angular-cn/.circleci/config.yml

# 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/

# CircleCI configuration version
# Version 2.1 allows for extra config reuse features
# https://circleci.com/docs/2.0/reusing-config/#getting-started-with-config-reuse
version: 2.1

# We don't want to include the current branch name in the cache key because that would prevent
# PRs from being able to restore the cache since the branch names are always different for PRs.
# The cache key should only consist of dynamic values that change whenever something in the
# cache changes. For example:
# 1) yarn lock file changes --> cached "node_modules" are different.
# 2) bazel repository definitions change --> cached bazel repositories are different.
# Windows needs its own cache key because binaries in node_modules are different.
# **NOTE 1 **: If you change the cache key prefix, also sync the cache_key_fallback to match.
# **NOTE 2 **: Keep the static part of the cache key as prefix to enable correct fallbacks.
# See https://circleci.com/docs/2.0/caching/#restoring-cache for how prefixes work in CircleCI.
var_3: &cache_key v7-angular-node-12-{{ checksum ".bazelversion" }}-{{ checksum "yarn.lock" }}-{{ checksum "WORKSPACE" }}-{{ checksum "packages/bazel/package.bzl" }}-{{ checksum "aio/yarn.lock" }}
# We invalidate the cache if the Bazel version changes because otherwise the `bazelisk` cache
# folder will contain all previously used versions and ultimately cause the cache restoring to
# be slower due to its growing size.
var_4: &cache_key_fallback v7-angular-node-12-{{ checksum ".bazelversion" }}
var_3_win: &cache_key_win v7-angular-win-node-12-{{ checksum ".bazelversion" }}-{{ checksum "yarn.lock" }}-{{ checksum "WORKSPACE" }}-{{ checksum "packages/bazel/package.bzl" }}-{{ checksum "aio/yarn.lock" }}
var_4_win: &cache_key_win_fallback v7-angular-win-node-12-{{ checksum ".bazelversion" }}

# Cache key for the `components-repo-unit-tests` job. **Note** when updating the SHA in the
# cache keys also update the SHA for the "COMPONENTS_REPO_COMMIT" environment variable.
var_5: &components_repo_unit_tests_cache_key v7-angular-components-f428c00465dfcf8a020237f22532480eedbd2cb6
var_6: &components_repo_unit_tests_cache_key_fallback v7-angular-components-

# Workspace initially persisted by the `setup` job, and then enhanced by `build-npm-packages` and
# `build-ivy-npm-packages`.
# https://circleci.com/docs/2.0/workflows/#using-workspaces-to-share-data-among-jobs
# https://circleci.com/blog/deep-diving-into-circleci-workspaces/
var_7: &workspace_location ~/

# Filter to run a job on builds for pull requests only.
var_8: &only_on_pull_requests
  filters:
    branches:
      only:
        - /pull\/\d+/

# Filter to skip a job on builds for pull requests.
var_9: &skip_on_pull_requests
  filters:
    branches:
      ignore:
        - /pull\/\d+/

# Filter to run a job on builds for the master branch only.
var_10: &only_on_master
  filters:
    branches:
      only:
        - master

# Executor Definitions
# https://circleci.com/docs/2.0/reusing-config/#authoring-reusable-executors
# **NOTE 1**: Pin to exact images using an ID (SHA). See https://circleci.com/docs/2.0/circleci-images/#using-a-docker-image-id-to-pin-an-image-to-a-fixed-version.
#             (Using the tag in not necessary when pinning by ID, but include it anyway for documentation purposes.)
# **NOTE 2**: If you change the version of the docker images, also change the `cache_key` suffix.
executors:
  default-executor:
    parameters:
      resource_class:
        type: string
        default: medium
    docker:
      - image: circleci/node:12.14.1@sha256:f9de24fc0017059cc42ef7d07db060008af65a98b1f0cdd1ef3339213226bf6d
    resource_class: << parameters.resource_class >>
    working_directory: ~/ng

  windows-executor:
    working_directory: ~/ng
    resource_class: windows.medium
    # CircleCI windows VMs do have the GitBash shell available:
    # https://github.com/CircleCI-Public/windows-preview-docs#shells
    # But in this specific case we really should not use it because Bazel must not be ran from
    # GitBash. These issues discuss why:
    # https://github.com/bazelbuild/bazel/issues/5751
    # https://github.com/bazelbuild/bazel/issues/5724#issuecomment-410194038
    # https://github.com/bazelbuild/bazel/issues/6339#issuecomment-441600879
    shell: powershell.exe -ExecutionPolicy Bypass
    machine:
      # Windows preview image that includes the following:
      # - Visual Studio 2019 build tools
      # - Node 12
      # - yarn 1.17
      # - Python 3 3.7.4
      image: windows-server-2019-vs2019:201908-02

# Command Definitions
# https://circleci.com/docs/2.0/reusing-config/#authoring-reusable-commands
commands:
  custom_attach_workspace:
    description: Attach workspace at a predefined location
    steps:
      - attach_workspace:
          at: *workspace_location

  # Install shared libs used by Chrome that is either provisioned by
  # rules_webtesting or by puppeteer.
  install_chrome_libs:
    description: Install shared Chrome libs
    steps:
      - run:
          name: Install shared Chrome libs
          command: |
            sudo apt-get update
            # Install GTK+ graphical user interface (libgtk-3-0), advanced linux sound architecture (libasound2)
            # and network security service libraries (libnss3) & X11 Screen Saver extension library (libssx1)
            # which are dependencies of chrome & needed for karma & protractor headless chrome tests.
            # This is a very small install which takes around 7s in comparing to using the full
            # circleci/node:x.x.x-browsers image.
            sudo apt-get -y install libgtk-3-0 libasound2 libnss3 libxss1

  # Install java runtime which is required by some integration tests such as
  # //integration:hello_world__closure_test, //integration:i18n_test and
  # //integration:ng_elements_test to run the closure compiler
  install_java:
    description: Install java
    steps:
      - run:
          name: Install java
          command: |
            sudo apt-get update
            # Install java runtime
            sudo apt-get install default-jre

  # Initializes the CI environment by setting up common environment variables.
  init_environment:
    description: Initializing environment (setting up variables)
    steps:
      - run:
          name: Set up environment
          environment:
              CIRCLE_GIT_BASE_REVISION: << pipeline.git.base_revision >>
              CIRCLE_GIT_REVISION: << pipeline.git.revision >>
          command: ./.circleci/env.sh
      - run:
          # Configure git as the CircleCI `checkout` command does.
          # This is needed because we only checkout on the setup job.
          # Add GitHub to known hosts
          name: Configure git
          command: |
            mkdir -p ~/.ssh
            echo 'github.com ssh-rsa AAAAB3NzaC1yc2EAAAABIwAAAQEAq2A7hRGmdnm9tUDbO9IDSwBK6TbQa+PXYPCPy6rbTrTtw7PHkccKrpp0yVhp5HdEIcKr6pLlVDBfOLX9QUsyCOV0wzfjIJNlGEYsdlLJizHhbn2mUjvSAHQqZETYP81eFzLQNnPHt4EVVUh7VfDESU84KezmD5QlWpXLmvU31/yMf+Se8xhHTvKSCZIFImWwoG6mbUoWf9nzpIoaSjB+weqqUUmpaaasXVal72J+UX2B+2RPW3RcT0eOzQgqlJL3RKrTJvdsjE3JEAvGq3lGHSZXy28G3skua2SmVi/w4yCE6gbODqnTWlg7+wC604ydGXA8VJiS5ap43JXiUFFAaQ==' >> ~/.ssh/known_hosts
            git config --global url."ssh://git@github.com".insteadOf "https://github.com" || true
            git config --global gc.auto 0 || true

  init_saucelabs_environment:
    description: Sets up a domain that resolves to the local host.
    steps:
      - run:
          name: Preparing environment for running tests on Sauce Labs.
          command: |
            # For SauceLabs jobs, we set up a domain which resolves to the machine which launched
            # the tunnel. We do this because devices are sometimes not able to properly resolve
            # `localhost` or `127.0.0.1` through the SauceLabs tunnel. Using a domain that does not
            # resolve to anything on SauceLabs VMs ensures that such requests are always resolved
            # through the tunnel, and resolve to the actual tunnel host machine (i.e. the CircleCI VM).
            # More context can be found in: https://github.com/angular/angular/pull/35171.
            setPublicVar SAUCE_LOCALHOST_ALIAS_DOMAIN "angular-ci.local"
            setSecretVar SAUCE_ACCESS_KEY $(echo $SAUCE_ACCESS_KEY | rev)
      - run:
          # Sets up a local domain in the machine's host file that resolves to the local
          # host. This domain is helpful in Sauce Labs tests where devices are not able to
          # properly resolve `localhost` or `127.0.0.1` through the sauce-connect tunnel.
          name: Setting up alias domain for local host.
          command: echo "127.0.0.1 $SAUCE_LOCALHOST_ALIAS_DOMAIN" | sudo tee -a /etc/hosts

  # Normally this would be an individual job instead of a command.
  # But startup and setup time for each individual windows job are high enough to discourage
  # many small jobs, so instead we use a command for setup unless the gain becomes significant.
  setup_win:
    description: Setup windows node environment
    steps:
      # Use the Linux workspace directly, as it already has checkout, rebased and node modules.
      - custom_attach_workspace
      # Install Bazel pre-requisites that aren't in the preconfigured CircleCI Windows VM.
      - run: ./.circleci/windows-env.ps1
      - run: node --version
      - run: yarn --version
      - restore_cache:
          keys:
            - *cache_key_win
            - *cache_key_win_fallback
      # Reinstall to get windows binaries.
      - run: yarn install --frozen-lockfile --non-interactive
      # Install @bazel/bazelisk globally and use that for the first run.
      # Workaround for https://github.com/bazelbuild/rules_nodejs/issues/894
      # NB: the issue was for @bazel/bazel but the same problem applies to @bazel/bazelisk
      - run: yarn global add @bazel/bazelisk@$env:BAZELISK_VERSION
      - run: bazelisk info

  notify_webhook_on_fail:
    description: Notify a webhook about failure
    parameters:
      # `webhook_url_env_var` are secret env vars defined in CircleCI project settings.
      # The URLs come from https://angular-team.slack.com/apps/A0F7VRE7N-circleci.
      webhook_url_env_var:
        type: env_var_name
    steps:
      - run:
          when: on_fail
          command: |
            notificationJson="{\"text\":\":x: \`$CIRCLE_JOB\` job for $CIRCLE_BRANCH branch failed on build $CIRCLE_BUILD_NUM: $CIRCLE_BUILD_URL :scream:\"}"
            curl --request POST --header "Content-Type: application/json" --data "$notificationJson" ${<< parameters.webhook_url_env_var >>}

# Job definitions
# Jobs can include parameters that are passed in the workflow job invocation.
# https://circleci.com/docs/2.0/reusing-config/#authoring-parameterized-jobs
jobs:
  setup:
    executor: default-executor
    steps:
      - checkout
      - init_environment
      - run:
          name: Rebase PR on target branch
          # After checkout, rebase on top of target branch.
          command: >
            if [[ -n "${CIRCLE_PR_NUMBER}" ]]; then
              # User is required for rebase.
              git config user.name "angular-ci"
              git config user.email "angular-ci"
              # Rebase PR on top of target branch.
              node tools/rebase-pr.js
            else
              echo "This build is not over a PR, nothing to do."
            fi
      # This cache is saved in the build-npm-packages so that Bazel cache is also included.
      - restore_cache:
          keys:
            - *cache_key
            - *cache_key_fallback
      - run:
          name: Running Yarn install
          command: yarn install --frozen-lockfile --non-interactive
          # Yarn's requests sometimes take more than 10mins to complete.
          no_output_timeout: 45m
      - run: yarn --cwd aio install --frozen-lockfile --non-interactive
      # Make the bazel directories and add a file to them if they don't exist already so that
      # persist_to_workspace does not fail.
      - run: |
          if [ ! -d ~/bazel_repository_cache ]; then
            mkdir ~/bazel_repository_cache
            touch ~/bazel_repository_cache/MARKER
          fi
      # Persist any changes at this point to be reused by further jobs.
      # **NOTE**: To add new content to the workspace, always persist on the same root.
      - persist_to_workspace:
          root: *workspace_location
          paths:
            - ./ng
            - ./bazel_repository_cache

  lint:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment

      - run: yarn -s tslint
      - run: yarn -s ng-dev format changed $CI_GIT_BASE_REVISION --check
      - run: yarn -s ts-circular-deps:check
      - run: yarn -s ng-dev pullapprove verify
      - run: yarn -s ng-dev commit-message validate-range --range $CI_COMMIT_RANGE

  test:
    executor:
      name: default-executor
      # Now that large integration tests are running locally in parallel (they can't run on RBE yet
      # as they require network access for yarn install), this test is running out of memory
      # consistently with the xlarge machine.
      # TODO: switch back to xlarge once integration tests are running on remote-exec
      resource_class: 2xlarge+
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
      - install_java
      - run:
          command: yarn bazel test //... --build_tag_filters=-ivy-only --test_tag_filters=-ivy-only
          no_output_timeout: 20m

  # Temporary job to test what will happen when we flip the Ivy flag to true
  test_ivy_aot:
    executor:
      name: default-executor
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
      # We need to explicitly specify the --symlink_prefix option because otherwise we would
      # not be able to easily find the output bin directory when uploading artifacts for size
      # measurements.
      - run:
          command: yarn test-ivy-aot //... --symlink_prefix=dist/
          no_output_timeout: 20m

        # Publish bundle artifacts which will be used to calculate the size change. **Note**: Make
        # sure that the size plugin from the Angular robot fetches the artifacts from this CircleCI
        # job (see .github/angular-robot.yml). Additionally any artifacts need to be stored with the
        # following path format: "{projectName}/{context}/{fileName}". This format is necessary
        # because otherwise the bot is not able to pick up the artifacts from CircleCI. See:
        # https://github.com/angular/github-robot/blob/master/functions/src/plugins/size.ts#L392-L394
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/hello_world/bundle.min.js
          destination: core/hello_world/bundle
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/todo/bundle.min.js
          destination: core/todo/bundle
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/hello_world/bundle.min.js.br
          destination: core/hello_world/bundle.br
      - store_artifacts:
          path: dist/bin/packages/core/test/bundling/todo/bundle.min.js.br
          destination: core/todo/bundle.br

  # NOTE: This is currently limited to master builds only. See the `monitoring` configuration.
  saucelabs_view_engine:
    executor:
      name: default-executor
      # In order to avoid the bottleneck of having a slow host machine, we acquire a better
      # container for this job. This is necessary because we launch a lot of browsers concurrently
      # and therefore the tunnel and Karma need to process a lot of file requests and tests.
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - init_saucelabs_environment
      - run:
          name: Run Bazel tests on Saucelabs with ViewEngine
          # See /tools/saucelabs/README.md for more info
          command: |
            yarn bazel run //tools/saucelabs:sauce_service_setup
            TESTS=$(./node_modules/.bin/bazelisk query --output label '(kind(karma_web_test, ...) intersect attr("tags", "saucelabs", ...)) except attr("tags", "ivy-only", ...) except attr("tags", "fixme-saucelabs-ve", ...)')
            yarn bazel test --config=saucelabs ${TESTS}
            yarn bazel run //tools/saucelabs:sauce_service_stop
          no_output_timeout: 40m
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_DEV_INFRA_CI_FAILURES_WEBHOOK_URL

  # NOTE: This is currently limited to master builds only. See the `monitoring` configuration.
  saucelabs_ivy:
    executor:
      name: default-executor
      # In order to avoid the bottleneck of having a slow host machine, we acquire a better
      # container for this job. This is necessary because we launch a lot of browsers concurrently
      # and therefore the tunnel and Karma need to process a lot of file requests and tests.
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - init_saucelabs_environment
      - run:
          name: Run Bazel tests on Saucelabs with Ivy
          # See /tools/saucelabs/README.md for more info
          command: |
            yarn bazel run //tools/saucelabs:sauce_service_setup
            TESTS=$(./node_modules/.bin/bazelisk query --output label '(kind(karma_web_test, ...) intersect attr("tags", "saucelabs", ...)) except attr("tags", "no-ivy-aot", ...) except attr("tags", "fixme-saucelabs-ivy", ...)')
            yarn bazel test --config=saucelabs --config=ivy ${TESTS}
            yarn bazel run //tools/saucelabs:sauce_service_stop
          no_output_timeout: 40m
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_DEV_INFRA_CI_FAILURES_WEBHOOK_URL

  test_aio:
    executor: default-executor
    parameters:
      debugArtifactsDir:
        type: string
        default: aio/dist/size-debug-artifacts
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
        # Build aio
      - run: yarn --cwd aio build --progress=false
        # Lint the code
      - run: yarn --cwd aio lint
        # Run unit tests
      - run: yarn --cwd aio test --progress=false --watch=false
        # Run e2e tests
      - run: yarn --cwd aio e2e --configuration=ci
        # Run PWA-score tests
      - run: yarn --cwd aio test-pwa-score-localhost $CI_AIO_MIN_PWA_SCORE
        # Run accessibility tests
      - run: yarn --cwd aio test-a11y-score-localhost
        # Check the bundle sizes.
      - run: yarn --cwd aio payload-size
        # When `payload-size` check fails, copy the files that were checked into `debugArtifactsDir`.
      - run:
          when: on_fail
          name: Prepare JS bundles to be stored as artifacts
          command: node aio/scripts/prepare-size-debug-artifacts aio << parameters.debugArtifactsDir >>
        # Store files in `debugArtifactsDir` (if any) as artifacts for debugging purposes.
      - store_artifacts:
          path: << parameters.debugArtifactsDir >>
          destination: aio
        # Run unit tests for Firebase redirects
      - run: yarn --cwd aio redirects-test

  deploy_aio:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
        # Deploy angular.io to production (if necessary)
      - run: setPublicVar_CI_STABLE_BRANCH
      - run: yarn --cwd aio deploy-production

  test_aio_local:
    parameters:
      debugArtifactsDir:
        type: string
        default: aio/dist/size-debug-artifacts
      viewengine:
        type: boolean
        default: false
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
        # Build aio (with local Angular packages)
      - run: yarn --cwd aio build-local<<# parameters.viewengine >>-with-viewengine<</ parameters.viewengine >>-ci
        # Run unit tests
      - run: yarn --cwd aio test --progress=false --watch=false
        # Run e2e tests
      - run: yarn --cwd aio e2e --configuration=ci
        # Run PWA-score tests
      - run: yarn --cwd aio test-pwa-score-localhost $CI_AIO_MIN_PWA_SCORE
        # Check the bundle sizes.
      - run: yarn --cwd aio payload-size aio-local<<# parameters.viewengine >>-viewengine<</ parameters.viewengine >>
        # When `payload-size` check fails, copy the files that were checked into `debugArtifactsDir`.
      - run:
          when: on_fail
          name: Prepare JS bundles to be stored as artifacts
          command: node aio/scripts/prepare-size-debug-artifacts aio-local<<# parameters.viewengine >>-viewengine<</ parameters.viewengine >> << parameters.debugArtifactsDir >>
        # Store files in `debugArtifactsDir` (if any) as artifacts for debugging purposes.
      - store_artifacts:
          path: << parameters.debugArtifactsDir >>
          destination: aio

  test_aio_tools:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
        # Install
      - run: yarn --cwd aio install --frozen-lockfile --non-interactive
      - run: yarn --cwd aio extract-cli-command-docs
        # Run tools tests
      - run: yarn --cwd aio tools-test
      - run: ./aio/aio-builds-setup/scripts/test.sh

  test_docs_examples:
    parameters:
      viewengine:
        type: boolean
        default: false
    executor:
      name: default-executor
      resource_class: xlarge
    parallelism: 5
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
        # Install aio
      - run: yarn --cwd aio install --frozen-lockfile --non-interactive
        # Run examples tests. The "CIRCLE_NODE_INDEX" will be set if "parallelism" is enabled.
        # Since the parallelism is set to "5", there will be five parallel CircleCI containers.
        # with either "0", "1", etc as node index. This can be passed to the "--shard" argument.
      - run: yarn --cwd aio example-e2e --setup --local <<# parameters.viewengine >>--viewengine<</ parameters.viewengine >> --cliSpecsConcurrency=5 --shard=${CIRCLE_NODE_INDEX}/${CIRCLE_NODE_TOTAL} --retry 2

  # This job should only be run on PR builds, where `CI_PULL_REQUEST` is not `false`.
  aio_preview:
    executor: default-executor
    environment:
       AIO_SNAPSHOT_ARTIFACT_PATH: &aio_preview_artifact_path 'aio/tmp/snapshot.tgz'
    steps:
      - custom_attach_workspace
      - init_environment
      - run: ./aio/scripts/build-artifacts.sh $AIO_SNAPSHOT_ARTIFACT_PATH $CI_PULL_REQUEST $CI_COMMIT
      - store_artifacts:
          path: *aio_preview_artifact_path
          # The `destination` needs to be kept in synch with the value of
          # `AIO_ARTIFACT_PATH` in `aio/aio-builds-setup/Dockerfile`
          destination: aio/dist/aio-snapshot.tgz
      - run: node ./aio/scripts/create-preview $CIRCLE_BUILD_NUM

  # This job should only be run on PR builds, where `CI_PULL_REQUEST` is not `false`.
  test_aio_preview:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
      - run: yarn --cwd aio install --frozen-lockfile --non-interactive
      - run:
          name: Wait for preview and run tests
          command: node aio/scripts/test-preview.js $CI_PULL_REQUEST $CI_COMMIT $CI_AIO_MIN_PWA_SCORE


  # The `build-npm-packages` tasks exist for backwards-compatibility with old scripts and
  # tests that rely on the pre-Bazel `dist/packages-dist` output structure (build.sh).
  # Having multiple jobs that independently build in this manner duplicates some work; we build
  # the bazel packages more than once. 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.

  # Build the view engine npm packages. No new jobs should depend on this.
  build-npm-packages:
    executor:
      name: default-executor
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - run: node scripts/build/build-packages-dist.js

      # Save the npm packages from //packages/... for other workflow jobs to read
      - persist_to_workspace:
          root: *workspace_location
          paths:
            - ng/dist/packages-dist
            - ng/dist/zone.js-dist

      # Save dependencies and bazel repository cache to use on subsequent runs.
      - save_cache:
          key: *cache_key
          paths:
            - "node_modules"
            - "aio/node_modules"
            - "~/bazel_repository_cache"
            - "~/.cache/bazelisk"

  # Build the ivy npm packages.
  build-ivy-npm-packages:
    executor:
      name: default-executor
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - run: node scripts/build/build-ivy-npm-packages.js

      # Save the npm packages from //packages/... for other workflow jobs to read
      - persist_to_workspace:
          root: *workspace_location
          paths:
            - ng/dist/packages-dist-ivy-aot
            - ng/dist/zone.js-dist-ivy-aot

  # This job creates compressed tarballs (`.tgz` files) for all Angular packages and stores them as
  # build artifacts. This makes it easy to try out changes from a PR build for testing purposes.
  # More info CircleCI build artifacts: https://circleci.com/docs/2.0/artifacts
  #
  # NOTE: Currently, this job only runs for PR builds. See `publish_snapshot` for non-PR builds.
  publish_packages_as_artifacts:
    executor: default-executor
    environment:
      NG_PACKAGES_DIR: &ng_packages_dir 'dist/packages-dist'
      NG_PACKAGES_ARCHIVES_DIR: &ng_packages_archives_dir 'dist/packages-dist-archives'
      ZONEJS_PACKAGES_DIR: &zonejs_packages_dir 'dist/zone.js-dist'
      ZONEJS_PACKAGES_ARCHIVES_DIR: &zonejs_packages_archives_dir 'dist/zone.js-dist-archives'
    steps:
      - custom_attach_workspace
      - init_environment
      # Publish `@angular/*` packages.
      - run:
          name: Create artifacts for @angular/* packages
          command: ./scripts/ci/create-package-archives.sh $CI_BRANCH $CI_COMMIT $NG_PACKAGES_DIR $NG_PACKAGES_ARCHIVES_DIR
      - store_artifacts:
          path: *ng_packages_archives_dir
          destination: angular
      # Publish `zone.js` package.
      - run:
          name: Create artifacts for zone.js package
          command: ./scripts/ci/create-package-archives.sh $CI_BRANCH $CI_COMMIT $ZONEJS_PACKAGES_DIR $ZONEJS_PACKAGES_ARCHIVES_DIR
      - store_artifacts:
          path: *zonejs_packages_archives_dir
          destination: zone.js

  # This job updates the content of repos like github.com/angular/core-builds
  # for every green build on angular/angular.
  publish_snapshot:
    executor: default-executor
    steps:
      # See below - ideally this job should not trigger for non-upstream builds.
      # But since it does, we have to check this condition.
      - run:
          name: Skip this job for Pull Requests and Fork builds
          # Note: Using `CIRCLE_*` env variables (instead of those defined in `env.sh` so that this
          #       step can be run before `init_environment`.
          command: >
            if [[ -n "${CIRCLE_PR_NUMBER}" ]] ||
                [[ "$CIRCLE_PROJECT_USERNAME" != "angular" ]] ||
                [[ "$CIRCLE_PROJECT_REPONAME" != "angular" ]]; then
              circleci step halt
            fi
      - custom_attach_workspace
      - init_environment
      # CircleCI has a config setting to force SSH for all github connections
      # This is not compatible with our mechanism of using a Personal Access Token
      # Clear the global setting
      - run: git config --global --unset "url.ssh://git@github.com.insteadof"
      - run:
          name: Decrypt github credentials
          # We need ensure that the same default digest is used for encoding and decoding with
          # OpenSSL. OpenSSL versions might have different default digests which can cause
          # decryption failures based on the installed OpenSSL version. https://stackoverflow.com/a/39641378/4317734
          command: 'openssl aes-256-cbc -d -in .circleci/github_token -md md5 -k "${KEY}" -out ~/.git_credentials'
      - run: ./scripts/ci/publish-build-artifacts.sh

  aio_monitoring_stable:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
      - run: setPublicVar_CI_STABLE_BRANCH
      - run:
          name: Check out `aio/` and yarn from the stable branch
          command: |
            git fetch origin $CI_STABLE_BRANCH
            git checkout --force origin/$CI_STABLE_BRANCH -- aio/ .yarn/ .yarnrc
      # Ignore yarn's engines check, because we checked out `aio/package.json` from the stable
      # branch and there could be a node version skew, which is acceptable in this monitoring job.
      - run: yarn config set ignore-engines true
      - run:
          name: Run tests against https://angular.io/
          command: ./aio/scripts/test-production.sh https://angular.io/ $CI_AIO_MIN_PWA_SCORE
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_CARETAKER_WEBHOOK_URL
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_DEV_INFRA_CI_FAILURES_WEBHOOK_URL

  aio_monitoring_next:
    executor: default-executor
    steps:
      - custom_attach_workspace
      - init_environment
      - install_chrome_libs
      - run:
          name: Run tests against https://next.angular.io/
          command: ./aio/scripts/test-production.sh https://next.angular.io/ $CI_AIO_MIN_PWA_SCORE
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_CARETAKER_WEBHOOK_URL
      - notify_webhook_on_fail:
          webhook_url_env_var: SLACK_DEV_INFRA_CI_FAILURES_WEBHOOK_URL

  legacy-unit-tests-saucelabs:
    executor:
      name: default-executor
      # In order to avoid the bottleneck of having a slow host machine, we acquire a better
      # container for this job. This is necessary because we launch a lot of browsers concurrently
      # and therefore the tunnel and Karma need to process a lot of file requests and tests.
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      - init_saucelabs_environment
      - run:
          name: Starting Saucelabs tunnel service
          command: ./tools/saucelabs/sauce-service.sh run
          background: true
      - run: yarn tsc -p packages
      - run: yarn tsc -p modules
      - run: yarn bazel build //packages/zone.js:npm_package
      - run:
          # Waiting on ready ensures that we don't run tests too early without Saucelabs not being ready.
          name: Waiting for Saucelabs tunnel to connect
          command: ./tools/saucelabs/sauce-service.sh ready-wait
      - run:
          name: Running tests on Saucelabs.
          command: |
            browsers=$(node -e 'console.log(require("./browser-providers.conf").sauceAliases.CI_REQUIRED.join(","))')
            yarn karma start ./karma-js.conf.js --single-run --browsers=${browsers}
      - run:
          name: Stop Saucelabs tunnel service
          command: ./tools/saucelabs/sauce-service.sh stop

  # Job that runs all unit tests of the `angular/components` repository.
  components-repo-unit-tests:
    executor:
      name: default-executor
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
      # Restore the cache before cloning the repository because the clone script re-uses
      # the restored repository if present. This reduces the amount of times the components
      # repository needs to be cloned (this is slow and increases based on commits in the repo).
      - restore_cache:
          keys:
            - *components_repo_unit_tests_cache_key
            # Whenever the `angular/components` SHA is updated, the cache key will no longer
            # match. The fallback cache will still match, and CircleCI will restore the most
            # recently cached repository folder. Without the fallback cache, we'd need to download
            # the repository from scratch and it would slow down the job. This is because we can't
            # clone the repository with reduced `--depth`, but rather need to clone the whole
            # repository to be able to support arbitrary SHAs.
            - *components_repo_unit_tests_cache_key_fallback
      - run:
          name: "Fetching angular/components repository"
          command: ./scripts/ci/clone_angular_components_repo.sh
      - run:
          # Run yarn install to fetch the Bazel binaries as used in the components repo.
          name: Installing dependencies.
          # TODO: remove this once the repo has been updated to use NodeJS v12 and Yarn 1.19.1.
          # We temporarily ignore the "engines" because the Angular components repository has
          # minimum dependency on NodeJS v12 and Yarn 1.19.1, but the framework repository uses
          # older versions.
          command: yarn --ignore-engines --cwd ${COMPONENTS_REPO_TMP_DIR} install --frozen-lockfile --non-interactive
      - save_cache:
          key: *components_repo_unit_tests_cache_key
          paths:
            # Temporary directory must be kept in sync with the `$COMPONENTS_REPO_TMP_DIR` env
            # variable. It needs to be hardcoded here, because env variables interpolation is
            # not supported.
            - "/tmp/angular-components-repo"
      - run:
          # Updates the `angular/components` `package.json` file to refer to the release output
          # inside the `packages-dist` directory. Note that it's not necessary to perform a yarn
          # install as Bazel runs Yarn automatically when needed.
          name: Setting up release packages.
          command: node scripts/ci/update-deps-to-dist-packages.js ${COMPONENTS_REPO_TMP_DIR}/package.json dist/packages-dist/
      - run:
          name: "Running `angular/components` unit tests"
          command: ./scripts/ci/run_angular_components_unit_tests.sh

  test_zonejs:
    executor:
      name: default-executor
      resource_class: xlarge
    steps:
      - custom_attach_workspace
      - init_environment
        # Install
      - run: yarn --cwd packages/zone.js install --frozen-lockfile --non-interactive
        # Run zone.js tools tests
      - run: yarn --cwd packages/zone.js promisetest
      - run: yarn --cwd packages/zone.js promisefinallytest
      - run: yarn bazel build //packages/zone.js:npm_package &&
             cp dist/bin/packages/zone.js/npm_package/bundles/zone-mix.umd.js ./packages/zone.js/test/extra/ &&
             cp dist/bin/packages/zone.js/npm_package/bundles/zone-patch-electron.umd.js ./packages/zone.js/test/extra/ &&
             yarn --cwd packages/zone.js electrontest
      - run: yarn --cwd packages/zone.js jesttest

  # Windows jobs
  # Docs: https://circleci.com/docs/2.0/hello-world-windows/
  test_win:
    executor: windows-executor
    steps:
      - setup_win
      - run:
          # Ran into a command parsing problem where `-browser:chromium-local` was converted to
          # `-browser: chromium-local` (a space was added) in https://circleci.com/gh/angular/angular/357511.
          # Probably a powershell command parsing thing. There's no problem using a yarn script though.
          command: yarn circleci-win-ve
          no_output_timeout: 45m
      # Save bazel repository cache to use on subsequent runs.
      # We don't save node_modules because it's faster to use the linux workspace and reinstall.
      - save_cache:
          key: *cache_key_win
          paths:
            - "C:/Users/circleci/bazel_repository_cache"

  test_ivy_aot_win:
    executor: windows-executor
    steps:
      - setup_win
      - run:
          command: yarn circleci-win-ivy
          no_output_timeout: 45m


workflows:
  version: 2
  default_workflow:
    jobs:
      - setup:
          filters:
            branches:
              ignore: g3
      - lint:
          requires:
            - setup
      - test:
          requires:
            - setup
      - test_ivy_aot:
          requires:
            - setup
      - build-npm-packages:
          requires:
            - setup
      - build-ivy-npm-packages:
          requires:
            - setup
      - legacy-unit-tests-saucelabs:
          requires:
            - setup
      - test_aio:
          requires:
            - setup
      - deploy_aio:
          requires:
            - test_aio
      - test_aio_local:
          requires:
            - build-npm-packages
      - test_aio_local:
          name: test_aio_local_viewengine
          viewengine: true
          requires:
            - build-npm-packages
      - test_aio_tools:
          requires:
            - build-npm-packages
      - test_docs_examples:
          requires:
            - build-npm-packages
      - test_docs_examples:
          name: test_docs_examples_viewengine
          viewengine: true
          requires:
            - build-npm-packages
      - aio_preview:
          # Only run on PR builds. (There can be no previews for non-PR builds.)
          <<: *only_on_pull_requests
          requires:
            - setup
      - test_aio_preview:
          requires:
            - aio_preview
      - publish_packages_as_artifacts:
          requires:
            - build-npm-packages
      - 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 job just exits immediately at the first step.
          requires:
            # Only publish if tests and integration tests pass
            - test
            - test_ivy_aot
            # Only publish if `aio`/`docs` tests using the locally built Angular packages pass
            - test_aio_local
            - test_aio_local_viewengine
            - test_docs_examples
            - test_docs_examples_viewengine
            # Get the artifacts to publish from the build-packages-dist job
            # since the publishing script expects the legacy outputs layout.
            - build-npm-packages
            - build-ivy-npm-packages
            - legacy-unit-tests-saucelabs
      - components-repo-unit-tests:
          requires:
            - build-npm-packages
      - test_zonejs:
          requires:
            - setup
      # Windows Jobs
      # These are very slow so we run them on non-PRs only for now.
      # TODO: remove the filter when CircleCI makes Windows FS faster.
      # The Windows jobs are only run after their non-windows counterparts finish successfully.
      # This isn't strictly necessary as there is no artifact dependency, but helps economize
      # CI resources by not attempting to build when we know should fail.
      - test_win:
          <<: *skip_on_pull_requests
          requires:
            - test
      - test_ivy_aot_win:
          <<: *skip_on_pull_requests
          requires:
            - test_ivy_aot

  monitoring:
    jobs:
      - setup
      - aio_monitoring_stable:
          requires:
            - setup
      - aio_monitoring_next:
          requires:
            - setup
      - saucelabs_ivy:
          # Testing saucelabs via Bazel currently taking longer than the legacy saucelabs job as it
          # each karma_web_test target is provisioning and tearing down browsers which is adding
          # a lot of overhead. Running once daily on master only to avoid wasting resources and
          # slowing down CI for PRs.
          # TODO: Run this job on all branches (including PRs) once karma_web_test targets can
          # share provisioned browsers and we can remove the legacy saucelabs job.
          requires:
            - setup
      - saucelabs_view_engine:
          # Testing saucelabs via Bazel currently taking longer than the legacy saucelabs job as it
          # each karma_web_test target is provisioning and tearing down browsers which is adding
          # a lot of overhead. Running once daily on master only to avoid wasting resources and
          # slowing down CI for PRs.
          # TODO: Run this job on all branches (including PRs) once karma_web_test targets can
          # share provisioned browsers and we can remove the legacy saucelabs job.
          requires:
            - setup
    triggers:
      - schedule:
          <<: *only_on_master
          # Runs monitoring jobs at 10:00AM every day.
          cron: "0 10 * * *"