main.yml

name: Tomcat integration

on:
  push:
  pull_request:

jobs:
  tomcat-it:
    runs-on: ubuntu-24.04
    strategy:
      fail-fast: false
      matrix:
        java: [17, 21]
        tomcat: [9.0.117-jre17-temurin, 9.0.117-jre21-temurin]

    permissions:
      contents: read

    steps:
      - uses: actions/checkout@v4

      - uses: actions/setup-java@v5
        with:
          distribution: temurin
          java-version: ${{ matrix.java }}
          cache: maven

      - name: Build library and test webapp
        run: mvn -B -DskipTests package

      - name: Build Tomcat test image
        run: |
          docker build \
            --build-arg TOMCAT_TAG=${{ matrix.tomcat }} \
            -f .github/Dockerfile.tomcat-it \
            -t mylib-it:${{ github.sha }} .

      - name: Start Tomcat
        run: |
          docker run -d --name tomcat-it -p 8080:8080 mylib-it:${{ github.sha }}

          for i in {1..60}; do
            if curl -fsS http://127.0.0.1:8080/health; then
              exit 0
            fi
            sleep 2
          done

          echo "Tomcat did not become ready"
          docker logs tomcat-it || true
          exit 1

      - name: Exercise app
        run: |
          curl -fsS http://127.0.0.1:8080/trigger
          curl -fsS http://127.0.0.1:8080/health

      - name: Stop Tomcat and collect logs
        if: always()
        run: |
          mkdir -p artifacts
          docker stop --time 30 tomcat-it || true
          docker logs tomcat-it > artifacts/container.log 2>&1 || true
          docker cp tomcat-it:/usr/local/tomcat/logs artifacts/tomcat-logs || true
          docker inspect tomcat-it > artifacts/container-inspect.json || true

      - name: Fail on unexpected shutdown errors
        if: always()
        run: |
          if grep -R -E "(OutOfMemoryError|SEVERE|NoClassDefFoundError|ClassCastException|memory leak)" artifacts; then
            echo "Unexpected errors found in Tomcat shutdown logs"
            exit 1
          fi

      - name: Upload logs
        if: always()
        uses: actions/upload-artifact@v4
        with:
          name: tomcat-logs-java${{ matrix.java }}-${{ matrix.tomcat }}
          path: artifacts/
          retention-days: 7