config.yml

# https://circleci.com/docs/2.0/
version: 2

images:
  - &rust_image
    # https://hub.docker.com/r/circleci/rust
    image: circleci/rust:1.50.0-buster

jobs:
  checkout_code:
    docker:
      - <<: *rust_image
    steps:
      - checkout
      - run:
          name: Output Rust environment
          command: rustc --version; cargo --version; rustup --version;
      - persist_to_workspace:
          root: .
          paths:
            - .
  check_code_format:
    docker:
      - <<: *rust_image
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Check Rust code format
          command: cargo fmt --all -- --check
  lint_code:
    docker:
      - <<: *rust_image
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Install clippy
          command: rustup component add clippy
      - run:
          name: Lint Rust code, failing on warnings from default linters and warning about cargo manifest linters
          command: cargo clippy -- --deny clippy::all --warn clippy::cargo
  run_tests:
    docker:
      - <<: *rust_image
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Run tests
          command: cargo test
          # CHANGEME: Depending on the type of project built (Use version with --locked for an application. For a library, delete this comment block)
          # name: Run tests (while enforcing Cargo.lock to be up to date)
          # command: cargo test --locked
  audit_dependencies:
    docker:
      - <<: *rust_image
    steps:
      - attach_workspace:
          at: .
      - run:
          name: Set permissions for cache
          command: |
            sudo chown --recursive $(whoami):$(id --name --group) /usr/local/cargo
      - restore_cache:
          keys:
            - cargo-audit-{{ arch }}
      - run:
          name: Install cargo-audit
          command: cargo install cargo-audit
      - save_cache:
          paths:
            - /usr/local/cargo
          key: cargo-audit-{{ arch }}
      - run:
          name: Audit Cargo.lock files for crates with security vulnerabilities
          command: cargo audit

workflows:
  version: 2
  default:
    jobs:
      - checkout_code
      - check_code_format:
          requires:
            - checkout_code
      - lint_code:
          requires:
            - checkout_code
      - run_tests:
          requires:
            - checkout_code
      - audit_dependencies:
          requires:
            - checkout_code