version: '3'
services:
  backend:
    container_name: backend
    build:
      context: .
      dockerfile: docker/dev.Dockerfile
      # TODO: Try using cache_from pointed at a Docker Hub image built from master
      # Though may need to also use the workaround for local vs remote:
      # https://github.com/moby/moby/issues/32612#issuecomment-294055017
      # cache_from: TODO
    image: treeherder-backend
    environment:
      # Development/CI-specific environment variables only.
      # Those that do not vary across environments should go in `Dockerfile`.
      - BROKER_URL=amqp://guest:guest@rabbitmq//
      - DATABASE_URL=${DATABASE_URL:-mysql://root@mysql/treeherder}
      - GITHUB_TOKEN=${GITHUB_TOKEN:-}
      - UPSTREAM_DATABASE_URL=${UPSTREAM_DATABASE_URL:-}
      - PERF_SHERIFF_BOT_CLIENT_ID=${PERF_SHERIFF_BOT_CLIENT_ID:-}
      - PERF_SHERIFF_BOT_ACCESS_TOKEN=${PERF_SHERIFF_BOT_ACCESS_TOKEN:-}
      - REDIS_URL=redis://redis:6379
      - SITE_URL=http://backend:8000/
      - LOGGING_LEVEL=INFO
      - TREEHERDER_DEBUG=True
      - TREEHERDER_DJANGO_SECRET_KEY=secret-key-of-at-least-50-characters-to-pass-check-deploy
      - NEW_RELIC_DEVELOPER_MODE=True
    entrypoint: './docker/entrypoint.sh'
    command: './manage.py runserver 0.0.0.0:8000'
    # Django's runserver doesn't listen to the default of SIGTERM, so docker-compose
    # must send SIGINT instead to avoid waiting 10 seconds for the time out.
    stop_signal: SIGINT
    # https://github.com/SeleniumHQ/docker-selenium#running-the-images
    shm_size: 2g
    volumes:
      - .:/app
    ports:
      - '8000:8000'
    depends_on:
      - mysql
      - redis
      - rabbitmq

  frontend:
    container_name: frontend
    # https://hub.docker.com/_/node
    image: node:12.13.1-alpine
    environment:
      # Allows `.neutrinorc.js` to adjust filesystem watching and browser opening behaviour.
      - IN_DOCKER=1
    # Installing JS dependencies at runtime so that they share the `node_modules` from the
    # host, improving speed (both install and build due to the webpack cache) and ensuring
    # the host copy stays in sync (for people that switch back and forth between UI-only
    # and full stack Treeherder development).
    working_dir: /app
    command: sh -c "yarn && yarn start --env.BACKEND=http://backend:8000 --host 0.0.0.0"
    volumes:
      - .:/app
    ports:
      - '5000:5000'

  mysql:
    container_name: mysql
    # https://hub.docker.com/r/library/mysql/
    image: mysql:5.7.29
    environment:
      - MYSQL_ALLOW_EMPTY_PASSWORD=true
      - MYSQL_DATABASE=treeherder
    volumes:
      - ./docker/mysql.cnf:/etc/mysql/conf.d/mysql.cnf
      - mysql_data:/var/lib/mysql
    ports:
      - '3306:3306'

  redis:
    container_name: redis
    # https://hub.docker.com/_/redis/
    image: redis:5.0.7-alpine
    # Messages after starting the redis-server
    # WARNING: The TCP backlog setting of 511 cannot be enforced because /proc/sys/net/core/somaxconn is set to the lower value of 128
    # WARNING you have Transparent Huge Pages (THP) support enabled in your kernel. This will create latency and memory usage issues with Redis. To fix this issue run the command 'echo never > /sys/kernel/mm/transparent_hugepage/enabled' as root, and add it to your /etc/rc.local in order to retain the setting after a reboot. Redis must be restarted after THP is disabled.
    # Hide Redis `notice` log level startup output spam.
    command: redis-server --loglevel warning
    ports:
      - '6379:6379'
  rabbitmq:
    container_name: rabbitmq
    # https://hub.docker.com/r/library/rabbitmq/
    image: rabbitmq:3.8-alpine
    environment:
      # Hide INFO and WARNING log levels to reduce log spam.
      - 'RABBITMQ_SERVER_ADDITIONAL_ERL_ARGS=-rabbit log [{console,[{level,error}]}]'
    ports:
      - '5672:5672'
volumes:
  # TODO: Experiment with using tmpfs when testing, to speed up database-using Python tests.
  mysql_data: {}