benchmarks.yml

name: Benchmarks

on:
  push:
    branches: [ main, develop ]
  pull_request:
    branches: [ main, develop ]
  schedule:
    - cron: '0 2 * * 0'  # Weekly on Sunday at 2 AM
  workflow_dispatch:

jobs:
  run-benchmarks:
    name: Run Benchmarks
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4
      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
        with:
          components: llvm-tools-preview
      - name: Cache cargo registry
        uses: actions/cache@v3
        with:
          path: |
            ~/.cargo/registry
            ~/.cargo/git
            target
          key: ${{ runner.os }}-cargo-${{ hashFiles('**/Cargo.lock') }}
      - name: Install criterion
        run: cargo install cargo-criterion
      - name: Run benchmarks
        run: cargo criterion --workspace --message-format=json | tee benchmark-results.json
      - name: Upload benchmark results
        uses: actions/upload-artifact@v4
        with:
          name: benchmark-results
          path: benchmark-results.json
          retention-days: 30

  compare-benchmarks:
    name: Compare Benchmarks
    runs-on: ubuntu-latest
    needs: run-benchmarks
    if: github.event_name == 'pull_request'
    steps:
      - uses: actions/checkout@v4
        with:
          ref: ${{ github.base_ref }}
      - name: Install Rust
        uses: dtolnay/rust-toolchain@stable
      - name: Download baseline benchmark results
        uses: actions/download-artifact@v4
        with:
          name: benchmark-results
          path: baseline-results
      - name: Run benchmarks on PR
        run: cargo criterion --workspace --message-format=json | tee pr-results.json
      - name: Compare benchmarks
        run: |
          # Simple comparison script (placeholder)
          echo "Benchmark comparison would be implemented here"
          echo "Baseline results in baseline-results/"
          echo "PR results in pr-results.json"
          # In a real setup, you'd use tools like critcmp or custom analysis
          echo "No significant regression detected (placeholder)"