docker-compose.yml

version: "3.8"

services:
  # PostgreSQL Database
  postgres:
    image: postgres:15-alpine
    container_name: explaingrade-postgres
    environment:
      POSTGRES_USER: explaingrade
      POSTGRES_PASSWORD: securepassword123
      POSTGRES_DB: explaingrade_db
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U explaingrade"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - explaingrade-network

  # Redis Cache
  redis:
    image: redis:7-alpine
    container_name: explaingrade-redis
    ports:
      - "6379:6379"
    volumes:
      - redis_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - explaingrade-network

  # Apache Kafka & Zookeeper
  zookeeper:
    image: confluentinc/cp-zookeeper:7.5.0
    container_name: explaingrade-zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    ports:
      - "2181:2181"
    networks:
      - explaingrade-network

  kafka:
    image: confluentinc/cp-kafka:7.5.0
    container_name: explaingrade-kafka
    depends_on:
      - zookeeper
    ports:
      - "9092:9092"
      - "9093:9093"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://kafka:9092
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_INTER_BROKER_LISTENER_NAME: PLAINTEXT
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
    healthcheck:
      test: kafka-broker-api-versions --bootstrap-server=localhost:9092
      interval: 10s
      timeout: 10s
      retries: 5
    networks:
      - explaingrade-network

  # MongoDB
  mongo:
    image: mongo:6
    container_name: explaingrade-mongo
    environment:
      MONGO_INITDB_ROOT_USERNAME: explaingrade
      MONGO_INITDB_ROOT_PASSWORD: securepassword123
    ports:
      - "27017:27017"
    volumes:
      - mongo_data:/data/db
    healthcheck:
      test: echo 'db.runCommand("ping").ok' | mongosh localhost:27017/test --quiet
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - explaingrade-network

  # Elasticsearch (for search)
  elasticsearch:
    image: docker.elastic.co/elasticsearch/elasticsearch:8.9.0
    container_name: explaingrade-elasticsearch
    environment:
      - discovery.type=single-node
      - xpack.security.enabled=false
    ports:
      - "9200:9200"
    volumes:
      - elasticsearch_data:/usr/share/elasticsearch/data
    healthcheck:
      test: curl -s http://localhost:9200 >/dev/null || exit 1
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - explaingrade-network

  # Apache Spark Master (for batch processing)
  spark-master:
    image: bitnami/spark:3.4.0
    container_name: explaingrade-spark-master
    environment:
      SPARK_MODE: master
      SPARK_RPC_AUTHENTICATION_ENABLED: "no"
      SPARK_RPC_ENCRYPTION_ENABLED: "no"
      SPARK_LOCAL_STORAGE_ENCRYPTION_ENABLED: "no"
      SPARK_SSL_ENABLED: "no"
    ports:
      - "8080:8080"
      - "7077:7077"
      - "4040:4040"
    networks:
      - explaingrade-network

  # Apache Spark Worker
  spark-worker:
    image: bitnami/spark:3.4.0
    container_name: explaingrade-spark-worker
    depends_on:
      - spark-master
    environment:
      SPARK_MODE: worker
      SPARK_MASTER_URL: spark://spark-master:7077
      SPARK_WORKER_MEMORY: 2G
      SPARK_WORKER_CORES: 2
      SPARK_RPC_AUTHENTICATION_ENABLED: "no"
      SPARK_RPC_ENCRYPTION_ENABLED: "no"
    ports:
      - "8081:8081"
    networks:
      - explaingrade-network

  # FastAPI Backend
  fastapi:
    build: .
    container_name: explaingrade-api
    depends_on:
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
      kafka:
        condition: service_healthy
    ports:
      - "8000:8000"
    environment:
      DATABASE_URL: postgresql://explaingrade:securepassword123@postgres:5432/explaingrade_db
      REDIS_URL: redis://redis:6379/0
      KAFKA_BROKER: kafka:29092
      PYTHONUNBUFFERED: 1
    volumes:
      - .:/app
    networks:
      - explaingrade-network
    command: python -m uvicorn api.main:app --host 0.0.0.0 --port 8000 --reload

  # Node.js Frontend
  frontend:
    image: node:18-alpine
    container_name: explaingrade-frontend
    working_dir: /app
    ports:
      - "3000:3000"
    volumes:
      - .:/app
    environment:
      NODE_ENV: development
    networks:
      - explaingrade-network
    command: npm run dev

volumes:
  postgres_data:
  redis_data:
  mongo_data:
  elasticsearch_data:

networks:
  explaingrade-network:
    driver: bridge