bench.yml

name: Bench
on:
  # temporarily:
  push:
    branches: ["main"]
    paths-ignore: ["*.md", "*.png", "*.svg", "LICENSE-*"]
  pull_request:
    branches: ["main"]
    paths-ignore: ["*.md", "*.png", "*.svg", "LICENSE-*"]
  workflow_run:
    workflows: ["CI"]
    types: [completed]
env:
  CARGO_TERM_COLOR: always
  RUST_BACKTRACE: 1
  TOOLCHAIN: nightly

jobs:
  bench:
    name: Benchmark
    runs-on: self-hosted
    if: ${{ github.event.workflow_run.conclusion == 'success' }}
    steps:
      - name: Install Rust
        uses: dtolnay/rust-toolchain@master
        with:
          toolchain: $TOOLCHAIN
          # components: rustfmt, clippy, llvm-tools-preview

      - name: Use sccache
        uses: mozilla-actions/sccache-action@v0.0.4

      - name: Enable sscache
        run: |
          echo "SCCACHE_GHA_ENABLED=true" >> "$GITHUB_ENV"
          echo "RUSTC_WRAPPER=sccache" >> "$GITHUB_ENV"

      - name: Install dependencies
        env:
          DEBIAN_FRONTEND: noninteractive
        run: |
          sudo apt-get install -y --no-install-recommends gyp mercurial ninja-build lld python-is-python3
          echo "RUSTFLAGS=-C link-arg=-fuse-ld=lld" >> "$GITHUB_ENV"

      - name: Checkout
        uses: actions/checkout@v4
        with:
          ref: ${{ github.event.workflow_run.head_branch }}

      - name: Benchmark
        run: cargo +$TOOLCHAIN bench --features ci,bench | tee output.txt

      - name: Download previous benchmark results
        uses: actions/cache@v4
        with:
          path: ./cache
          key: ${{ runner.os }}-benchmark

      - name: Store current benchmark results
        uses: benchmark-action/github-action-benchmark@v1
        with:
          tool: 'cargo'
          output-file-path: output.txt
          external-data-json-path: ./cache/benchmark-data.json
          fail-on-alert: true
          github-token: ${{ secrets.GITHUB_TOKEN }}
          comment-on-alert: true
          summary-always: true