docker-compose.yml

services:
  # The new ratings processor application
  legacy-rating-processor:
    build:
      context: .
      dockerfile: Dockerfile
    # Corrected: Use a separate env file for the Docker container
    env_file:
      - docker.env
    depends_on:
      postgres:
        condition: service_healthy
      kafka-setup:
        condition: service_completed_successfully
    networks:
      - topcoder-net
    extra_hosts:
      - "host.docker.internal:host-gateway"

  # PostgreSQL database service
  postgres:
    image: postgres:16-alpine
    restart: always
    environment:
      POSTGRES_USER: user
      POSTGRES_PASSWORD: password
      POSTGRES_DB: ratings_db
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    networks:
      - topcoder-net
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U user -d ratings_db"]
      interval: 10s
      timeout: 5s
      retries: 5

  # Zookeeper service for Kafka
  zookeeper:
    image: confluentinc/cp-zookeeper:7.4.0
    networks:
      - topcoder-net
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000

  # Kafka message broker service
  kafka:
    image: confluentinc/cp-kafka:7.4.0
    networks:
      - topcoder-net
    depends_on:
      - zookeeper
    ports:
      - "9092:9092"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://localhost:9092,PLAINTEXT_INTERNAL://kafka:29092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
    healthcheck:
      test: ["CMD-SHELL", "kafka-topics --bootstrap-server kafka:29092 --list"]
      interval: 15s
      timeout: 10s
      retries: 10

  # New service to automatically create Kafka topics
  kafka-setup:
    image: confluentinc/cp-kafka:7.4.0
    depends_on:
      - kafka
    networks:
      - topcoder-net
    command: >
      sh -c "
        echo 'Waiting for Kafka to be ready...' &&
        cub kafka-ready -b kafka:29092 1 60 &&
        echo 'Kafka is ready! Creating topics...' &&
        kafka-topics --create --if-not-exists --bootstrap-server kafka:29092 --replication-factor 1 --partitions 1 --topic challenge.notification.events &&
        kafka-topics --create --if-not-exists --bootstrap-server kafka:29092 --replication-factor 1 --partitions 1 --topic submission.notification.aggregate &&
        kafka-topics --create --if-not-exists --bootstrap-server kafka:29092 --replication-factor 1 --partitions 1 --topic notifications.autopilot.events &&
        echo 'Topics created successfully.'
      "

# Define the network for services to communicate
networks:
  topcoder-net:
    driver: bridge

# Define the volume for persistent data
volumes:
  postgres_data: