# Licensed to the Apache Software Foundation (ASF) under one or more
# contributor license agreements.  See the NOTICE file distributed with
# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
# (the "License"); you may not use this file except in compliance with
# the License.  You may obtain a copy of the License at
#
#     http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.

version: "2.1"
services:
  zookeeper:
    image: wurstmeister/zookeeper
    ports:
      - "2181:2181"
  kafka-broker:
    image: wurstmeister/kafka:2.12-2.0.1
    ports:
      - "9092:9092"
    environment:
      HOSTNAME_COMMAND: "route -n | awk '/UG[ \t]/{print $$2}'"
      KAFKA_CREATE_TOPICS: "names:1:1,greetings:1:1"
      KAFKA_ZOOKEEPER_CONNECT: zookeeper:2181
    depends_on:
      - zookeeper
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock
  master:
    build:
      context: .
    # uncomment to start from a savepoint
    #command: -s /checkpoint-dir/savepoint/savepoint-bf101a-4e99820085fe
    expose:
      - "6123"
    ports:
      - "8081:8081"
    environment:
      - ROLE=master
      - MASTER_HOST=master
    volumes:
      - ./checkpoint-dir:/checkpoint-dir
  worker:
    build:
      context: .
    expose:
      - "6121"
      - "6122"
    depends_on:
      - master
      - kafka-broker
    links:
      - "master:master"
      - "kafka-broker:kafka-broker"
    environment:
      - ROLE=worker
      - MASTER_HOST=master
    volumes:
      - ./checkpoint-dir:/checkpoint-dir