name: aya-ci

on:
  push:
    branches:
      - main

  pull_request:
    branches:
      - main

  schedule:
    - cron: 00 4 * * *

env:
  CARGO_TERM_COLOR: always

jobs:
  lint:
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: clippy,miri,rustfmt,rust-src

      # Installed *after* nightly so it is the default.
      - uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - uses: taiki-e/install-action@v2
        with:
          tool: cargo-hack,taplo-cli

      - name: Check C formatting
        run: git ls-files -- '*.c' '*.h' | xargs clang-format --dry-run --Werror

      - name: Check Markdown
        uses: DavidAnson/markdownlint-cli2-action@v18

      - name: Check TOML formatting
        run: taplo fmt --check

      - name: Check formatting
        run: cargo +nightly fmt --all -- --check

      - name: Run clippy
        run: ./clippy.sh

      - run: cargo xtask public-api
        if: github.event_name == 'pull_request'

      - run: cargo xtask public-api --bless
        if: github.event_name != 'pull_request' && github.repository_owner == 'aya-rs'

      - uses: peter-evans/create-pull-request@v7
        if: github.event_name != 'pull_request' && github.repository_owner == 'aya-rs'
        with:
          commit-message: "public-api: regenerate"

      - name: Run miri
        run: |
          set -euxo pipefail
          cargo +nightly hack miri test --all-targets --feature-powerset \
            --exclude aya-ebpf \
            --exclude aya-ebpf-bindings \
            --exclude aya-log-ebpf \
            --exclude integration-ebpf \
            --exclude integration-test \
            --workspace

  build-test-aya:
    strategy:
      fail-fast: false
      matrix:
        bpf_target_arch:
          - x86_64-unknown-linux-gnu
          - aarch64-unknown-linux-gnu
          - armv7-unknown-linux-gnueabi
          - riscv64gc-unknown-linux-gnu
          - powerpc64le-unknown-linux-gnu
          - s390x-unknown-linux-gnu
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - uses: taiki-e/install-action@cargo-hack

      - name: Build
        run: |
          set -euxo pipefail
          cargo hack build --all-targets --feature-powerset \
            --exclude aya-ebpf \
            --exclude aya-ebpf-bindings \
            --exclude aya-log-ebpf \
            --exclude integration-ebpf \
            --workspace

      - name: Test
        env:
          RUST_BACKTRACE: full
        run: |
          set -euxo pipefail
          cargo hack test --all-targets --feature-powerset \
            --exclude aya-ebpf \
            --exclude aya-ebpf-bindings \
            --exclude aya-log-ebpf \
            --exclude integration-ebpf \
            --exclude integration-test \
            --workspace

      - name: Doctests
        env:
          RUST_BACKTRACE: full
        run: |
          set -euxo pipefail
          cargo hack test --doc --feature-powerset \
            --exclude aya-ebpf \
            --exclude aya-ebpf-bindings \
            --exclude aya-log-ebpf \
            --exclude init \
            --exclude integration-ebpf \
            --exclude integration-test \
            --workspace

  build-test-aya-ebpf:
    strategy:
      fail-fast: false
      matrix:
        bpf_target_arch:
          - x86_64
          - aarch64
          - arm
          - riscv64
          - powerpc64
          - s390x
        target:
          - bpfel-unknown-none
          - bpfeb-unknown-none
    runs-on: ubuntu-latest

    steps:
      - uses: actions/checkout@v4

      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: rust-src

      # Installed *after* nightly so it is the default.
      - uses: dtolnay/rust-toolchain@stable

      - uses: Swatinem/rust-cache@v2

      - name: bpf-linker
        run: cargo install bpf-linker --git https://github.com/aya-rs/bpf-linker.git

      - uses: taiki-e/install-action@cargo-hack
      - name: Build
        env:
          CARGO_CFG_BPF_TARGET_ARCH: ${{ matrix.bpf_target_arch }}
        run: |
          set -euxo pipefail
          cargo +nightly hack build \
            --target ${{ matrix.target }} \
            -Z build-std=core \
            --package aya-ebpf \
            --package aya-log-ebpf \
            --feature-powerset

      - name: Test
        env:
          CARGO_CFG_BPF_TARGET_ARCH: ${{ matrix.bpf_target_arch }}
          RUST_BACKTRACE: full
        run: |
          set -euxo pipefail
          cargo hack test \
            --doc \
            --package aya-ebpf \
            --package aya-log-ebpf \
            --feature-powerset

  run-integration-test:
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-apple-darwin
            # macos-14 is arm64[0] which doesn't support nested
            # virtualization[1].
            #
            # [0] https://github.com/actions/runner-images#available-images
            #
            # [1] https://docs.github.com/en/actions/using-github-hosted-runners/about-github-hosted-runners/about-github-hosted-runners#limitations-for-arm64-macos-runners
            os: macos-13
          - target: x86_64-unknown-linux-gnu
            # We don't use ubuntu-latest because we care about the apt packages available.
            os: ubuntu-22.04
    runs-on: ${{ matrix.os }}
    steps:
      - uses: actions/checkout@v4
        with:
          submodules: recursive

      - name: Install prerequisites
        if: runner.os == 'Linux'
        # ubuntu-22.04 comes with clang 13-15[0]; support for signed and 64bit
        # enum values was added in clang 15[1] which isn't in `$PATH`.
        #
        # gcc-multilib provides at least <asm/types.h> which is referenced by libbpf.
        #
        # [0] https://github.com/actions/runner-images/blob/main/images/ubuntu/Ubuntu2204-Readme.md
        #
        # [1] https://github.com/llvm/llvm-project/commit/dc1c43d
        run: |
          set -euxo pipefail
          sudo apt update
          sudo apt -y install gcc-multilib lynx qemu-system-{arm,x86}
          echo /usr/lib/llvm-15/bin >> $GITHUB_PATH

      - name: Install prerequisites
        if: runner.os == 'macOS'
        # The curl shipped on macOS doesn't contain
        # https://github.com/curl/curl/commit/85efbb92b8e6679705e122cee45ce76c56414a3e which is
        # needed for proper handling of `--etag-{compare,save}`.
        #
        # The tar shipped on macOS doesn't support --wildcards, so we need GNU tar.
        #
        # The clang shipped on macOS doesn't support BPF, so we need LLVM from brew.
        run: |
          set -euxo pipefail
          brew update
          # https://github.com/actions/setup-python/issues/577
          find /usr/local/bin -type l -exec sh -c 'readlink -f "$1" \
          | grep -q ^/Library/Frameworks/Python.framework/Versions/' _ {} \; -exec rm -v {} \;
          brew install --formula curl dpkg gnu-tar llvm lynx pkg-config qemu
          echo $(brew --prefix curl)/bin >> $GITHUB_PATH
          echo $(brew --prefix gnu-tar)/libexec/gnubin >> $GITHUB_PATH
          echo $(brew --prefix llvm)/bin >> $GITHUB_PATH

      - uses: dtolnay/rust-toolchain@nightly
        with:
          components: rust-src

      # Installed *after* nightly so it is the default.
      - uses: dtolnay/rust-toolchain@stable
        with:
          targets: aarch64-unknown-linux-musl,x86_64-unknown-linux-musl

      - uses: Swatinem/rust-cache@v2

      - name: Install libLLVM
        # Download libLLVM from Rust CI to ensure that the libLLVM version
        # matches exactly with the version used by the current Rust nightly. A
        # mismatch between libLLVM (used by bpf-linker) and Rust's LLVM version
        # can lead to linking issues.
        run: |
          set -euxo pipefail
          # Get the partial SHA from Rust nightly.
          rustc_sha=$(rustc +nightly --version | grep -oE '[a-f0-9]{7,40}')
          # Get the full SHA from GitHub.
          rustc_sha=$(curl -sfSL https://api.github.com/repos/rust-lang/rust/commits/$rustc_sha \
            --header 'authorization: Bearer ${{ secrets.GITHUB_TOKEN }}' \
            --header 'content-type: application/json' \
            | jq -r '.sha')
          mkdir -p /tmp/rustc-llvm
          curl -sfSL https://ci-artifacts.rust-lang.org/rustc-builds/$rustc_sha/rust-dev-nightly-${{ matrix.target }}.tar.xz | \
            tar -xJ --strip-components 2 -C /tmp/rustc-llvm
          echo /tmp/rustc-llvm/bin >> $GITHUB_PATH

      - name: bpf-linker
        # NB: rustc doesn't ship libLLVM.so on macOS, so disable proxying (default feature). We also
        # --force so that bpf-linker gets always relinked against the latest LLVM downloaded above.
        #
        # Do this on all system (not just macOS) to avoid relying on rustc-provided libLLVM.so.
        run: cargo install --force bpf-linker --git https://github.com/aya-rs/bpf-linker.git --no-default-features

      - name: Cache test cache
        uses: actions/cache@v4
        with:
          path: test/.tmp
          key: ${{ runner.arch }}-${{ runner.os }}-test-cache

      - name: Download debian kernels
        if: runner.arch == 'ARM64'
        # TODO: enable tests on kernels before 6.0.
        run: .github/scripts/download_kernel_images.sh test/.tmp/debian-kernels/arm64 arm64 6.1 6.10

      - name: Download debian kernels
        if: runner.arch == 'X64'
        # TODO: enable tests on kernels before 6.0.
        run: .github/scripts/download_kernel_images.sh test/.tmp/debian-kernels/amd64 amd64 6.1 6.10

      - name: Extract debian kernels
        run: |
          set -euxo pipefail
          find test/.tmp -name '*.deb' -print0 | xargs -t -0 -I {} \
            sh -c "dpkg --fsys-tarfile {} | tar -C test/.tmp --wildcards --extract '*vmlinuz*' --file -"

      - name: Run local integration tests
        if: runner.os == 'Linux'
        run: cargo xtask integration-test local

      - name: Run virtualized integration tests
        run: |
          set -euxo pipefail
          find test/.tmp -name 'vmlinuz-*' -print0 | xargs -t -0 \
            cargo xtask integration-test vm --cache-dir test/.tmp --github-api-token ${{ secrets.GITHUB_TOKEN }}

  # Provides a single status check for the entire build workflow.
  # This is used for merge automation, like Mergify, since GH actions
  # has no concept of "when all status checks pass".
  # https://docs.mergify.com/conditions/#validating-all-status-checks
  build-workflow-complete:
    needs:
      - lint
      - build-test-aya
      - build-test-aya-ebpf
      - run-integration-test
    runs-on: ubuntu-latest
    steps:
      - name: Build Complete
        run: echo "Build Complete"