version: 2.1

workflows:
  object-introspection:
    jobs:
      - lint

      - build:
          name: build-gcc
          cc: /usr/bin/gcc
          cxx: /usr/bin/g++
          warnings_as_errors: "OFF"
      - test:
          name: test-gcc
          requires:
            - build-gcc
      - test:
          name: test-type-graph-gcc
          requires:
            - build-gcc
          oid_test_args: "-ftype-graph"
          tests_regex: "OidIntegration\\..*"
          exclude_regex: ".*inheritance_polymorphic.*|.*pointers_incomplete_containing_struct|.*arrays_member_int0"
      - test:
          name: test-typed-data-segment-gcc
          requires:
            - build-gcc
          oid_test_args: "-ftyped-data-segment"
          tests_regex: "OidIntegration\\..*"
          exclude_regex: ".*inheritance_polymorphic.*|.*pointers.*|.*arrays_member_int0|.*cycles_.*"
      - coverage:
          name: coverage
          requires:
            - test-gcc
      - coverage:
          name: coverage-type-graph
          requires:
            - test-type-graph-gcc
      - coverage:
          name: coverage-typed-data-segment
          requires:
            - test-typed-data-segment-gcc

      - build:
          name: build-clang
          cc: /usr/bin/clang-12
          cxx: /usr/bin/clang++-12
          warnings_as_errors: "ON"
      - test:
          name: test-clang
          requires:
            - build-clang
      - test:
          name: test-type-graph-clang
          requires:
            - build-clang
          oid_test_args: "-ftype-graph"
          tests_regex: "OidIntegration\\..*"
          # Tests disabled due to bad DWARF generated by the old clang compiler in CI
          exclude_regex: ".*inheritance_polymorphic.*|.*pointers_incomplete_containing_struct|.*arrays_member_int0|.*fbstring.*|.*std_string_*|.*multi_arg_tb_.*|.*ignored_a"

executors:
  ubuntu-docker:
    docker:
      - image: ubuntu:jammy
    resource_class: small
  big-boy:
    machine:
      image: ubuntu-2204:2022.10.2
    resource_class: 2xlarge

jobs:
  lint:
    executor: ubuntu-docker
    steps:
      - run:
          name: Install dependencies
          command: |
            apt-get update
            apt-get install -y \
              clang-format \
              git \
              python3-pip
            # click broke semver with 8.1.0, causing issues for black
            pip install click==8.0.0 black isort
      - checkout
      - run:
          name: clang-format
          command: |
            git ls-files '*.cpp' '*.h' | xargs clang-format --fallback-style=Google -i
            git ls-files '*.py' | xargs black
            git ls-files '*.py' | xargs isort
            git diff --exit-code
      - run:
          name: python linting
          command: |
            black --check --diff test/
            isort --check --diff test/

  build:
    # TODO this job could be run in Docker
    executor: big-boy
    parameters:
      cc:
        type: string
      cxx:
        type: string
      warnings_as_errors:
        type: string
    environment:
      CC: << parameters.cc >>
      CXX: << parameters.cxx >>
    working_directory:
      /tmp/object-introspection
    steps:
      - run:
          name: Install dependencies
          command: |
            sudo apt-get update
            sudo apt-get install -y \
              bison \
              build-essential \
              clang-12 \
              cmake \
              flex \
              gawk \
              libboost-all-dev \
              libbz2-dev \
              libcap2-bin \
              libclang-12-dev \
              libcurl4-gnutls-dev \
              libdouble-conversion-dev \
              libdw-dev \
              libfmt-dev \
              libgflags-dev \
              libgmock-dev \
              libgoogle-glog-dev \
              libgtest-dev \
              libjemalloc-dev \
              libmsgpack-dev \
              libzstd-dev \
              llvm-12-dev \
              ninja-build \
              pkg-config \
              python3-setuptools
            pip3 install toml
          environment:
            DEBIAN_FRONTEND: noninteractive
      - checkout
      - run:
          name: Build
          command: |
            cmake -G Ninja -B build/ -DWITH_FLAKY_TESTS=Off -DCODE_COVERAGE=On -DWARNINGS_AS_ERRORS=<< parameters.warnings_as_errors >>
            cmake --build build/
            # Testing rubbish:
            cp test/ci.oid.toml build/testing.oid.toml
      - persist_to_workspace:
          root: .
          paths:
            - build/*
            - extern/*
            - types/*

  test:
    executor: big-boy
    parameters:
      oid_test_args:
        type: string
        default: ""
      tests_regex:
        type: string
        default: ".*"
      exclude_regex:
        type: string
        default: ""
    working_directory:
      /tmp/object-introspection
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Install dependencies
          command: |
            sudo apt-get update
            sudo apt-get install -y \
              clang-12 \
              libboost-all-dev \
              libgflags-dev \
              llvm-12-dev \
              libfmt-dev \
              libjemalloc-dev
      - run:
          name: Test
          environment:
            # disable drgn multithreading as tests are already run in parallel
            OMP_NUM_THREADS: 1
          command: |
            echo 0 | sudo tee /proc/sys/kernel/yama/ptrace_scope
            OID_TEST_ARGS='<< parameters.oid_test_args >>' ctest \
              --test-dir build/test/ \
              --test-action Test \
              -j 16 \
              --tests-regex '<< parameters.tests_regex >>' \
              --exclude-regex '<< parameters.exclude_regex >>' \
              --no-compress-output \
              --output-on-failure \
              --schedule-random \
              --timeout 60 \
              --repeat until-pass:2 \
              --output-junit results.xml
      - store_test_results:
          path: build/test/results.xml
      - persist_to_workspace:
          # Save code coverage data
          root: .
          paths:
            - build/*

  coverage:
    executor: ubuntu-docker
    working_directory:
      /tmp/object-introspection
    steps:
      - run:
          name: Install dependencies
          command: |
            apt-get update
            apt-get install -y \
              build-essential \
              cpanminus \
              curl \
              git \
              gpg
            # Install lcov 2.0 - required for the "--filter branch" option.
            # This improves C++ branch coverage by excluding compiler-generated
            # branches, which primarily come from exception handling in
            # standard library functions.
            cpanm --notest Capture::Tiny DateTime
            pushd /tmp
            curl -sLO https://github.com/linux-test-project/lcov/releases/download/v2.0/lcov-2.0.tar.gz
            tar -xf lcov-2.0.tar.gz
            cd lcov-2.0
            make install
            popd
      - checkout
      - attach_workspace:
          at: .
      - run:
          name: Code Coverage
          when: always
          command: |
            lcov --capture --directory . --filter branch --no-external --ignore-errors mismatch --ignore-errors source --rc lcov_branch_coverage=1 --output-file coverage.info
            # Empirically, extract-then-remove is faster than remove-then-extract
            lcov --extract coverage.info '/tmp/object-introspection/*' --rc lcov_branch_coverage=1 --output-file coverage.info
            lcov --remove coverage.info '/tmp/object-introspection/build/*' '/tmp/object-introspection/extern/*'  --rc lcov_branch_coverage=1 --output-file coverage.info
            lcov --list --rc lcov_branch_coverage=1 coverage.info

            curl https://keybase.io/codecovsecurity/pgp_keys.asc | gpg --no-default-keyring --keyring trustedkeys.gpg --import
            curl -Os https://uploader.codecov.io/latest/linux/codecov
            curl -Os https://uploader.codecov.io/latest/linux/codecov.SHA256SUM
            curl -Os https://uploader.codecov.io/latest/linux/codecov.SHA256SUM.sig
            gpgv codecov.SHA256SUM.sig codecov.SHA256SUM
            shasum -a 256 -c codecov.SHA256SUM
            chmod +x codecov

            # It appears that codecov wants to scan through all directories
            # other than "build", looking for files to upload, even if we
            # specify a file name on the command line.
            #
            # "extern" is huge and makes uploading the coverage report take
            # forever. Delete it for a speedup.
            rm -rf extern

            ./codecov -Z -f coverage.info -t $CODECOV_TOKEN