benchs.yml

# Inspired by Flavio W. Brasil's work on Kyo: https://github.com/fwbrasil/kyo
name: Benchs
on:
  push:
    branches:
      - master
  pull_request:
    types: [ opened, reopened, synchronize ]
    branches-ignore:
      - gh-pages

# Prevent multiple builds at the same time from the same branch (except for 'master').
concurrency:
  group: ${{ github.workflow }}-${{ github.ref == format('refs/heads/{0}', github.event.repository.default_branch) && github.run_id || github.ref }}
  cancel-in-progress: true

permissions:
  # deployments permission to deploy GitHub pages website
  deployments: write
  # contents permission to update benchmark contents in gh-pages branch
  contents: write

jobs:
  benchmark: # See https://github.com/marketplace/actions/continuous-benchmark
    name: Run benchmark
    runs-on: ubuntu-latest
    if: ${{ !github.event.pull_request.head.repo.fork }} # comes from https://github.com/orgs/community/discussions/25217#discussioncomment-3246904
    steps:
      - name: Checkout current branch
        uses: actions/checkout@v4
        with:
          fetch-depth: 0
      - name: Setup Java
        uses: actions/setup-java@v4
        with:
          distribution: temurin
          java-version: 21
          check-latest: true
      - uses: VirtusLab/scala-cli-setup@main
      - name: Use CI sbt jvmopts
        shell: bash
        run: |
          mv .jvmopts .jvmopts_old
          mv .jvmopts-ci .jvmopts
          cat .jvmopts

      - name: compile
        run: sbt compile

      - name: run benchmarks
        # To list all possible options and understand these configurations, see run `sbt "zioKafkaBench/Jmh/run -h"`
        #
        # Used options meaning:
        #  - "-wi 5": 5 warmup iterations
        #  - "-i 5": 5 benchmark iterations
        #  - "-r 1": Minimum time to spend at each measurement iteration. 1 second
        #  - "-w 1": Minimum time to spend at each warmup iteration. 1 second
        #  - "-t 1": Number of worker threads to run with. 1 thread
        #  - "-rf json": Format type for machine-readable results. JSON
        #  - "-foe true": Should JMH fail immediately if any benchmark had experienced an unrecoverable error?. True
        #  - "-to 60": 1 minute timeout per iteration
        run: sbt "zioKafkaBench/Jmh/run -wi 5 -i 5 -r 1 -w 1 -t 1 -to 120 -rf json -foe true"

      - name: Download previous benchmark data
        uses: actions/cache@v3
        with:
          path: ./cache
          key: ${{ runner.os }}-benchmark

      - name: Rollback - Use CI sbt jvmopts
        shell: bash
        run: |
          mv .jvmopts .jvmopts-ci
          mv .jvmopts_old .jvmopts
          cat .jvmopts

      - name: Store benchmark result
        uses: benchmark-action/github-action-benchmark@v1
        with:
          name: JMH Benchmark
          tool: 'jmh'
          output-file-path: zio-kafka-bench/jmh-result.json
          # Access token to deploy GitHub Pages branch
          github-token: ${{ secrets.GITHUB_TOKEN }}
          # Push and deploy GitHub pages branch automatically
          auto-push: true
          alert-threshold: '200%'
          comment-on-alert: true
          fail-on-alert: true
          # Mention these maintainers in the commit comment
          alert-comment-cc-users: '@svroonland,@guizmaii,@erikvanoosten'

      - name: Prune benchmark history
        if: ${{ github.event_name != 'pull_request' }}
        run: |
          echo "::group::Checkout gh-pages branch"
          git clean -fdx
          git checkout gh-pages
          git branch --set-upstream-to=origin/gh-pages gh-pages
          git pull --rebase
          git config --global user.name "zio-kafka CI"
          git config --global user.email "ziokafkaci@users.noreply.github.com"
          echo "::endgroup::"
          echo "Prune benchmark history"
          scala-cli scripts/prune-benchmark-history.sc
          git push