name: BVT
on: [pull_request]
env:
  RUST_VERSION: 1.90.0
jobs:
  build:
    name: Build
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - run: rustup install ${{ env.RUST_VERSION }} && rustup default ${{ env.RUST_VERSION }}
      - run: make debug

  fmt:
    name: Format Check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - run: rustup install ${{ env.RUST_VERSION }} && rustup default ${{ env.RUST_VERSION }}
      - run: rustup component add rustfmt
      - run: make fmt
  clippy:
    name: Clippy Check
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v6
      - run: rustup install ${{ env.RUST_VERSION }} && rustup default ${{ env.RUST_VERSION }}
      - run: rustup component add clippy
      - run: make clippy
  test:
    name: Unit and Integration Test / ${{ matrix.hierarchy }}
    runs-on: ubuntu-24.04
    timeout-minutes: 45
    strategy:
      fail-fast: false
      matrix:
        include:
          - hierarchy: v1
            unexpected_skip: Skipping test in cgroups v2 mode
          - hierarchy: v2
            unexpected_skip: Skipping test in cgroups v1 mode
    env:
      CGROUP_HIERARCHY: ${{ matrix.hierarchy }}
      CGROUP_IMAGE_NAME: ubuntu-22.04-server-cloudimg-amd64.img
      CGROUP_IMAGE_SHA256: 757908b2fd6d5b1431bb45070fc1f56cbf017d4025568d292ece37d9cc75e812
      CGROUP_IMAGE_URL: https://cloud-images.ubuntu.com/releases/jammy/release-20260722/ubuntu-22.04-server-cloudimg-amd64.img
      UNEXPECTED_SKIP: ${{ matrix.unexpected_skip }}
      QEMU_ACCEL: tcg
    steps:
      - uses: actions/checkout@v6

      - name: Install Rust
        run: |
          rustup toolchain install "${RUST_VERSION}" --profile minimal
          rustup default "${RUST_VERSION}"
          rustup target add x86_64-unknown-linux-musl

      - name: Install QEMU and build dependencies
        run: |
          sudo apt-get update
          sudo apt-get install -y \
            binutils \
            cloud-image-utils \
            jq \
            musl-tools \
            ovmf \
            qemu-system-x86 \
            qemu-utils

      - name: Restore pinned Ubuntu cloud image
        id: image-cache
        uses: actions/cache@v5
        with:
          path: ${{ runner.temp }}/cgroup-image
          key: ubuntu-jammy-20260722-amd64

      - name: Download Ubuntu cloud image
        if: steps.image-cache.outputs.cache-hit != 'true'
        run: |
          mkdir -p "${RUNNER_TEMP}/cgroup-image"
          curl --fail --location --retry 3 \
            --output "${RUNNER_TEMP}/cgroup-image/${CGROUP_IMAGE_NAME}" \
            "${CGROUP_IMAGE_URL}"

      - name: Verify Ubuntu cloud image
        run: |
          echo "${CGROUP_IMAGE_SHA256}  ${RUNNER_TEMP}/cgroup-image/${CGROUP_IMAGE_NAME}" \
            | sha256sum --check -

      - name: Build static test executables
        run: |
          ci/qemu/build-static-test-binaries.sh \
            "${RUNNER_TEMP}/cgroup-test-binaries"

      - name: Create guest SSH key
        run: |
          mkdir -p "${RUNNER_TEMP}/cgroup-ssh"
          ssh-keygen \
            -q \
            -t ed25519 \
            -N "" \
            -f "${RUNNER_TEMP}/cgroup-ssh/id_ed25519"

      - name: Start cgroup ${{ matrix.hierarchy }} guest
        run: |
          ci/qemu/boot-cgroup-test-vm.sh \
            "${RUNNER_TEMP}/cgroup-vm" \
            "${RUNNER_TEMP}/cgroup-image/${CGROUP_IMAGE_NAME}" \
            "${RUNNER_TEMP}/cgroup-ssh/id_ed25519.pub" \
            "${CGROUP_HIERARCHY}"

      - name: Run cgroupfs and systemd tests
        run: |
          set -o pipefail
          ci/qemu/run-tests-in-cgroup-vm.sh \
            "${RUNNER_TEMP}/cgroup-vm" \
            "${RUNNER_TEMP}/cgroup-test-binaries" \
            "${RUNNER_TEMP}/cgroup-ssh/id_ed25519" \
            "${CGROUP_HIERARCHY}" \
            2>&1 | tee "${RUNNER_TEMP}/cgroup-tests.log"
          if grep -q "${UNEXPECTED_SKIP}" \
              "${RUNNER_TEMP}/cgroup-tests.log"; then
            echo "A ${CGROUP_HIERARCHY} test unexpectedly skipped" >&2
            exit 1
          fi

      - name: Upload QEMU diagnostics
        if: failure()
        uses: actions/upload-artifact@v7
        with:
          name: cgroup-${{ matrix.hierarchy }}-qemu-diagnostics
          path: |
            ${{ runner.temp }}/cgroup-vm/console.log
            ${{ runner.temp }}/cgroup-vm/qemu.log
          if-no-files-found: ignore

      - name: Stop cgroup guest
        if: always()
        run: ci/qemu/stop-cgroup-test-vm.sh "${RUNNER_TEMP}/cgroup-vm"