benchmark-comment.yml

name: Post Benchmark Comment
on:
  workflow_run:
    workflows: ["Benchmarks"]
    types: [completed]
jobs:
  comment:
    name: post benchmark comment
    runs-on: ubuntu-latest
    if: >
      github.event.workflow_run.event == 'pull_request' &&
      github.event.workflow_run.conclusion == 'success'
    permissions:
      pull-requests: write
      actions: read
    steps:
      - name: Download benchmark results
        uses: actions/download-artifact@v4
        with:
          name: benchmark-results
          github-token: ${{ secrets.GITHUB_TOKEN }}
          run-id: ${{ github.event.workflow_run.id }}
      - name: Post comment to PR
        uses: actions/github-script@v7
        with:
          script: |
            const fs = require('fs');
            const prNumber = parseInt(fs.readFileSync('pr_number.txt', 'utf8').trim());
            const benchResult = fs.readFileSync('benchmark_result.txt', 'utf8');
            await github.rest.issues.createComment({
              owner: context.repo.owner,
              repo: context.repo.repo,
              issue_number: prNumber,
              body: `## Benchmark Results\n\`\`\`\n${benchResult}\n\`\`\``
            });