Apache Kafka

Contents

Logstash

Producer

input {
  tcp { 
    port => 51415
    codec => "json"
  }
}

output {

  if "TA" in [tags] {

    kafka {
      codec => json
      bootstrap_servers => "kafka:29092"
      topic_id => "ta-topic"
    }
    
  } else if "AL" in [tags] {

    kafka {
      codec => json
      bootstrap_servers => "kafka:29092"
      topic_id => "al-topic"
    }
    
  } else {

    kafka {
      codec => json
      bootstrap_servers => "kafka:29092"
      topic_id => "msg-topic"
    }

  }

  stdout {
    codec => rubydebug
  }
}

version: '3.2'
services:
  zookeeper:
    image: confluentinc/cp-zookeeper:5.1.2
    networks:
      - kafka-net
    ports:
      - "32181:32181"
    deploy:
      placement:
        constraints:
         - node.role == worker
    environment:
      ZOOKEEPER_CLIENT_PORT: 32181
      ZOOKEEPER_TICK_TIME: 2000
      ZOOKEEPER_SYNC_LIMIT: 2
  kafka:
    image: confluentinc/cp-kafka:5.1.2
    networks:
      - kafka-net
    ports:
      - target: 29092
        published: 29092
        protocol: tcp
    deploy:
      placement:
        constraints:
         - node.role == worker
    environment:
      KAFKA_ZOOKEEPER_CONNECT: "zookeeper:32181"
      KAFKA_ADVERTISED_LISTENERS: "PLAINTEXT://kafka:29092"
      KAFKA_BROKER_ID: 2
      KAFKA_OFFSETS_TOPIC_REPLICATION_FACTOR: 1
  logstash:
    image: docker.elastic.co/logstash/logstash:6.6.2
    networks:
      - kafka-net
    ports:
      - "51415:51415"
    environment:
      LOGSPOUT: "ignore"
      XPACK_MONITORING_ENABLED: "false"
    volumes:
      - "logstash-conf:/usr/share/logstash/pipeline"
    deploy:   
      placement:
        constraints:
         - node.role == worker
      restart_policy:
        condition: on-failure
      resources:
        reservations:
          memory: 100m   
networks:
  kafka-net:
    driver: overlay
volumes:
  logstash-conf:
    driver: nfs
    driver_opts:
      share: 192.168.42.1:/home/adam/dockerStore/logstash/config/

pom.xml

                 <dependency>
			<groupId>ch.qos.logback</groupId>
			<artifactId>logback-classic</artifactId>
			<version>1.2.3</version>
			<scope>runtime</scope>
		</dependency>

		<dependency>
			<groupId>org.slf4j</groupId>
			<artifactId>slf4j-api</artifactId>
			<version>1.7.25</version>
		</dependency>

		<dependency>
			<groupId>net.logstash.logback</groupId>
			<artifactId>logstash-logback-encoder</artifactId>
			<version>5.3</version>
		</dependency>

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.slf4j.Marker;
import org.slf4j.MarkerFactory;
public class App 
{	
    private static final Logger logger = LoggerFactory.getLogger(App.class);
	
    public static void main( String[] args )
    {    	

        Marker taMarker = MarkerFactory.getMarker("TA");
        Marker alMarker = MarkerFactory.getMarker("AL");
    	
    	logger.info(taMarker, "Message to TA from: {}", "adam");    	
    	logger.info(alMarker, "Message to AL from: {}", "adam");
    	
        System.out.println( "Hello World!" );
    }
}