ci.yml

name: CI
on:
  pull_request:
    branches: [ main ]
  push:
    branches: [ main ]
    tags: [ v* ]
jobs:
  ci:
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up JDK
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: '21'
          cache: 'maven'
      - name: Test
        run: mvn --batch-mode --update-snapshots verify
      - name: Prepare release notes
        uses: release-drafter/release-drafter@v5
        with:
          config-name: release-drafter.yml
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

  benchmark:
    needs: [ ci ]
    runs-on: ubuntu-22.04
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up JDK
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: '21'
          cache: 'maven'
      - name: Run java benchmarks # java benchmarks, excluding the chained tests
        id: benchmark_java
        run: |
          mvn package -DskipTests=true
          java -Djmh.executor=VIRTUAL -jar bench/bench-java/target/benchmarks.jar -i 5 -wi 5 -f 1 -to 1100ms -r 1000ms -w 1000ms -rf json -rff jmh-result-java.json -e ".*Chained.*" | tee out.txt
          
          echo 'output<<EOF' >> $GITHUB_OUTPUT
          cat out.txt >> $GITHUB_OUTPUT
          echo 'EOF' >> $GITHUB_OUTPUT
      - name: Run kotlin benchmarks # kotlin benchmarks, excluding the chained tests
        id: benchmark_kotlin
        run: |
          java -jar bench/bench-kotlin/target/benchmarks.jar -i 5 -wi 5 -f 1 -to 1100ms -r 1000ms -w 1000ms -rf json -rff jmh-result-kotlin.json -e ".*Chained.*" | tee out.txt
          
          echo 'output<<EOF' >> $GITHUB_OUTPUT
          cat out.txt >> $GITHUB_OUTPUT
          echo 'EOF' >> $GITHUB_OUTPUT
      - name: Merge java and kotlin benchmark results
        run: jq -s '.[0] + .[1]' jmh-result-java.json jmh-result-kotlin.json > jmh-result-all.json
      - name: Extract branch name
        shell: bash
        run: echo "branch=${GITHUB_HEAD_REF:-${GITHUB_REF#refs/heads/}}" >> $GITHUB_OUTPUT
        id: extract_branch
      - name: Check & store benchmark result
        uses: benchmark-action/github-action-benchmark@v1
        # Only store updated benchmark results on main branch
        if: steps.extract_branch.outputs.branch == 'main'
        with:
          tool: 'jmh'
          output-file-path: jmh-result-all.json
          github-token: ${{ secrets.GITHUB_TOKEN }}
          auto-push: true
          # Show alert with commit comment on detecting possible performance regression
          alert-threshold: '120%'
          # Enable alert commit comment
          comment-on-alert: true
          fail-on-alert: true
          alert-comment-cc-users: '@adamw'
          # Store benchmark results in the docs folder of the main branch
          gh-pages-branch: ${{ steps.extract_branch.outputs.branch }}
          benchmark-data-dir-path: 'docs/bench'
          skip-fetch-gh-pages: true
      - name: Comment on PR with results
        uses: actions/github-script@v7
        env:
          JAVA_OUTPUT: ${{ steps.benchmark_java.outputs.output }}
          KOTLIN_OUTPUT: ${{ steps.benchmark_kotlin.outputs.output }}
        with:
          script: |
            function extractContent(str) {
              const regex = /^Benchmark([\s\S]*?)(?=^Benchmark result)/m;
              const match = str.match(regex);
              return match ? match[1].trim() : null;
            }
            
            // Only if there's a PR within which we run
            if (context.issue.number) {
              let javaResults = extractContent(`${process.env.JAVA_OUTPUT}`);
              let kotlinResults = extractContent(`${process.env.KOTLIN_OUTPUT}`);
            
              let comment = `<details><summary>Benchmark results</summary>

              \`\`\`
              Java:
              ${javaResults}
            
              Kotlin:
              ${kotlinResults}
              \`\`\`

              </details>`;
            
              github.rest.issues.createComment({
                issue_number: context.issue.number,
                owner: context.repo.owner,
                repo: context.repo.repo,
                body: comment
              });
            }

  publishReleaseNotes:
    name: Publish release notes
    needs: [ ci ]
    runs-on: ubuntu-22.04
    if: github.event_name != 'pull_request' && (startsWith(github.ref, 'refs/tags/v'))
    steps:
      - name: Checkout
        uses: actions/checkout@v3
      - name: Set up JDK
        uses: actions/setup-java@v3
        with:
          distribution: 'zulu'
          java-version: '21'
      - name: Extract version from tag name
        run: |
          version=${GITHUB_REF/refs\/tags\/v/}
          echo "VERSION=$version" >> $GITHUB_ENV
      - name: Publish release notes
        uses: release-drafter/release-drafter@v5
        with:
          config-name: release-drafter.yml
          publish: true
          name: "v${{ env.VERSION }}"
          tag: "v${{ env.VERSION }}"
          version: "v${{ env.VERSION }}"
        env:
          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}