cpp.yml

name: C++ SDK

on:
  push:
    branches: ['main']
    paths: ['src/cc/flwr/**']
  pull_request:
    branches: ['main']
    paths: ['src/cc/flwr/**']

jobs:
  build_and_test:
    name: Build and test
    runs-on: ubuntu-22.04

    steps:
    - uses: actions/checkout@v4
    - name: Bootstrap
      uses: ./.github/actions/bootstrap

    - name: Cache restore SDK build
      uses: actions/cache/restore@v4
      with:
        path: build/
        key: ${{ runner.os }}-sdk-build

    - name: Cache restore example build
      uses: actions/cache/restore@v4
      with:
        path: examples/quickstart-cpp/build/
        key: ${{ runner.os }}-example-build

    - name: Install Dependencies
      run: |
        sudo apt-get update
        sudo apt-get install -y clang-format cmake g++ clang-tidy cppcheck

    - name: Check source Formatting
      run: |
        find src/cc/flwr/src -name '*.cc' | xargs clang-format -i
        git diff --exit-code

    - name: Check header Formatting
      run: |
        find src/cc/flwr/include -name '*.h' -not -path "src/cc/flwr/include/flwr/*" | xargs clang-format -i
        git diff --exit-code

    - name: Build
      run: |
        mkdir -p build
        cd build
        cmake -DCMAKE_EXPORT_COMPILE_COMMANDS=ON ../src/cc/flwr
        make

    - name: Run clang-tidy
      run: |
        cd build
        find ../src/cc/flwr/src -name '*.cc' | xargs clang-tidy

    - name: Run cppcheck
      run: |
        cd build
        cppcheck --enable=all -I../src/cc/flwr/include ../src/cc/flwr/src

    - name: End-to-end test
      run: |
        cd examples/quickstart-cpp
        cmake -DUSE_LOCAL_FLWR=ON -S . -B build
        cmake --build build
        pip install ../..
        timeout 3m flower-superlink --insecure &
        sleep 10
        timeout 2m build/flwr_client 0 127.0.0.1:9092 &
        sleep 3
        timeout 2m build/flwr_client 1 127.0.0.1:9092 &
        sleep 3
        flower-server-app server:app --insecure &
        pid=$!
        wait $pid
        res=$?
        if [[ "$res" = "0" ]];
          then echo "Training worked correctly" && exit 0;
          else echo "Training had an issue" && exit 1;
        fi

    - name: Cache save SDK build
      uses: actions/cache/save@v4
      if: github.ref_name == 'main'
      with:
        path: build/
        key: ${{ runner.os }}-sdk-build

    - name: Cache save example build
      uses: actions/cache/save@v4
      if: github.ref_name == 'main'
      with:
        path: examples/quickstart-cpp/build/
        key: ${{ runner.os }}-example-build