services:
  zookeeper:
    image: confluentinc/cp-zookeeper:7.6.0
    hostname: zookeeper
    container_name: zookeeper
    ports:
      - "2181:2181"
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    volumes:
      - zookeeper-data:/var/lib/zookeeper/data
      - zookeeper-logs:/var/lib/zookeeper/log

  kafka1:
    image: confluentinc/cp-kafka:7.6.0
    hostname: kafka1
    container_name: kafka1
    depends_on:
      - zookeeper
    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://kafka1:29092,PLAINTEXT_HOST://localhost:9092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 3
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 2
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 3
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_JMX_PORT: 9101
      KAFKA_JMX_HOSTNAME: localhost
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: 'true'
    volumes:
      - kafka1-data:/var/lib/kafka/data

  kafka2:
    image: confluentinc/cp-kafka:7.6.0
    hostname: kafka2
    container_name: kafka2
    depends_on:
      - zookeeper
    ports:
      - "9093:9093"
      - "9102:9102"
    environment:
      KAFKA_BROKER_ID: 2
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka2:29093,PLAINTEXT_HOST://localhost:9093
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 3
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 2
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 3
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_JMX_PORT: 9102
      KAFKA_JMX_HOSTNAME: localhost
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: 'true'
    volumes:
      - kafka2-data:/var/lib/kafka/data

  kafka3:
    image: confluentinc/cp-kafka:7.6.0
    hostname: kafka3
    container_name: kafka3
    depends_on:
      - zookeeper
    ports:
      - "9094:9094"
      - "9103:9103"
    environment:
      KAFKA_BROKER_ID: 3
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_HOST:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://kafka3:29094,PLAINTEXT_HOST://localhost:9094
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 3
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 2
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 3
      KAFKA_GROUP_INITIAL_REBALANCE_DELAY_MS: 0
      KAFKA_JMX_PORT: 9103
      KAFKA_JMX_HOSTNAME: localhost
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: 'true'
    volumes:
      - kafka3-data:/var/lib/kafka/data

  cassandra:
    image: cassandra:5.0
    hostname: cassandra
    container_name: cassandra
    ports:
      - "9042:9042"  # CQL native transport port
      - "7000:7000"  # Inter-node cluster communication
      - "7199:7199"  # JMX monitoring port
    environment:
      CASSANDRA_CLUSTER_NAME: 'MyCluster'
      CASSANDRA_DC: 'dc1'
      CASSANDRA_RACK: 'rack1'
      CASSANDRA_ENDPOINT_SNITCH: 'GossipingPropertyFileSnitch'
      CASSANDRA_NUM_TOKENS: 256
      # Reduce memory usage for local development
      MAX_HEAP_SIZE: '512M'
      HEAP_NEWSIZE: '128M'
      # Override JVM opts to limit direct memory to fit in container
      JVM_OPTS: '-Xms512M -Xmx512M -XX:MaxDirectMemorySize=256M'
    volumes:
      - cassandra-data:/var/lib/cassandra
    # Limit container memory (increased to accommodate heap + direct memory + overhead)
    mem_limit: 2g
    memswap_limit: 2g
    # Disable swap for better performance
    mem_swappiness: 0
    # Allow memory locking (reduces warnings)
    ulimits:
      memlock: -1
      nofile:
        soft: 65536
        hard: 65536
    healthcheck:
      test: ["CMD-SHELL", "cqlsh -e 'describe cluster'"]
      interval: 30s
      timeout: 10s
      retries: 5

  imgproxy:
    image: darthsim/imgproxy:latest
    hostname: imgproxy
    container_name: imgproxy
    ports:
      - "9525:9525"
    environment:
      IMGPROXY_BIND: ":9525"
      IMGPROXY_ONLY_PRESETS: "true"
      IMGPROXY_BASE_URL: "http://localhost:9525"
      IMGPROXY_USE_ETAG: "true"
      IMGPROXY_PRESETS: "fullsize=resizing_type:fit/width:2000/height:2000/format:jpeg,thumb=resizing_type:fit/width:200/height:200/format:jpeg"
    restart: unless-stopped

volumes:
  zookeeper-data:
  zookeeper-logs:
  kafka1-data:
  kafka2-data:
  kafka3-data:
  cassandra-data: