A CircleCI2.0 workflow config

circleci2.0-workflow.yml

version: 2.0

references:
  container_config: &container_config
    docker:
      - image: circleci/ruby:2.3.7-node-browsers
        environment:
          BUNDLE_JOBS: 3
          BUNDLE_RETRY: 3
          BUNDLE_PATH: vendor/bundle
          RAILS_ENV: test
      - image: circleci/postgres:9.6-alpine
        environment:
          POSTGRES_USER: postgres
          POSTGRES_DB: pg
          POSTGRES_PASSWORD: 12345678
    working_directory: ~/statementdog

  restore_repo: &restore_repo
    restore_cache:
      key: v1-repo-{{ .Environment.CIRCLE_SHA1 }} # CIRCLE_SHA1: The SHA1 hash of the last commit of the current build.

  restore_bundle: &restore_bundle
    restore_cache:
      # 照 key 的順序去找 cache，如果第一個找不到，則用第二個 key
      # 第二個 key 沒有指定 checksum，circleCI 會去找最近且開頭是 v1-gem- 的 cache
      keys:
        - v1-gem-{{ checksum "Gemfile.lock" }}
        - v1-gem-

  restore_yarn: &restore_yarn
    restore_cache:
      keys:
        - yarn-{{ checksum "yarn.lock" }}
        - yarn-

  wait_for_db: &wait_for_db
    run:
      name: Wait for DB
      command: dockerize -wait tcp://localhost:5432 -timeout 1m

  db_setup: &db_setup
    run:
      name: Database setup
      command: bundle exec rails db:schema:load --trace

jobs:
  checkout_code:
    <<: *container_config
    steps:
      - *restore_repo
      - checkout
      - run:
          name: Which bundler?
          command: bundle -v
      - save_cache:
          key: v1-repo-{{ .Environment.CIRCLE_SHA1 }}
          paths:
            - ~/statementdog

  bundle_dependencies:
    <<: *container_config
    steps:
      - *restore_repo
      - *restore_bundle
      - run:
          name: Bundle Install
          command: bundle check || bundle install
      - save_cache:
          key: v1-gem-{{ checksum "Gemfile.lock" }}
          paths:
            - vendor/bundle

  yarn_dependencies:
    <<: *container_config
    steps:
      - *restore_repo
      - *restore_yarn
      - run:
          name: Yarn Install
          command: yarn install --cache-folder ~/.cache/yarn
      - save_cache:
          key: yarn-{{ checksum "yarn.lock" }}
          paths:
            - ~/.cache/yarn

  run_unit_tests:
    <<: *container_config
    steps:
      - *restore_repo
      - *restore_bundle
      - *wait_for_db
      - *db_setup
      - run:
          name: Check syntax
          command: 'script/syntax_check.sh'
      - run: mkdir ~/rspec
      - run: mkdir /tmp/test-results
      - run:
          name: Run Unit tests
          environment:
            CIRCLE_TEST_REPORTS: /tmp/test-results
          command: |
            bundle exec rspec --color \
            --profile 10 \
            --format progress \
            --format RspecJunitFormatter \
            --out ~/rspec/rspec.xml \
            $(circleci tests glob "spec/{models,helpers,controllers,views,queries,uploaders,services,workers,work_dispatchers,lib,libs,mailers}/**/*_spec.rb")
      - store_test_results:
          path: ~/rspec
      - store_artifacts:
          path: /tmp/test-results

  run_integration_tests:
    <<: *container_config
    steps:
      - *restore_repo
      - *restore_bundle
      - *wait_for_db
      - *db_setup
      - run: mkdir ~/rspec
      - run: mkdir /tmp/test-results
      - run:
          name: Run Integration tests
          command: |
            bundle exec rspec --color \
            --profile 10 \
            --format progress \
            --format RspecJunitFormatter \
            --out ~/rspec/rspec.xml \
            $(circleci tests glob "spec/features/**/*_spec.rb" "spec/requests/**/*_spec.rb")
      - store_test_results:
          path: ~/rspec


  deploy:
    <<: *container_config
    steps:
      - *restore_repo
      - *restore_bundle
      - run:
          name: Deploy Master to AWS
          command: bundle exec cap production deploy

workflows:
  version: 2
  build_and_test:
    jobs:
      - checkout_code
      - bundle_dependencies:
          requires:
            - checkout_code
      - yarn_dependencies:
          requires:
            - checkout_code
      - run_unit_tests:
          requires:
            - bundle_dependencies
      - run_integration_tests:
          requires:
            - yarn_dependencies
            - bundle_dependencies
      - deploy:
          requires:
            - run_unit_tests
            - run_integration_tests
          filters:
            branches:
              only: master