docker-compose.yml

version: '2'

services:
  zookeeper:
    image: wurstmeister/zookeeper
    container_name: zookeeper-container
    ports:
      - "2181:2181"
    restart: unless-stopped

  kafka:
    image: wurstmeister/kafka
    container_name: kafka-container
    ports:
      - "9092:9092"
    expose:
      - "9093"
    environment:
      KAFKA_ADVERTISED_LISTENERS: INSIDE://kafka:9093,OUTSIDE://localhost:9092
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: INSIDE:PLAINTEXT,OUTSIDE:PLAINTEXT
      KAFKA_LISTENERS: INSIDE://0.0.0.0:9093,OUTSIDE://0.0.0.0:9092
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      KAFKA_INTER_BROKER_LISTENER_NAME: INSIDE
      KAFKA_AUTO_CREATE_TOPICS_ENABLE: 'true'
      KAFKA_CREATE_TOPICS: "comments:1:1"
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    restart: unless-stopped
  
  cassandra-seed:
    image: cassandra:4.1.0
    ports:
      - "9042:9042"
    container_name: cassandra-seed-container
    environment:
      CASSANDRA_SEEDS: cassandra-seed
    restart: always
    healthcheck:
      test: ["CMD", "cqlsh", "-u cassandra", "-p cassandra" ,"-e describe keyspaces"]
      interval: 15s
      timeout: 10s
      retries: 10
    networks:
      - cassandra-network
      
  cassandra-init:
    container_name: cassandra-init
    image: cassandra:4.1.0
    depends_on:
      cassandra-seed:
        condition: service_healthy
    volumes:
      - ./cassandra-schema.cql:/schema.cql
    command: /bin/bash -c "echo Loading cassandra keyspace... && cqlsh cassandra-seed-container -f /schema.cql"
    networks:
      - cassandra-network

networks:
  cassandra-network:
    driver: bridge