arewefastyet_comment.yml

# Adds a comment with a link to arewefastyet when the "Benchmark me" label is added.
name: arewefastyet comment

permissions: read-all

on:
  pull_request_target:
    types: [labeled]

jobs:
  add_arewefastyet_comment:
    name: Add arewefastyet comment
    permissions:
      pull-requests: write
    runs-on: ubuntu-latest
    if: github.event.label.name == 'Benchmark me'

    steps:
      - name: Harden the runner (Audit all outbound calls)
        uses: step-security/harden-runner@8d3c67de8e2fe68ef647c8db1e6a09f647780f40 # v2.19.0
        with:
          egress-policy: audit

      - name: Generate GitHub App token
        uses: actions/create-github-app-token@1b10c78c7865c340bc4f6099eb2f838309f1e8c3 # v3.1.1
        id: app-token
        with:
          app-id: ${{ vars.APP_ID }}
          private-key: ${{ secrets.APP_PRIVATE_KEY }}
          permission-pull-requests: write

      - name: Set token in environment
        run: echo "GH_TOKEN=${{ steps.app-token.outputs.token }}" >> "$GITHUB_ENV"

      - name: Check if comment already exists
        id: check_comment
        run: |
          # Get all comments on the PR
          COMMENTS=$(gh api repos/${{ github.repository }}/issues/${{ github.event.pull_request.number }}/comments --jq '.[].body')

          # Check if arewefastyet comment already exists
          if echo "$COMMENTS" | grep -q "This Pull Request is now handled by arewefastyet"; then
            echo "skip=true" >> "$GITHUB_OUTPUT"
            echo "arewefastyet comment already exists"
          else
            echo "skip=false" >> "$GITHUB_OUTPUT"
          fi

      - name: Add arewefastyet comment
        if: steps.check_comment.outputs.skip != 'true'
        run: |
          gh pr comment ${{ github.event.pull_request.number }} \
            --repo ${{ github.repository }} \
            --body "Hello! :wave:

          This Pull Request is now handled by arewefastyet. The current HEAD and future commits will be benchmarked.

          You can find the performance comparison on the [arewefastyet website](https://benchmark.vitess.io/pr/${{ github.event.pull_request.number }})."