + // Implementations may trap if the `output-stream` is dropped before + // all derived `pollable`s created with this function are dropped. + Subscribe(ctx__ context.Context, wrpc__ wrpc.Client) (Pollable, func() error, error) + // Write zeroes to a stream. + // + // This should be used precisely like `write` with the exact same + // preconditions (must use check-write first), but instead of + // passing a list of bytes, you simply pass the number of zero-bytes + // that should be written. + WriteZeroes(ctx__ context.Context, wrpc__ wrpc.Client, len uint64) (*wrpc.Result[struct{}, StreamError], func() error, error) + // Perform a write of up to 4096 zeroes, and then flush the stream. + // Block until all of these operations are complete, or an error + // occurs. + // + // This is a convenience wrapper around the use of `check-write`, + // `subscribe`, `write-zeroes`, and `flush`, and is implemented with + // the following pseudo-code: + // + // ```text + // let pollable = this.subscribe(); + // while num_zeroes != 0 { + // // Wait for the stream to become writable + // pollable.block(); + // let Ok(n) = this.check-write(); // eliding error handling + // let len = min(n, num_zeroes); + // this.write-zeroes(len); // eliding error handling + // num_zeroes -= len; + // } + // this.flush(); + // // Wait for completion of `flush` + // pollable.block(); + // // Check for any errors that arose during `flush` + // let _ = this.check-write(); // eliding error handling + // ``` + BlockingWriteZeroesAndFlush(ctx__ context.Context, wrpc__ wrpc.Client, len uint64) (*wrpc.Result[struct{}, StreamError], func() error, error) + // Read from one stream and write to another. + // + // The behavior of splice is equivelant to: + // 1. calling `check-write` on the `output-stream` + // 2. calling `read` on the `input-stream` with the smaller of the + // `check-write` permitted length and the `len` provided to `splice` + // 3. calling `write` on the `output-stream` with that read data. + // + // Any error reported by the call to `check-write`, `read`, or + // `write` ends the splice and reports that error. + // + // This function returns the number of bytes transferred; it may be less + // than `len`. + Splice(ctx__ context.Context, wrpc__ wrpc.Client, src InputStream, len uint64) (*wrpc.Result[uint64, StreamError], func() error, error) + // Read from one stream and write to another, with blocking. + // + // This is similar to `splice`, except that it blocks until the + // `output-stream` is ready for writing, and the `input-stream` + // is ready for reading, before performing the `splice`. + BlockingSplice(ctx__ context.Context, wrpc__ wrpc.Client, src InputStream, len uint64) (*wrpc.Result[uint64, StreamError], func() error, error) + Drop(ctx__ context.Context, wrpc__ wrpc.Client) error +} diff --git a/examples/go/http-outgoing-server/bindings/wrpc/http/types/bindings.wrpc.go b/examples/go/http-outgoing-server/bindings/wrpc/http/types/bindings.wrpc.go new file mode 100644 index 000000000..a780dd888 --- /dev/null +++ b/examples/go/http-outgoing-server/bindings/wrpc/http/types/bindings.wrpc.go @@ -0,0 +1,3421 @@ +// Generated by `wit-bindgen-wrpc-go` 0.1.0. DO NOT EDIT! +package types + +import ( + bytes "bytes" + binary "encoding/binary" + errors "errors" + fmt "fmt" + wasi__clocks__monotonic_clock "github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings/wasi/clocks/monotonic_clock" + wasi__http__types "github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings/wasi/http/types" + wrpc "github.com/wrpc/wrpc/go" + errgroup "golang.org/x/sync/errgroup" + io "io" + slog "log/slog" + math "math" + utf8 "unicode/utf8" +) + +type WasiErrorCode = wasi__http__types.ErrorCode +type WasiMethod = wasi__http__types.Method +type WasiScheme = wasi__http__types.Scheme +type Duration = wasi__clocks__monotonic_clock.Duration +type ErrorCode = WasiErrorCode +type Method = WasiMethod +type Scheme = WasiScheme +type Fields = []*wrpc.Tuple2[string, [][]uint8] +type RequestOptions struct { + ConnectTimeout *Duration + FirstByteTimeout *Duration + BetweenBytesTimeout *Duration +} + +func (v *RequestOptions) String() string { return "RequestOptions" } + +func (v *RequestOptions) WriteToIndex(w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 3) + slog.Debug("writing field", "name", "connect-timeout") + write0, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.ConnectTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `connect-timeout` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "first-byte-timeout") + write1, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.FirstByteTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `first-byte-timeout` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "between-bytes-timeout") + write2, err := func(v *Duration, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint64, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen64); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u64"); _, err = w.Write(b[:i]); return err }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.BetweenBytesTimeout, w) + if err != nil { + return nil, fmt.Errorf("failed to write `between-bytes-timeout` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadRequestOptions(r wrpc.IndexReader, path ...uint32) (*RequestOptions, error) { + v := &RequestOptions{} + var err error + slog.Debug("reading field", "name", "connect-timeout") + v.ConnectTimeout, err = func(r wrpc.IndexReader) (*Duration, error) { + slog.Debug("reading option status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read option status byte: %w", err) + } + switch status { + case 0: + return nil, nil + case 1: + slog.Debug("reading `option::some` payload") + v, err := func(r io.ByteReader) (uint64, error) { + var x uint64 + var s uint + for i := 0; i < 10; i++ { + slog.Debug("reading u64 byte", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u64 byte: %w", err) + } + if b < 0x80 { + if i == 9 && b > 1 { + return x, errors.New("varint overflows a 64-bit integer") + } + return x | uint64(b)< math.MaxUint32 { + return fmt.Errorf("pending byte stream chunk length of %d overflows a 32-bit integer", n) + } + slog.Debug("writing pending byte stream chunk length", "len", n) + if err := wrpc.WriteUint32(uint32(n), w); err != nil { + return fmt.Errorf("failed to write pending byte stream chunk length of %d: %w", n, err) + } + _, err = w.Write(chunk[:n]) + if err != nil { + return fmt.Errorf("failed to write pending byte stream chunk contents: %w", err) + } + if end { + if err := w.WriteByte(0); err != nil { + return fmt.Errorf("failed to write pending byte stream end byte: %w", err) + } + return nil + } + } + }, nil + } + }(v.Body, w) + if err != nil { + return nil, fmt.Errorf("failed to write `body` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "trailers") + write1, err := func(v wrpc.ReceiveCompleter[[]*wrpc.Tuple2[string, [][]uint8]], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + if v.IsComplete() { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close ready future: %w", cErr) + } else { + slog.Warn("failed to close ready future", "err", cErr) + } + } + } + }() + slog.Debug("writing future `future::ready` status byte") + if err = w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `future::ready` byte: %w", err) + } + slog.Debug("receiving ready future contents") + rx, err := v.Receive() + if err != nil && err != io.EOF { + return nil, fmt.Errorf("failed to receive ready future contents: %w", err) + } + slog.Debug("writing ready future contents") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return nil, fmt.Errorf("failed to write ready future contents: %w", err) + } + return write, nil + } else { + slog.Debug("writing future `future::pending` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + } + return func(w wrpc.IndexWriter) (err error) { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close pending future: %w", cErr) + } else { + slog.Warn("failed to close pending future", "err", cErr) + } + } + } + }() + slog.Debug("receiving outgoing pending future contents") + rx, err := v.Receive() + if err != nil { + return fmt.Errorf("failed to receive outgoing pending future: %w", err) + } + slog.Debug("writing pending future element") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return fmt.Errorf("failed to write pending future element: %w", err) + } + if write != nil { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + } + return nil + }, nil + } + }(v.Trailers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `trailers` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "method") + write2, err := (v.Method).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `method` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + slog.Debug("writing field", "name", "path-with-query") + write3, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.PathWithQuery, w) + if err != nil { + return nil, fmt.Errorf("failed to write `path-with-query` field: %w", err) + } + if write3 != nil { + writes[3] = write3 + } + slog.Debug("writing field", "name", "scheme") + write4, err := func(v *Scheme, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (*v).WriteToIndex(w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Scheme, w) + if err != nil { + return nil, fmt.Errorf("failed to write `scheme` field: %w", err) + } + if write4 != nil { + writes[4] = write4 + } + slog.Debug("writing field", "name", "authority") + write5, err := func(v *string, w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(*v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(v.Authority, w) + if err != nil { + return nil, fmt.Errorf("failed to write `authority` field: %w", err) + } + if write5 != nil { + writes[5] = write5 + } + slog.Debug("writing field", "name", "headers") + write6, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.Headers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `headers` field: %w", err) + } + if write6 != nil { + writes[6] = write6 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadRequest(r wrpc.IndexReader, path ...uint32) (*Request, error) { + v := &Request{} + var err error + slog.Debug("reading field", "name", "body") + v.Body, err = func(r wrpc.IndexReader, path ...uint32) (wrpc.ReadCompleter, error) { + slog.Debug("reading byte stream status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read byte stream status byte: %w", err) + } + switch status { + case 0: + r, err = r.Index(path...) + if err != nil { + return nil, fmt.Errorf("failed to index reader: %w", err) + } + return wrpc.NewByteStreamReader(wrpc.NewPendingByteReader(r)), nil + case 1: + slog.Debug("reading ready byte stream contents") + buf, err := + func(r interface { + io.ByteReader + io.Reader + }) ([]byte, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading byte list length", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< math.MaxUint32 { + return fmt.Errorf("pending byte stream chunk length of %d overflows a 32-bit integer", n) + } + slog.Debug("writing pending byte stream chunk length", "len", n) + if err := wrpc.WriteUint32(uint32(n), w); err != nil { + return fmt.Errorf("failed to write pending byte stream chunk length of %d: %w", n, err) + } + _, err = w.Write(chunk[:n]) + if err != nil { + return fmt.Errorf("failed to write pending byte stream chunk contents: %w", err) + } + if end { + if err := w.WriteByte(0); err != nil { + return fmt.Errorf("failed to write pending byte stream end byte: %w", err) + } + return nil + } + } + }, nil + } + }(v.Body, w) + if err != nil { + return nil, fmt.Errorf("failed to write `body` field: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing field", "name", "trailers") + write1, err := func(v wrpc.ReceiveCompleter[[]*wrpc.Tuple2[string, [][]uint8]], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + if v.IsComplete() { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close ready future: %w", cErr) + } else { + slog.Warn("failed to close ready future", "err", cErr) + } + } + } + }() + slog.Debug("writing future `future::ready` status byte") + if err = w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `future::ready` byte: %w", err) + } + slog.Debug("receiving ready future contents") + rx, err := v.Receive() + if err != nil && err != io.EOF { + return nil, fmt.Errorf("failed to receive ready future contents: %w", err) + } + slog.Debug("writing ready future contents") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return nil, fmt.Errorf("failed to write ready future contents: %w", err) + } + return write, nil + } else { + slog.Debug("writing future `future::pending` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `future::pending` byte: %w", err) + } + return func(w wrpc.IndexWriter) (err error) { + defer func() { + body, ok := v.(io.Closer) + if ok { + if cErr := body.Close(); cErr != nil { + if err == nil { + err = fmt.Errorf("failed to close pending future: %w", cErr) + } else { + slog.Warn("failed to close pending future", "err", cErr) + } + } + } + }() + slog.Debug("receiving outgoing pending future contents") + rx, err := v.Receive() + if err != nil { + return fmt.Errorf("failed to receive outgoing pending future: %w", err) + } + slog.Debug("writing pending future element") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + if v == nil { + slog.Debug("writing `option::none` status byte") + if err := w.WriteByte(0); err != nil { + return nil, fmt.Errorf("failed to write `option::none` byte: %w", err) + } + return nil, nil + } + slog.Debug("writing `option::some` status byte") + if err := w.WriteByte(1); err != nil { + return nil, fmt.Errorf("failed to write `option::some` status byte: %w", err) + } + slog.Debug("writing `option::some` payload") + write, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v, w) + if err != nil { + return nil, fmt.Errorf("failed to write `option::some` payload: %w", err) + } + if write != nil { + return func(w wrpc.IndexWriter) error { + w, err := w.Index(1) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + }, nil + } + return nil, nil + }(rx, w) + if err != nil { + return fmt.Errorf("failed to write pending future element: %w", err) + } + if write != nil { + w, err := w.Index(0) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + return write(w) + } + return nil + }, nil + } + }(v.Trailers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `trailers` field: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + slog.Debug("writing field", "name", "status") + write2, err := (func(wrpc.IndexWriter) error)(nil), func(v uint16, w interface { + io.ByteWriter + io.Writer + }) (err error) { b := make([]byte, binary.MaxVarintLen16); i := binary.PutUvarint(b, uint64(v)); slog.Debug("writing u16"); _, err = w.Write(b[:i]); return err }(v.Status, w) + if err != nil { + return nil, fmt.Errorf("failed to write `status` field: %w", err) + } + if write2 != nil { + writes[2] = write2 + } + slog.Debug("writing field", "name", "headers") + write3, err := func(v []*wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v *wrpc.Tuple2[string, [][]uint8], w wrpc.ByteWriter) (func(wrpc.IndexWriter) error, error) { + writes := make(map[uint32]func(wrpc.IndexWriter) error, 2) + slog.Debug("writing tuple element 0") + write0, err := (func(wrpc.IndexWriter) error)(nil), func(v string, w io.Writer) (err error) { + n := len(v) + if n > math.MaxUint32 { + return fmt.Errorf("string byte length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing string byte length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return fmt.Errorf("failed to write string byte length of %d: %w", n, err) + } + slog.Debug("writing string bytes") + _, err = w.Write([]byte(v)) + if err != nil { + return fmt.Errorf("failed to write string bytes: %w", err) + } + return nil + }(v.V0, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 0: %w", err) + } + if write0 != nil { + writes[0] = write0 + } + slog.Debug("writing tuple element 1") + write1, err := func(v [][]uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := func(v []uint8, w wrpc.ByteWriter) (write func(wrpc.IndexWriter) error, err error) { + n := len(v) + if n > math.MaxUint32 { + return nil, fmt.Errorf("list length of %d overflows a 32-bit integer", n) + } + if err = func(v int, w io.Writer) error { + b := make([]byte, binary.MaxVarintLen32) + i := binary.PutUvarint(b, uint64(v)) + slog.Debug("writing list length", "len", n) + _, err = w.Write(b[:i]) + return err + }(n, w); err != nil { + return nil, fmt.Errorf("failed to write list length of %d: %w", n, err) + } + slog.Debug("writing list elements") + writes := make(map[uint32]func(wrpc.IndexWriter) error, n) + for i, e := range v { + write, err := (func(wrpc.IndexWriter) error)(nil), func(v uint8, w io.ByteWriter) error { + slog.Debug("writing u8 byte") + return w.WriteByte(v) + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.V1, w) + if err != nil { + return nil, fmt.Errorf("failed to write tuple element 1: %w", err) + } + if write1 != nil { + writes[1] = write1 + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(e, w) + if err != nil { + return nil, fmt.Errorf("failed to write list element %d: %w", i, err) + } + if write != nil { + writes[uint32(i)] = write + } + } + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil + }(v.Headers, w) + if err != nil { + return nil, fmt.Errorf("failed to write `headers` field: %w", err) + } + if write3 != nil { + writes[3] = write3 + } + + if len(writes) > 0 { + return func(w wrpc.IndexWriter) error { + var wg errgroup.Group + for index, write := range writes { + w, err := w.Index(index) + if err != nil { + return fmt.Errorf("failed to index writer: %w", err) + } + write := write + wg.Go(func() error { + return write(w) + }) + } + return wg.Wait() + }, nil + } + return nil, nil +} +func ReadResponse(r wrpc.IndexReader, path ...uint32) (*Response, error) { + v := &Response{} + var err error + slog.Debug("reading field", "name", "body") + v.Body, err = func(r wrpc.IndexReader, path ...uint32) (wrpc.ReadCompleter, error) { + slog.Debug("reading byte stream status byte") + status, err := r.ReadByte() + if err != nil { + return nil, fmt.Errorf("failed to read byte stream status byte: %w", err) + } + switch status { + case 0: + r, err = r.Index(path...) + if err != nil { + return nil, fmt.Errorf("failed to index reader: %w", err) + } + return wrpc.NewByteStreamReader(wrpc.NewPendingByteReader(r)), nil + case 1: + slog.Debug("reading ready byte stream contents") + buf, err := + func(r interface { + io.ByteReader + io.Reader + }) ([]byte, error) { + var x uint32 + var s uint + for i := 0; i < 5; i++ { + slog.Debug("reading byte list length", "i", i) + b, err := r.ReadByte() + if err != nil { + if i > 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return x, fmt.Errorf("failed to read u16 byte: %w", err) + } + if b < 0x80 { + if i == 2 && b > 1 { + return x, errors.New("varint overflows a 16-bit integer") + } + return x | uint16(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return "", fmt.Errorf("failed to read string length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return "", errors.New("string length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("list length overflows a 32-bit integer") + } + x = x | uint32(b)< 0 && err == io.EOF { + err = io.ErrUnexpectedEOF + } + return nil, fmt.Errorf("failed to read byte list length byte: %w", err) + } + if b < 0x80 { + if i == 4 && b > 1 { + return nil, errors.New("byte list length overflows a 32-bit integer") + } + x = x | uint32(b)< ../../../go diff --git a/examples/go/http-outgoing-server/go.sum b/examples/go/http-outgoing-server/go.sum new file mode 100644 index 000000000..659136757 --- /dev/null +++ b/examples/go/http-outgoing-server/go.sum @@ -0,0 +1,12 @@ +github.com/klauspost/compress v1.17.8 h1:YcnTYrq7MikUT7k0Yb5eceMmALQPYBW/Xltxn0NAMnU= +github.com/klauspost/compress v1.17.8/go.mod h1:Di0epgTjJY877eYKx5yC51cX2A2Vl2ibi7bDH9ttBbw= +github.com/nats-io/nats.go v1.34.1 h1:syWey5xaNHZgicYBemv0nohUPPmaLteiBEUT6Q5+F/4= +github.com/nats-io/nats.go v1.34.1/go.mod h1:Ubdu4Nh9exXdSz0RVWRFBbRfrbSxOYd26oF0wkWclB8= +github.com/nats-io/nkeys v0.4.7 h1:RwNJbbIdYCoClSDNY7QVKZlyb/wfT6ugvFCiKy6vDvI= +github.com/nats-io/nkeys v0.4.7/go.mod h1:kqXRgRDPlGy7nGaEDMuYzmiJCIAAWDK0IMBtDmGD0nc= +github.com/nats-io/nuid v1.0.1 h1:5iA8DT8V7q8WK2EScv2padNa/rTESc1KdnPw4TC2paw= +github.com/nats-io/nuid v1.0.1/go.mod h1:19wcPz3Ph3q0Jbyiqsd0kePYG7A95tJPxeL+1OSON2c= +golang.org/x/crypto v0.23.0 h1:dIJU/v2J8Mdglj/8rJ6UUOM3Zc9zLZxVZwwxMooUSAI= +golang.org/x/sync v0.7.0 h1:YsImfSBoP9QPYL0xyKJPq0gcaJdG3rInoqxTWbfQu9M= +golang.org/x/sync v0.7.0/go.mod h1:Czt+wKu1gCyEFDUtn0jG5QVvpJ6rzVqr5aXyt9drQfk= +golang.org/x/sys v0.20.0 h1:Od9JTbYCk261bKm4M/mw7AklTlFYIa0bIp9BgSm1S8Y= diff --git a/examples/go/http-outgoing-server/http_outgoing_server.go b/examples/go/http-outgoing-server/http_outgoing_server.go new file mode 100644 index 000000000..17d53ec4c --- /dev/null +++ b/examples/go/http-outgoing-server/http_outgoing_server.go @@ -0,0 +1,3 @@ +//go:generate cargo run --bin wit-bindgen-wrpc go --out-dir bindings --package github.com/wrpc/wrpc/examples/go/http-outgoing-server/bindings wit + +package http_outgoing_server diff --git a/examples/go/http-outgoing-server/wit/deps.lock b/examples/go/http-outgoing-server/wit/deps.lock new file mode 100644 index 000000000..dab041ebd --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps.lock @@ -0,0 +1,34 @@ +[cli] +sha256 = "285865a31d777181b075f39e92bcfe59c89cd6bacce660be1b9a627646956258" +sha512 = "da2622210a9e3eea82b99f1a5b8a44ce5443d009cb943f7bca0bf9cf4360829b289913d7ee727c011f0f72994ea7dc8e661ebcc0a6b34b587297d80cd9b3f7e8" + +[clocks] +sha256 = "468b4d12892fe926b8eb5d398dbf579d566c93231fa44f415440572c695b7613" +sha512 = "e6b53a07221f1413953c9797c68f08b815fdaebf66419bbc1ea3e8b7dece73731062693634731f311a03957b268cf9cc509c518bd15e513c318aa04a8459b93a" + +[filesystem] +sha256 = "498c465cfd04587db40f970fff2185daa597d074c20b68a8bcbae558f261499b" +sha512 = "ead452f9b7bfb88593a502ec00d76d4228003d51c40fd0408aebc32d35c94673551b00230d730873361567cc209ec218c41fb4e95bad194268592c49e7964347" + +[http] +path = "../../../../crates/interface-http/wit/deps/http" +sha256 = "8f44402bde16c48e28c47dc53eab0b26af5b3b3482a1852cf77673e0880ba1c1" +sha512 = "760695f9a25c25bf75a25b731cb21c3bda9e288e450edda823324ecbc73d5d798bbb5de2edad999566980836f037463ee9e57d61789d04b3f3e381475b1a9a0f" + +[io] +sha256 = "7210e5653539a15478f894d4da24cc69d61924cbcba21d2804d69314a88e5a4c" +sha512 = "49184a1b0945a889abd52d25271172ed3dc2db6968fcdddb1bab7ee0081f4a3eeee0977ad2291126a37631c0d86eeea75d822fa8af224c422134500bf9f0f2bb" + +[random] +sha256 = "7371d03c037d924caba2587fb2e7c5773a0d3c5fcecbf7971e0e0ba57973c53d" +sha512 = "964c4e8925a53078e4d94ba907b54f89a0b7e154f46823a505391471466c17f53c8692682e5c85771712acd88b348686173fc07c53a3cfe3d301b8cd8ddd0de4" + +[sockets] +sha256 = "622bd28bbeb43736375dc02bd003fd3a016ff8ee91e14bab488325c6b38bf966" +sha512 = "5a63c1f36de0c4548e1d2297bdbededb28721cbad94ef7825c469eae29d7451c97e00b4c1d6730ee1ec0c4a5aac922961a2795762d4a0c3bb54e30a391a84bae" + +[wrpc-http] +path = "../../../../crates/interface-http/wit" +sha256 = "b7f5f8d26be1d5688e53f8495c0e6cd59c59d7c3f773298bf597653a90174f41" +sha512 = "0d477014a57cc9749ae90e1f04df1f5ddf5db07da8fabbffb35253fcd8c75849f153967aa025035018a9de4fab979e0a0359375d1d9bdf106abb78a331e43848" +deps = ["cli", "clocks", "filesystem", "io", "random", "sockets"] diff --git a/examples/go/http-outgoing-server/wit/deps.toml b/examples/go/http-outgoing-server/wit/deps.toml new file mode 100644 index 000000000..54baf4db3 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps.toml @@ -0,0 +1,2 @@ +http = "../../../../crates/interface-http/wit/deps/http" +wrpc-http = "../../../../crates/interface-http/wit" diff --git a/examples/go/http-outgoing-server/wit/deps/cli/command.wit b/examples/go/http-outgoing-server/wit/deps/cli/command.wit new file mode 100644 index 000000000..d8005bd38 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/command.wit @@ -0,0 +1,7 @@ +package wasi:cli@0.2.0; + +world command { + include imports; + + export run; +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/environment.wit b/examples/go/http-outgoing-server/wit/deps/cli/environment.wit new file mode 100644 index 000000000..70065233e --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/environment.wit @@ -0,0 +1,18 @@ +interface environment { + /// Get the POSIX-style environment variables. + /// + /// Each environment variable is provided as a pair of string variable names + /// and string value. + /// + /// Morally, these are a value import, but until value imports are available + /// in the component model, this import function should return the same + /// values each time it is called. + get-environment: func() -> list>; + + /// Get the POSIX-style arguments to the program. + get-arguments: func() -> list; + + /// Return a path that programs should use as their initial current working + /// directory, interpreting `.` as shorthand for this. + initial-cwd: func() -> option; +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/exit.wit b/examples/go/http-outgoing-server/wit/deps/cli/exit.wit new file mode 100644 index 000000000..d0c2b82ae --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/exit.wit @@ -0,0 +1,4 @@ +interface exit { + /// Exit the current instance and any linked instances. + exit: func(status: result); +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/imports.wit b/examples/go/http-outgoing-server/wit/deps/cli/imports.wit new file mode 100644 index 000000000..083b84a03 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/imports.wit @@ -0,0 +1,20 @@ +package wasi:cli@0.2.0; + +world imports { + include wasi:clocks/imports@0.2.0; + include wasi:filesystem/imports@0.2.0; + include wasi:sockets/imports@0.2.0; + include wasi:random/imports@0.2.0; + include wasi:io/imports@0.2.0; + + import environment; + import exit; + import stdin; + import stdout; + import stderr; + import terminal-input; + import terminal-output; + import terminal-stdin; + import terminal-stdout; + import terminal-stderr; +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/run.wit b/examples/go/http-outgoing-server/wit/deps/cli/run.wit new file mode 100644 index 000000000..a70ee8c03 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/run.wit @@ -0,0 +1,4 @@ +interface run { + /// Run the program. + run: func() -> result; +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/stdio.wit b/examples/go/http-outgoing-server/wit/deps/cli/stdio.wit new file mode 100644 index 000000000..31ef35b5a --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/stdio.wit @@ -0,0 +1,17 @@ +interface stdin { + use wasi:io/streams@0.2.0.{input-stream}; + + get-stdin: func() -> input-stream; +} + +interface stdout { + use wasi:io/streams@0.2.0.{output-stream}; + + get-stdout: func() -> output-stream; +} + +interface stderr { + use wasi:io/streams@0.2.0.{output-stream}; + + get-stderr: func() -> output-stream; +} diff --git a/examples/go/http-outgoing-server/wit/deps/cli/terminal.wit b/examples/go/http-outgoing-server/wit/deps/cli/terminal.wit new file mode 100644 index 000000000..38c724efc --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/cli/terminal.wit @@ -0,0 +1,49 @@ +/// Terminal input. +/// +/// In the future, this may include functions for disabling echoing, +/// disabling input buffering so that keyboard events are sent through +/// immediately, querying supported features, and so on. +interface terminal-input { + /// The input side of a terminal. + resource terminal-input; +} + +/// Terminal output. +/// +/// In the future, this may include functions for querying the terminal +/// size, being notified of terminal size changes, querying supported +/// features, and so on. +interface terminal-output { + /// The output side of a terminal. + resource terminal-output; +} + +/// An interface providing an optional `terminal-input` for stdin as a +/// link-time authority. +interface terminal-stdin { + use terminal-input.{terminal-input}; + + /// If stdin is connected to a terminal, return a `terminal-input` handle + /// allowing further interaction with it. + get-terminal-stdin: func() -> option; +} + +/// An interface providing an optional `terminal-output` for stdout as a +/// link-time authority. +interface terminal-stdout { + use terminal-output.{terminal-output}; + + /// If stdout is connected to a terminal, return a `terminal-output` handle + /// allowing further interaction with it. + get-terminal-stdout: func() -> option; +} + +/// An interface providing an optional `terminal-output` for stderr as a +/// link-time authority. +interface terminal-stderr { + use terminal-output.{terminal-output}; + + /// If stderr is connected to a terminal, return a `terminal-output` handle + /// allowing further interaction with it. + get-terminal-stderr: func() -> option; +} diff --git a/examples/go/http-outgoing-server/wit/deps/clocks/monotonic-clock.wit b/examples/go/http-outgoing-server/wit/deps/clocks/monotonic-clock.wit new file mode 100644 index 000000000..4e4dc3a19 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/clocks/monotonic-clock.wit @@ -0,0 +1,45 @@ +package wasi:clocks@0.2.0; +/// WASI Monotonic Clock is a clock API intended to let users measure elapsed +/// time. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +/// +/// A monotonic clock is a clock which has an unspecified initial value, and +/// successive reads of the clock will produce non-decreasing values. +/// +/// It is intended for measuring elapsed time. +interface monotonic-clock { + use wasi:io/poll@0.2.0.{pollable}; + + /// An instant in time, in nanoseconds. An instant is relative to an + /// unspecified initial value, and can only be compared to instances from + /// the same monotonic-clock. + type instant = u64; + + /// A duration of time, in nanoseconds. + type duration = u64; + + /// Read the current value of the clock. + /// + /// The clock is monotonic, therefore calling this function repeatedly will + /// produce a sequence of non-decreasing values. + now: func() -> instant; + + /// Query the resolution of the clock. Returns the duration of time + /// corresponding to a clock tick. + resolution: func() -> duration; + + /// Create a `pollable` which will resolve once the specified instant + /// occured. + subscribe-instant: func( + when: instant, + ) -> pollable; + + /// Create a `pollable` which will resolve once the given duration has + /// elapsed, starting at the time at which this function was called. + /// occured. + subscribe-duration: func( + when: duration, + ) -> pollable; +} diff --git a/examples/go/http-outgoing-server/wit/deps/clocks/wall-clock.wit b/examples/go/http-outgoing-server/wit/deps/clocks/wall-clock.wit new file mode 100644 index 000000000..440ca0f33 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/clocks/wall-clock.wit @@ -0,0 +1,42 @@ +package wasi:clocks@0.2.0; +/// WASI Wall Clock is a clock API intended to let users query the current +/// time. The name "wall" makes an analogy to a "clock on the wall", which +/// is not necessarily monotonic as it may be reset. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +/// +/// A wall clock is a clock which measures the date and time according to +/// some external reference. +/// +/// External references may be reset, so this clock is not necessarily +/// monotonic, making it unsuitable for measuring elapsed time. +/// +/// It is intended for reporting the current date and time for humans. +interface wall-clock { + /// A time and date in seconds plus nanoseconds. + record datetime { + seconds: u64, + nanoseconds: u32, + } + + /// Read the current value of the clock. + /// + /// This clock is not monotonic, therefore calling this function repeatedly + /// will not necessarily produce a sequence of non-decreasing values. + /// + /// The returned timestamps represent the number of seconds since + /// 1970-01-01T00:00:00Z, also known as [POSIX's Seconds Since the Epoch], + /// also known as [Unix Time]. + /// + /// The nanoseconds field of the output is always less than 1000000000. + /// + /// [POSIX's Seconds Since the Epoch]: https://pubs.opengroup.org/onlinepubs/9699919799/xrat/V4_xbd_chap04.html#tag_21_04_16 + /// [Unix Time]: https://en.wikipedia.org/wiki/Unix_time + now: func() -> datetime; + + /// Query the resolution of the clock. + /// + /// The nanoseconds field of the output is always less than 1000000000. + resolution: func() -> datetime; +} diff --git a/examples/go/http-outgoing-server/wit/deps/clocks/world.wit b/examples/go/http-outgoing-server/wit/deps/clocks/world.wit new file mode 100644 index 000000000..c0224572a --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/clocks/world.wit @@ -0,0 +1,6 @@ +package wasi:clocks@0.2.0; + +world imports { + import monotonic-clock; + import wall-clock; +} diff --git a/examples/go/http-outgoing-server/wit/deps/filesystem/preopens.wit b/examples/go/http-outgoing-server/wit/deps/filesystem/preopens.wit new file mode 100644 index 000000000..da801f6d6 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/filesystem/preopens.wit @@ -0,0 +1,8 @@ +package wasi:filesystem@0.2.0; + +interface preopens { + use types.{descriptor}; + + /// Return the set of preopened directories, and their path. + get-directories: func() -> list>; +} diff --git a/examples/go/http-outgoing-server/wit/deps/filesystem/types.wit b/examples/go/http-outgoing-server/wit/deps/filesystem/types.wit new file mode 100644 index 000000000..11108fcda --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/filesystem/types.wit @@ -0,0 +1,634 @@ +package wasi:filesystem@0.2.0; +/// WASI filesystem is a filesystem API primarily intended to let users run WASI +/// programs that access their files on their existing filesystems, without +/// significant overhead. +/// +/// It is intended to be roughly portable between Unix-family platforms and +/// Windows, though it does not hide many of the major differences. +/// +/// Paths are passed as interface-type `string`s, meaning they must consist of +/// a sequence of Unicode Scalar Values (USVs). Some filesystems may contain +/// paths which are not accessible by this API. +/// +/// The directory separator in WASI is always the forward-slash (`/`). +/// +/// All paths in WASI are relative paths, and are interpreted relative to a +/// `descriptor` referring to a base directory. If a `path` argument to any WASI +/// function starts with `/`, or if any step of resolving a `path`, including +/// `..` and symbolic link steps, reaches a directory outside of the base +/// directory, or reaches a symlink to an absolute or rooted path in the +/// underlying filesystem, the function fails with `error-code::not-permitted`. +/// +/// For more information about WASI path resolution and sandboxing, see +/// [WASI filesystem path resolution]. +/// +/// [WASI filesystem path resolution]: https://github.com/WebAssembly/wasi-filesystem/blob/main/path-resolution.md +interface types { + use wasi:io/streams@0.2.0.{input-stream, output-stream, error}; + use wasi:clocks/wall-clock@0.2.0.{datetime}; + + /// File size or length of a region within a file. + type filesize = u64; + + /// The type of a filesystem object referenced by a descriptor. + /// + /// Note: This was called `filetype` in earlier versions of WASI. + enum descriptor-type { + /// The type of the descriptor or file is unknown or is different from + /// any of the other types specified. + unknown, + /// The descriptor refers to a block device inode. + block-device, + /// The descriptor refers to a character device inode. + character-device, + /// The descriptor refers to a directory inode. + directory, + /// The descriptor refers to a named pipe. + fifo, + /// The file refers to a symbolic link inode. + symbolic-link, + /// The descriptor refers to a regular file inode. + regular-file, + /// The descriptor refers to a socket. + socket, + } + + /// Descriptor flags. + /// + /// Note: This was called `fdflags` in earlier versions of WASI. + flags descriptor-flags { + /// Read mode: Data can be read. + read, + /// Write mode: Data can be written to. + write, + /// Request that writes be performed according to synchronized I/O file + /// integrity completion. The data stored in the file and the file's + /// metadata are synchronized. This is similar to `O_SYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + file-integrity-sync, + /// Request that writes be performed according to synchronized I/O data + /// integrity completion. Only the data stored in the file is + /// synchronized. This is similar to `O_DSYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + data-integrity-sync, + /// Requests that reads be performed at the same level of integrety + /// requested for writes. This is similar to `O_RSYNC` in POSIX. + /// + /// The precise semantics of this operation have not yet been defined for + /// WASI. At this time, it should be interpreted as a request, and not a + /// requirement. + requested-write-sync, + /// Mutating directories mode: Directory contents may be mutated. + /// + /// When this flag is unset on a descriptor, operations using the + /// descriptor which would create, rename, delete, modify the data or + /// metadata of filesystem objects, or obtain another handle which + /// would permit any of those, shall fail with `error-code::read-only` if + /// they would otherwise succeed. + /// + /// This may only be set on directories. + mutate-directory, + } + + /// File attributes. + /// + /// Note: This was called `filestat` in earlier versions of WASI. + record descriptor-stat { + /// File type. + %type: descriptor-type, + /// Number of hard links to the file. + link-count: link-count, + /// For regular files, the file size in bytes. For symbolic links, the + /// length in bytes of the pathname contained in the symbolic link. + size: filesize, + /// Last data access timestamp. + /// + /// If the `option` is none, the platform doesn't maintain an access + /// timestamp for this file. + data-access-timestamp: option, + /// Last data modification timestamp. + /// + /// If the `option` is none, the platform doesn't maintain a + /// modification timestamp for this file. + data-modification-timestamp: option, + /// Last file status-change timestamp. + /// + /// If the `option` is none, the platform doesn't maintain a + /// status-change timestamp for this file. + status-change-timestamp: option, + } + + /// Flags determining the method of how paths are resolved. + flags path-flags { + /// As long as the resolved path corresponds to a symbolic link, it is + /// expanded. + symlink-follow, + } + + /// Open flags used by `open-at`. + flags open-flags { + /// Create file if it does not exist, similar to `O_CREAT` in POSIX. + create, + /// Fail if not a directory, similar to `O_DIRECTORY` in POSIX. + directory, + /// Fail if file already exists, similar to `O_EXCL` in POSIX. + exclusive, + /// Truncate file to size 0, similar to `O_TRUNC` in POSIX. + truncate, + } + + /// Number of hard links to an inode. + type link-count = u64; + + /// When setting a timestamp, this gives the value to set it to. + variant new-timestamp { + /// Leave the timestamp set to its previous value. + no-change, + /// Set the timestamp to the current time of the system clock associated + /// with the filesystem. + now, + /// Set the timestamp to the given value. + timestamp(datetime), + } + + /// A directory entry. + record directory-entry { + /// The type of the file referred to by this directory entry. + %type: descriptor-type, + + /// The name of the object. + name: string, + } + + /// Error codes returned by functions, similar to `errno` in POSIX. + /// Not all of these error codes are returned by the functions provided by this + /// API; some are used in higher-level library layers, and others are provided + /// merely for alignment with POSIX. + enum error-code { + /// Permission denied, similar to `EACCES` in POSIX. + access, + /// Resource unavailable, or operation would block, similar to `EAGAIN` and `EWOULDBLOCK` in POSIX. + would-block, + /// Connection already in progress, similar to `EALREADY` in POSIX. + already, + /// Bad descriptor, similar to `EBADF` in POSIX. + bad-descriptor, + /// Device or resource busy, similar to `EBUSY` in POSIX. + busy, + /// Resource deadlock would occur, similar to `EDEADLK` in POSIX. + deadlock, + /// Storage quota exceeded, similar to `EDQUOT` in POSIX. + quota, + /// File exists, similar to `EEXIST` in POSIX. + exist, + /// File too large, similar to `EFBIG` in POSIX. + file-too-large, + /// Illegal byte sequence, similar to `EILSEQ` in POSIX. + illegal-byte-sequence, + /// Operation in progress, similar to `EINPROGRESS` in POSIX. + in-progress, + /// Interrupted function, similar to `EINTR` in POSIX. + interrupted, + /// Invalid argument, similar to `EINVAL` in POSIX. + invalid, + /// I/O error, similar to `EIO` in POSIX. + io, + /// Is a directory, similar to `EISDIR` in POSIX. + is-directory, + /// Too many levels of symbolic links, similar to `ELOOP` in POSIX. + loop, + /// Too many links, similar to `EMLINK` in POSIX. + too-many-links, + /// Message too large, similar to `EMSGSIZE` in POSIX. + message-size, + /// Filename too long, similar to `ENAMETOOLONG` in POSIX. + name-too-long, + /// No such device, similar to `ENODEV` in POSIX. + no-device, + /// No such file or directory, similar to `ENOENT` in POSIX. + no-entry, + /// No locks available, similar to `ENOLCK` in POSIX. + no-lock, + /// Not enough space, similar to `ENOMEM` in POSIX. + insufficient-memory, + /// No space left on device, similar to `ENOSPC` in POSIX. + insufficient-space, + /// Not a directory or a symbolic link to a directory, similar to `ENOTDIR` in POSIX. + not-directory, + /// Directory not empty, similar to `ENOTEMPTY` in POSIX. + not-empty, + /// State not recoverable, similar to `ENOTRECOVERABLE` in POSIX. + not-recoverable, + /// Not supported, similar to `ENOTSUP` and `ENOSYS` in POSIX. + unsupported, + /// Inappropriate I/O control operation, similar to `ENOTTY` in POSIX. + no-tty, + /// No such device or address, similar to `ENXIO` in POSIX. + no-such-device, + /// Value too large to be stored in data type, similar to `EOVERFLOW` in POSIX. + overflow, + /// Operation not permitted, similar to `EPERM` in POSIX. + not-permitted, + /// Broken pipe, similar to `EPIPE` in POSIX. + pipe, + /// Read-only file system, similar to `EROFS` in POSIX. + read-only, + /// Invalid seek, similar to `ESPIPE` in POSIX. + invalid-seek, + /// Text file busy, similar to `ETXTBSY` in POSIX. + text-file-busy, + /// Cross-device link, similar to `EXDEV` in POSIX. + cross-device, + } + + /// File or memory access pattern advisory information. + enum advice { + /// The application has no advice to give on its behavior with respect + /// to the specified data. + normal, + /// The application expects to access the specified data sequentially + /// from lower offsets to higher offsets. + sequential, + /// The application expects to access the specified data in a random + /// order. + random, + /// The application expects to access the specified data in the near + /// future. + will-need, + /// The application expects that it will not access the specified data + /// in the near future. + dont-need, + /// The application expects to access the specified data once and then + /// not reuse it thereafter. + no-reuse, + } + + /// A 128-bit hash value, split into parts because wasm doesn't have a + /// 128-bit integer type. + record metadata-hash-value { + /// 64 bits of a 128-bit hash value. + lower: u64, + /// Another 64 bits of a 128-bit hash value. + upper: u64, + } + + /// A descriptor is a reference to a filesystem object, which may be a file, + /// directory, named pipe, special file, or other object on which filesystem + /// calls may be made. + resource descriptor { + /// Return a stream for reading from a file, if available. + /// + /// May fail with an error-code describing why the file cannot be read. + /// + /// Multiple read, write, and append streams may be active on the same open + /// file and they do not interfere with each other. + /// + /// Note: This allows using `read-stream`, which is similar to `read` in POSIX. + read-via-stream: func( + /// The offset within the file at which to start reading. + offset: filesize, + ) -> result; + + /// Return a stream for writing to a file, if available. + /// + /// May fail with an error-code describing why the file cannot be written. + /// + /// Note: This allows using `write-stream`, which is similar to `write` in + /// POSIX. + write-via-stream: func( + /// The offset within the file at which to start writing. + offset: filesize, + ) -> result; + + /// Return a stream for appending to a file, if available. + /// + /// May fail with an error-code describing why the file cannot be appended. + /// + /// Note: This allows using `write-stream`, which is similar to `write` with + /// `O_APPEND` in in POSIX. + append-via-stream: func() -> result; + + /// Provide file advisory information on a descriptor. + /// + /// This is similar to `posix_fadvise` in POSIX. + advise: func( + /// The offset within the file to which the advisory applies. + offset: filesize, + /// The length of the region to which the advisory applies. + length: filesize, + /// The advice. + advice: advice + ) -> result<_, error-code>; + + /// Synchronize the data of a file to disk. + /// + /// This function succeeds with no effect if the file descriptor is not + /// opened for writing. + /// + /// Note: This is similar to `fdatasync` in POSIX. + sync-data: func() -> result<_, error-code>; + + /// Get flags associated with a descriptor. + /// + /// Note: This returns similar flags to `fcntl(fd, F_GETFL)` in POSIX. + /// + /// Note: This returns the value that was the `fs_flags` value returned + /// from `fdstat_get` in earlier versions of WASI. + get-flags: func() -> result; + + /// Get the dynamic type of a descriptor. + /// + /// Note: This returns the same value as the `type` field of the `fd-stat` + /// returned by `stat`, `stat-at` and similar. + /// + /// Note: This returns similar flags to the `st_mode & S_IFMT` value provided + /// by `fstat` in POSIX. + /// + /// Note: This returns the value that was the `fs_filetype` value returned + /// from `fdstat_get` in earlier versions of WASI. + get-type: func() -> result; + + /// Adjust the size of an open file. If this increases the file's size, the + /// extra bytes are filled with zeros. + /// + /// Note: This was called `fd_filestat_set_size` in earlier versions of WASI. + set-size: func(size: filesize) -> result<_, error-code>; + + /// Adjust the timestamps of an open file or directory. + /// + /// Note: This is similar to `futimens` in POSIX. + /// + /// Note: This was called `fd_filestat_set_times` in earlier versions of WASI. + set-times: func( + /// The desired values of the data access timestamp. + data-access-timestamp: new-timestamp, + /// The desired values of the data modification timestamp. + data-modification-timestamp: new-timestamp, + ) -> result<_, error-code>; + + /// Read from a descriptor, without using and updating the descriptor's offset. + /// + /// This function returns a list of bytes containing the data that was + /// read, along with a bool which, when true, indicates that the end of the + /// file was reached. The returned list will contain up to `length` bytes; it + /// may return fewer than requested, if the end of the file is reached or + /// if the I/O operation is interrupted. + /// + /// In the future, this may change to return a `stream`. + /// + /// Note: This is similar to `pread` in POSIX. + read: func( + /// The maximum number of bytes to read. + length: filesize, + /// The offset within the file at which to read. + offset: filesize, + ) -> result, bool>, error-code>; + + /// Write to a descriptor, without using and updating the descriptor's offset. + /// + /// It is valid to write past the end of a file; the file is extended to the + /// extent of the write, with bytes between the previous end and the start of + /// the write set to zero. + /// + /// In the future, this may change to take a `stream`. + /// + /// Note: This is similar to `pwrite` in POSIX. + write: func( + /// Data to write + buffer: list, + /// The offset within the file at which to write. + offset: filesize, + ) -> result; + + /// Read directory entries from a directory. + /// + /// On filesystems where directories contain entries referring to themselves + /// and their parents, often named `.` and `..` respectively, these entries + /// are omitted. + /// + /// This always returns a new stream which starts at the beginning of the + /// directory. Multiple streams may be active on the same directory, and they + /// do not interfere with each other. + read-directory: func() -> result; + + /// Synchronize the data and metadata of a file to disk. + /// + /// This function succeeds with no effect if the file descriptor is not + /// opened for writing. + /// + /// Note: This is similar to `fsync` in POSIX. + sync: func() -> result<_, error-code>; + + /// Create a directory. + /// + /// Note: This is similar to `mkdirat` in POSIX. + create-directory-at: func( + /// The relative path at which to create the directory. + path: string, + ) -> result<_, error-code>; + + /// Return the attributes of an open file or directory. + /// + /// Note: This is similar to `fstat` in POSIX, except that it does not return + /// device and inode information. For testing whether two descriptors refer to + /// the same underlying filesystem object, use `is-same-object`. To obtain + /// additional data that can be used do determine whether a file has been + /// modified, use `metadata-hash`. + /// + /// Note: This was called `fd_filestat_get` in earlier versions of WASI. + stat: func() -> result; + + /// Return the attributes of a file or directory. + /// + /// Note: This is similar to `fstatat` in POSIX, except that it does not + /// return device and inode information. See the `stat` description for a + /// discussion of alternatives. + /// + /// Note: This was called `path_filestat_get` in earlier versions of WASI. + stat-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to inspect. + path: string, + ) -> result; + + /// Adjust the timestamps of a file or directory. + /// + /// Note: This is similar to `utimensat` in POSIX. + /// + /// Note: This was called `path_filestat_set_times` in earlier versions of + /// WASI. + set-times-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to operate on. + path: string, + /// The desired values of the data access timestamp. + data-access-timestamp: new-timestamp, + /// The desired values of the data modification timestamp. + data-modification-timestamp: new-timestamp, + ) -> result<_, error-code>; + + /// Create a hard link. + /// + /// Note: This is similar to `linkat` in POSIX. + link-at: func( + /// Flags determining the method of how the path is resolved. + old-path-flags: path-flags, + /// The relative source path from which to link. + old-path: string, + /// The base directory for `new-path`. + new-descriptor: borrow, + /// The relative destination path at which to create the hard link. + new-path: string, + ) -> result<_, error-code>; + + /// Open a file or directory. + /// + /// The returned descriptor is not guaranteed to be the lowest-numbered + /// descriptor not currently open/ it is randomized to prevent applications + /// from depending on making assumptions about indexes, since this is + /// error-prone in multi-threaded contexts. The returned descriptor is + /// guaranteed to be less than 2**31. + /// + /// If `flags` contains `descriptor-flags::mutate-directory`, and the base + /// descriptor doesn't have `descriptor-flags::mutate-directory` set, + /// `open-at` fails with `error-code::read-only`. + /// + /// If `flags` contains `write` or `mutate-directory`, or `open-flags` + /// contains `truncate` or `create`, and the base descriptor doesn't have + /// `descriptor-flags::mutate-directory` set, `open-at` fails with + /// `error-code::read-only`. + /// + /// Note: This is similar to `openat` in POSIX. + open-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the object to open. + path: string, + /// The method by which to open the file. + open-flags: open-flags, + /// Flags to use for the resulting descriptor. + %flags: descriptor-flags, + ) -> result; + + /// Read the contents of a symbolic link. + /// + /// If the contents contain an absolute or rooted path in the underlying + /// filesystem, this function fails with `error-code::not-permitted`. + /// + /// Note: This is similar to `readlinkat` in POSIX. + readlink-at: func( + /// The relative path of the symbolic link from which to read. + path: string, + ) -> result; + + /// Remove a directory. + /// + /// Return `error-code::not-empty` if the directory is not empty. + /// + /// Note: This is similar to `unlinkat(fd, path, AT_REMOVEDIR)` in POSIX. + remove-directory-at: func( + /// The relative path to a directory to remove. + path: string, + ) -> result<_, error-code>; + + /// Rename a filesystem object. + /// + /// Note: This is similar to `renameat` in POSIX. + rename-at: func( + /// The relative source path of the file or directory to rename. + old-path: string, + /// The base directory for `new-path`. + new-descriptor: borrow, + /// The relative destination path to which to rename the file or directory. + new-path: string, + ) -> result<_, error-code>; + + /// Create a symbolic link (also known as a "symlink"). + /// + /// If `old-path` starts with `/`, the function fails with + /// `error-code::not-permitted`. + /// + /// Note: This is similar to `symlinkat` in POSIX. + symlink-at: func( + /// The contents of the symbolic link. + old-path: string, + /// The relative destination path at which to create the symbolic link. + new-path: string, + ) -> result<_, error-code>; + + /// Unlink a filesystem object that is not a directory. + /// + /// Return `error-code::is-directory` if the path refers to a directory. + /// Note: This is similar to `unlinkat(fd, path, 0)` in POSIX. + unlink-file-at: func( + /// The relative path to a file to unlink. + path: string, + ) -> result<_, error-code>; + + /// Test whether two descriptors refer to the same filesystem object. + /// + /// In POSIX, this corresponds to testing whether the two descriptors have the + /// same device (`st_dev`) and inode (`st_ino` or `d_ino`) numbers. + /// wasi-filesystem does not expose device and inode numbers, so this function + /// may be used instead. + is-same-object: func(other: borrow) -> bool; + + /// Return a hash of the metadata associated with a filesystem object referred + /// to by a descriptor. + /// + /// This returns a hash of the last-modification timestamp and file size, and + /// may also include the inode number, device number, birth timestamp, and + /// other metadata fields that may change when the file is modified or + /// replaced. It may also include a secret value chosen by the + /// implementation and not otherwise exposed. + /// + /// Implementations are encourated to provide the following properties: + /// + /// - If the file is not modified or replaced, the computed hash value should + /// usually not change. + /// - If the object is modified or replaced, the computed hash value should + /// usually change. + /// - The inputs to the hash should not be easily computable from the + /// computed hash. + /// + /// However, none of these is required. + metadata-hash: func() -> result; + + /// Return a hash of the metadata associated with a filesystem object referred + /// to by a directory descriptor and a relative path. + /// + /// This performs the same hash computation as `metadata-hash`. + metadata-hash-at: func( + /// Flags determining the method of how the path is resolved. + path-flags: path-flags, + /// The relative path of the file or directory to inspect. + path: string, + ) -> result; + } + + /// A stream of directory entries. + resource directory-entry-stream { + /// Read a single directory entry from a `directory-entry-stream`. + read-directory-entry: func() -> result, error-code>; + } + + /// Attempts to extract a filesystem-related `error-code` from the stream + /// `error` provided. + /// + /// Stream operations which return `stream-error::last-operation-failed` + /// have a payload with more information about the operation that failed. + /// This payload can be passed through to this function to see if there's + /// filesystem-related information about the error to return. + /// + /// Note that this function is fallible because not all stream-related + /// errors are filesystem-related errors. + filesystem-error-code: func(err: borrow) -> option; +} diff --git a/examples/go/http-outgoing-server/wit/deps/filesystem/world.wit b/examples/go/http-outgoing-server/wit/deps/filesystem/world.wit new file mode 100644 index 000000000..663f57920 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/filesystem/world.wit @@ -0,0 +1,6 @@ +package wasi:filesystem@0.2.0; + +world imports { + import types; + import preopens; +} diff --git a/examples/go/http-outgoing-server/wit/deps/http/handler.wit b/examples/go/http-outgoing-server/wit/deps/http/handler.wit new file mode 100644 index 000000000..a34a0649d --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/http/handler.wit @@ -0,0 +1,43 @@ +/// This interface defines a handler of incoming HTTP Requests. It should +/// be exported by components which can respond to HTTP Requests. +interface incoming-handler { + use types.{incoming-request, response-outparam}; + + /// This function is invoked with an incoming HTTP Request, and a resource + /// `response-outparam` which provides the capability to reply with an HTTP + /// Response. The response is sent by calling the `response-outparam.set` + /// method, which allows execution to continue after the response has been + /// sent. This enables both streaming to the response body, and performing other + /// work. + /// + /// The implementor of this function must write a response to the + /// `response-outparam` before returning, or else the caller will respond + /// with an error on its behalf. + handle: func( + request: incoming-request, + response-out: response-outparam + ); +} + +/// This interface defines a handler of outgoing HTTP Requests. It should be +/// imported by components which wish to make HTTP Requests. +interface outgoing-handler { + use types.{ + outgoing-request, request-options, future-incoming-response, error-code + }; + + /// This function is invoked with an outgoing HTTP Request, and it returns + /// a resource `future-incoming-response` which represents an HTTP Response + /// which may arrive in the future. + /// + /// The `options` argument accepts optional parameters for the HTTP + /// protocol's transport layer. + /// + /// This function may return an error if the `outgoing-request` is invalid + /// or not allowed to be made. Otherwise, protocol errors are reported + /// through the `future-incoming-response`. + handle: func( + request: outgoing-request, + options: option + ) -> result; +} diff --git a/examples/go/http-outgoing-server/wit/deps/http/proxy.wit b/examples/go/http-outgoing-server/wit/deps/http/proxy.wit new file mode 100644 index 000000000..687c24d23 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/http/proxy.wit @@ -0,0 +1,32 @@ +package wasi:http@0.2.0; + +/// The `wasi:http/proxy` world captures a widely-implementable intersection of +/// hosts that includes HTTP forward and reverse proxies. Components targeting +/// this world may concurrently stream in and out any number of incoming and +/// outgoing HTTP requests. +world proxy { + /// HTTP proxies have access to time and randomness. + include wasi:clocks/imports@0.2.0; + import wasi:random/random@0.2.0; + + /// Proxies have standard output and error streams which are expected to + /// terminate in a developer-facing console provided by the host. + import wasi:cli/stdout@0.2.0; + import wasi:cli/stderr@0.2.0; + + /// TODO: this is a temporary workaround until component tooling is able to + /// gracefully handle the absence of stdin. Hosts must return an eof stream + /// for this import, which is what wasi-libc + tooling will do automatically + /// when this import is properly removed. + import wasi:cli/stdin@0.2.0; + + /// This is the default handler to use when user code simply wants to make an + /// HTTP request (e.g., via `fetch()`). + import outgoing-handler; + + /// The host delivers incoming HTTP requests to a component by calling the + /// `handle` function of this exported interface. A host may arbitrarily reuse + /// or not reuse component instance when delivering incoming HTTP requests and + /// thus a component must be able to handle 0..N calls to `handle`. + export incoming-handler; +} diff --git a/examples/go/http-outgoing-server/wit/deps/http/types.wit b/examples/go/http-outgoing-server/wit/deps/http/types.wit new file mode 100644 index 000000000..755ac6a6b --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/http/types.wit @@ -0,0 +1,570 @@ +/// This interface defines all of the types and methods for implementing +/// HTTP Requests and Responses, both incoming and outgoing, as well as +/// their headers, trailers, and bodies. +interface types { + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + use wasi:io/streams@0.2.0.{input-stream, output-stream}; + use wasi:io/error@0.2.0.{error as io-error}; + use wasi:io/poll@0.2.0.{pollable}; + + /// This type corresponds to HTTP standard Methods. + variant method { + get, + head, + post, + put, + delete, + connect, + options, + trace, + patch, + other(string) + } + + /// This type corresponds to HTTP standard Related Schemes. + variant scheme { + HTTP, + HTTPS, + other(string) + } + + /// These cases are inspired by the IANA HTTP Proxy Error Types: + /// https://www.iana.org/assignments/http-proxy-status/http-proxy-status.xhtml#table-http-proxy-error-types + variant error-code { + DNS-timeout, + DNS-error(DNS-error-payload), + destination-not-found, + destination-unavailable, + destination-IP-prohibited, + destination-IP-unroutable, + connection-refused, + connection-terminated, + connection-timeout, + connection-read-timeout, + connection-write-timeout, + connection-limit-reached, + TLS-protocol-error, + TLS-certificate-error, + TLS-alert-received(TLS-alert-received-payload), + HTTP-request-denied, + HTTP-request-length-required, + HTTP-request-body-size(option), + HTTP-request-method-invalid, + HTTP-request-URI-invalid, + HTTP-request-URI-too-long, + HTTP-request-header-section-size(option), + HTTP-request-header-size(option), + HTTP-request-trailer-section-size(option), + HTTP-request-trailer-size(field-size-payload), + HTTP-response-incomplete, + HTTP-response-header-section-size(option), + HTTP-response-header-size(field-size-payload), + HTTP-response-body-size(option), + HTTP-response-trailer-section-size(option), + HTTP-response-trailer-size(field-size-payload), + HTTP-response-transfer-coding(option), + HTTP-response-content-coding(option), + HTTP-response-timeout, + HTTP-upgrade-failed, + HTTP-protocol-error, + loop-detected, + configuration-error, + /// This is a catch-all error for anything that doesn't fit cleanly into a + /// more specific case. It also includes an optional string for an + /// unstructured description of the error. Users should not depend on the + /// string for diagnosing errors, as it's not required to be consistent + /// between implementations. + internal-error(option) + } + + /// Defines the case payload type for `DNS-error` above: + record DNS-error-payload { + rcode: option, + info-code: option + } + + /// Defines the case payload type for `TLS-alert-received` above: + record TLS-alert-received-payload { + alert-id: option, + alert-message: option + } + + /// Defines the case payload type for `HTTP-response-{header,trailer}-size` above: + record field-size-payload { + field-name: option, + field-size: option + } + + /// Attempts to extract a http-related `error` from the wasi:io `error` + /// provided. + /// + /// Stream operations which return + /// `wasi:io/stream/stream-error::last-operation-failed` have a payload of + /// type `wasi:io/error/error` with more information about the operation + /// that failed. This payload can be passed through to this function to see + /// if there's http-related information about the error to return. + /// + /// Note that this function is fallible because not all io-errors are + /// http-related errors. + http-error-code: func(err: borrow) -> option; + + /// This type enumerates the different kinds of errors that may occur when + /// setting or appending to a `fields` resource. + variant header-error { + /// This error indicates that a `field-key` or `field-value` was + /// syntactically invalid when used with an operation that sets headers in a + /// `fields`. + invalid-syntax, + + /// This error indicates that a forbidden `field-key` was used when trying + /// to set a header in a `fields`. + forbidden, + + /// This error indicates that the operation on the `fields` was not + /// permitted because the fields are immutable. + immutable, + } + + /// Field keys are always strings. + type field-key = string; + + /// Field values should always be ASCII strings. However, in + /// reality, HTTP implementations often have to interpret malformed values, + /// so they are provided as a list of bytes. + type field-value = list; + + /// This following block defines the `fields` resource which corresponds to + /// HTTP standard Fields. Fields are a common representation used for both + /// Headers and Trailers. + /// + /// A `fields` may be mutable or immutable. A `fields` created using the + /// constructor, `from-list`, or `clone` will be mutable, but a `fields` + /// resource given by other means (including, but not limited to, + /// `incoming-request.headers`, `outgoing-request.headers`) might be be + /// immutable. In an immutable fields, the `set`, `append`, and `delete` + /// operations will fail with `header-error.immutable`. + resource fields { + + /// Construct an empty HTTP Fields. + /// + /// The resulting `fields` is mutable. + constructor(); + + /// Construct an HTTP Fields. + /// + /// The resulting `fields` is mutable. + /// + /// The list represents each key-value pair in the Fields. Keys + /// which have multiple values are represented by multiple entries in this + /// list with the same key. + /// + /// The tuple is a pair of the field key, represented as a string, and + /// Value, represented as a list of bytes. In a valid Fields, all keys + /// and values are valid UTF-8 strings. However, values are not always + /// well-formed, so they are represented as a raw list of bytes. + /// + /// An error result will be returned if any header or value was + /// syntactically invalid, or if a header was forbidden. + from-list: static func( + entries: list> + ) -> result; + + /// Get all of the values corresponding to a key. If the key is not present + /// in this `fields`, an empty list is returned. However, if the key is + /// present but empty, this is represented by a list with one or more + /// empty field-values present. + get: func(name: field-key) -> list; + + /// Returns `true` when the key is present in this `fields`. If the key is + /// syntactically invalid, `false` is returned. + has: func(name: field-key) -> bool; + + /// Set all of the values for a key. Clears any existing values for that + /// key, if they have been set. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + set: func(name: field-key, value: list) -> result<_, header-error>; + + /// Delete all values for a key. Does nothing if no values for the key + /// exist. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + delete: func(name: field-key) -> result<_, header-error>; + + /// Append a value for a key. Does not change or delete any existing + /// values for that key. + /// + /// Fails with `header-error.immutable` if the `fields` are immutable. + append: func(name: field-key, value: field-value) -> result<_, header-error>; + + /// Retrieve the full set of keys and values in the Fields. Like the + /// constructor, the list represents each key-value pair. + /// + /// The outer list represents each key-value pair in the Fields. Keys + /// which have multiple values are represented by multiple entries in this + /// list with the same key. + entries: func() -> list>; + + /// Make a deep copy of the Fields. Equivelant in behavior to calling the + /// `fields` constructor on the return value of `entries`. The resulting + /// `fields` is mutable. + clone: func() -> fields; + } + + /// Headers is an alias for Fields. + type headers = fields; + + /// Trailers is an alias for Fields. + type trailers = fields; + + /// Represents an incoming HTTP Request. + resource incoming-request { + + /// Returns the method of the incoming request. + method: func() -> method; + + /// Returns the path with query parameters from the request, as a string. + path-with-query: func() -> option; + + /// Returns the protocol scheme from the request. + scheme: func() -> option; + + /// Returns the authority from the request, if it was present. + authority: func() -> option; + + /// Get the `headers` associated with the request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// The `headers` returned are a child resource: it must be dropped before + /// the parent `incoming-request` is dropped. Dropping this + /// `incoming-request` before all children are dropped will trap. + headers: func() -> headers; + + /// Gives the `incoming-body` associated with this request. Will only + /// return success at most once, and subsequent calls will return error. + consume: func() -> result; + } + + /// Represents an outgoing HTTP Request. + resource outgoing-request { + + /// Construct a new `outgoing-request` with a default `method` of `GET`, and + /// `none` values for `path-with-query`, `scheme`, and `authority`. + /// + /// * `headers` is the HTTP Headers for the Request. + /// + /// It is possible to construct, or manipulate with the accessor functions + /// below, an `outgoing-request` with an invalid combination of `scheme` + /// and `authority`, or `headers` which are not permitted to be sent. + /// It is the obligation of the `outgoing-handler.handle` implementation + /// to reject invalid constructions of `outgoing-request`. + constructor( + headers: headers + ); + + /// Returns the resource corresponding to the outgoing Body for this + /// Request. + /// + /// Returns success on the first call: the `outgoing-body` resource for + /// this `outgoing-request` can be retrieved at most once. Subsequent + /// calls will return error. + body: func() -> result; + + /// Get the Method for the Request. + method: func() -> method; + /// Set the Method for the Request. Fails if the string present in a + /// `method.other` argument is not a syntactically valid method. + set-method: func(method: method) -> result; + + /// Get the combination of the HTTP Path and Query for the Request. + /// When `none`, this represents an empty Path and empty Query. + path-with-query: func() -> option; + /// Set the combination of the HTTP Path and Query for the Request. + /// When `none`, this represents an empty Path and empty Query. Fails is the + /// string given is not a syntactically valid path and query uri component. + set-path-with-query: func(path-with-query: option) -> result; + + /// Get the HTTP Related Scheme for the Request. When `none`, the + /// implementation may choose an appropriate default scheme. + scheme: func() -> option; + /// Set the HTTP Related Scheme for the Request. When `none`, the + /// implementation may choose an appropriate default scheme. Fails if the + /// string given is not a syntactically valid uri scheme. + set-scheme: func(scheme: option) -> result; + + /// Get the HTTP Authority for the Request. A value of `none` may be used + /// with Related Schemes which do not require an Authority. The HTTP and + /// HTTPS schemes always require an authority. + authority: func() -> option; + /// Set the HTTP Authority for the Request. A value of `none` may be used + /// with Related Schemes which do not require an Authority. The HTTP and + /// HTTPS schemes always require an authority. Fails if the string given is + /// not a syntactically valid uri authority. + set-authority: func(authority: option) -> result; + + /// Get the headers associated with the Request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `outgoing-request` is dropped, or its ownership is transfered to + /// another component by e.g. `outgoing-handler.handle`. + headers: func() -> headers; + } + + /// Parameters for making an HTTP Request. Each of these parameters is + /// currently an optional timeout applicable to the transport layer of the + /// HTTP protocol. + /// + /// These timeouts are separate from any the user may use to bound a + /// blocking call to `wasi:io/poll.poll`. + resource request-options { + /// Construct a default `request-options` value. + constructor(); + + /// The timeout for the initial connect to the HTTP Server. + connect-timeout: func() -> option; + + /// Set the timeout for the initial connect to the HTTP Server. An error + /// return value indicates that this timeout is not supported. + set-connect-timeout: func(duration: option) -> result; + + /// The timeout for receiving the first byte of the Response body. + first-byte-timeout: func() -> option; + + /// Set the timeout for receiving the first byte of the Response body. An + /// error return value indicates that this timeout is not supported. + set-first-byte-timeout: func(duration: option) -> result; + + /// The timeout for receiving subsequent chunks of bytes in the Response + /// body stream. + between-bytes-timeout: func() -> option; + + /// Set the timeout for receiving subsequent chunks of bytes in the Response + /// body stream. An error return value indicates that this timeout is not + /// supported. + set-between-bytes-timeout: func(duration: option) -> result; + } + + /// Represents the ability to send an HTTP Response. + /// + /// This resource is used by the `wasi:http/incoming-handler` interface to + /// allow a Response to be sent corresponding to the Request provided as the + /// other argument to `incoming-handler.handle`. + resource response-outparam { + + /// Set the value of the `response-outparam` to either send a response, + /// or indicate an error. + /// + /// This method consumes the `response-outparam` to ensure that it is + /// called at most once. If it is never called, the implementation + /// will respond with an error. + /// + /// The user may provide an `error` to `response` to allow the + /// implementation determine how to respond with an HTTP error response. + set: static func( + param: response-outparam, + response: result, + ); + } + + /// This type corresponds to the HTTP standard Status Code. + type status-code = u16; + + /// Represents an incoming HTTP Response. + resource incoming-response { + + /// Returns the status code from the incoming response. + status: func() -> status-code; + + /// Returns the headers from the incoming response. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `incoming-response` is dropped. + headers: func() -> headers; + + /// Returns the incoming body. May be called at most once. Returns error + /// if called additional times. + consume: func() -> result; + } + + /// Represents an incoming HTTP Request or Response's Body. + /// + /// A body has both its contents - a stream of bytes - and a (possibly + /// empty) set of trailers, indicating that the full contents of the + /// body have been received. This resource represents the contents as + /// an `input-stream` and the delivery of trailers as a `future-trailers`, + /// and ensures that the user of this interface may only be consuming either + /// the body contents or waiting on trailers at any given time. + resource incoming-body { + + /// Returns the contents of the body, as a stream of bytes. + /// + /// Returns success on first call: the stream representing the contents + /// can be retrieved at most once. Subsequent calls will return error. + /// + /// The returned `input-stream` resource is a child: it must be dropped + /// before the parent `incoming-body` is dropped, or consumed by + /// `incoming-body.finish`. + /// + /// This invariant ensures that the implementation can determine whether + /// the user is consuming the contents of the body, waiting on the + /// `future-trailers` to be ready, or neither. This allows for network + /// backpressure is to be applied when the user is consuming the body, + /// and for that backpressure to not inhibit delivery of the trailers if + /// the user does not read the entire body. + %stream: func() -> result; + + /// Takes ownership of `incoming-body`, and returns a `future-trailers`. + /// This function will trap if the `input-stream` child is still alive. + finish: static func(this: incoming-body) -> future-trailers; + } + + /// Represents a future which may eventaully return trailers, or an error. + /// + /// In the case that the incoming HTTP Request or Response did not have any + /// trailers, this future will resolve to the empty set of trailers once the + /// complete Request or Response body has been received. + resource future-trailers { + + /// Returns a pollable which becomes ready when either the trailers have + /// been received, or an error has occured. When this pollable is ready, + /// the `get` method will return `some`. + subscribe: func() -> pollable; + + /// Returns the contents of the trailers, or an error which occured, + /// once the future is ready. + /// + /// The outer `option` represents future readiness. Users can wait on this + /// `option` to become `some` using the `subscribe` method. + /// + /// The outer `result` is used to retrieve the trailers or error at most + /// once. It will be success on the first call in which the outer option + /// is `some`, and error on subsequent calls. + /// + /// The inner `result` represents that either the HTTP Request or Response + /// body, as well as any trailers, were received successfully, or that an + /// error occured receiving them. The optional `trailers` indicates whether + /// or not trailers were present in the body. + /// + /// When some `trailers` are returned by this method, the `trailers` + /// resource is immutable, and a child. Use of the `set`, `append`, or + /// `delete` methods will return an error, and the resource must be + /// dropped before the parent `future-trailers` is dropped. + get: func() -> option, error-code>>>; + } + + /// Represents an outgoing HTTP Response. + resource outgoing-response { + + /// Construct an `outgoing-response`, with a default `status-code` of `200`. + /// If a different `status-code` is needed, it must be set via the + /// `set-status-code` method. + /// + /// * `headers` is the HTTP Headers for the Response. + constructor(headers: headers); + + /// Get the HTTP Status Code for the Response. + status-code: func() -> status-code; + + /// Set the HTTP Status Code for the Response. Fails if the status-code + /// given is not a valid http status code. + set-status-code: func(status-code: status-code) -> result; + + /// Get the headers associated with the Request. + /// + /// The returned `headers` resource is immutable: `set`, `append`, and + /// `delete` operations will fail with `header-error.immutable`. + /// + /// This headers resource is a child: it must be dropped before the parent + /// `outgoing-request` is dropped, or its ownership is transfered to + /// another component by e.g. `outgoing-handler.handle`. + headers: func() -> headers; + + /// Returns the resource corresponding to the outgoing Body for this Response. + /// + /// Returns success on the first call: the `outgoing-body` resource for + /// this `outgoing-response` can be retrieved at most once. Subsequent + /// calls will return error. + body: func() -> result; + } + + /// Represents an outgoing HTTP Request or Response's Body. + /// + /// A body has both its contents - a stream of bytes - and a (possibly + /// empty) set of trailers, inducating the full contents of the body + /// have been sent. This resource represents the contents as an + /// `output-stream` child resource, and the completion of the body (with + /// optional trailers) with a static function that consumes the + /// `outgoing-body` resource, and ensures that the user of this interface + /// may not write to the body contents after the body has been finished. + /// + /// If the user code drops this resource, as opposed to calling the static + /// method `finish`, the implementation should treat the body as incomplete, + /// and that an error has occured. The implementation should propogate this + /// error to the HTTP protocol by whatever means it has available, + /// including: corrupting the body on the wire, aborting the associated + /// Request, or sending a late status code for the Response. + resource outgoing-body { + + /// Returns a stream for writing the body contents. + /// + /// The returned `output-stream` is a child resource: it must be dropped + /// before the parent `outgoing-body` resource is dropped (or finished), + /// otherwise the `outgoing-body` drop or `finish` will trap. + /// + /// Returns success on the first call: the `output-stream` resource for + /// this `outgoing-body` may be retrieved at most once. Subsequent calls + /// will return error. + write: func() -> result; + + /// Finalize an outgoing body, optionally providing trailers. This must be + /// called to signal that the response is complete. If the `outgoing-body` + /// is dropped without calling `outgoing-body.finalize`, the implementation + /// should treat the body as corrupted. + /// + /// Fails if the body's `outgoing-request` or `outgoing-response` was + /// constructed with a Content-Length header, and the contents written + /// to the body (via `write`) does not match the value given in the + /// Content-Length. + finish: static func( + this: outgoing-body, + trailers: option + ) -> result<_, error-code>; + } + + /// Represents a future which may eventaully return an incoming HTTP + /// Response, or an error. + /// + /// This resource is returned by the `wasi:http/outgoing-handler` interface to + /// provide the HTTP Response corresponding to the sent Request. + resource future-incoming-response { + /// Returns a pollable which becomes ready when either the Response has + /// been received, or an error has occured. When this pollable is ready, + /// the `get` method will return `some`. + subscribe: func() -> pollable; + + /// Returns the incoming HTTP Response, or an error, once one is ready. + /// + /// The outer `option` represents future readiness. Users can wait on this + /// `option` to become `some` using the `subscribe` method. + /// + /// The outer `result` is used to retrieve the response or error at most + /// once. It will be success on the first call in which the outer option + /// is `some`, and error on subsequent calls. + /// + /// The inner `result` represents that either the incoming HTTP Response + /// status and headers have recieved successfully, or that an error + /// occured. Errors may also occur while consuming the response body, + /// but those will be reported by the `incoming-body` and its + /// `output-stream` child. + get: func() -> option>>; + + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/io/error.wit b/examples/go/http-outgoing-server/wit/deps/io/error.wit new file mode 100644 index 000000000..22e5b6489 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/io/error.wit @@ -0,0 +1,34 @@ +package wasi:io@0.2.0; + + +interface error { + /// A resource which represents some error information. + /// + /// The only method provided by this resource is `to-debug-string`, + /// which provides some human-readable information about the error. + /// + /// In the `wasi:io` package, this resource is returned through the + /// `wasi:io/streams/stream-error` type. + /// + /// To provide more specific error information, other interfaces may + /// provide functions to further "downcast" this error into more specific + /// error information. For example, `error`s returned in streams derived + /// from filesystem types to be described using the filesystem's own + /// error-code type, using the function + /// `wasi:filesystem/types/filesystem-error-code`, which takes a parameter + /// `borrow` and returns + /// `option`. + /// + /// The set of functions which can "downcast" an `error` into a more + /// concrete type is open. + resource error { + /// Returns a string that is suitable to assist humans in debugging + /// this error. + /// + /// WARNING: The returned string should not be consumed mechanically! + /// It may change across platforms, hosts, or other implementation + /// details. Parsing this string is a major platform-compatibility + /// hazard. + to-debug-string: func() -> string; + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/io/poll.wit b/examples/go/http-outgoing-server/wit/deps/io/poll.wit new file mode 100644 index 000000000..ddc67f8b7 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/io/poll.wit @@ -0,0 +1,41 @@ +package wasi:io@0.2.0; + +/// A poll API intended to let users wait for I/O events on multiple handles +/// at once. +interface poll { + /// `pollable` represents a single I/O event which may be ready, or not. + resource pollable { + + /// Return the readiness of a pollable. This function never blocks. + /// + /// Returns `true` when the pollable is ready, and `false` otherwise. + ready: func() -> bool; + + /// `block` returns immediately if the pollable is ready, and otherwise + /// blocks until ready. + /// + /// This function is equivalent to calling `poll.poll` on a list + /// containing only this pollable. + block: func(); + } + + /// Poll for completion on a set of pollables. + /// + /// This function takes a list of pollables, which identify I/O sources of + /// interest, and waits until one or more of the events is ready for I/O. + /// + /// The result `list` contains one or more indices of handles in the + /// argument list that is ready for I/O. + /// + /// If the list contains more elements than can be indexed with a `u32` + /// value, this function traps. + /// + /// A timeout can be implemented by adding a pollable from the + /// wasi-clocks API to the list. + /// + /// This function does not return a `result`; polling in itself does not + /// do any I/O so it doesn't fail. If any of the I/O sources identified by + /// the pollables has an error, it is indicated by marking the source as + /// being reaedy for I/O. + poll: func(in: list>) -> list; +} diff --git a/examples/go/http-outgoing-server/wit/deps/io/streams.wit b/examples/go/http-outgoing-server/wit/deps/io/streams.wit new file mode 100644 index 000000000..6d2f871e3 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/io/streams.wit @@ -0,0 +1,262 @@ +package wasi:io@0.2.0; + +/// WASI I/O is an I/O abstraction API which is currently focused on providing +/// stream types. +/// +/// In the future, the component model is expected to add built-in stream types; +/// when it does, they are expected to subsume this API. +interface streams { + use error.{error}; + use poll.{pollable}; + + /// An error for input-stream and output-stream operations. + variant stream-error { + /// The last operation (a write or flush) failed before completion. + /// + /// More information is available in the `error` payload. + last-operation-failed(error), + /// The stream is closed: no more input will be accepted by the + /// stream. A closed output-stream will return this error on all + /// future operations. + closed + } + + /// An input bytestream. + /// + /// `input-stream`s are *non-blocking* to the extent practical on underlying + /// platforms. I/O operations always return promptly; if fewer bytes are + /// promptly available than requested, they return the number of bytes promptly + /// available, which could even be zero. To wait for data to be available, + /// use the `subscribe` function to obtain a `pollable` which can be polled + /// for using `wasi:io/poll`. + resource input-stream { + /// Perform a non-blocking read from the stream. + /// + /// When the source of a `read` is binary data, the bytes from the source + /// are returned verbatim. When the source of a `read` is known to the + /// implementation to be text, bytes containing the UTF-8 encoding of the + /// text are returned. + /// + /// This function returns a list of bytes containing the read data, + /// when successful. The returned list will contain up to `len` bytes; + /// it may return fewer than requested, but not more. The list is + /// empty when no bytes are available for reading at this time. The + /// pollable given by `subscribe` will be ready when more bytes are + /// available. + /// + /// This function fails with a `stream-error` when the operation + /// encounters an error, giving `last-operation-failed`, or when the + /// stream is closed, giving `closed`. + /// + /// When the caller gives a `len` of 0, it represents a request to + /// read 0 bytes. If the stream is still open, this call should + /// succeed and return an empty list, or otherwise fail with `closed`. + /// + /// The `len` parameter is a `u64`, which could represent a list of u8 which + /// is not possible to allocate in wasm32, or not desirable to allocate as + /// as a return value by the callee. The callee may return a list of bytes + /// less than `len` in size while more bytes are available for reading. + read: func( + /// The maximum number of bytes to read + len: u64 + ) -> result, stream-error>; + + /// Read bytes from a stream, after blocking until at least one byte can + /// be read. Except for blocking, behavior is identical to `read`. + blocking-read: func( + /// The maximum number of bytes to read + len: u64 + ) -> result, stream-error>; + + /// Skip bytes from a stream. Returns number of bytes skipped. + /// + /// Behaves identical to `read`, except instead of returning a list + /// of bytes, returns the number of bytes consumed from the stream. + skip: func( + /// The maximum number of bytes to skip. + len: u64, + ) -> result; + + /// Skip bytes from a stream, after blocking until at least one byte + /// can be skipped. Except for blocking behavior, identical to `skip`. + blocking-skip: func( + /// The maximum number of bytes to skip. + len: u64, + ) -> result; + + /// Create a `pollable` which will resolve once either the specified stream + /// has bytes available to read or the other end of the stream has been + /// closed. + /// The created `pollable` is a child resource of the `input-stream`. + /// Implementations may trap if the `input-stream` is dropped before + /// all derived `pollable`s created with this function are dropped. + subscribe: func() -> pollable; + } + + + /// An output bytestream. + /// + /// `output-stream`s are *non-blocking* to the extent practical on + /// underlying platforms. Except where specified otherwise, I/O operations also + /// always return promptly, after the number of bytes that can be written + /// promptly, which could even be zero. To wait for the stream to be ready to + /// accept data, the `subscribe` function to obtain a `pollable` which can be + /// polled for using `wasi:io/poll`. + resource output-stream { + /// Check readiness for writing. This function never blocks. + /// + /// Returns the number of bytes permitted for the next call to `write`, + /// or an error. Calling `write` with more bytes than this function has + /// permitted will trap. + /// + /// When this function returns 0 bytes, the `subscribe` pollable will + /// become ready when this function will report at least 1 byte, or an + /// error. + check-write: func() -> result; + + /// Perform a write. This function never blocks. + /// + /// When the destination of a `write` is binary data, the bytes from + /// `contents` are written verbatim. When the destination of a `write` is + /// known to the implementation to be text, the bytes of `contents` are + /// transcoded from UTF-8 into the encoding of the destination and then + /// written. + /// + /// Precondition: check-write gave permit of Ok(n) and contents has a + /// length of less than or equal to n. Otherwise, this function will trap. + /// + /// returns Err(closed) without writing if the stream has closed since + /// the last call to check-write provided a permit. + write: func( + contents: list + ) -> result<_, stream-error>; + + /// Perform a write of up to 4096 bytes, and then flush the stream. Block + /// until all of these operations are complete, or an error occurs. + /// + /// This is a convenience wrapper around the use of `check-write`, + /// `subscribe`, `write`, and `flush`, and is implemented with the + /// following pseudo-code: + /// + /// ```text + /// let pollable = this.subscribe(); + /// while !contents.is_empty() { + /// // Wait for the stream to become writable + /// pollable.block(); + /// let Ok(n) = this.check-write(); // eliding error handling + /// let len = min(n, contents.len()); + /// let (chunk, rest) = contents.split_at(len); + /// this.write(chunk ); // eliding error handling + /// contents = rest; + /// } + /// this.flush(); + /// // Wait for completion of `flush` + /// pollable.block(); + /// // Check for any errors that arose during `flush` + /// let _ = this.check-write(); // eliding error handling + /// ``` + blocking-write-and-flush: func( + contents: list + ) -> result<_, stream-error>; + + /// Request to flush buffered output. This function never blocks. + /// + /// This tells the output-stream that the caller intends any buffered + /// output to be flushed. the output which is expected to be flushed + /// is all that has been passed to `write` prior to this call. + /// + /// Upon calling this function, the `output-stream` will not accept any + /// writes (`check-write` will return `ok(0)`) until the flush has + /// completed. The `subscribe` pollable will become ready when the + /// flush has completed and the stream can accept more writes. + flush: func() -> result<_, stream-error>; + + /// Request to flush buffered output, and block until flush completes + /// and stream is ready for writing again. + blocking-flush: func() -> result<_, stream-error>; + + /// Create a `pollable` which will resolve once the output-stream + /// is ready for more writing, or an error has occured. When this + /// pollable is ready, `check-write` will return `ok(n)` with n>0, or an + /// error. + /// + /// If the stream is closed, this pollable is always ready immediately. + /// + /// The created `pollable` is a child resource of the `output-stream`. + /// Implementations may trap if the `output-stream` is dropped before + /// all derived `pollable`s created with this function are dropped. + subscribe: func() -> pollable; + + /// Write zeroes to a stream. + /// + /// This should be used precisely like `write` with the exact same + /// preconditions (must use check-write first), but instead of + /// passing a list of bytes, you simply pass the number of zero-bytes + /// that should be written. + write-zeroes: func( + /// The number of zero-bytes to write + len: u64 + ) -> result<_, stream-error>; + + /// Perform a write of up to 4096 zeroes, and then flush the stream. + /// Block until all of these operations are complete, or an error + /// occurs. + /// + /// This is a convenience wrapper around the use of `check-write`, + /// `subscribe`, `write-zeroes`, and `flush`, and is implemented with + /// the following pseudo-code: + /// + /// ```text + /// let pollable = this.subscribe(); + /// while num_zeroes != 0 { + /// // Wait for the stream to become writable + /// pollable.block(); + /// let Ok(n) = this.check-write(); // eliding error handling + /// let len = min(n, num_zeroes); + /// this.write-zeroes(len); // eliding error handling + /// num_zeroes -= len; + /// } + /// this.flush(); + /// // Wait for completion of `flush` + /// pollable.block(); + /// // Check for any errors that arose during `flush` + /// let _ = this.check-write(); // eliding error handling + /// ``` + blocking-write-zeroes-and-flush: func( + /// The number of zero-bytes to write + len: u64 + ) -> result<_, stream-error>; + + /// Read from one stream and write to another. + /// + /// The behavior of splice is equivelant to: + /// 1. calling `check-write` on the `output-stream` + /// 2. calling `read` on the `input-stream` with the smaller of the + /// `check-write` permitted length and the `len` provided to `splice` + /// 3. calling `write` on the `output-stream` with that read data. + /// + /// Any error reported by the call to `check-write`, `read`, or + /// `write` ends the splice and reports that error. + /// + /// This function returns the number of bytes transferred; it may be less + /// than `len`. + splice: func( + /// The stream to read from + src: borrow, + /// The number of bytes to splice + len: u64, + ) -> result; + + /// Read from one stream and write to another, with blocking. + /// + /// This is similar to `splice`, except that it blocks until the + /// `output-stream` is ready for writing, and the `input-stream` + /// is ready for reading, before performing the `splice`. + blocking-splice: func( + /// The stream to read from + src: borrow, + /// The number of bytes to splice + len: u64, + ) -> result; + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/io/world.wit b/examples/go/http-outgoing-server/wit/deps/io/world.wit new file mode 100644 index 000000000..5f0b43fe5 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/io/world.wit @@ -0,0 +1,6 @@ +package wasi:io@0.2.0; + +world imports { + import streams; + import poll; +} diff --git a/examples/go/http-outgoing-server/wit/deps/random/insecure-seed.wit b/examples/go/http-outgoing-server/wit/deps/random/insecure-seed.wit new file mode 100644 index 000000000..47210ac6b --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/random/insecure-seed.wit @@ -0,0 +1,25 @@ +package wasi:random@0.2.0; +/// The insecure-seed interface for seeding hash-map DoS resistance. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface insecure-seed { + /// Return a 128-bit value that may contain a pseudo-random value. + /// + /// The returned value is not required to be computed from a CSPRNG, and may + /// even be entirely deterministic. Host implementations are encouraged to + /// provide pseudo-random values to any program exposed to + /// attacker-controlled content, to enable DoS protection built into many + /// languages' hash-map implementations. + /// + /// This function is intended to only be called once, by a source language + /// to initialize Denial Of Service (DoS) protection in its hash-map + /// implementation. + /// + /// # Expected future evolution + /// + /// This will likely be changed to a value import, to prevent it from being + /// called multiple times and potentially used for purposes other than DoS + /// protection. + insecure-seed: func() -> tuple; +} diff --git a/examples/go/http-outgoing-server/wit/deps/random/insecure.wit b/examples/go/http-outgoing-server/wit/deps/random/insecure.wit new file mode 100644 index 000000000..c58f4ee85 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/random/insecure.wit @@ -0,0 +1,22 @@ +package wasi:random@0.2.0; +/// The insecure interface for insecure pseudo-random numbers. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface insecure { + /// Return `len` insecure pseudo-random bytes. + /// + /// This function is not cryptographically secure. Do not use it for + /// anything related to security. + /// + /// There are no requirements on the values of the returned bytes, however + /// implementations are encouraged to return evenly distributed values with + /// a long period. + get-insecure-random-bytes: func(len: u64) -> list; + + /// Return an insecure pseudo-random `u64` value. + /// + /// This function returns the same type of pseudo-random data as + /// `get-insecure-random-bytes`, represented as a `u64`. + get-insecure-random-u64: func() -> u64; +} diff --git a/examples/go/http-outgoing-server/wit/deps/random/random.wit b/examples/go/http-outgoing-server/wit/deps/random/random.wit new file mode 100644 index 000000000..0c017f093 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/random/random.wit @@ -0,0 +1,26 @@ +package wasi:random@0.2.0; +/// WASI Random is a random data API. +/// +/// It is intended to be portable at least between Unix-family platforms and +/// Windows. +interface random { + /// Return `len` cryptographically-secure random or pseudo-random bytes. + /// + /// This function must produce data at least as cryptographically secure and + /// fast as an adequately seeded cryptographically-secure pseudo-random + /// number generator (CSPRNG). It must not block, from the perspective of + /// the calling program, under any circumstances, including on the first + /// request and on requests for numbers of bytes. The returned data must + /// always be unpredictable. + /// + /// This function must always return fresh data. Deterministic environments + /// must omit this function, rather than implementing it with deterministic + /// data. + get-random-bytes: func(len: u64) -> list; + + /// Return a cryptographically-secure random or pseudo-random `u64` value. + /// + /// This function returns the same type of data as `get-random-bytes`, + /// represented as a `u64`. + get-random-u64: func() -> u64; +} diff --git a/examples/go/http-outgoing-server/wit/deps/random/world.wit b/examples/go/http-outgoing-server/wit/deps/random/world.wit new file mode 100644 index 000000000..3da34914a --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/random/world.wit @@ -0,0 +1,7 @@ +package wasi:random@0.2.0; + +world imports { + import random; + import insecure; + import insecure-seed; +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/instance-network.wit b/examples/go/http-outgoing-server/wit/deps/sockets/instance-network.wit new file mode 100644 index 000000000..e455d0ff7 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/instance-network.wit @@ -0,0 +1,9 @@ + +/// This interface provides a value-export of the default network handle.. +interface instance-network { + use network.{network}; + + /// Get a handle to the default network. + instance-network: func() -> network; + +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/ip-name-lookup.wit b/examples/go/http-outgoing-server/wit/deps/sockets/ip-name-lookup.wit new file mode 100644 index 000000000..8e639ec59 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/ip-name-lookup.wit @@ -0,0 +1,51 @@ + +interface ip-name-lookup { + use wasi:io/poll@0.2.0.{pollable}; + use network.{network, error-code, ip-address}; + + + /// Resolve an internet host name to a list of IP addresses. + /// + /// Unicode domain names are automatically converted to ASCII using IDNA encoding. + /// If the input is an IP address string, the address is parsed and returned + /// as-is without making any external requests. + /// + /// See the wasi-socket proposal README.md for a comparison with getaddrinfo. + /// + /// This function never blocks. It either immediately fails or immediately + /// returns successfully with a `resolve-address-stream` that can be used + /// to (asynchronously) fetch the results. + /// + /// # Typical errors + /// - `invalid-argument`: `name` is a syntactically invalid domain name or IP address. + /// + /// # References: + /// - + /// - + /// - + /// - + resolve-addresses: func(network: borrow, name: string) -> result; + + resource resolve-address-stream { + /// Returns the next address from the resolver. + /// + /// This function should be called multiple times. On each call, it will + /// return the next address in connection order preference. If all + /// addresses have been exhausted, this function returns `none`. + /// + /// This function never returns IPv4-mapped IPv6 addresses. + /// + /// # Typical errors + /// - `name-unresolvable`: Name does not exist or has no suitable associated IP addresses. (EAI_NONAME, EAI_NODATA, EAI_ADDRFAMILY) + /// - `temporary-resolver-failure`: A temporary failure in name resolution occurred. (EAI_AGAIN) + /// - `permanent-resolver-failure`: A permanent failure in name resolution occurred. (EAI_FAIL) + /// - `would-block`: A result is not available yet. (EWOULDBLOCK, EAGAIN) + resolve-next-address: func() -> result, error-code>; + + /// Create a `pollable` which will resolve once the stream is ready for I/O. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/network.wit b/examples/go/http-outgoing-server/wit/deps/sockets/network.wit new file mode 100644 index 000000000..9cadf0650 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/network.wit @@ -0,0 +1,145 @@ + +interface network { + /// An opaque resource that represents access to (a subset of) the network. + /// This enables context-based security for networking. + /// There is no need for this to map 1:1 to a physical network interface. + resource network; + + /// Error codes. + /// + /// In theory, every API can return any error code. + /// In practice, API's typically only return the errors documented per API + /// combined with a couple of errors that are always possible: + /// - `unknown` + /// - `access-denied` + /// - `not-supported` + /// - `out-of-memory` + /// - `concurrency-conflict` + /// + /// See each individual API for what the POSIX equivalents are. They sometimes differ per API. + enum error-code { + /// Unknown error + unknown, + + /// Access denied. + /// + /// POSIX equivalent: EACCES, EPERM + access-denied, + + /// The operation is not supported. + /// + /// POSIX equivalent: EOPNOTSUPP + not-supported, + + /// One of the arguments is invalid. + /// + /// POSIX equivalent: EINVAL + invalid-argument, + + /// Not enough memory to complete the operation. + /// + /// POSIX equivalent: ENOMEM, ENOBUFS, EAI_MEMORY + out-of-memory, + + /// The operation timed out before it could finish completely. + timeout, + + /// This operation is incompatible with another asynchronous operation that is already in progress. + /// + /// POSIX equivalent: EALREADY + concurrency-conflict, + + /// Trying to finish an asynchronous operation that: + /// - has not been started yet, or: + /// - was already finished by a previous `finish-*` call. + /// + /// Note: this is scheduled to be removed when `future`s are natively supported. + not-in-progress, + + /// The operation has been aborted because it could not be completed immediately. + /// + /// Note: this is scheduled to be removed when `future`s are natively supported. + would-block, + + + /// The operation is not valid in the socket's current state. + invalid-state, + + /// A new socket resource could not be created because of a system limit. + new-socket-limit, + + /// A bind operation failed because the provided address is not an address that the `network` can bind to. + address-not-bindable, + + /// A bind operation failed because the provided address is already in use or because there are no ephemeral ports available. + address-in-use, + + /// The remote address is not reachable + remote-unreachable, + + + /// The TCP connection was forcefully rejected + connection-refused, + + /// The TCP connection was reset. + connection-reset, + + /// A TCP connection was aborted. + connection-aborted, + + + /// The size of a datagram sent to a UDP socket exceeded the maximum + /// supported size. + datagram-too-large, + + + /// Name does not exist or has no suitable associated IP addresses. + name-unresolvable, + + /// A temporary failure in name resolution occurred. + temporary-resolver-failure, + + /// A permanent failure in name resolution occurred. + permanent-resolver-failure, + } + + enum ip-address-family { + /// Similar to `AF_INET` in POSIX. + ipv4, + + /// Similar to `AF_INET6` in POSIX. + ipv6, + } + + type ipv4-address = tuple; + type ipv6-address = tuple; + + variant ip-address { + ipv4(ipv4-address), + ipv6(ipv6-address), + } + + record ipv4-socket-address { + /// sin_port + port: u16, + /// sin_addr + address: ipv4-address, + } + + record ipv6-socket-address { + /// sin6_port + port: u16, + /// sin6_flowinfo + flow-info: u32, + /// sin6_addr + address: ipv6-address, + /// sin6_scope_id + scope-id: u32, + } + + variant ip-socket-address { + ipv4(ipv4-socket-address), + ipv6(ipv6-socket-address), + } + +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/tcp-create-socket.wit b/examples/go/http-outgoing-server/wit/deps/sockets/tcp-create-socket.wit new file mode 100644 index 000000000..c7ddf1f22 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/tcp-create-socket.wit @@ -0,0 +1,27 @@ + +interface tcp-create-socket { + use network.{network, error-code, ip-address-family}; + use tcp.{tcp-socket}; + + /// Create a new TCP socket. + /// + /// Similar to `socket(AF_INET or AF_INET6, SOCK_STREAM, IPPROTO_TCP)` in POSIX. + /// On IPv6 sockets, IPV6_V6ONLY is enabled by default and can't be configured otherwise. + /// + /// This function does not require a network capability handle. This is considered to be safe because + /// at time of creation, the socket is not bound to any `network` yet. Up to the moment `bind`/`connect` + /// is called, the socket is effectively an in-memory configuration object, unable to communicate with the outside world. + /// + /// All sockets are non-blocking. Use the wasi-poll interface to block on asynchronous operations. + /// + /// # Typical errors + /// - `not-supported`: The specified `address-family` is not supported. (EAFNOSUPPORT) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References + /// - + /// - + /// - + /// - + create-tcp-socket: func(address-family: ip-address-family) -> result; +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/tcp.wit b/examples/go/http-outgoing-server/wit/deps/sockets/tcp.wit new file mode 100644 index 000000000..5902b9ee0 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/tcp.wit @@ -0,0 +1,353 @@ + +interface tcp { + use wasi:io/streams@0.2.0.{input-stream, output-stream}; + use wasi:io/poll@0.2.0.{pollable}; + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + use network.{network, error-code, ip-socket-address, ip-address-family}; + + enum shutdown-type { + /// Similar to `SHUT_RD` in POSIX. + receive, + + /// Similar to `SHUT_WR` in POSIX. + send, + + /// Similar to `SHUT_RDWR` in POSIX. + both, + } + + /// A TCP socket resource. + /// + /// The socket can be in one of the following states: + /// - `unbound` + /// - `bind-in-progress` + /// - `bound` (See note below) + /// - `listen-in-progress` + /// - `listening` + /// - `connect-in-progress` + /// - `connected` + /// - `closed` + /// See + /// for a more information. + /// + /// Note: Except where explicitly mentioned, whenever this documentation uses + /// the term "bound" without backticks it actually means: in the `bound` state *or higher*. + /// (i.e. `bound`, `listen-in-progress`, `listening`, `connect-in-progress` or `connected`) + /// + /// In addition to the general error codes documented on the + /// `network::error-code` type, TCP socket methods may always return + /// `error(invalid-state)` when in the `closed` state. + resource tcp-socket { + /// Bind the socket to a specific network on the provided IP address and port. + /// + /// If the IP address is zero (`0.0.0.0` in IPv4, `::` in IPv6), it is left to the implementation to decide which + /// network interface(s) to bind to. + /// If the TCP/UDP port is zero, the socket will be bound to a random free port. + /// + /// Bind can be attempted multiple times on the same socket, even with + /// different arguments on each iteration. But never concurrently and + /// only as long as the previous bind failed. Once a bind succeeds, the + /// binding can't be changed anymore. + /// + /// # Typical errors + /// - `invalid-argument`: The `local-address` has the wrong address family. (EAFNOSUPPORT, EFAULT on Windows) + /// - `invalid-argument`: `local-address` is not a unicast address. (EINVAL) + /// - `invalid-argument`: `local-address` is an IPv4-mapped IPv6 address. (EINVAL) + /// - `invalid-state`: The socket is already bound. (EINVAL) + /// - `address-in-use`: No ephemeral ports available. (EADDRINUSE, ENOBUFS on Windows) + /// - `address-in-use`: Address is already in use. (EADDRINUSE) + /// - `address-not-bindable`: `local-address` is not an address that the `network` can bind to. (EADDRNOTAVAIL) + /// - `not-in-progress`: A `bind` operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// When binding to a non-zero port, this bind operation shouldn't be affected by the TIME_WAIT + /// state of a recently closed socket on the same local address. In practice this means that the SO_REUSEADDR + /// socket option should be set implicitly on all platforms, except on Windows where this is the default behavior + /// and SO_REUSEADDR performs something different entirely. + /// + /// Unlike in POSIX, in WASI the bind operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `bind` as part of either `start-bind` or `finish-bind`. + /// + /// # References + /// - + /// - + /// - + /// - + start-bind: func(network: borrow, local-address: ip-socket-address) -> result<_, error-code>; + finish-bind: func() -> result<_, error-code>; + + /// Connect to a remote endpoint. + /// + /// On success: + /// - the socket is transitioned into the `connection` state. + /// - a pair of streams is returned that can be used to read & write to the connection + /// + /// After a failed connection attempt, the socket will be in the `closed` + /// state and the only valid action left is to `drop` the socket. A single + /// socket can not be used to connect more than once. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: `remote-address` is not a unicast address. (EINVAL, ENETUNREACH on Linux, EAFNOSUPPORT on MacOS) + /// - `invalid-argument`: `remote-address` is an IPv4-mapped IPv6 address. (EINVAL, EADDRNOTAVAIL on Illumos) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EADDRNOTAVAIL on Windows) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EADDRNOTAVAIL on Windows) + /// - `invalid-argument`: The socket is already attached to a different network. The `network` passed to `connect` must be identical to the one passed to `bind`. + /// - `invalid-state`: The socket is already in the `connected` state. (EISCONN) + /// - `invalid-state`: The socket is already in the `listening` state. (EOPNOTSUPP, EINVAL on Windows) + /// - `timeout`: Connection timed out. (ETIMEDOUT) + /// - `connection-refused`: The connection was forcefully rejected. (ECONNREFUSED) + /// - `connection-reset`: The connection was reset. (ECONNRESET) + /// - `connection-aborted`: The connection was aborted. (ECONNABORTED) + /// - `remote-unreachable`: The remote address is not reachable. (EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE, EADDRNOTAVAIL on Linux, EAGAIN on BSD) + /// - `not-in-progress`: A connect operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// The POSIX equivalent of `start-connect` is the regular `connect` syscall. + /// Because all WASI sockets are non-blocking this is expected to return + /// EINPROGRESS, which should be translated to `ok()` in WASI. + /// + /// The POSIX equivalent of `finish-connect` is a `poll` for event `POLLOUT` + /// with a timeout of 0 on the socket descriptor. Followed by a check for + /// the `SO_ERROR` socket option, in case the poll signaled readiness. + /// + /// # References + /// - + /// - + /// - + /// - + start-connect: func(network: borrow, remote-address: ip-socket-address) -> result<_, error-code>; + finish-connect: func() -> result, error-code>; + + /// Start listening for new connections. + /// + /// Transitions the socket into the `listening` state. + /// + /// Unlike POSIX, the socket must already be explicitly bound. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. (EDESTADDRREQ) + /// - `invalid-state`: The socket is already in the `connected` state. (EISCONN, EINVAL on BSD) + /// - `invalid-state`: The socket is already in the `listening` state. + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE) + /// - `not-in-progress`: A listen operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// Unlike in POSIX, in WASI the listen operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `listen` as part of either `start-listen` or `finish-listen`. + /// + /// # References + /// - + /// - + /// - + /// - + start-listen: func() -> result<_, error-code>; + finish-listen: func() -> result<_, error-code>; + + /// Accept a new client socket. + /// + /// The returned socket is bound and in the `connected` state. The following properties are inherited from the listener socket: + /// - `address-family` + /// - `keep-alive-enabled` + /// - `keep-alive-idle-time` + /// - `keep-alive-interval` + /// - `keep-alive-count` + /// - `hop-limit` + /// - `receive-buffer-size` + /// - `send-buffer-size` + /// + /// On success, this function returns the newly accepted client socket along with + /// a pair of streams that can be used to read & write to the connection. + /// + /// # Typical errors + /// - `invalid-state`: Socket is not in the `listening` state. (EINVAL) + /// - `would-block`: No pending connections at the moment. (EWOULDBLOCK, EAGAIN) + /// - `connection-aborted`: An incoming connection was pending, but was terminated by the client before this listener could accept it. (ECONNABORTED) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References + /// - + /// - + /// - + /// - + accept: func() -> result, error-code>; + + /// Get the bound local address. + /// + /// POSIX mentions: + /// > If the socket has not been bound to a local name, the value + /// > stored in the object pointed to by `address` is unspecified. + /// + /// WASI is stricter and requires `local-address` to return `invalid-state` when the socket hasn't been bound yet. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. + /// + /// # References + /// - + /// - + /// - + /// - + local-address: func() -> result; + + /// Get the remote address. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not connected to a remote address. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + remote-address: func() -> result; + + /// Whether the socket is in the `listening` state. + /// + /// Equivalent to the SO_ACCEPTCONN socket option. + is-listening: func() -> bool; + + /// Whether this is a IPv4 or IPv6 socket. + /// + /// Equivalent to the SO_DOMAIN socket option. + address-family: func() -> ip-address-family; + + /// Hints the desired listen queue size. Implementations are free to ignore this. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// + /// # Typical errors + /// - `not-supported`: (set) The platform does not support changing the backlog size after the initial listen. + /// - `invalid-argument`: (set) The provided value was 0. + /// - `invalid-state`: (set) The socket is in the `connect-in-progress` or `connected` state. + set-listen-backlog-size: func(value: u64) -> result<_, error-code>; + + /// Enables or disables keepalive. + /// + /// The keepalive behavior can be adjusted using: + /// - `keep-alive-idle-time` + /// - `keep-alive-interval` + /// - `keep-alive-count` + /// These properties can be configured while `keep-alive-enabled` is false, but only come into effect when `keep-alive-enabled` is true. + /// + /// Equivalent to the SO_KEEPALIVE socket option. + keep-alive-enabled: func() -> result; + set-keep-alive-enabled: func(value: bool) -> result<_, error-code>; + + /// Amount of time the connection has to be idle before TCP starts sending keepalive packets. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPIDLE socket option. (TCP_KEEPALIVE on MacOS) + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-idle-time: func() -> result; + set-keep-alive-idle-time: func(value: duration) -> result<_, error-code>; + + /// The time between keepalive packets. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPINTVL socket option. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-interval: func() -> result; + set-keep-alive-interval: func(value: duration) -> result<_, error-code>; + + /// The maximum amount of keepalive packets TCP should send before aborting the connection. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the TCP_KEEPCNT socket option. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + keep-alive-count: func() -> result; + set-keep-alive-count: func(value: u32) -> result<_, error-code>; + + /// Equivalent to the IP_TTL & IPV6_UNICAST_HOPS socket options. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The TTL value must be 1 or higher. + hop-limit: func() -> result; + set-hop-limit: func(value: u8) -> result<_, error-code>; + + /// The kernel buffer space reserved for sends/receives on this socket. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the SO_RCVBUF and SO_SNDBUF socket options. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + receive-buffer-size: func() -> result; + set-receive-buffer-size: func(value: u64) -> result<_, error-code>; + send-buffer-size: func() -> result; + set-send-buffer-size: func(value: u64) -> result<_, error-code>; + + /// Create a `pollable` which can be used to poll for, or block on, + /// completion of any of the asynchronous operations of this socket. + /// + /// When `finish-bind`, `finish-listen`, `finish-connect` or `accept` + /// return `error(would-block)`, this pollable can be used to wait for + /// their success or failure, after which the method can be retried. + /// + /// The pollable is not limited to the async operation that happens to be + /// in progress at the time of calling `subscribe` (if any). Theoretically, + /// `subscribe` only has to be called once per socket and can then be + /// (re)used for the remainder of the socket's lifetime. + /// + /// See + /// for a more information. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + + /// Initiate a graceful shutdown. + /// + /// - `receive`: The socket is not expecting to receive any data from + /// the peer. The `input-stream` associated with this socket will be + /// closed. Any data still in the receive queue at time of calling + /// this method will be discarded. + /// - `send`: The socket has no more data to send to the peer. The `output-stream` + /// associated with this socket will be closed and a FIN packet will be sent. + /// - `both`: Same effect as `receive` & `send` combined. + /// + /// This function is idempotent. Shutting a down a direction more than once + /// has no effect and returns `ok`. + /// + /// The shutdown function does not close (drop) the socket. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not in the `connected` state. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + shutdown: func(shutdown-type: shutdown-type) -> result<_, error-code>; + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/udp-create-socket.wit b/examples/go/http-outgoing-server/wit/deps/sockets/udp-create-socket.wit new file mode 100644 index 000000000..0482d1fe7 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/udp-create-socket.wit @@ -0,0 +1,27 @@ + +interface udp-create-socket { + use network.{network, error-code, ip-address-family}; + use udp.{udp-socket}; + + /// Create a new UDP socket. + /// + /// Similar to `socket(AF_INET or AF_INET6, SOCK_DGRAM, IPPROTO_UDP)` in POSIX. + /// On IPv6 sockets, IPV6_V6ONLY is enabled by default and can't be configured otherwise. + /// + /// This function does not require a network capability handle. This is considered to be safe because + /// at time of creation, the socket is not bound to any `network` yet. Up to the moment `bind` is called, + /// the socket is effectively an in-memory configuration object, unable to communicate with the outside world. + /// + /// All sockets are non-blocking. Use the wasi-poll interface to block on asynchronous operations. + /// + /// # Typical errors + /// - `not-supported`: The specified `address-family` is not supported. (EAFNOSUPPORT) + /// - `new-socket-limit`: The new socket resource could not be created because of a system limit. (EMFILE, ENFILE) + /// + /// # References: + /// - + /// - + /// - + /// - + create-udp-socket: func(address-family: ip-address-family) -> result; +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/udp.wit b/examples/go/http-outgoing-server/wit/deps/sockets/udp.wit new file mode 100644 index 000000000..d987a0a90 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/udp.wit @@ -0,0 +1,266 @@ + +interface udp { + use wasi:io/poll@0.2.0.{pollable}; + use network.{network, error-code, ip-socket-address, ip-address-family}; + + /// A received datagram. + record incoming-datagram { + /// The payload. + /// + /// Theoretical max size: ~64 KiB. In practice, typically less than 1500 bytes. + data: list, + + /// The source address. + /// + /// This field is guaranteed to match the remote address the stream was initialized with, if any. + /// + /// Equivalent to the `src_addr` out parameter of `recvfrom`. + remote-address: ip-socket-address, + } + + /// A datagram to be sent out. + record outgoing-datagram { + /// The payload. + data: list, + + /// The destination address. + /// + /// The requirements on this field depend on how the stream was initialized: + /// - with a remote address: this field must be None or match the stream's remote address exactly. + /// - without a remote address: this field is required. + /// + /// If this value is None, the send operation is equivalent to `send` in POSIX. Otherwise it is equivalent to `sendto`. + remote-address: option, + } + + + + /// A UDP socket handle. + resource udp-socket { + /// Bind the socket to a specific network on the provided IP address and port. + /// + /// If the IP address is zero (`0.0.0.0` in IPv4, `::` in IPv6), it is left to the implementation to decide which + /// network interface(s) to bind to. + /// If the port is zero, the socket will be bound to a random free port. + /// + /// # Typical errors + /// - `invalid-argument`: The `local-address` has the wrong address family. (EAFNOSUPPORT, EFAULT on Windows) + /// - `invalid-state`: The socket is already bound. (EINVAL) + /// - `address-in-use`: No ephemeral ports available. (EADDRINUSE, ENOBUFS on Windows) + /// - `address-in-use`: Address is already in use. (EADDRINUSE) + /// - `address-not-bindable`: `local-address` is not an address that the `network` can bind to. (EADDRNOTAVAIL) + /// - `not-in-progress`: A `bind` operation is not in progress. + /// - `would-block`: Can't finish the operation, it is still in progress. (EWOULDBLOCK, EAGAIN) + /// + /// # Implementors note + /// Unlike in POSIX, in WASI the bind operation is async. This enables + /// interactive WASI hosts to inject permission prompts. Runtimes that + /// don't want to make use of this ability can simply call the native + /// `bind` as part of either `start-bind` or `finish-bind`. + /// + /// # References + /// - + /// - + /// - + /// - + start-bind: func(network: borrow, local-address: ip-socket-address) -> result<_, error-code>; + finish-bind: func() -> result<_, error-code>; + + /// Set up inbound & outbound communication channels, optionally to a specific peer. + /// + /// This function only changes the local socket configuration and does not generate any network traffic. + /// On success, the `remote-address` of the socket is updated. The `local-address` may be updated as well, + /// based on the best network path to `remote-address`. + /// + /// When a `remote-address` is provided, the returned streams are limited to communicating with that specific peer: + /// - `send` can only be used to send to this destination. + /// - `receive` will only return datagrams sent from the provided `remote-address`. + /// + /// This method may be called multiple times on the same socket to change its association, but + /// only the most recently returned pair of streams will be operational. Implementations may trap if + /// the streams returned by a previous invocation haven't been dropped yet before calling `stream` again. + /// + /// The POSIX equivalent in pseudo-code is: + /// ```text + /// if (was previously connected) { + /// connect(s, AF_UNSPEC) + /// } + /// if (remote_address is Some) { + /// connect(s, remote_address) + /// } + /// ``` + /// + /// Unlike in POSIX, the socket must already be explicitly bound. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-state`: The socket is not bound. + /// - `address-in-use`: Tried to perform an implicit bind, but there were no ephemeral ports available. (EADDRINUSE, EADDRNOTAVAIL on Linux, EAGAIN on BSD) + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// + /// # References + /// - + /// - + /// - + /// - + %stream: func(remote-address: option) -> result, error-code>; + + /// Get the current bound address. + /// + /// POSIX mentions: + /// > If the socket has not been bound to a local name, the value + /// > stored in the object pointed to by `address` is unspecified. + /// + /// WASI is stricter and requires `local-address` to return `invalid-state` when the socket hasn't been bound yet. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not bound to any local address. + /// + /// # References + /// - + /// - + /// - + /// - + local-address: func() -> result; + + /// Get the address the socket is currently streaming to. + /// + /// # Typical errors + /// - `invalid-state`: The socket is not streaming to a specific remote address. (ENOTCONN) + /// + /// # References + /// - + /// - + /// - + /// - + remote-address: func() -> result; + + /// Whether this is a IPv4 or IPv6 socket. + /// + /// Equivalent to the SO_DOMAIN socket option. + address-family: func() -> ip-address-family; + + /// Equivalent to the IP_TTL & IPV6_UNICAST_HOPS socket options. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The TTL value must be 1 or higher. + unicast-hop-limit: func() -> result; + set-unicast-hop-limit: func(value: u8) -> result<_, error-code>; + + /// The kernel buffer space reserved for sends/receives on this socket. + /// + /// If the provided value is 0, an `invalid-argument` error is returned. + /// Any other value will never cause an error, but it might be silently clamped and/or rounded. + /// I.e. after setting a value, reading the same setting back may return a different value. + /// + /// Equivalent to the SO_RCVBUF and SO_SNDBUF socket options. + /// + /// # Typical errors + /// - `invalid-argument`: (set) The provided value was 0. + receive-buffer-size: func() -> result; + set-receive-buffer-size: func(value: u64) -> result<_, error-code>; + send-buffer-size: func() -> result; + set-send-buffer-size: func(value: u64) -> result<_, error-code>; + + /// Create a `pollable` which will resolve once the socket is ready for I/O. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } + + resource incoming-datagram-stream { + /// Receive messages on the socket. + /// + /// This function attempts to receive up to `max-results` datagrams on the socket without blocking. + /// The returned list may contain fewer elements than requested, but never more. + /// + /// This function returns successfully with an empty list when either: + /// - `max-results` is 0, or: + /// - `max-results` is greater than 0, but no results are immediately available. + /// This function never returns `error(would-block)`. + /// + /// # Typical errors + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET on Windows, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// + /// # References + /// - + /// - + /// - + /// - + /// - + /// - + /// - + /// - + receive: func(max-results: u64) -> result, error-code>; + + /// Create a `pollable` which will resolve once the stream is ready to receive again. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } + + resource outgoing-datagram-stream { + /// Check readiness for sending. This function never blocks. + /// + /// Returns the number of datagrams permitted for the next call to `send`, + /// or an error. Calling `send` with more datagrams than this function has + /// permitted will trap. + /// + /// When this function returns ok(0), the `subscribe` pollable will + /// become ready when this function will report at least ok(1), or an + /// error. + /// + /// Never returns `would-block`. + check-send: func() -> result; + + /// Send messages on the socket. + /// + /// This function attempts to send all provided `datagrams` on the socket without blocking and + /// returns how many messages were actually sent (or queued for sending). This function never + /// returns `error(would-block)`. If none of the datagrams were able to be sent, `ok(0)` is returned. + /// + /// This function semantically behaves the same as iterating the `datagrams` list and sequentially + /// sending each individual datagram until either the end of the list has been reached or the first error occurred. + /// If at least one datagram has been sent successfully, this function never returns an error. + /// + /// If the input list is empty, the function returns `ok(0)`. + /// + /// Each call to `send` must be permitted by a preceding `check-send`. Implementations must trap if + /// either `check-send` was not called or `datagrams` contains more items than `check-send` permitted. + /// + /// # Typical errors + /// - `invalid-argument`: The `remote-address` has the wrong address family. (EAFNOSUPPORT) + /// - `invalid-argument`: The IP address in `remote-address` is set to INADDR_ANY (`0.0.0.0` / `::`). (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The port in `remote-address` is set to 0. (EDESTADDRREQ, EADDRNOTAVAIL) + /// - `invalid-argument`: The socket is in "connected" mode and `remote-address` is `some` value that does not match the address passed to `stream`. (EISCONN) + /// - `invalid-argument`: The socket is not "connected" and no value for `remote-address` was provided. (EDESTADDRREQ) + /// - `remote-unreachable`: The remote address is not reachable. (ECONNRESET, ENETRESET on Windows, EHOSTUNREACH, EHOSTDOWN, ENETUNREACH, ENETDOWN, ENONET) + /// - `connection-refused`: The connection was refused. (ECONNREFUSED) + /// - `datagram-too-large`: The datagram is too large. (EMSGSIZE) + /// + /// # References + /// - + /// - + /// - + /// - + /// - + /// - + /// - + /// - + send: func(datagrams: list) -> result; + + /// Create a `pollable` which will resolve once the stream is ready to send again. + /// + /// Note: this function is here for WASI Preview2 only. + /// It's planned to be removed when `future` is natively supported in Preview3. + subscribe: func() -> pollable; + } +} diff --git a/examples/go/http-outgoing-server/wit/deps/sockets/world.wit b/examples/go/http-outgoing-server/wit/deps/sockets/world.wit new file mode 100644 index 000000000..f8bb92ae0 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/sockets/world.wit @@ -0,0 +1,11 @@ +package wasi:sockets@0.2.0; + +world imports { + import instance-network; + import network; + import udp; + import udp-create-socket; + import tcp; + import tcp-create-socket; + import ip-name-lookup; +} diff --git a/examples/go/http-outgoing-server/wit/deps/wrpc-http/http.wit b/examples/go/http-outgoing-server/wit/deps/wrpc-http/http.wit new file mode 100644 index 000000000..0ecd85a26 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/deps/wrpc-http/http.wit @@ -0,0 +1,53 @@ +// This is based on `wasi:http@0.2.0` +package wrpc:http@0.1.0; + +interface types { + use wasi:http/types@0.2.0.{ + error-code as wasi-error-code, + method as wasi-method, + request-options as wasi-request-options, + scheme as wasi-scheme, + }; + use wasi:clocks/monotonic-clock@0.2.0.{duration}; + + type error-code = wasi-error-code; + type method = wasi-method; + type scheme = wasi-scheme; + + type fields = list>>>; + + record request-options { + connect-timeout: option, + first-byte-timeout: option, + between-bytes-timeout: option, + } + + record request { + body: stream, + trailers: future>, + method: method, + path-with-query: option, + scheme: option, + authority: option, + headers: fields, + } + + record response { + body: stream, + trailers: future>, + status: u16, + headers: fields, + } +} + +interface incoming-handler { + use types.{request, response, error-code}; + + handle: func(request: request) -> result; +} + +interface outgoing-handler { + use types.{request, response, error-code, request-options}; + + handle: func(request: request, options: option) -> result; +} diff --git a/examples/go/http-outgoing-server/wit/world.wit b/examples/go/http-outgoing-server/wit/world.wit new file mode 100644 index 000000000..4b5a6ab12 --- /dev/null +++ b/examples/go/http-outgoing-server/wit/world.wit @@ -0,0 +1,5 @@ +package wrpc-examples:http-outgoing-server; + +world server { + export wrpc:http/outgoing-handler@0.1.0; +} diff --git a/go.work b/go.work index f9f477614..77ed5919d 100644 --- a/go.work +++ b/go.work @@ -4,6 +4,8 @@ use ( examples/go/hello-client examples/go/hello-server examples/go/http-outgoing-nats-server + examples/go/http-outgoing-client + examples/go/http-outgoing-server examples/go/keyvalue-server go tests/go