modularize GitHub Actions workflows: separate build-wheel and release processes

.github/workflows/build-wheel.yml

@@ -0,0 +1,50 @@
+name: Build Python Wheel
+
+on:
+  workflow_call:
+    inputs:
+      ref:
+        description: Git ref to check out
+        required: false
+        type: string
+        default: ""
+
+jobs:
+  build-wheel:
+    name: Build Python wheel
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v7
+        with:
+          fetch-depth: 0
+          ref: ${{ inputs.ref || github.ref }}
+
+      - name: Set up Java
+        uses: actions/setup-java@v5
+        with:
+          distribution: temurin
+          java-version: 21
+
+      - name: Set up Gradle
+        uses: gradle/actions/setup-gradle@v6
+
+      - name: Make Gradle wrapper executable
+        run: chmod +x ./gradlew
+
+      - name: Build and test
+        run: ./gradlew clean build buildPythonWheel
+
+      - name: Collect wheel
+        run: |
+          mkdir -p dist
+          find . -path "*/build/install/*/dist/*.whl" -exec cp {} dist/ \;
+
+      - name: Upload Python wheel artifact
+        uses: actions/upload-artifact@v4
+        with:
+          name: python-wheel
+          path: dist/*.whl
+          if-no-files-found: error
+          retention-days: 14

.github/workflows/build.yml

@@ -9,35 +9,18 @@ on:
 permissions:
   contents: read
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
-  build:
+  build-wheel:
     name: Build and test
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Checkout repository
-        uses: actions/checkout@v7
-        with:
-          fetch-depth: 0
-
-      - name: Set up Java
-        uses: actions/setup-java@v5
-        with:
-          distribution: temurin
-          java-version: 21
-
-      - name: Set up Gradle
-        uses: gradle/actions/setup-gradle@v6
-
-      - name: Make Gradle wrapper executable
-        run: chmod +x ./gradlew
-
-      - name: Build and test
-        run: ./gradlew clean build
+    uses: ./.github/workflows/build-wheel.yml
 
   dependency-submission:
     name: Submit Gradle dependencies
-    needs: build
+    needs: build-wheel
     runs-on: ubuntu-latest
     if: github.event_name == 'push' && github.ref == 'refs/heads/main'
     permissions:

.github/workflows/release.yml

@@ -0,0 +1,46 @@
+name: Release
+
+on:
+  release:
+    types:
+      - published
+
+permissions:
+  contents: write
+  actions: read
+
+concurrency:
+  group: release-${{ github.event.release.id }}
+  cancel-in-progress: false
+
+jobs:
+  build-wheel:
+    name: Build wheel from release tag
+    uses: ./.github/workflows/build-wheel.yml
+    with:
+      ref: ${{ github.event.release.tag_name }}
+
+  publish-wheel:
+    name: Publish Python wheel to GitHub Release
+    needs: build-wheel
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Download Python wheel artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: python-wheel
+          path: dist
+
+      - name: Generate checksums
+        run: |
+          cd dist
+          sha256sum *.whl > SHA256SUMS.txt
+
+      - name: Publish wheel to GitHub Release
+        uses: softprops/action-gh-release@v2
+        with:
+          tag_name: ${{ github.event.release.tag_name }}
+          files: |
+            dist/*.whl
+            dist/SHA256SUMS.txt