docker-compose.yml

version: "3"
services:
  kalix-runtime:
    image: registry.akka.io/kalix-runtime:1.2.39
    container_name: java-protobuf-customer-registry-kafka-quickstart
    # uncomment volumes when persistence is enabled
#    volumes:
#      - ./target/kalix:/var/kalix
    ports:
      - "${ADVERTISED_HTTP_PORT}:9000"
    extra_hosts:
      - "host.docker.internal:host-gateway"
    environment:
      PERSISTENCE_ENABLED: "false" #when true uncomment volumes above
      JAVA_TOOL_OPTIONS: >
        -Dkalix.proxy.eventing.support=kafka
      # those variables are defined in the .env file
      # when running multiple services on your local machine, make sure that 
      # the ports are unique by editing the corresponding .env files
      ADVERTISED_HTTP_PORT: ${ADVERTISED_HTTP_PORT}
      USER_SERVICE_HOST: ${USER_SERVICE_HOST}
      USER_SERVICE_PORT: ${USER_SERVICE_PORT}
      # configuring kafka broker used for eventing
      BROKER_SERVERS: kafka:29092

  kafka:
    image: confluentinc/cp-kafka:7.2.6
    depends_on:
      - zookeeper
    ports:
      - 9092:9092 # used when running clients from containerized Kalix Runtime
      - 9093:9093 # used when running non-docker clients from host
    extra_hosts:
      - "host.docker.internal:host-gateway"
    environment:
      KAFKA_BROKER_ID: 1
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
      # advertised listener running on port 9092 must be accessible to kalix-runtime service running for integration tests
      # therefore we need to use host.docker.internal (docker's bridge address) to access it through the host machine
      # advertised listener running on port 9093 is to be used by non-docker clients running on host machine
      KAFKA_ADVERTISED_LISTENERS: INTERNAL://kafka:29092,EXTERNAL_DOCKER://host.docker.internal:9092,HOST://localhost:9093
      KAFKA_LISTENER_SECURITY_PROTOCOL_MAP: INTERNAL:PLAINTEXT,EXTERNAL_DOCKER:PLAINTEXT,HOST:PLAINTEXT
      KAFKA_INTER_BROKER_LISTENER_NAME: INTERNAL
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
    healthcheck:
      test: nc -z localhost 9092 || exit -1
      start_period: 10s
      interval: 5s
      timeout: 10s
      retries: 10

  zookeeper:
    image: zookeeper:3.9
    ports:
      - "2181:2181"