docker-compose.yaml

version: "3.8"

services:
  # NOTE: This is NOT an industrial, production elasticsearch. It's a single node
  # just to toy with.
  elasticsearch:
    hostname: ${ELASTIC_HOSTNAME}
    image: docker.elastic.co/elasticsearch/elasticsearch:7.17.0
    volumes:
      - ./elasticsearch/config/elasticsearch.yml:/usr/share/elasticsearch/config/elasticsearch.yml:ro,z
      - elasticsearch:/usr/share/elasticsearch/data:z
    ports:
      - "9200:9200"
      - "9300:9300"
    environment:
      ES_JAVA_OPTS: "-Xmx2048m -Xms1024m"
      ELASTIC_PASSWORD: ${ELASTIC_PASSWORD}
      ELASTIC_USERNAME: ${ELASTIC_USERNAME}
      # Use single node discovery in order to disable production mode and avoid bootstrap checks.
      # see: https://www.elastic.co/guide/en/elasticsearch/reference/current/bootstrap-checks.html
      discovery.type: single-node
    healthcheck:
      test: ["CMD-SHELL", "curl --user ${ELASTIC_USERNAME}:${ELASTIC_PASSWORD} --silent --fail localhost:9200/_cluster/health || exit 1"]
      interval: 2s
      timeout: 1s
      retries: 15
      start_period: 15s
      
  database:
    hostname: ${DATABASE_HOSTNAME}
    image: postgres:12
    environment:
      - POSTGRES_USER=${POSTGRES_USER}
      - POSTGRES_PASSWORD=${POSTGRES_PASSWORD}
      - POSTGRES_DB=${POSTGRES_DB}
    ports:
      - "5432:5432"
    volumes:
      - database-volume:/var/lib/postgresql
      - ./database/init.sql:/docker-entrypoint-initdb.d/init.sql # Database startup script
  streamer:
    build:
      context: .
      dockerfile: python.Dockerfile
    depends_on:
      elasticsearch:
        condition: service_healthy
    environment:
      DATABASE_HOST: ${DATABASE_HOSTNAME}
      ELASTIC_HOSTNAME: ${ELASTIC_HOSTNAME}
      ELASTIC_PASSWORD: ${ELASTIC_PASSWORD}
      ELASTIC_USERNAME: ${ELASTIC_USERNAME}
      ELASTIC_PORT: ${ELASTIC_PORT}
      MESSAGES_QUEUE: ${MESSAGES_QUEUE}
      PIPELINE_POSTGRES_PASSWORD: ${PIPELINE_POSTGRES_PASSWORD}
      PIPELINE_POSTGRES_USER: ${PIPELINE_POSTGRES_USER}
      POSTGRES_DB: ${POSTGRES_DB}
      PYTHONUNBUFFERED: 0
      RABBITMQ_HOST: ${MESSAGES_HOSTNAME}

    volumes:
      - type: bind
        source: ./src/
        target: /src/
  queueing:
    build:
      context: .
      dockerfile: rabbitmq.Dockerfile
    hostname: ${MESSAGES_HOSTNAME}
    ports:
      - "5672:5672" # Service
      - "15672:15672" # Web interface
    volumes:
      # Persist rabbitmq data
      - rabbit-data:/var/lib/rabbitmq/mnesia/

volumes:
  database-volume:
  rabbit-data:
  elasticsearch: