name: PR build

on: pull_request

concurrency:
  group: ci-${{ github.event.pull_request.number }}
  cancel-in-progress: true

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Start deadlock detector
        run: .github/scripts/deadlock-detector.sh

      - name: Build
        uses: gradle/gradle-build-action@v2
        with:
          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
          arguments: build -x javadoc
          cache-read-only: true

      - name: Upload deadlock detector artifacts if any
        if: always()
        uses: actions/upload-artifact@v2
        with:
          name: deadlock-detector-build
          path: /tmp/deadlock-detector-*
          if-no-files-found: ignore

      - name: Upload jvm crash dump files if any
        if: always()
        uses: actions/upload-artifact@v2
        with:
          name: javacore-build
          path: |
            "**/hs_err_pid*.log"
            "**/javacore.*.txt"
            "**/Snap.*.trc"
            "**/core.*.dmp"
            "**/jitdump.*.dmp"
          if-no-files-found: ignore

  build-gradle-plugins:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Build
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          arguments: build
          build-root-directory: gradle-plugins

  test:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        test-java-version:
          - 8
          - 11
          - 15
        vm:
          - hotspot
          - openj9
      fail-fast: false
    steps:
      - uses: actions/checkout@v2.3.4

      - id: setup-test-java
        name: Set up JDK ${{ matrix.test-java-version }}-${{ matrix.vm }} for running tests
        uses: actions/setup-java@v2
        with:
          distribution: adopt-${{ matrix.vm }}
          java-version: ${{ matrix.test-java-version }}

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Start deadlock detector
        run: .github/scripts/deadlock-detector.sh

      - name: Test
        uses: gradle/gradle-build-action@v2
        with:
          arguments: test -PtestJavaVersion=${{ matrix.test-java-version }} -PtestJavaVM=${{ matrix.vm }} -Porg.gradle.java.installations.paths=${{ steps.setup-test-java.outputs.path }} -Porg.gradle.java.installations.auto-download=false
          cache-read-only: true

      - name: Upload deadlock detector artifacts if any
        if: always()
        uses: actions/upload-artifact@v2
        with:
          name: deadlock-detector-test-${{ matrix.test-java-version }}
          path: /tmp/deadlock-detector-*
          if-no-files-found: ignore

      - name: Upload jvm crash dump files if any
        if: always()
        uses: actions/upload-artifact@v2
        with:
          name: javacore-test-${{ matrix.test-java-version }}
          path: |
            "**/hs_err_pid*.log"
            "**/javacore.*.txt"
            "**/Snap.*.trc"
            "**/core.*.dmp"
            "**/jitdump.*.dmp"
          if-no-files-found: ignore

  testLatestDeps:
    # testLatestDeps is not included in the PR workflow by default
    # because any time a new library version is released to maven central
    # it can fail due to test code incompatibility with the new library version,
    # or due to slight changes in emitted telemetry, which can be confusing for contributors
    # (muzzle can also fail when a new library version is released to maven central
    # but that happens much less often)
    #
    # the condition is on the steps below instead of here on the job, because skipping the job
    # causes the job to show up as canceled in the GitHub UI which prevents the build section from
    # collapsing when everything (else) is green
    #
    # and the name is updated when the steps below are skipped which makes what's happening clearer
    # in the GitHub UI
    name: testLatestDeps${{ !contains(github.event.pull_request.labels.*.name, 'test latest deps') && ' (skipped)' || ''}}
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        if: ${{ contains(github.event.pull_request.labels.*.name, 'test latest deps') }}
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Test
        if: ${{ contains(github.event.pull_request.labels.*.name, 'test latest deps') }}
        uses: gradle/gradle-build-action@v2
        with:
          arguments: test -PtestLatestDeps=true
          cache-read-only: true

  smoke-test:
    runs-on: ${{ matrix.os }}
    strategy:
      matrix:
        os:
          - windows-2019
          - ubuntu-latest
        smoke-test-suite:
          - jetty
          - liberty
          - payara
          - tomcat
          - tomee
          - websphere
          - wildfly
          - other
        exclude:
          - os: windows-2019
            smoke-test-suite: websphere
      fail-fast: false
    steps:
      - name: Support longpaths
        run: git config --system core.longpaths true
        if: matrix.os == 'windows-2019'

      - uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Test
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          arguments: ":smoke-tests:test -PsmokeTestSuite=${{ matrix.smoke-test-suite }}"

  setup-muzzle-matrix:
    # release branches are excluded
    # because any time a new library version is released to maven central it can fail
    # which requires unnecessary release branch maintenance, especially for patches
    if: ${{ !startsWith(github.base_ref, 'v') }}
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.set-matrix.outputs.matrix }}
    steps:
      - name: Check out repository
        uses: actions/checkout@v2.3.4
        with:
          fetch-depth: 0

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: List instrumentations to file
        uses: gradle/gradle-build-action@v2
        with:
          arguments: instrumentation:listInstrumentations
          cache-read-only: true

      - id: set-matrix
        run: echo "::set-output name=matrix::{\"module\":[\"$(cat instrumentation-list.txt | xargs echo | sed 's/ /","/g')\"]}"

  muzzle:
    needs: setup-muzzle-matrix
    runs-on: ubuntu-latest
    strategy:
      matrix: ${{fromJson(needs.setup-muzzle-matrix.outputs.matrix)}}
      fail-fast: false
    steps:
      - name: Check out repository
        uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Run muzzle
        uses: gradle/gradle-build-action@v2
        with:
          arguments: ${{ matrix.module }}:muzzle
          cache-read-only: true

  examples:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2.3.4

      - name: Set up JDK 11 for running Gradle
        uses: actions/setup-java@v2
        with:
          distribution: adopt
          java-version: 11

      - name: Local publish of artifacts
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
          arguments: publishToMavenLocal -x javadoc

      - name: Local publish of gradle plugins
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          # javadoc task fails sporadically fetching https://docs.oracle.com/javase/8/docs/api/
          arguments: publishToMavenLocal -x javadoc
          build-root-directory: gradle-plugins

      - name: Build distro
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          arguments: build --init-script ../../.github/scripts/local.init.gradle.kts
          build-root-directory: examples/distro

      - name: Build extension
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          arguments: build --init-script ../../.github/scripts/local.init.gradle.kts
          build-root-directory: examples/extension

      - name: Run muzzle check against extension
        uses: gradle/gradle-build-action@v2
        with:
          cache-read-only: true
          arguments: muzzle --init-script ../../.github/scripts/local.init.gradle.kts
          build-root-directory: examples/extension

  accept-pr:
    needs: [ build, test, smoke-test, muzzle, examples ]
    runs-on: ubuntu-latest
    if: always()
    steps:
      # run this action to get workflow conclusion
      # You can get conclusion by env (env.WORKFLOW_CONCLUSION)
      - uses: technote-space/workflow-conclusion-action@v2.2

      - name: Fail build
        if: env.WORKFLOW_CONCLUSION == 'failure' # notify only if failure
        run: exit 1