.drone.yml

# -----------------------------------------------------------------------------
# SETTINGS
# -----------------------------------------------------------------------------

# Drone matrix: Additional ENV vars for substitution - http://docs.drone.io/matrix-builds/
# Will be evaluated BEFORE the YAML is parsed, ONLY strings allowed, NO substitutions ${XXX} here.

matrix:
  include:
    - BUILD_ENV: all
      # The name of the k8s namespaces that these pipelines will target.
      # K8S_DEPLOY_NS_DEV:
      # K8S_DEPLOY_NS_STAGING:
      # K8S_DEPLOY_NS_PRODUCTION:

# YAML Configuration anchors - https://learnxinyminutes.com/docs/yaml/
# Will be evaluated WHILE the YAML is parsed, any valid yaml allowed, substitutions ${XXX} allowed.

alias:
  # The image will be tagged with this, pushed to gcr and referenced with this key in the k8s deployment
  - &IMAGE_DEPLOY_TAG ${DRONE_COMMIT_SHA}

  # The image name, defaults to lowercase repo name <owner>/<project>, e.g. aw/aaa-cab-kubernetes-test
  - &IMAGE_DEPLOY_NAME ${DRONE_REPO,,}

  # The full uniquely tagged app image name
  - &IMAGE_DEPLOY_ID ${DRONE_REPO,,}:${DRONE_COMMIT_SHA}

  # Defines which branches will trigger a docker image push our Google Cloud Registry (tags are always published)
  - &GCR_PUBLISH_BRANCHES [main, dev]

    # Docker registry publish default settings
  - &GCR_REGISTRY_SETTINGS
    image: plugins/gcr
    repo: a3cloud-192413/${DRONE_REPO,,}
    registry: eu.gcr.io
    secrets:
      - source: AAA_GCR_SERVICE_ACCOUNT_JSON
        target: google_credentials
    # local short-time-cache: don't cleanup any image layers after pushing
    purge: false
    # force compress of docker build context
    compress: true
    volumes: # mount needed to push the already build container
      - /var/run/docker.sock:/var/run/docker.sock

  # ENV variables for executing within the test env (similar to the env in docker-compose.yml)
  - &TEST_ENV
    CI: ${CI}

  # Which build events should trigger the main pipeline (defaults to all)
  - &BUILD_EVENTS [push, pull_request, tag]

  # Pipeline merge helper: only execute if build event received
  - &WHEN_BUILD_EVENT
    when:
      event: *BUILD_EVENTS

# The actual pipeline building our product
pipeline:
  # ---------------------------------------------------------------------------
  # BUILD
  # ---------------------------------------------------------------------------

  "docker build":
    group: build-app
    image: docker:latest
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    environment:
      IMAGE_TAG: *IMAGE_DEPLOY_ID
    commands:
      - "docker build --compress -t $${IMAGE_TAG} ."
    <<: *WHEN_BUILD_EVENT

  # ---------------------------------------------------------------------------
  # PUBLISH
  # ---------------------------------------------------------------------------

  # Built a allowed branch? Push to cloud registry
  "publish ${DRONE_BRANCH}_${DRONE_COMMIT_SHA:0:10}":
    group: publish
    <<: *GCR_REGISTRY_SETTINGS
    tags:
      - build_${DRONE_BUILD_NUMBER}
      - ${DRONE_BRANCH/\//-}_${DRONE_COMMIT_SHA:0:10}
      - *IMAGE_DEPLOY_TAG
      - latest
      - ${DRONE_BRANCH/\//-}
      - "${DRONE_COMMIT_SHA:0:10}"
    when:
      branch: *GCR_PUBLISH_BRANCHES
      event: *BUILD_EVENTS

  # Built a tag? Push to cloud registry
  "publish tag_${DRONE_COMMIT_SHA:0:10}":
    group: publish
    <<: *GCR_REGISTRY_SETTINGS
    tags:
      - build_${DRONE_BUILD_NUMBER}
      - tag_${DRONE_COMMIT_SHA:0:10}
      - *IMAGE_DEPLOY_TAG
      - latest
      - ${DRONE_TAG}
      - ${DRONE_COMMIT_SHA:0:10}
    when:
      event: tag

# Long living services where the startup order does not matter (otherwise use detach: true)
services:
  # ---------------------------------------------------------------------------
  # SERVICES
  # ---------------------------------------------------------------------------

  "env":
    image: alpine
    commands:
      - "env | sort"