rust-a2/.github/workflows/ci.yml

name: ci

on:
  pull_request:
    paths-ignore:
      - '.github/**'
      - 'README.md'

  push:
    branches: ['main']
    paths-ignore:
      - '.github/**'
      - 'README.md'

concurrency:
  # Support push/pr as event types with different behaviors each:
  # 1. push: queue up builds
  # 2. pr: only allow one run per PR
  group: ${{ github.workflow }}-${{ github.event.type }}${{ github.event.pull_request.number }}
  # If there is already a workflow running for the same pull request, cancel it
  cancel-in-progress: ${{ github.event_name == 'pull_request' }}

jobs:
  tasks:
    name: "[${{ matrix.os }}] ${{ matrix.cargo.name }}"
    runs-on: "${{ matrix.os }}"
    strategy:
      fail-fast: false
      matrix:
        os:
          - ubuntu-latest
        rust:
          - stable
        cargo:
          - name: "Clippy"
            cmd: clippy
            args: -- -D clippy::all
            cache: {}
          - name: "Formatting"
            cmd: fmt
            args: -- --check
            cache: {}
          - name: "Unit Tests"
            cmd: test
            args: --all-features
            cache: { sharedKey: "tests" }
        include:
          - os: ubuntu-latest
            sccache-path: /home/runner/.cache/sccache
    env:
      RUST_BACKTRACE: full
      RUSTC_WRAPPER: sccache
      SCCACHE_CACHE_SIZE: 1G
      SCCACHE_DIR: ${{ matrix.sccache-path }}
    steps:
      # Checkout code
      - name: "Git checkout"
        uses: actions/checkout@v2

      # Install sccache
      - name: "Install sccache"
        if: matrix.os == 'ubuntu-latest'
        env:
          SCCACHE_URL: https://github.com/mozilla/sccache/releases/download
          SCCACHE_VERSION: v0.2.15
        run: |
          SCCACHE_FILE=sccache-$SCCACHE_VERSION-x86_64-unknown-linux-musl
          curl -sSL "$SCCACHE_URL/$SCCACHE_VERSION/$SCCACHE_FILE.tar.gz" | tar xz
          install -vDm 755 "$SCCACHE_FILE/sccache" "$HOME/.local/bin/sccache"
          echo "$HOME/.local/bin" >> "$GITHUB_PATH"

      # Install Rust toolchain
      - name: "Install Rust ${{ matrix.rust }}"
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.rust }}
          profile: minimal
          override: true

      # Rebuild cache
      - name: Cache cargo registry
        uses: Swatinem/rust-cache@3bb3a9a087029c7bc392586cdc88cb6f66b9c6ef
        with: ${{ matrix.cargo.cache }}
        continue-on-error: false

      - name: Cache sccache
        uses: actions/cache@v2
        continue-on-error: false
        with:
          path: ${{ matrix.sccache-path }}
          key: ${{ runner.os }}-sccache-${{ hashFiles('**/Cargo.lock') }}
          restore-keys: |
            ${{ runner.os }}-sccache-

      # Run job
      - name: "Start sccache server"
        run: |
          sccache --stop-server || true
          sccache --start-server

      - name: "Task ${{ matrix.cargo.name }}"
        uses: actions-rs/cargo@v1
        with:
          command: ${{ matrix.cargo.cmd }}
          args: ${{ matrix.cargo.args }}

      - name: "Print sccache stats"
        run: sccache --show-stats

      - name: "Stop sccache server"
        run: sccache --stop-server || true