unit-test-on-pull-request.yml

name: CI

on:
  push:
    branches: [main]
  pull_request:
    branches: ["**"]

jobs:
  legal:
    name: Check licenses of dependencies
    runs-on: ubuntu-24.04
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Set up environment
        uses: ./.github/workflows/env
      - name: Check for changes in licenses of dependencies
        run: |
          make legal
          if [ -n "$(git status --porcelain)" ]; then
            echo "run \"make legal\"."
            exit 1
          fi

  lint:
    name: Lint (${{ matrix.target_arch }})
    runs-on: ubuntu-24.04
    strategy:
      matrix:
        target_arch: [amd64, arm64]
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Set up environment
        uses: ./.github/workflows/env
      - name: Get linter version
        id: linter-version
        run: (echo -n "version="; make linter-version) >> "$GITHUB_OUTPUT"
      - name: golangci-lint
        uses: golangci/golangci-lint-action@v6
        env:
          GOARCH: ${{ matrix.target-arch }}
          CGO_ENABLED: 1
        with:
          version: ${{ steps.linter-version.outputs.version }}
      - name: Lint eBPF code
        run: |
          sudo apt update
          sudo apt install -y clang-format-17
          make lint -C support/ebpf

  test:
    name: Test (${{ matrix.target_arch }})
    runs-on: ubuntu-24.04
    strategy:
      matrix:
        target_arch: [amd64, arm64]
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Set up environment
        uses: ./.github/workflows/env
      - name: Cache coredump modules
        uses: actions/cache@v4
        with:
          path: tools/coredump/modulecache
          key: coredumps-${{ matrix.target_arch }}-${{ hashFiles('tools/coredump/testdata/*/*.json') }}
          restore-keys: |
            coredumps-${{ matrix.target_arch }}
            coredumps-
      - name: Tests
        run: make test TARGET_ARCH=${{ matrix.target_arch }}

  check-ebpf-blobs:
    name: Check for differences in the eBPF binary blobs
    runs-on: ubuntu-24.04
    container: otel/opentelemetry-ebpf-profiler-dev:latest
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Hash eBPF blobs
        run: |
          sha256sum support/ebpf/tracer.ebpf.release.* > ebpf-blobs.hash
      - name: Rebuild eBPF blobs
        run: |
          rm support/ebpf/tracer.ebpf.release.*
          make amd64 -C support/ebpf
          make arm64 -C support/ebpf
      - name: Check for differences
        run: |
          if ! sha256sum --check ebpf-blobs.hash; then
            echo "Please rebuild and commit the updated eBPF binary blobs."
            exit 1
          fi


  build-integration-test-binaries:
    name: Build integration test binaries (${{ matrix.target_arch }})
    runs-on: ubuntu-24.04
    timeout-minutes: 10
    strategy:
      matrix:
        target_arch: [amd64, arm64]
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Set up environment
        uses: ./.github/workflows/env
      - name: Prepare integration test binaries for qemu tests
        run: make integration-test-binaries TARGET_ARCH=${{ matrix.target_arch }}
      - name: Upload integration test binaries
        uses: actions/upload-artifact@v4
        with:
          name: integration-test-binaries-${{ matrix.target_arch }}
          path: support/*.test

  integration-tests:
    name: Integration tests (v${{ matrix.kernel }} ${{ matrix.target_arch }})
    runs-on: ubuntu-24.04
    needs: build-integration-test-binaries
    timeout-minutes: 10
    strategy:
      matrix:
        include:
          # List of available kernels here:
          # https://github.com/cilium/ci-kernels/pkgs/container/ci-kernels/versions?filters%5Bversion_type%5D=tagged

          # AMD64
          - { target_arch: amd64, kernel: 4.19.314 }
          - { target_arch: amd64, kernel: 5.4.276 }
          - { target_arch: amd64, kernel: 5.10.217 }
          - { target_arch: amd64, kernel: 5.15.159 }
          - { target_arch: amd64, kernel: 6.1.91 }
          - { target_arch: amd64, kernel: 6.6.31 }
          - { target_arch: amd64, kernel: 6.8.10 }
          - { target_arch: amd64, kernel: 6.9.1 }

          # ARM64 (NOTE: older ARM64 kernels are not available in Cilium repos)
          - { target_arch: arm64, kernel: 6.6.31 }
          - { target_arch: arm64, kernel: 6.8.4 }
          - { target_arch: arm64, kernel: 6.9.1 }
    steps:
      - name: Clone code
        uses: actions/checkout@v4
      - name: Set up environment
        uses: ./.github/workflows/env
      - name: Install dependencies
        run: |
          case "${{ matrix.target_arch }}" in
            amd64) sudo apt-get -y install qemu-system-x86;;
            arm64) sudo apt-get -y install qemu-system-arm;;
            *) echo >&2 "bug: bad arch selected"; exit 1;;
          esac
          go install github.com/florianl/bluebox@v0.0.1
          sudo mv ~/go/bin/bluebox /usr/local/bin/.
      - name: Fetch integration test binaries
        uses: actions/download-artifact@v4
        with: { name: "integration-test-binaries-${{ matrix.target_arch }}" }
      - name: Fetch precompiled kernel
        run: |
          install -d ci-kernels
          echo "FROM ghcr.io/cilium/ci-kernels:${{ matrix.kernel }}" \
            | docker buildx build --platform linux/${{ matrix.target_arch }} \
              --quiet --pull --output="ci-kernels" -
          mv ci-kernels/boot/ ci-kernels/${{ matrix.kernel }}/
      - name: Test on kernel ${{ matrix.kernel }}
        run: |
          chmod a+rx *.test
          case "${{ matrix.target_arch }}" in
            amd64) export QEMU_ARCH=x86_64;;
            arm64) export QEMU_ARCH=aarch64;;
            *) echo >&2 "bug: bad arch selected"; exit 1;;
          esac
          support/run-tests.sh ${{ matrix.kernel }}