benchmarks.yml

name: Performance Benchmarks

on:
  # Run on releases
  release:
    types: [published]
  # Allow manual trigger
  workflow_dispatch:
    inputs:
      benchmark_filter:
        description: 'JMH benchmark filter (regex pattern, e.g. MessageBus)'
        required: false
        default: ''
      fork_count:
        description: 'Number of JMH forks'
        required: false
        default: '2'

jobs:
  benchmarks:
    runs-on: ubuntu-latest
    env:
      FORCE_JAVASCRIPT_ACTIONS_TO_NODE24: true

    steps:
      - name: Setup JDK 21
        uses: actions/setup-java@v4
        with:
          distribution: 'temurin'
          java-version: '21'

      - name: Checkout
        uses: actions/checkout@v4

      - name: Cache Maven dependencies
        uses: actions/cache@v4
        with:
          path: ~/.m2/repository
          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
          restore-keys: |
            ${{ runner.os }}-maven-

      - name: Build platform (skip tests for speed)
        run: mvn -DskipTests clean install

      - name: Run JMH Benchmarks
        run: |
          cd platform-benchmarks
          FILTER="${{ github.event.inputs.benchmark_filter }}"
          FORKS="${{ github.event.inputs.fork_count }}"
          FORKS="${FORKS:-2}"

          ARGS="-rf json -rff target/jmh-result.json -f ${FORKS}"
          if [ -n "$FILTER" ]; then
            ARGS="$ARGS $FILTER"
          fi

          java -jar target/benchmarks.jar $ARGS

      - name: Upload Benchmark Results
        uses: actions/upload-artifact@v4
        with:
          name: jmh-results
          path: platform-benchmarks/target/jmh-result.json
          retention-days: 90

      - name: Store Benchmark Results
        if: github.event_name == 'release'
        uses: benchmark-action/github-action-benchmark@v1
        with:
          tool: 'jmh'
          output-file-path: platform-benchmarks/target/jmh-result.json
          github-token: ${{ secrets.GITHUB_TOKEN }}
          auto-push: true
          alert-threshold: '150%'
          comment-on-alert: true
          fail-on-alert: false