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ActiveMQ example source code file (CamelVMTransportRoutingTest.java)

This example ActiveMQ source code file (CamelVMTransportRoutingTest.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - ActiveMQ tags/keywords

brokerservice, brokerservice, connection, exception, exception, messageconsumer, msg_count, receiver_topic, sender_topic, session, string, string, textmessage, textmessage

The ActiveMQ CamelVMTransportRoutingTest.java source code

/**
 *
 * 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.
 */
package org.apache.activemq.camel;

import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.camel.component.ActiveMQComponent;
import org.apache.activemq.util.ThreadTracker;
import org.apache.camel.CamelContext;
import org.apache.camel.builder.RouteBuilder;
import org.apache.camel.impl.DefaultCamelContext;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.junit.Assert;

// see: https://issues.apache.org/activemq/browse/AMQ-2966
public class CamelVMTransportRoutingTest extends TestCase {

    private static final Logger log = LoggerFactory.getLogger(CamelVMTransportRoutingTest.class);

    private BrokerService broker = null;
    private TransportConnector connector = null;
    private CamelContext camelContext = null;

    private Connection senderConnection;
    private Connection receiverConnection1;
    private Connection receiverConnection2;

    private final String MSG_STRING = "MESSAGE-TEXT";
    private final String SENDER_TOPIC = "A";
    private final String RECEIVER_TOPIC = "B";

    public void testSendReceiveWithCamelRouteIntercepting() throws Exception {

    	final int MSG_COUNT = 1000;

    	Session sendSession = senderConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
    	Session receiverSession1 = receiverConnection1.createSession(false, Session.AUTO_ACKNOWLEDGE);
    	Session receiverSession2 = receiverConnection2.createSession(false, Session.AUTO_ACKNOWLEDGE);

    	Destination sendTo = sendSession.createTopic(SENDER_TOPIC);
    	Destination receiveFrom = receiverSession1.createTopic(RECEIVER_TOPIC);

    	TextMessage message = sendSession.createTextMessage(MSG_STRING);

    	MessageConsumer receiver1 = receiverSession1.createConsumer(receiveFrom);
    	MessageConsumer receiver2 = receiverSession2.createConsumer(receiveFrom);

    	MessageProducer sender = sendSession.createProducer(sendTo);
    	for( int i = 0; i < MSG_COUNT; ++i ) {
    		sender.send(message);
    	}

    	for( int i = 0; i < MSG_COUNT; ++i ) {

    		log.debug("Attempting Received for Message #" + i);
    		TextMessage received1 = (TextMessage) receiver1.receive(5000);
        	Assert.assertNotNull(received1);
        	Assert.assertEquals(MSG_STRING, received1.getText());
        }
    }

    protected BrokerService createBroker() throws Exception {

    	BrokerService service = new BrokerService();
        service.setPersistent(false);
        service.setUseJmx(false);
        connector = service.addConnector("tcp://localhost:0");

        return service;
    }

    public void setUp() throws Exception {

    	broker = createBroker();
    	broker.start();
    	broker.waitUntilStarted();

    	Thread.sleep(1000);

    	createCamelContext();

        ActiveMQConnectionFactory connFactory = new ActiveMQConnectionFactory(connector.getConnectUri());
        senderConnection = connFactory.createConnection();
        receiverConnection1 = connFactory.createConnection();
        receiverConnection2 = connFactory.createConnection();

        receiverConnection1.start();
        receiverConnection2.start();
    }

    public void tearDown() throws Exception {

    	if( senderConnection != null ) {
    		senderConnection.close();
    	}

    	if( receiverConnection1 != null ) {
    		receiverConnection1.close();
    	}

    	if( receiverConnection2 != null ) {
    		receiverConnection2.close();
    	}

    	camelContext.stop();
    	broker.stop();

        ThreadTracker.result();
    }

    private void createCamelContext() throws Exception {

        final String fromEndpoint = "activemq:topic:" + SENDER_TOPIC;
        final String toEndpoint = "activemq:topic:" + RECEIVER_TOPIC;

    	log.info("creating context and sending message");
        camelContext = new DefaultCamelContext();
        camelContext.addComponent("activemq",
        		ActiveMQComponent.activeMQComponent("vm://localhost?create=false&waitForStart=10000"));
        camelContext.addRoutes(new RouteBuilder() {
            @Override
            public void configure() throws Exception {
                from(fromEndpoint).to(toEndpoint);
            }
        });
        camelContext.start();
    }

}

Other ActiveMQ examples (source code examples)

Here is a short list of links related to this ActiveMQ CamelVMTransportRoutingTest.java source code file:

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