com.DeadLetterReceiver.java Source code

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Here is the source code for com.DeadLetterReceiver.java

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/*
 *  Copyright (c) 2015, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
 *
 *  Licensed 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.
 */

package com;

import java.io.IOException;
import com.rabbitmq.client.*;

public class DeadLetterReceiver {

    static String QUEUE_NAME = "callback-queue";
    static String HOSTNAME = "localhost";

    public static void main(String[] args)
            throws IOException, ShutdownSignalException, ConsumerCancelledException, InterruptedException {

        ConnectionFactory factory = new ConnectionFactory();
        factory.setHost(HOSTNAME);
        Connection connection = factory.newConnection();
        Channel channel = connection.createChannel();

        //creating reply queue
        try {
            channel.queueDeclarePassive(QUEUE_NAME);
        } catch (java.io.IOException e) {
            if (!channel.isOpen())
                channel = connection.createChannel();
            channel.queueDeclare(QUEUE_NAME, false, false, false, null);
        }

        System.out.println(" [*] Waiting for responses. To exit press CTRL+C");
        QueueingConsumer consumer = new QueueingConsumer(channel);
        channel.basicConsume(QUEUE_NAME, true, consumer);

        while (true) {
            QueueingConsumer.Delivery delivery = consumer.nextDelivery();
            BasicProperties props = delivery.getProperties();
            String message = new String(delivery.getBody());
            System.out.println(" [x] Response received '" + message + "'");
            System.out.println("Correlation id : " + props.getCorrelationId());
        }
    }
}