bench_parser.yml

# Parser benchmark, compares main and PR branch with Criterion.
# Comment with text containing `!bench_parser`, a new result will be commented at the bottom of this PR.

name: Parser Benchmark

on:
  issue_comment:
    types: [created]

env:
  RUST_LOG: info

jobs:
  bench:
    permissions:
      pull-requests: write
    name: Bench
    if: github.event.issue.pull_request && contains(github.event.comment.body, '!bench_parser')
    runs-on: ubuntu-latest

    steps:
      - name: Get PR SHA
        id: sha
        uses: actions/github-script@v6
        with:
          result-encoding: string
          script: |
            const response = await github.request(context.payload.issue.pull_request.url);
            return response.data.head.sha;
      - name: Checkout PR Branch
        uses: actions/checkout@v4
        with:
          ref: ${{ steps.sha.outputs.result }}

      - name: Install toolchain
        uses: moonrepo/setup-rust@v1

      - name: Install critcmp
        run: cargo install critcmp

      - name: Compile
        run: cargo build --release --locked -p xtask_bench

      - name: Run Bench on PR Branch
        run: cargo bench_parser --save-baseline pr

      - name: Checkout Main Branch
        uses: actions/checkout@v4
        with:
          clean: false
          ref: main

      - name: Run Bench on Main Branch
        run: cargo bench_parser --save-baseline main

      - name: Compare Bench Results
        id: bench_comparison
        shell: bash
        run: |
          echo "### Parser Benchmark Results" > output
          echo "\`\`\`"  >> output
          critcmp main pr >> output
          echo "\`\`\`" >> output
          cat output
          echo "comment<<EOF" >> $GITHUB_OUTPUT
          cat output >> $GITHUB_OUTPUT
          echo "EOF" >> $GITHUB_OUTPUT

      - name: Write a new comment
        uses: peter-evans/create-or-update-comment@v3
        continue-on-error: true
        with:
          issue-number: ${{ github.event.issue.number }}
          body: |
            ${{ steps.bench_comparison.outputs.comment }}

      - name: Remove Criterion Artifact
        run: rm -rf ./target/criterion