name: Release

on:

  # Releases can only be triggered via the action tab
  workflow_dispatch:

jobs:
  prepare-release:
    runs-on: ubuntu-18.04
    steps:
      - uses: actions/checkout@v2
        with:
          ref: 4.1

      - name: Set up JDK 8
        uses: actions/setup-java@v1
        with:
          java-version: 8

      - name: Setup git configuration
        run: |
          git config --global user.email "netty-project-bot@users.noreply.github.com"
          git config --global user.name "Netty Project Bot"

      - name: Install SSH key
        uses: shimataro/ssh-key-action@v2
        with:
          key: ${{ secrets.SSH_PRIVATE_KEY_PEM }}
          known_hosts: ${{ secrets.SSH_KNOWN_HOSTS }}

      # Cache .m2/repository
      - name: Cache local Maven repository
        uses: actions/cache@v2
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-prepare-release-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-prepare-release-
            ${{ runner.os }}-maven-

      - name: Prepare release with Maven
        run: |
          mvn -B --file pom.xml -Pci release:prepare -DpreparationGoals=clean -DskipTests=true
          mvn -Pci clean

      - name: Checkout tag
        run: ./.github/scripts/release_checkout_tag.sh release.properties

      - name: Upload workspace
        uses: actions/upload-artifact@v2
        with:
          name: prepare-release-workspace
          path: ${{ github.workspace }}/**

  stage-release-linux:
    runs-on: ubuntu-latest
    needs: prepare-release
    strategy:
      matrix:
        include:
          - setup: linux-x86_64-java8
            docker-compose-build: "-f docker/docker-compose.yaml -f docker/docker-compose.centos-6.18.yaml build"
            docker-compose-run: "-f docker/docker-compose.yaml -f docker/docker-compose.centos-6.18.yaml run stage-release"
          - setup: linux-aarch64
            docker-compose-build: "-f docker/docker-compose.centos-7.yaml build"
            docker-compose-run: "-f docker/docker-compose.centos-7.yaml run cross-compile-aarch64-stage-release"

    name: stage-release-${{ matrix.setup }}

    steps:
      - name: Download release-workspace
        uses: actions/download-artifact@v2
        with:
          name: prepare-release-workspace
          path: ./prepare-release-workspace/

      - name: Adjust mvnw permissions
        run: chmod 755 ./prepare-release-workspace/mvnw

      - name: Set up JDK 8
        uses: actions/setup-java@v1
        with:
          java-version: 8

      - name: Setup git configuration
        run: |
          git config --global user.email "netty-project-bot@users.noreply.github.com"
          git config --global user.name "Netty Project Bot"

      - name: Install SSH key
        uses: shimataro/ssh-key-action@v2
        with:
          key: ${{ secrets.SSH_PRIVATE_KEY_PEM }}
          known_hosts: ${{ secrets.SSH_KNOWN_HOSTS }}

      # Enable caching of Docker layers
      - uses: satackey/action-docker-layer-caching@v0.0.11
        continue-on-error: true
        with:
          key: ${{ runner.os }}-staging-docker-cache-${{ matrix.setup }}-{hash}
          restore-keys: |
            ${{ runner.os }}-staging-docker-cache-${{ matrix.setup }}-
            ${{ runner.os }}-staging-docker-cache-

      - uses: s4u/maven-settings-action@v2.2.0
        with:
          servers: |
            [{
              "id": "sonatype-nexus-staging",
              "username": "${{ secrets.SONATYPE_USERNAME }}",
              "password": "${{ secrets.SONATYPE_PASSWORD }}"
            }]

      # Cache .m2/repository
      - name: Cache local Maven repository
        uses: actions/cache@v2
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-${{ matrix.setup }-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-${{ matrix.setup }-
            ${{ runner.os }}-maven-

      - name: Create local staging directory
        run: mkdir -p ~/local-staging

      - name: Build docker image
        working-directory: ./prepare-release-workspace/
        run: docker-compose ${{ matrix.docker-compose-build }}

      - name: Stage release to local staging directory
        working-directory: ./prepare-release-workspace/
        env:
          GPG_PRIVATE_KEY: ${{ secrets.GPG_PRIVATE_KEY }}
          GPG_KEYNAME: ${{ secrets.GPG_KEYNAME }}
          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
        run: docker-compose ${{ matrix.docker-compose-run }}

      - name: Upload local staging directory
        uses: actions/upload-artifact@v2
        with:
          name: ${{ matrix.setup }}-local-staging
          path: ~/local-staging
          if-no-files-found: error

      - name: Rollback release on failure
        working-directory: ./prepare-release-workspace/
        if: ${{ failure() }}
        # Rollback the release in case of an failure
        run: bash ./.github/scripts/release_rollback.sh release.properties netty/netty 4.1

  deploy-staged-release:
    runs-on: ubuntu-18.04
    # Wait until we have staged everything
    needs: stage-release-linux
    steps:
      - name: Download release-workspace
        uses: actions/download-artifact@v2
        with:
          name: prepare-release-workspace
          path: ./prepare-release-workspace/

      - name: Set up JDK 8
        uses: actions/setup-java@v1
        with:
          java-version: 8

      - name: Setup git configuration
        run: |
          git config --global user.email "netty-project-bot@users.noreply.github.com"
          git config --global user.name "Netty Project Bot"

      - name: Install SSH key
        uses: shimataro/ssh-key-action@v2
        with:
          key: ${{ secrets.SSH_PRIVATE_KEY_PEM }}
          known_hosts: ${{ secrets.SSH_KNOWN_HOSTS }}

      # Hardcode the staging artifacts that need to be downloaded.
      # These must match the matrix setups. There is currently no way to pull this out of the config.
      - name: Download linux-aarch64 staging directory
        uses: actions/download-artifact@v2
        with:
          name: linux-aarch64-local-staging
          path: ~/linux-aarch64-local-staging

      - name: Download linux-x86_64-java8 staging directory
        uses: actions/download-artifact@v2
        with:
          name: linux-x86_64-java8-local-staging
          path: ~/linux-x86_64-java8-local-staging

      # This step takes care of merging all the previous staged repositories in a way that will allow us to deploy
      # all together with one maven command.
      - name: Merge staging repositories
        working-directory: ./prepare-release-workspace/
        run: bash ./.github/scripts/merge_local_staging.sh /home/runner/local-staging/staging ~/linux-aarch64-local-staging/staging ~/linux-x86_64-java8-local-staging/staging

      - uses: s4u/maven-settings-action@v2.2.0
        with:
          servers: |
            [{
              "id": "sonatype-nexus-staging",
              "username": "${{ secrets.SONATYPE_USERNAME }}",
              "password": "${{ secrets.SONATYPE_PASSWORD }}"
            }]

      # Cache .m2/repository
      - name: Cache local Maven repository
        uses: actions/cache@v2
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-deploy-staged-release-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-deploy-staged-release-
            ${{ runner.os }}-maven-

      - name: Deploy local staged artifacts
        working-directory: ./prepare-release-workspace/
        # If we don't want to close the repository we can add -DskipStagingRepositoryClose=true
        run: mvn -Pci -B --file pom.xml org.sonatype.plugins:nexus-staging-maven-plugin:deploy-staged -DnexusUrl=https://oss.sonatype.org -DserverId=sonatype-nexus-staging -DaltStagingDirectory=/home/runner/local-staging -DskipStagingRepositoryClose=true

      - name: Rollback release on failure
        working-directory: ./prepare-release-workspace/
        if: ${{ failure() }}
        # Rollback the release in case of an failure
        run: bash ./.github/scripts/release_rollback.sh release.properties netty/netty 4.1