docker-compose.yml

version: "3"

services:
  producer:
    build:
      dockerfile: ./Dockerfile
      context: ./producer
    container_name: producer
    ports:
      - "7000:7000"
    command: bash -c "uvicorn main:app --host 0.0.0.0 --port 7000 --reload"
    depends_on:
      - zookeeper
      - broker
    networks:
      - kafka-network

  consumer:
    build:
      dockerfile: ./Dockerfile
      context: ./consumer
    container_name: consumer
    ports:
      - "8000:7000"
    command: bash -c "uvicorn main:app --host 0.0.0.0 --port 7000 --reload"
    depends_on:
      - zookeeper
      - broker
    networks:
      - kafka-network

  zookeeper:
    image: confluentinc/cp-zookeeper:7.0.1
    container_name: zookeeper
    environment:
      ZOOKEEPER_CLIENT_PORT: 2181
      ZOOKEEPER_TICK_TIME: 2000
    networks:
      - kafka-network

  broker:
    image: confluentinc/cp-kafka:7.0.1
    container_name: broker
    ports:
      # Configuring Kafka for access across networks:
      # https://www.confluent.io/blog/kafka-client-cannot-connect-to-broker-on-aws-on-docker-etc/
      - "9092:9092"
    depends_on:
      - zookeeper
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: 'zookeeper:2181'
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: PLAINTEXT:PLAINTEXT,PLAINTEXT_INTERNAL:PLAINTEXT
      KAFKA_ADVERTISED_LISTENERS: PLAINTEXT://broker:9092,PLAINTEXT_INTERNAL://broker:29092
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
      KAFKA_TRANSACTION_STATE_LOG_MIN_ISR: 1
      KAFKA_TRANSACTION_STATE_LOG_REPLICATION_FACTOR: 1
    networks:
      - kafka-network

networks:
  kafka-network:
    driver: bridge