6.Rabbitmq Topics

plugins { id 'java'
}

group 'com.nick'
version '1.0-SNAPSHOT'

sourceCompatibility = 1.8

repositories { mavenCentral()
}

dependencies { testCompile group: 'junit', name: 'junit', version: '4.12' compile group: 'com.rabbitmq', name: 'amqp-client', version: '5.2.0' compile group: 'org.slf4j', name: 'slf4j-api', version: '1.7.25' compile group: 'org.slf4j', name: 'slf4j-simple', version: '1.7.25' compile group: 'org.projectlombok', name: 'lombok', version: '1.18.0'
}

package com.nick.topics;

import com.rabbitmq.client.Channel;
import com.rabbitmq.client.Connection;
import com.rabbitmq.client.ConnectionFactory;

public class EmitLogTopic { private static final String EXCHANGE_NAME = "topic_logs"; public static void main(String[] argv) throws Exception { ConnectionFactory factory = new ConnectionFactory(); factory.setHost("192.168.5.136"); Connection connection = factory.newConnection(); Channel channel = connection.createChannel(); channel.exchangeDeclare(EXCHANGE_NAME, "topic"); //* (star) can substitute for exactly one word. //# (hash) can substitute for zero or more words. String routingKey = "com.nick.rabbit"; String message = "hello topic"; channel.basicPublish(EXCHANGE_NAME, routingKey, null, message.getBytes()); System.out.println(" [x] Sent '" + routingKey + "':'" + message + "'"); connection.close(); }
}

package com.nick.topics;


import com.rabbitmq.client.*;

import java.io.IOException;

public class ReceiveLogsTopic { private static final String EXCHANGE_NAME = "topic_logs"; public static void main(String[] argv) throws Exception { ConnectionFactory factory = new ConnectionFactory(); factory.setHost("192.168.5.136"); Connection connection = factory.newConnection(); Channel channel = connection.createChannel(); channel.exchangeDeclare(EXCHANGE_NAME, "topic"); String queueName = channel.queueDeclare().getQueue(); //* (star) can substitute for exactly one word. //# (hash) can substitute for zero or more words. //channel.queueBind(queueName, EXCHANGE_NAME, "*.*.rabbit"); channel.queueBind(queueName, EXCHANGE_NAME, "#.rabbit"); System.out.println(" [*] Waiting for messages. To exit press CTRL+C"); Consumer consumer = new DefaultConsumer(channel) { @Override public void handleDelivery(String consumerTag, Envelope envelope, AMQP.BasicProperties properties, byte[] body) throws IOException { String message = new String(body, "UTF-8"); System.out.println(" [x] Received '" + envelope.getRoutingKey() + "':'" + message + "'"); } }; channel.basicConsume(queueName, true, consumer); }
}