docker-compose.yml

version: "3.9"

services:

  # ── Zookeeper (required by Kafka) ──────────────────────────────────────────
  zookeeper:
    image: confluentinc/cp-zookeeper:7.6.0
    container_name: zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    ports:
      - "2181:2181"
    healthcheck:
      test: ["CMD", "bash", "-c", "echo ruok | nc localhost 2181 | grep imok"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - order-network

  # ── Kafka Broker ────────────────────────────────────────────────────────────
  kafka:
    image: confluentinc/cp-kafka:7.6.0
    container_name: kafka
    depends_on:
      zookeeper:
        condition: service_healthy
    ports:
      - "9092:9092"
      - "9101:9101"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka:29092,PLAINTEXT_HOST://localhost:9092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: "true"
      KAFKA_NUM_PARTITIONS: 3
      KAFKA_DEFAULT_REPLICATION_FACTOR: 1
      KAFKA_JMX_PORT: 9101
    healthcheck:
      test: ["CMD", "kafka-broker-api-versions", "--bootstrap-server", "localhost:9092"]
      interval: 15s
      timeout: 10s
      retries: 10
    networks:
      - order-network

  # ── Kafka UI (dev tooling) ───────────────────────────────────────────────────
  kafka-ui:
    image: provectuslabs/kafka-ui:latest
    container_name: kafka-ui
    depends_on:
      kafka:
        condition: service_healthy
    ports:
      - "8090:8080"
    environment:
      KAFKA_CLUSTERS_0_NAME: local
      KAFKA_CLUSTERS_0_BOOTSTRAPSERVERS: kafka:29092
      KAFKA_CLUSTERS_0_ZOOKEEPER: zookeeper:2181
    networks:
      - order-network

  # ── PostgreSQL ───────────────────────────────────────────────────────────────
  postgres:
    image: postgres:16-alpine
    container_name: postgres
    environment:
      POSTGRES_DB: orderdb
      POSTGRES_USER: orderuser
      POSTGRES_PASSWORD: orderpass
    ports:
      - "5432:5432"
    volumes:
      - postgres_data:/var/lib/postgresql/data
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U orderuser -d orderdb"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - order-network

  # ── Redis (Idempotency store) ────────────────────────────────────────────────
  redis:
    image: redis:7.2-alpine
    container_name: redis
    ports:
      - "6379:6379"
    command: redis-server --save 20 1 --loglevel warning
    volumes:
      - redis_data:/data
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 5
    networks:
      - order-network

  # ── Spring Boot Application ──────────────────────────────────────────────────
  app:
    build:
      context: .
      dockerfile: Dockerfile
    container_name: order-pipeline-app
    depends_on:
      kafka:
        condition: service_healthy
      postgres:
        condition: service_healthy
      redis:
        condition: service_healthy
    ports:
      - "8080:8080"
    environment:
      SPRING_PROFILES_ACTIVE: docker
      KAFKA_BOOTSTRAP_SERVERS: kafka:29092
      DB_HOST: postgres
      DB_PORT: 5432
      DB_NAME: orderdb
      DB_USER: orderuser
      DB_PASS: orderpass
      REDIS_HOST: redis
      REDIS_PORT: 6379
    healthcheck:
      test: ["CMD", "curl", "-f", "http://localhost:8080/actuator/health"]
      interval: 30s
      timeout: 10s
      retries: 5
      start_period: 60s
    networks:
      - order-network

volumes:
  postgres_data:
  redis_data:

networks:
  order-network:
    driver: bridge