name: Continuous Integration Checks

on: [push, pull_request]

jobs:
  build:
    strategy:
      matrix:
        toolchain: [ stable,
                     nightly,
                     # 1.22.0 is MSRV for rust-lightning in general:
                     1.22.0,
                     # 1.34.2 is Debian stable
                     1.34.2,
                     # 1.39.0 is MSRV for lightning-net-tokio and lightning-block-sync and generates coverage
                     1.39.0]
        include:
          - toolchain: stable
            build-net-tokio: true
          - toolchain: nightly
            build-net-tokio: true
            run-mutagen: true
          - toolchain: 1.39.0
            build-net-tokio: true
            coverage: true
    runs-on: ubuntu-latest
    steps:
      - name: Checkout source code
        uses: actions/checkout@v2
      - name: Install Rust ${{ matrix.toolchain }} toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ matrix.toolchain }}
          override: true
          profile: minimal
      - name: Build on Rust ${{ matrix.toolchain }} with net-tokio
        if: matrix.build-net-tokio
        run: RUSTFLAGS="-C link-dead-code" cargo build --verbose --color always
      - name: Build on Rust ${{ matrix.toolchain }}
        if: "! matrix.build-net-tokio"
        run: RUSTFLAGS="-C link-dead-code" cargo build --verbose  --color always -p lightning
      - name: Build Block Sync Clients on Rust ${{ matrix.toolchain }} with features
        if: matrix.build-net-tokio
        run: |
          cd lightning-block-sync
          RUSTFLAGS="-C link-dead-code" cargo build --verbose --color always --features rest-client
          RUSTFLAGS="-C link-dead-code" cargo build --verbose --color always --features rpc-client
          RUSTFLAGS="-C link-dead-code" cargo build --verbose --color always --features rpc-client,rest-client
          RUSTFLAGS="-C link-dead-code" cargo build --verbose --color always --features rpc-client,rest-client,tokio
          cd ..
      - name: Test on Rust ${{ matrix.toolchain }} with net-tokio
        if: matrix.build-net-tokio
        run: RUSTFLAGS="-C link-dead-code" cargo test --verbose --color always
      - name: Test on Rust ${{ matrix.toolchain }}
        if: "! matrix.build-net-tokio"
        run: RUSTFLAGS="-C link-dead-code" cargo test --verbose --color always  -p lightning
      - name: Run mutagen tests on ${{ matrix.toolchain }}
        if: matrix.run-mutagen
     # Run mutagen on nightly with TheBlueMatt's fork which exits with non-0 status
     # if any mutations resulted in anything except test failures to prevent regressions.
        run: |
          rm -rf mutagen && git clone https://github.com/TheBlueMatt/mutagen
          cargo install --force --path mutagen/mutagen-runner
          cd lightning
          ~/.cargo/bin/cargo-mutagen --features mutation_testing
     # Generate code cov information on Rust 1.39.0
      - name: Install deps for kcov
        if: matrix.coverage
        run: |
          sudo apt-get update
          sudo apt-get -y install binutils-dev libcurl4-openssl-dev zlib1g-dev libdw-dev libiberty-dev
      - name: Install kcov
        if: matrix.coverage
        run: |
          wget https://github.com/SimonKagstrom/kcov/archive/master.tar.gz
          tar xzf master.tar.gz
          cd kcov-master && mkdir build && cd build
          cmake ..
          make
          make install DESTDIR=../../kcov-build
          cd ../.. && rm -rf kcov-master master.tar.gz
      - name: Generate coverage report
        if: matrix.coverage
        run: |
          for file in target/debug/lightning-*; do
            [ -x "${file}" ] || continue;
            mkdir -p "target/cov/$(basename $file)";
            ./kcov-build/usr/local/bin/kcov --exclude-pattern=/.cargo,/usr/lib --verify "target/cov/$(basename $file)" "$file";
          done
      - name: Upload coverage
        if: matrix.coverage
        uses: codecov/codecov-action@v1
        with:
          fail_ci_if_error: true

  fuzz:
    runs-on: ubuntu-latest
    env:
      TOOLCHAIN: stable
    steps:
      - name: Checkout source code
        uses: actions/checkout@v2
      - name: Install Rust ${{ env.TOOLCHAIN }} toolchain
        uses: actions-rs/toolchain@v1
        with:
          toolchain: ${{ env.TOOLCHAIN }}
          override: true
          profile: minimal
      - name: Install dependencies for honggfuzz
        run: |
          sudo apt-get update
          sudo apt-get -y install build-essential binutils-dev libunwind-dev
      - name: Sanity check fuzz targets on Rust ${{ env.TOOLCHAIN }}
        run: cd fuzz && cargo test --verbose --color always
      - name: Run fuzzers
        run: cd fuzz && ./ci-fuzz.sh