---
version: 2.1
orbs:
  prometheus: prometheus/prometheus@0.16.0
  go: circleci/go@1.7.0
jobs:
  test_frontend:
    # We need to use a machine executor because the front-end validation runs
    # containers with mounted volumes which isn't supported with the docker
    # executor (even with setup_remote_docker).
    machine: true
    steps:
      - checkout
      - run: sudo service docker restart
      - run:
          name: Remove existing Go installation
          command: sudo rm -rf /usr/local/go
      # Whenever the Go version is updated here, .promu.yml should also be updated.
      - go/install:
          version: "1.17"
      - run:
          name: Remove generated code
          command: make clean
      - run:
          name: Generate front-end code
          command: make all
          working_directory: ~/project/ui/app
          environment:
            JUNIT_DIR: ~/test-results
      - run:
          name: Generate assets
          command: make assets
      - run:
          name: Generate API v2 code
          command: make apiv2
      - run: git diff --exit-code
      - store_test_results:
          path: ~/test-results
  test:
    docker:
      # Whenever the Go version is updated here, .promu.yml should also be updated.
      - image: quay.io/prometheus/golang-builder:1.17-base
      # maildev containers are for running the email tests against a "real" SMTP server.
      # See notify/email_test.go for details.
      - image: djfarrelly/maildev:1.1.0
        name: maildev-noauth
        entrypoint: bin/maildev
        command:
          - -v
      - image: djfarrelly/maildev:1.1.0
        name: maildev-auth
        entrypoint: bin/maildev
        command:
          - -v
          - --incoming-user
          - user
          - --incoming-pass
          - pass
    environment:
      EMAIL_NO_AUTH_CONFIG: /tmp/smtp_no_auth.yml
      EMAIL_AUTH_CONFIG: /tmp/smtp_auth.yml
    steps:
      - prometheus/setup_environment
      - go/load-cache:
          key: v1-go-mod
      - run:
          command: |
            cat \<<EOF > $EMAIL_NO_AUTH_CONFIG
            smarthost: maildev-noauth:1025
            server: http://maildev-noauth:1080/
            EOF
            cat \<<EOF > $EMAIL_AUTH_CONFIG
            smarthost: maildev-auth:1025
            server: http://maildev-auth:1080/
            username: user
            password: pass
            EOF
      - run:
          command: make
          environment:
            # By default Go uses GOMAXPROCS but a Circle CI executor has many
            # cores (> 30) while the CPU and RAM resources are throttled. If we
            # don't limit this to the number of allocated cores, the job is
            # likely to get OOMed and killed.
            GOOPTS: "-p 2"
      - prometheus/check_proto:
          version: "3.15.8"
      - prometheus/store_artifact:
          file: alertmanager
      - prometheus/store_artifact:
          file: amtool
      - go/save-cache:
          key: v1-go-mod
      - store_test_results:
          path: test-results
  mixin:
    docker:
      # Whenever the Go version is updated here, .promu.yml should also be updated.
      - image: quay.io/prometheus/golang-builder:1.17-base
    steps:
      - checkout
      - run: cd doc/alertmanager-mixin; go install github.com/monitoring-mixins/mixtool/cmd/mixtool@latest
      - run: cd doc/alertmanager-mixin; go install github.com/google/go-jsonnet/cmd/jsonnetfmt@latest
      - run: cd doc/alertmanager-mixin; go install github.com/jsonnet-bundler/jsonnet-bundler/cmd/jb@latest
      - run: cd doc/alertmanager-mixin; make lint
workflows:
  version: 2
  alertmanager:
    jobs:
      - test_frontend:
          filters:
            tags:
              only: /.*/
      - test:
          filters:
            tags:
              only: /.*/
      - prometheus/build:
          name: build
          parallelism: 8
          filters:
            tags:
              only: /.*/
      - mixin:
          filters:
            tags:
              only: /.*/
      - prometheus/publish_main:
          context: org-context
          requires:
            - test_frontend
            - test
            - build
          filters:
            branches:
              only: main
      - prometheus/publish_release:
          context: org-context
          requires:
            - test_frontend
            - test
            - build
          filters:
            tags:
              only: /^v[0-9]+(\.[0-9]+){2}(-.+|[^-.]*)$/
            branches:
              ignore: /.*/