docker-compose.yml

version: '3.9'

################################################################################

x-app: &app
  build: &app-build
    context: .
    dockerfile: Dockerfile.app
  profiles:
    - app
  command:
    - /bin/sh
    - -c
    - "while : ; do sleep 60 ; done"
  restart: unless-stopped

x-consumer: &consumer
  <<: *app
  command:
    - app
  environment:
    KAFKA_TOPIC: "example"
    KAFKA_BROKERS: "kafka-1:9092,kafka-2:9092,kafka-3:9092"
    KAFKA_CONSUMER_GROUP: "example-consumer-group"
  build:
    <<: *app-build
    args:
      BUILD_TARGET: "consumer"

x-producer: &producer
  <<: *app
  command:
    - app
  environment:
    KAFKA_TOPIC: "example"
    KAFKA_BROKERS: "kafka-1:9092,kafka-2:9092,kafka-3:9092"
  build:
    <<: *app-build
    args:
      BUILD_TARGET: "producer"

x-kafka: &kafka
  build: &kafka-build
    context: .
    dockerfile: Dockerfile.kafka
    args:
      JMX_JAVAAGENT_VERSION: "${JMX_JAVAAGENT_VERSION}"
  environment: &kafka-env
    HOME: /opt/bitnami/kafka
    KAFKA_CFG_ZOOKEEPER_CONNECT: "zookeeper:2181"
    ALLOW_PLAINTEXT_LISTENER: "yes"
    KAFKA_OPTS: >-
      -javaagent:/opt/bitnami/kafka/libs/jmx_prometheus_javaagent-${JMX_JAVAAGENT_VERSION}.jar=${JMX_JAVAAGENT_PORT}:/etc/kafka/prometheus/kafka.yml
  volumes:
    - ./jmx-exporter/kafka.yml:/etc/kafka/prometheus/kafka.yml:ro
  depends_on:
    - zookeeper

x-zookeeper: &zookeeper
  image: docker.io/bitnami/zookeeper:${ZK_VERSION}
  volumes:
    - "zookeeper:/bitnami"
  environment:
    ALLOW_ANONYMOUS_LOGIN: "yes"

x-redpanda-console: &redpanda-console
  image: docker.redpanda.com/vectorized/console:v${REDPANDA_CONSOLE_VERSION}
  entrypoint: /bin/sh
  command: -c 'echo "$$CONSOLE_CONFIG_FILE" > /tmp/config.yml; /app/console'
  environment: 
    CONFIG_FILEPATH: /tmp/config.yml
    CONSOLE_CONFIG_FILE: |
      kafka:
        brokers: ["kafka-1:9092", "kafka-2:9092", "kafka-3:9092"]
        schemaRegistry:
          enabled: false
          urls: ["http://redpanda-0:8081"]
  ports:
    - ${REDPANDA_CONSOLE_PORT}:8080
  depends_on:
    - kafka-1
    - kafka-2
    - kafka-3

x-kafka-exporter: &kafka-exporter
  image: docker.io/bitnami/kafka-exporter:${KAFKA_EXPORTER_VERSION}
  restart: unless-stopped
  command: ["--kafka.server=kafka-1:9092"]
  # profiles:
  #   - metrics

x-prometheus: &prometheus
  image: quay.io/prometheus/prometheus:${PROMETHEUS_VERSION}
  volumes:
    - ./prometheus/prometheus.yml:/etc/prometheus/prometheus.yml
  ports:
    - ${PROMETHEUS_PORT}:9090
  # profiles:
  #   - metrics

x-grafana: &grafana
  image: docker.io/grafana/grafana:${GRAFANA_VERSION}
  user: root
  restart: unless-stopped
  ports:
    - ${GRAFANA_PORT}:3000
  volumes:
    - grafana:/var/lib/grafana
    - ./grafana/provisioning:/etc/grafana/provisioning
    - ./grafana/dashboards:/var/lib/grafana/dashboards
  # profiles:
  #   - metrics
  environment:
    GF_SECURITY_ADMIN_PASSWORD: admin

################################################################################

services:
  # Sample consumer
  consumer-1:
    <<: *consumer
    container_name: consumer-1
  consumer-2:
    <<: *consumer
    container_name: consumer-2
  consumer-3:
    <<: *consumer
    container_name: consumer-3

  # Sample producer
  producer:
    <<: *producer
    container_name: producer-1

  # Zookeeper quorum
  zookeeper:
    <<: *zookeeper
    container_name: zookeeper

  # Redpanda Console UI
  ui:
    <<: *redpanda-console
    container_name: ui

  # Kafka: broker #1
  kafka-1:
    <<: *kafka
    container_name: kafka-1
    environment:
      <<: *kafka-env
      KAFKA_BROKER_ID: 1

  # Kafka: broker #2
  kafka-2:
    <<: *kafka
    container_name: kafka-2
    environment:
      <<: *kafka-env
      KAFKA_BROKER_ID: 2

  # Kafka: broker #3
  kafka-3:
    <<: *kafka
    container_name: kafka-3
    environment:
      <<: *kafka-env
      KAFKA_BROKER_ID: 3

  # Grafana
  grafana:
    <<: *grafana
    container_name: grafana

  # Prometheus
  prometheus:
    <<: *prometheus
    container_name: prometheus

  # Prometheus
  kafka-exporter:
    <<: *kafka-exporter
    container_name: kafka-exporter

################################################################################

volumes:
  zookeeper:
    driver: local
  grafana:
    driver: local