name: Benchmarks

on:
  workflow_dispatch:

jobs:
  benchmarks:
    name: Run Benchmarks
    runs-on: ubuntu-latest
    environment: matrix-rust-bot
    if: github.event_name == 'push' || !github.event.pull_request.draft

    steps:
    - name: Checkout the repo
      uses: actions/checkout@v3

    - name: Install Rust
      uses: dtolnay/rust-toolchain@master
      with:
        toolchain: nightly-2023-11-08
        components: rustfmt

    - name: Run Benchmarks
      run: cargo bench | tee benchmark-output.txt

    - name: Check benchmark result for PR
      if: github.event_name == 'pull_request'
      uses: benchmark-action/github-action-benchmark@v1
      with:
        name: Rust Benchmark
        tool: 'cargo'
        output-file-path: benchmark-output.txt
        auto-push: false
        # comment to alert the user this has gone bad
        github-token: ${{ secrets.MRB_ACCESS_TOKEN }}
        alert-threshold: '120%'
        comment-on-alert: true
        fail-threshold: '150%'
        fail-on-alert: true

    - name: Store benchmark result
      if: github.event_name != 'pull_request'
      uses: benchmark-action/github-action-benchmark@v1
      with:
        name: Rust Benchmark
        tool: 'cargo'
        output-file-path: benchmark-output.txt
        github-token: ${{ secrets.GITHUB_TOKEN }}
        auto-push: true
        # Show alert with commit comment on detecting possible performance regression
        alert-threshold: '150%'
        comment-on-alert: true
        fail-on-alert: true
        alert-comment-cc-users: '@gnunicornBen,@jplatte,@poljar'