docker-image.yml

name: Build and Publish Docker Image

on:
  push:
    branches: [main]
  pull_request:
    branches: [main]

env:
  MAVEN_VERSION: "3.9.11"
  REGISTRY_IMAGE: ${{ secrets.DOCKER_USERNAME }}/${{ secrets.DOCKERHUB_PROJECT_NAME }}

jobs:
  build-test-push:
    name: Build/Test/Publish (Java ${{ matrix.java-version }}, Boot ${{ matrix.spring-boot-version }})
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
    strategy:
      fail-fast: false
      matrix:
        include:
          - java-version: "17"
            spring-boot-version: "4.0.0"
            spring-cloud-version: "2025.1.0"
          - java-version: "21"
            spring-boot-version: "4.0.0"
            spring-cloud-version: "2025.1.0"
          - java-version: "25"
            spring-boot-version: "4.0.0"
            spring-cloud-version: "2025.1.0"
          - java-version: "17"
            spring-boot-version: "3.5.8"
            spring-cloud-version: "2025.0.0"
          - java-version: "21"
            spring-boot-version: "3.5.8"
            spring-cloud-version: "2025.0.0"
          - java-version: "25"
            spring-boot-version: "3.5.8"
            spring-cloud-version: "2025.0.0"

    steps:
      - name: Checkout source code
        uses: actions/checkout@v4
        with:
          fetch-depth: 0

      - name: Set up Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: ${{ matrix.java-version }}
          cache: maven

      - name: Align Maven versions for matrix
        run: |
          mvn -B -ntp versions:update-parent \
            -DparentVersion="[${{ matrix.spring-boot-version }}]" \
            -DgenerateBackupPoms=false \
            -DskipResolution=true \
            -DallowSnapshots=false \
            -DforceVersion=true
          mvn -B -ntp versions:set-property \
            -Dproperty=spring-cloud.version \
            -DnewVersion=${{ matrix.spring-cloud-version }} \
            -DgenerateBackupPoms=false
          mvn -B -ntp versions:set-property \
            -Dproperty=java.version \
            -DnewVersion=${{ matrix.java-version }} \
            -DgenerateBackupPoms=false

      - name: Run Maven tests
        run: mvn -B -ntp verify

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Cache Docker layers
        uses: actions/cache@v4
        with:
          path: /tmp/.buildx-cache
          key: ${{ runner.os }}-buildx-java${{ matrix.java-version }}-boot${{ matrix.spring-boot-version }}-${{ github.sha }}
          restore-keys: |
            ${{ runner.os }}-buildx-java${{ matrix.java-version }}-boot${{ matrix.spring-boot-version }}-
            ${{ runner.os }}-buildx-

      - name: Build test image
        run: |
          docker build \
            --build-arg JAVA_VERSION=${{ matrix.java-version }} \
            --build-arg MAVEN_VERSION=${{ env.MAVEN_VERSION }} \
            --build-arg SPRING_BOOT_VERSION=${{ matrix.spring-boot-version }} \
            --build-arg SPRING_CLOUD_VERSION=${{ matrix.spring-cloud-version }} \
            -t config-server:ci-test .

      - name: Smoke test default Git backend
        run: |
          set -euo pipefail
          container_name=config-server-smoke-git
          cleanup() {
            docker logs "$container_name" || true
            docker rm -f "$container_name" >/dev/null 2>&1 || true
          }
          trap cleanup EXIT
          docker run -d --rm --name "$container_name" -p 8888:8888 config-server:ci-test
          for attempt in $(seq 1 30); do
            if curl -fsS http://localhost:8888/actuator/health | grep -q '"status":"UP"'; then
              exit 0
            fi
            sleep 2
          done
          echo "Config Server (Git backend) did not become healthy in time" >&2
          exit 1

      - name: Smoke test native filesystem backend
        run: |
          set -euo pipefail
          native_dir="$(mktemp -d)"
          cat <<'EOF' > "$native_dir"/application.yml
            example:
              message: native-backend
          EOF

          container_name=config-server-smoke-native
          cleanup() {
            docker logs "$container_name" || true
            docker rm -f "$container_name" >/dev/null 2>&1 || true
            rm -rf "$native_dir"
          }
          trap cleanup EXIT
          docker run -d --rm --name "$container_name" -p 8888:8888 \
            -e SPRING_PROFILES_ACTIVE=native \
            -e SPRING_CLOUD_CONFIG_SERVER_NATIVE_SEARCH_LOCATIONS=file:/opt/config-server/native \
            -v "$native_dir":/opt/config-server/native:ro \
            config-server:ci-test
          for attempt in $(seq 1 30); do
            if curl -fsS http://localhost:8888/actuator/health | grep -q '"status":"UP"'; then
              exit 0
            fi
            sleep 2
          done
          echo "Config Server (native backend) did not become healthy in time" >&2
          exit 1

      - name: Extract metadata
        id: meta
        run: |
          echo "repo_name=${GITHUB_REPOSITORY##*/}" >> "$GITHUB_OUTPUT"
          echo "short_sha=${GITHUB_SHA::7}" >> "$GITHUB_OUTPUT"

      - name: Log in to Docker Hub
        if: github.event_name == 'push' && github.ref == 'refs/heads/main'
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKER_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build and (optionally) push image
        uses: docker/build-push-action@v6
        with:
          context: .
          push: ${{ github.event_name == 'push' && github.ref == 'refs/heads/main' }}
          platforms: linux/amd64,linux/arm64
          tags: |
            ${{ env.REGISTRY_IMAGE }}:java${{ matrix.java-version }}-boot${{ matrix.spring-boot-version }}
            ${{ env.REGISTRY_IMAGE }}:${{ steps.meta.outputs.short_sha }}-java${{ matrix.java-version }}-boot${{ matrix.spring-boot-version }}
          build-args: |
            JAVA_VERSION=${{ matrix.java-version }}
            MAVEN_VERSION=${{ env.MAVEN_VERSION }}
            SPRING_BOOT_VERSION=${{ matrix.spring-boot-version }}
            SPRING_CLOUD_VERSION=${{ matrix.spring-cloud-version }}
          labels: |
            org.opencontainers.image.source=${{ github.repository }}
            org.opencontainers.image.revision=${{ github.sha }}
          cache-from: type=local,src=/tmp/.buildx-cache
          cache-to: type=local,dest=/tmp/.buildx-cache,mode=max