run-clang-tidy.yml

name: Run clang-tidy

on:
  workflow_call:

jobs:
  clang-tidy-scan:
    runs-on: ubuntu-20.04
    continue-on-error: true

    steps:
      - name: Install dependencies
        run: |
          sudo apt-get update
          sudo apt-get install ninja-build doxygen graphviz libcurl4-openssl-dev libprotobuf-dev libprotoc-dev protobuf-compiler libhdf5-dev qt5-default
          sudo apt-get install clang-tidy

      - name: Display version info
        run: |
          echo $(g++ --version)
          echo $(clang --version)
          echo $(cmake --version)
          echo $(clang-tidy --version)

      # https://github.com/actions/download-artifact
      - name: Download the built directory
        uses: actions/download-artifact@v3
        with:
          name: ecal-dir

      # replace the working directory
      - name: Extract the tarball archive
        run: mv ecal.tar.gz ../. && cd .. && rm -rf ecal && tar -xzf ecal.tar.gz && cd ecal

      # https://github.com/Ana06/get-changed-files
      - name: Detect the changeset
        id: changed_files
        uses: Ana06/get-changed-files@v2.1.0

      # see: ./build.sh --help
      - name: Run clang-tidy on the changeset
        id: suffix
        run: |
          build_linux/clang-tidy/build.sh -a -b ../../../_build -f ${{ steps.changed_files.outputs.added_modified }}

      # https://github.com/actions/upload-artifact
      # If make or clang-tidy is never called, artifact upload will fail (no log files) with just a warning.
      - name: Archive logs as artifact
        uses: actions/upload-artifact@v3
        with:
          name: clang_tidy_log_${{ steps.suffix.outputs.timestamp }}
          path: ~/work/ecal/_build/clang_tidy_log_*.txt
          if-no-files-found: warn

      - name: Detect number of clang-tidy warnings
        id: num_warnings
        run: |
          NUM_WARNINGS=0
          NUM_LOG_FILES=$(ls ~/work/ecal/_build/clang_tidy_log_*.txt 2> /dev/null | wc -l)
          if [[ ${NUM_LOG_FILES} -gt 0 ]]
          then
            NUM_WARNINGS=$(grep -oE "\w+\.\w+:\w+:\w+:\s?warning:\s?.*" -- ~/work/ecal/_build/clang_tidy_log_*.txt | wc -l)
          fi
          echo "::set-output name=value::${NUM_WARNINGS}"

      # https://github.com/actions/github-script
      - name: Check clang-tidy warnings
        if: ${{ steps.num_warnings.outputs.value > 0 }}
        uses: actions/github-script@v6
        with:
          script: |
            core.setFailed('number of clang-tidy warnings: ${{ steps.num_warnings.outputs.value}}')