push-and-pull_request.yml

name: Build on Push and Pull Request
on:
  push:
    branches:
      - master
  pull_request:

jobs:
  build:
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        # Supported LTS versions as of https://en.wikipedia.org/wiki/Java_version_history
        java-version:
          - 8
          - 11
          - 17
          - 21

    name: Build with JDK ${{ matrix.java-version }}
    steps:
      - name: Cache Dependencies
        uses: actions/cache@v4
        with:
          key: maven-dependencies
          path: ~/.m2/repository
      - name: Check out
        uses: actions/checkout@v4
      - name: Set up JDK ${{ matrix.java-version }}
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: ${{ matrix.java-version }}
          gpg-private-key: ${{ secrets.GPG_PRIVATE_KEY }}
          gpg-passphrase: GPG_PASSPHRASE
      - name: Clean, Build, Install
        run: |
          set -o errexit -o pipefail
          mvn clean install --activate-profiles dirty,dirty-package --update-snapshots --batch-mode --show-version 2>&1 | tee mvnout.txt
          set +o errexit +o pipefail
      - id: version
        name: Evaluate Version
        shell: bash {0}
        run: |
          project_version=`mvn help:evaluate --quiet --define expression=project.version --define forceStdout`
          echo "Version: ${project_version}"
          
          snapshot_version=`echo "${project_version}" | grep --perl-regexp --regexp="-SNAPSHOT$"`
          if [ -n "${snapshot_version}" ]; then
            echo "Identified as snapshot version"
            echo "::set-output name=is-snapshot::true"
          else
            echo "Identified as release version"
            echo "::set-output name=is-snapshot::false"
          fi
      - name: Test, Verify, Deploy
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' && matrix.java-version == 8 && steps.version.outputs.is-snapshot == 'true' }}
        run: |
          set -o errexit -o pipefail
          mvn deploy site --batch-mode --show-version 2>&1 | tee --append mvnout.txt
          set +o errexit +o pipefail
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
          GPG_PASSPHRASE: ${{ secrets.GPG_PASSPHRASE }}
      - name: Test, Verify
        if: ${{ github.event_name != 'push' || github.ref != 'refs/heads/master' || matrix.java-version != 8 || steps.version.outputs.is-snapshot != 'true' }}
        run: |
          set -o errexit -o pipefail
          mvn verify site --define gpg.skip=true --batch-mode --show-version 2>&1 | tee --append mvnout.txt
          set +o errexit +o pipefail
      - name: Check Output
        shell: bash {0}
        run: |
          chmod +x ./target/mvn-suppressions-parent.sh
          mvnout=`cat mvnout.txt | grep --perl-regexp "(?i)\\[(ERR|WARN)" | ./target/mvn-suppressions-parent.sh "$JDK_VERSION"`
          
          if [ -n "${mvnout}" ]; then
            echo "[ERROR] The Maven output contains the following unknown warnings and errors:" >&2
            echo "${mvnout}" >&2
            false
          else
            echo "[INFO] No unknown warnings and errors found."
            echo "${mvnout}" >&2
          fi
        env:
          JDK_VERSION: ${{ matrix.java-version }}
      - name: Prepare Site
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' && matrix.java-version == 8 && steps.version.outputs.is-snapshot == 'true' }}
        run: |
          if [ -f ./target/site/index.html ]; then
            rm ./target/site/index.html
          fi
          if [ -f ./CHANGELOG.md ]; then
            cp ./CHANGELOG.md ./target/site/CHANGELOG.md
          fi
          if [ -f ./README.md ]; then
            cp ./README.md ./target/site/README.md
          fi
      - name: Deploy Site
        if: ${{ github.event_name == 'push' && github.ref == 'refs/heads/master' && matrix.java-version == 8 && steps.version.outputs.is-snapshot == 'true' }}
        uses: peaceiris/actions-gh-pages@v4.0.0
        with:
          github_token: ${{ secrets.GITHUB_TOKEN }}
          publish_dir: ./target/site
          enable_jekyll: true