# Configuration file for https://circleci.com/gh/angular/angular

# Note: YAML anchors allow an object to be re-used, reducing duplication.
# The ampersand declares an alias for an object, then later the `<<: *name`
# syntax dereferences it.
# See http://blog.daemonl.com/2016/02/yaml.html
# To validate changes, use an online parser, eg.
# http://yaml-online-parser.appspot.com/

# Variables

## IMPORTANT
# If you change the `docker_image` version, also change the `cache_key` suffix and the version of
# `com_github_bazelbuild_buildtools` in the `/WORKSPACE` file.
var_1: &docker_image angular/ngcontainer:0.2.0
var_2: &cache_key v2-angular-{{ .Branch }}-{{ checksum "yarn.lock" }}-0.2.0

# Define common ENV vars
var_3: &define_env_vars
  run: echo "export PROJECT_ROOT=$(pwd)" >> $BASH_ENV

# See remote cache documentation in /docs/BAZEL.md
var_4: &setup-bazel-remote-cache
  run:
    name: Start up bazel remote cache proxy
    command: ~/bazel-remote-proxy -backend circleci://
    background: true

# Settings common to each job
anchor_1: &job_defaults
  working_directory: ~/ng
  docker:
    - image: *docker_image

# After checkout, rebase on top of master.
# Similar to travis behavior, but not quite the same.
# See https://discuss.circleci.com/t/1662
anchor_2: &post_checkout
  post: git pull --ff-only origin "refs/pull/${CIRCLE_PULL_REQUEST//*pull\//}/merge"

version: 2
jobs:
  lint:
    <<: *job_defaults
    steps:
      - checkout:
          <<: *post_checkout

      # Check BUILD.bazel formatting before we have a node_modules directory
      # Then we don't need any exclude pattern to avoid checking those files
      - run: 'buildifier -mode=check $(find . -type f \( -name BUILD.bazel -or -name BUILD \)) ||
              (echo "BUILD files not formatted. Please run ''yarn buildifier''" ; exit 1)'
      # Run the skylark linter to check our Bazel rules
      # deprecated-api is disabled because we use actions.new_file(genfiles_dir)
      # which has no replacement, see https://github.com/bazelbuild/bazel/issues/4858
      - run: 'find . -type f -name "*.bzl" |
              xargs java -jar /usr/local/bin/Skylint_deploy.jar --disable-checks=deprecated-api ||
              (echo -e "\n.bzl files have lint errors. Please run ''yarn skylint''"; exit 1)'

      - restore_cache:
          key: *cache_key

      - run: yarn install --frozen-lockfile --non-interactive
      - run: ./node_modules/.bin/gulp lint

  test:
    <<: *job_defaults
    resource_class: xlarge
    steps:
      - *define_env_vars
      - checkout:
          <<: *post_checkout
      # See remote cache documentation in /docs/BAZEL.md
      - run: .circleci/setup_cache.sh
      - run: sudo cp .circleci/bazel.rc /etc/bazel.bazelrc
      - *setup-bazel-remote-cache

      - restore_cache:
          key: *cache_key

      - run: ls /home/circleci/bazel_repository_cache || true
      - run: bazel info release
      - run: bazel run @yarn//:yarn
      # Use bazel query so that we explicitly ask for all buildable targets to be built as well
      # This avoids waiting for the slowest build target to finish before running the first test
      # See https://github.com/bazelbuild/bazel/issues/4257
      # NOTE: Angular developers should typically just bazel build //packages/... or bazel test //packages/...
      - run: bazel query --output=label //... | xargs bazel test

      # CircleCI will allow us to go back and view/download these artifacts from past builds.
      # Also we can use a service like https://buildsize.org/ to automatically track binary size of these artifacts.
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/hello_world/bundle.min.js
          destination: packages/core/test/bundling/hello_world/bundle.min.js
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/todo/bundle.min.js
          destination: packages/core/test/bundling/todo/bundle.min.js
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/hello_world/bundle.min.js.br
          destination: packages/core/test/bundling/hello_world/bundle.min.js.br
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/todo/bundle.min.js.br
          destination: packages/core/test/bundling/todo/bundle.min.js.br

      - save_cache:
          key: *cache_key
          paths:
            - "node_modules"
            - "~/bazel_repository_cache"

  # This job exists only for backwards-compatibility with old scripts and tests
  # that rely on the pre-Bazel dist/packages-dist layout.
  # It duplicates some work with the job above: we build the bazel packages
  # twice. Even though we have a remote cache, these jobs will typically run in
  # parallel so up-to-date outputs will not be available at the time the build
  # starts.
  # No new jobs should depend on this one.
  build-packages-dist:
    <<: *job_defaults
    resource_class: xlarge
    steps:
      - *define_env_vars
      - checkout:
          <<: *post_checkout
      # See remote cache documentation in /docs/BAZEL.md
      - run: .circleci/setup_cache.sh
      - run: sudo cp .circleci/bazel.rc /etc/bazel.bazelrc
      - *setup-bazel-remote-cache

      - run: bazel run @yarn//:yarn
      - run: scripts/build-packages-dist.sh

      # Save the npm packages from //packages/... for other workflow jobs to read
      # https://circleci.com/docs/2.0/workflows/#using-workspaces-to-share-data-among-jobs
      - persist_to_workspace:
          root: dist
          paths:
            - packages-dist

  # We run the integration tests outside of Bazel for now.
  # They are a separate workflow job so that they can be easily re-run.
  # When the tests are ported to bazel test targets, they should move to the "test"
  # job above, as part of the bazel test command. That has flaky_test_attempts so the
  # need to re-run manually should be alleviated.
  # See comments inside the integration/run_tests.sh script.
  integration_test:
    <<: *job_defaults
    steps:
      - *define_env_vars
      - checkout:
          <<: *post_checkout
      - attach_workspace:
          at: dist
      - run: xvfb-run --auto-servernum ./integration/run_tests.sh

  # This job updates the content of repos like github.com/angular/core-builds
  # for every green build on angular/angular.
  publish_snapshot:
    <<: *job_defaults
    steps:
      - checkout:
          <<: *post_checkout
      - attach_workspace:
          at: dist
      # CircleCI has a config setting to force SSH for all github connections
      # This is not compatible with our mechanism of using a Personal Access Token
      # Clear the global setting
      - run: git config --global --unset "url.ssh://git@github.com.insteadof"
      - run: ./scripts/ci/publish-build-artifacts.sh

  aio_monitoring:
    <<: *job_defaults
    steps:
      - checkout:
          <<: *post_checkout
      - restore_cache:
          key: *cache_key
      - run: xvfb-run --auto-servernum ./aio/scripts/test-production.sh

workflows:
  version: 2
  default_workflow:
    jobs:
      - lint
      - test
      - build-packages-dist
      - integration_test:
          requires:
            - build-packages-dist
      - publish_snapshot:
          # Note: no filters on this job because we want it to run for all upstream branches
          # We'd really like to filter out pull requests here, but not yet available:
          # https://discuss.circleci.com/t/workflows-pull-request-filter/14396/4
          # Instead, the publish-build-artifacts.sh script just terminates when
          # CIRCLE_PR_NUMBER is set.
          requires:
            # Only publish if tests and integration tests pass
            - test
            - integration_test
            # Get the artifacts to publish from the build-packages-dist job
            # since the publishing script expects the legacy outputs layout.
            - build-packages-dist

  aio_monitoring:
    jobs:
      - aio_monitoring
    triggers:
      - schedule:
          cron: "0 0 * * *"
          filters:
            branches:
              only:
                - master