feat: basic piral support

internal/module.go

@@ -1,6 +1,7 @@
 package internal
 
 import (
+	"encoding/json"
 	"fmt"
 	"sort"
 
@@ -16,6 +17,22 @@ type Module struct {
 	selectedVersion *Version
 }
 
+func FromBytes(bts []byte) (*Module, error) {
+	module := &Module{}
+	err := json.Unmarshal(bts, module)
+	if err != nil {
+		return nil, err
+	}
+	module.Init()
+	return module, nil
+}
+
+func (m *Module) Init() {
+	for _, version := range m.Versions {
+		version.Init()
+	}
+}
+
 // Prints the module name and its version selector
 //
 // If the module has a selected version, it is used instead of the default Latest()
@@ -43,7 +60,7 @@ func (m *Module) HasVersion(version *semver.Version) bool {
 	return false
 }
 
-//VersionStrings serializes the versions to string
+// VersionStrings serializes the versions to string
 func (m *Module) VersionStrings() []string {
 	l := make([]string, len(m.Versions))
 	for i, v := range m.Versions {
@@ -52,7 +69,7 @@ func (m *Module) VersionStrings() []string {
 	return l
 }
 
-//SelectVersion selects the highest version number which matches constraint
+// SelectVersion selects the highest version number which matches constraint
 func (m *Module) SelectVersion(constraint *semver.Constraints) *Version {
 	// descending sort of versions
 	sort.SliceStable(m.Versions, func(i, j int) bool { return m.Versions[i].Version().GreaterThan(m.Versions[j].Version()) })
@@ -90,9 +107,3 @@ func (m *Module) Latest() *Version {
 	sort.SliceStable(m.Versions, func(i, j int) bool { return m.Versions[i].Version().GreaterThan(m.Versions[j].Version()) })
 	return m.Versions[0]
 }
-
-func (m *Module) Init() {
-	for _, version := range m.Versions {
-		version.Init()
-	}
-}

internal/storage/s3/storage.go

@@ -5,7 +5,7 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"io/ioutil"
+	"io"
 	"os"
 	"path"
 	"strings"
@@ -127,12 +127,14 @@ func (s *Storage) ModuleResources(ctx context.Context, module string, version st
 		Recursive: true,
 	}) {
 		var bts []byte
-		if loadData {
+		// always load meta.json as basic support for piral framework
+		//  to avoid a second network call to get meta.json content per module
+		if loadData || strings.HasSuffix(object.Key, "meta.json") {
 			obj, err := s.minioClient.GetObject(ctx, s.bucket, object.Key, minio.GetObjectOptions{})
 			if err != nil {
 				return nil, err
 			}
-			bts, err = ioutil.ReadAll(obj)
+			bts, err = io.ReadAll(obj)
 			if err != nil {
 				errResp := minio.ToErrorResponse(err)
 				if errResp.Code == "NoSuchKey" {
@@ -188,21 +190,18 @@ func (s *Storage) loadModule(ctx context.Context, objectName string, loadData bo
 	if err != nil {
 		return nil, err
 	}
-	var module = &internal.Module{}
-	bts, err := ioutil.ReadAll(manifestObj)
+	bts, err := io.ReadAll(manifestObj)
 	if err != nil {
 		errResp := minio.ToErrorResponse(err)
 		if errResp.Code == "NoSuchKey" {
 			return nil, storage.ModuleNotFound
 		}
 		return nil, err
 	}
-	err = json.Unmarshal(bts, module)
+	module, err := internal.FromBytes(bts)
 	if err != nil {
 		return nil, err
 	}
-	// FIXME: remove this hardcoded dependency MUST be called first after unmarshaling
-	module.Init()
 	// load available resources
 	for _, version := range module.Versions {
 		version.Files, _ = s.ModuleResources(ctx, module.Name, version.Version().String(), loadData)

rpc/get_url.go

@@ -60,8 +60,8 @@ func (s *Server) GetUrl(ctx context.Context, c *connect.Request[moarpb.GetUrlReq
 		selectedVersionString = version.Version().String()
 	default:
 		version = module.Latest()
-		selectedVersionString = "latest"
 		s.logger.Debugf("Module (%s) version is not specified in query, defaulting to latest", request.ModuleName)
+		selectedVersionString = version.Value
 	}
 
 	var resources []*moarpb.VersionResource