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path: root/.github/workflows/benchmark.yml
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name: Benchmarks
on:
  workflow_dispatch:
  push:
    branches:
      - master

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

jobs:
  benchmark:
    name: Performance regression check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v2
      - uses: actions/setup-go@v1
      # Run benchmark with `go test -bench` and stores the output to a file
      - name: Run benchmark
        run: go test -v ./... -bench=. -run=xxx -benchmem | tee output.txt
      # Download previous benchmark result from cache (if exists)
      - name: Download previous benchmark data
        uses: actions/cache@v1
        with:
          path: ./cache
          key: ${{ runner.os }}-benchmark
      # Run `github-action-benchmark` action
      - name: Store benchmark result
        uses: benchmark-action/github-action-benchmark@v1
        with:
          # What benchmark tool the output.txt came from
          tool: 'go'
          # Where the output from the benchmark tool is stored
          output-file-path: output.txt
          # Where the previous data file is stored
          external-data-json-path: ./cache/benchmark-data.json
          # Workflow will fail when an alert happens
          fail-on-alert: false
          # GitHub API token to make a commit comment
          github-token: ${{ secrets.GITHUB_TOKEN }}
          # Enable alert commit comment
          comment-on-alert: true
          # Push and deploy GitHub pages branch automatically
          auto-push: true