variables:
  AUTO_DEPLOY_IMAGE_VERSION: 'v2.33.0'

.auto-deploy:
  image: "${CI_TEMPLATE_REGISTRY_HOST}/gitlab-org/cluster-integration/auto-deploy-image:${AUTO_DEPLOY_IMAGE_VERSION}"
  dependencies: []

review:
  extends: .auto-deploy
  stage: review
  script:
    - auto-deploy check_kube_domain
    - auto-deploy download_chart
    - auto-deploy use_kube_context
    - auto-deploy ensure_namespace
    - auto-deploy initialize_tiller
    - auto-deploy create_secret
    - auto-deploy deploy
    - auto-deploy persist_environment_url
  environment:
    name: review/$CI_COMMIT_REF_NAME
    url: http://$CI_PROJECT_ID-$CI_ENVIRONMENT_SLUG.$KUBE_INGRESS_BASE_DOMAIN
    on_stop: stop_review
  artifacts:
    paths: [environment_url.txt, tiller.log]
    when: always
  rules:
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
      when: never
    - if: '$REVIEW_DISABLED'
      when: never
    - if: '$CI_COMMIT_TAG || $CI_COMMIT_BRANCH'

stop_review:
  extends: .auto-deploy
  stage: cleanup
  variables:
    GIT_STRATEGY: none
  script:
    - auto-deploy use_kube_context
    - auto-deploy initialize_tiller
    - auto-deploy delete
  environment:
    name: review/$CI_COMMIT_REF_NAME
    action: stop
  allow_failure: true
  rules:
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'
      when: never
    - if: '$REVIEW_DISABLED'
      when: never
    - if: '$CI_COMMIT_TAG || $CI_COMMIT_BRANCH'
      when: manual

# Staging deploys are disabled by default since
# continuous deployment to production is enabled by default
# If you prefer to automatically deploy to staging and
# only manually promote to production, enable this job by setting
# STAGING_ENABLED.

staging:
  extends: .auto-deploy
  stage: staging
  script:
    - auto-deploy check_kube_domain
    - auto-deploy download_chart
    - auto-deploy use_kube_context
    - auto-deploy ensure_namespace
    - auto-deploy initialize_tiller
    - auto-deploy create_secret
    - auto-deploy deploy
  environment:
    name: staging
    url: http://$CI_PROJECT_PATH_SLUG-staging.$KUBE_INGRESS_BASE_DOMAIN
  rules:
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
      when: never
    - if: '$STAGING_ENABLED'

# Canaries are disabled by default, but if you want them,
# and know what the downsides are, you can enable this by setting
# CANARY_ENABLED.

canary:
  extends: .auto-deploy
  stage: canary
  allow_failure: true
  script:
    - auto-deploy check_kube_domain
    - auto-deploy download_chart
    - auto-deploy use_kube_context
    - auto-deploy ensure_namespace
    - auto-deploy initialize_tiller
    - auto-deploy create_secret
    - auto-deploy deploy canary 50
  environment:
    name: production
    url: http://$CI_PROJECT_PATH_SLUG.$KUBE_INGRESS_BASE_DOMAIN
  rules:
    - if: '$CI_DEPLOY_FREEZE'
      when: never
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
      when: never
    - if: '$CANARY_ENABLED'
      when: manual

.production: &production_template
  extends: .auto-deploy
  stage: production
  script:
    - auto-deploy check_kube_domain
    - auto-deploy download_chart
    - auto-deploy use_kube_context
    - auto-deploy ensure_namespace
    - auto-deploy initialize_tiller
    - auto-deploy create_secret
    - auto-deploy deploy
    - auto-deploy delete canary
    - auto-deploy persist_environment_url
  environment:
    name: production
    url: http://$CI_PROJECT_PATH_SLUG.$KUBE_INGRESS_BASE_DOMAIN
  artifacts:
    paths: [environment_url.txt, tiller.log]
    when: always

production:
  <<: *production_template
  rules:
    - if: '$CI_DEPLOY_FREEZE'
      when: never
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$STAGING_ENABLED'
      when: never
    - if: '$CANARY_ENABLED'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_ENABLED'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_MODE'
      when: never
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH'

production_manual:
  <<: *production_template
  allow_failure: false
  rules:
    - if: '$CI_DEPLOY_FREEZE'
      when: never
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_ENABLED'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_MODE'
      when: never
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $STAGING_ENABLED'
      when: manual
    - if: '$CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH && $CANARY_ENABLED'
      when: manual

# This job implements incremental rollout on for every push to the default branch.

.rollout: &rollout_template
  extends: .auto-deploy
  script:
    - auto-deploy check_kube_domain
    - auto-deploy download_chart
    - auto-deploy use_kube_context
    - auto-deploy ensure_namespace
    - auto-deploy initialize_tiller
    - auto-deploy create_secret
    - auto-deploy deploy canary $ROLLOUT_PERCENTAGE
    - auto-deploy persist_environment_url
  environment:
    name: production
    url: http://$CI_PROJECT_PATH_SLUG.$KUBE_INGRESS_BASE_DOMAIN
  artifacts:
    paths: [environment_url.txt, tiller.log]
    when: always

.manual_rollout_template: &manual_rollout_template
  <<: *rollout_template
  stage: production
  resource_group: production
  allow_failure: true
  rules:
    - if: '$CI_DEPLOY_FREEZE'
      when: never
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_MODE == "timed"'
      when: never
    - if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
      when: never
    # $INCREMENTAL_ROLLOUT_ENABLED is for compatibility with pre-GitLab 11.4 syntax
    - if: '$INCREMENTAL_ROLLOUT_MODE == "manual" || $INCREMENTAL_ROLLOUT_ENABLED'
      when: manual

.timed_rollout_template: &timed_rollout_template
  <<: *rollout_template
  rules:
    - if: '$CI_DEPLOY_FREEZE'
      when: never
    - if: '($CI_KUBERNETES_ACTIVE == null || $CI_KUBERNETES_ACTIVE == "") && ($KUBECONFIG == null || $KUBECONFIG == "")'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_MODE == "manual"'
      when: never
    - if: '$CI_COMMIT_BRANCH != $CI_DEFAULT_BRANCH'
      when: never
    - if: '$INCREMENTAL_ROLLOUT_MODE == "timed"'
      when: delayed
      start_in: 5 minutes

timed rollout 10%:
  <<: *timed_rollout_template
  stage: incremental rollout 10%
  variables:
    ROLLOUT_PERCENTAGE: 10

timed rollout 25%:
  <<: *timed_rollout_template
  stage: incremental rollout 25%
  variables:
    ROLLOUT_PERCENTAGE: 25

timed rollout 50%:
  <<: *timed_rollout_template
  stage: incremental rollout 50%
  variables:
    ROLLOUT_PERCENTAGE: 50

timed rollout 100%:
  <<: *timed_rollout_template
  <<: *production_template
  stage: incremental rollout 100%
  variables:
    ROLLOUT_PERCENTAGE: 100

rollout 10%:
  <<: *manual_rollout_template
  variables:
    ROLLOUT_PERCENTAGE: 10

rollout 25%:
  <<: *manual_rollout_template
  variables:
    ROLLOUT_PERCENTAGE: 25

rollout 50%:
  <<: *manual_rollout_template
  variables:
    ROLLOUT_PERCENTAGE: 50

rollout 100%:
  <<: *manual_rollout_template
  <<: *production_template
  allow_failure: false