CI: Add build check for WebAssembly SDK

.github/workflows/main.yml

@@ -56,10 +56,15 @@ jobs:
       matrix_string: '${{ needs.construct-integration-test-matrix.outputs.integration-test-matrix }}'
 
   static-sdk:
-    name: Static SDK
+    name: Static Linux Swift SDK
     # Workaround https://github.com/nektos/act/issues/1875
     uses: apple/swift-nio/.github/workflows/static_sdk.yml@main
 
+  wasm-sdk:
+    name: WebAssembly Swift SDK
+    # Workaround https://github.com/nektos/act/issues/1875
+    uses: apple/swift-nio/.github/workflows/wasm_sdk.yml@main
+
   macos-tests:
     name: macOS tests
     # Workaround https://github.com/nektos/act/issues/1875

.github/workflows/pull_request.yml

@@ -89,3 +89,8 @@ jobs:
     name: Static SDK
     # Workaround https://github.com/nektos/act/issues/1875
     uses: apple/swift-nio/.github/workflows/static_sdk.yml@main
+
+  wasm-sdk:
+    name: WebAssembly Swift SDK
+    # Workaround https://github.com/nektos/act/issues/1875
+    uses: apple/swift-nio/.github/workflows/wasm_sdk.yml@main

.github/workflows/static_sdk.yml

@@ -19,7 +19,7 @@ jobs:
               "platform":"Linux",
               "runner":"ubuntu-latest",
               "image":"ubuntu:jammy",
-              "setup_command":"apt update -q && apt install -y -q curl jq tar && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_prerequisites.sh | bash && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_static_sdk.sh | INSTALL_SWIFT_STATIC_SDK_VERSION=latest INSTALL_SWIFT_STATIC_SDK_ARCH=x86_64 bash && hash -r",
+              "setup_command":"apt update -q && apt install -y -q curl jq tar && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_prerequisites.sh | bash && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_sdk.sh | INSTALL_SWIFT_VERSION=latest INSTALL_SWIFT_ARCH=x86_64 INSTALL_SWIFT_SDK=static-sdk bash && hash -r",
               "command":"swift build",
               "command_arguments":"--swift-sdk x86_64-swift-linux-musl"
             },
@@ -29,7 +29,7 @@ jobs:
               "platform":"Linux",
               "runner":"ubuntu-latest",
               "image":"ubuntu:jammy",
-              "setup_command":"apt update -q && apt install -y -q curl jq tar && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_prerequisites.sh | bash && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_static_sdk.sh | INSTALL_SWIFT_STATIC_SDK_BRANCH=main INSTALL_SWIFT_STATIC_SDK_ARCH=x86_64 bash && hash -r",
+              "setup_command":"apt update -q && apt install -y -q curl jq tar && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_prerequisites.sh | bash && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_sdk.sh | INSTALL_SWIFT_BRANCH=main INSTALL_SWIFT_ARCH=x86_64 INSTALL_SWIFT_SDK=static-sdk bash && hash -r",
               "command":"swift build",
               "command_arguments":"--swift-sdk x86_64-swift-linux-musl"
             }

.github/workflows/wasm_sdk.yml

@@ -0,0 +1,27 @@
+name: WebAssembly SDK
+
+on:
+  workflow_call:
+
+jobs:
+  wasm-sdk:
+    name: WebAssembly Swift SDK
+    # Workaround https://github.com/nektos/act/issues/1875
+    uses: apple/swift-nio/.github/workflows/swift_test_matrix.yml@main
+    with:
+      name: "WebAssembly Swift SDK"
+      matrix_string: >-
+        {
+          "config":[
+            {
+              "name":"main Jammy",
+              "swift_version":"main",
+              "platform":"Linux",
+              "runner":"ubuntu-latest",
+              "image":"ubuntu:jammy",
+              "setup_command":"apt update -q && apt install -y -q curl jq tar && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_prerequisites.sh | bash && curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/install_swift_sdk.sh | INSTALL_SWIFT_BRANCH=main INSTALL_SWIFT_ARCH=x86_64 INSTALL_SWIFT_SDK=wasm-sdk bash && hash -r",
+              "command":"curl -s --retry 3 https://raw.githubusercontent.com/apple/swift-nio/main/scripts/swift-build-with-wasm-sdk.sh | bash -s --",
+              "command_arguments":"--target NIOCore"
+            }
+          ]
+        }

scripts/install_static_sdk.sh → scripts/install_swift_sdk.sh

@@ -20,10 +20,11 @@ error() { printf -- "** ERROR: %s\n" "$*" >&2; }
 fatal() { error "$@"; exit 1; }
 
 # Parameter environment variables
-branch="${INSTALL_SWIFT_STATIC_SDK_BRANCH:=""}"
-version="${INSTALL_SWIFT_STATIC_SDK_VERSION:=""}"
-arch="${INSTALL_SWIFT_STATIC_SDK_ARCH:="aarch64"}"
-os_image="${INSTALL_SWIFT_STATIC_SDK_OS_IMAGE:="ubuntu22.04"}"
+branch="${INSTALL_SWIFT_BRANCH:=""}"
+version="${INSTALL_SWIFT_VERSION:=""}"
+arch="${INSTALL_SWIFT_ARCH:="aarch64"}"
+os_image="${INSTALL_SWIFT_OS_IMAGE:="ubuntu22.04"}"
+sdk="${INSTALL_SWIFT_SDK:="static-sdk"}"
 
 if [[ ! ( -n "$branch" && -z "$version" ) && ! ( -z "$branch" && -n "$version") ]]; then
   fatal "Exactly one of build or version must be defined."
@@ -43,6 +44,20 @@ case "$arch" in
     fatal "Unexpected architecture: $arch" ;;
 esac
 
+case "$sdk" in
+  "static-sdk")
+    sdk_dir="static-sdk"
+    sdk_suffix="_static-linux-0.0.1"
+    ;;
+  "wasm-sdk")
+    sdk_dir="wasm-sdk"
+    sdk_suffix="_wasm"
+    ;;
+  *)
+    fatal "Unexpected Swift SDK: $sdk"
+    ;;
+esac
+
 os_image_sanitized="${os_image//./}"
 
 if [[ -n "$branch" ]]; then
@@ -54,24 +69,24 @@ if [[ -n "$branch" ]]; then
 
   for snapshot in $snapshots; do
     snapshot_url="https://download.swift.org/development/${os_image_sanitized}${arch_suffix}/${snapshot}/${snapshot}-${os_image}${arch_suffix}.tar.gz"
-    static_sdk_url="https://download.swift.org/development/static-sdk/${snapshot}/${snapshot}_static-linux-0.0.1.artifactbundle.tar.gz"
-    
+    sdk_url="https://download.swift.org/development/${sdk_dir}/${snapshot}/${snapshot}${sdk_suffix}.artifactbundle.tar.gz"
+
     # check that the files exist
     "$CURL_BIN" -sILXGET --fail "$snapshot_url" > /dev/null; snapshot_return_code=$?
-    "$CURL_BIN" -sILXGET --fail "$static_sdk_url" > /dev/null; static_sdk_return_code=$?
-    
-    if [[ ("$snapshot_return_code" -eq 0) && ("$static_sdk_return_code" -eq 0) ]]; then
+    "$CURL_BIN" -sILXGET --fail "$sdk_url" > /dev/null; sdk_return_code=$?
+
+    if [[ ("$snapshot_return_code" -eq 0) && ("$sdk_return_code" -eq 0) ]]; then
       log "Discovered branch snapshot: $snapshot"
       break
     else
-      log "Snapshot unavailable: $snapshot (Snapshot return code: $snapshot_return_code, Static SDK return code: $static_sdk_return_code)"
+      log "Snapshot unavailable: $snapshot (Snapshot return code: $snapshot_return_code, Swift SDK return code: $sdk_return_code)"
       snapshot=""
     fi
   done
   if [[ -z "$snapshot" ]]; then
     fatal "Failed to discover usable Swift snapshot"
   fi
-  
+
 elif [[ -n "$version" ]]; then
   if [[ "$version" == "latest" ]]; then
     log "Discovering latest version"
@@ -83,7 +98,7 @@ elif [[ -n "$version" ]]; then
   fi
 
   snapshot_url="https://download.swift.org/swift-${version}-release/${os_image_sanitized}${arch_suffix}/swift-${version}-RELEASE/swift-${version}-RELEASE-${os_image}${arch_suffix}.tar.gz"
-  static_sdk_url="https://download.swift.org/swift-${version}-release/static-sdk/swift-${version}-RELEASE/swift-${version}-RELEASE_static-linux-0.0.1.artifactbundle.tar.gz"
+  sdk_url="https://download.swift.org/swift-${version}-release/${sdk_dir}/swift-${version}-RELEASE/swift-${version}-RELEASE${sdk_suffix}.artifactbundle.tar.gz"
 fi
 
 log "Obtaining Swift toolchain"
@@ -95,16 +110,16 @@ log "Installing Swift toolchain"
 mkdir -p /tmp/snapshot
 "$TAR_BIN" xfz "$snapshot_path" --strip-components 1 -C /
 
-log "Obtaining Static SDK"
-log "Static SDK URL: $static_sdk_url"
-static_sdk_path="/tmp/$(basename "$static_sdk_url")"
-"$CURL_BIN" -sfL "$static_sdk_url" -o "$static_sdk_path" || fatal "Failed to download Static SDK"
+log "Obtaining Swift SDK"
+log "Swift SDK URL: $sdk_url"
+sdk_path="/tmp/$(basename "$sdk_url")"
+"$CURL_BIN" -sfL "$sdk_url" -o "$sdk_path" || fatal "Failed to download Swift SDK"
 
 log "Looking for swift"
 which swift || fatal "Failed to locate installed Swift"
 
 log "Checking swift"
 swift --version
 
-log "Installing Static SDK"
-swift sdk install "$static_sdk_path"
+log "Installing Swift SDK"
+swift sdk install "$sdk_path"

scripts/swift-build-with-wasm-sdk.sh

@@ -0,0 +1,26 @@
+#!/bin/bash
+##===----------------------------------------------------------------------===##
+##
+## This source file is part of the SwiftNIO open source project
+##
+## Copyright (c) 2024 Apple Inc. and the SwiftNIO project authors
+## Licensed under Apache License v2.0
+##
+## See LICENSE.txt for license information
+## See CONTRIBUTORS.txt for the list of SwiftNIO project authors
+##
+## SPDX-License-Identifier: Apache-2.0
+##
+##===----------------------------------------------------------------------===##
+
+set -uo pipefail
+
+# Select the Swift SDK for WebAssembly, not the Embedded one
+SWIFT_SDK="$(swift sdk list | grep _wasm | grep -v -embedded | head -n1)"
+if [[ -z "$SWIFT_SDK" ]]; then
+  echo "No WebAssembly Swift SDK found. Please ensure you have the WebAssembly Swift SDK installed following https://www.swift.org/documentation/articles/wasm-getting-started.html."
+  exit 1
+fi
+
+echo "Using Swift SDK: $SWIFT_SDK"
+swift build --swift-sdk "$SWIFT_SDK" "${@}"