ActiveMQ example source code file (VMTransportEmbeddedBrokerTest.java)

This example ActiveMQ source code file (VMTransportEmbeddedBrokerTest.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

activemqqueue, activemqqueue, brokertestsupport, exception, exception, message, net, network, producerinfo, stubconnection, stubconnection, transport, transport, uri, urisyntaxexception, vmtransportembeddedbrokertest

The ActiveMQ VMTransportEmbeddedBrokerTest.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.transport.vm;

import java.net.URI;
import java.net.URISyntaxException;

import javax.jms.DeliveryMode;

import org.apache.activemq.broker.BrokerRegistry;
import org.apache.activemq.broker.BrokerTestSupport;
import org.apache.activemq.broker.StubConnection;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.Message;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportFactory;
import org.apache.activemq.util.IOExceptionSupport;

/**
 * Used to see if the VM transport starts an embedded broker on demand.
 * 
 * 
 */
public class VMTransportEmbeddedBrokerTest extends BrokerTestSupport {

    public static void main(String[] args) {
        junit.textui.TestRunner.run(VMTransportEmbeddedBrokerTest.class);
    }

    public void testConsumerPrefetchAtOne() throws Exception {
        
        // Make sure the broker is created due to the connection being started.
        assertNull(BrokerRegistry.getInstance().lookup("localhost"));        
        StubConnection connection = createConnection();
        assertNotNull(BrokerRegistry.getInstance().lookup("localhost"));

        // Start a producer and consumer
        ConnectionInfo connectionInfo = createConnectionInfo();
        SessionInfo sessionInfo = createSessionInfo(connectionInfo);
        ProducerInfo producerInfo = createProducerInfo(sessionInfo);
        connection.send(connectionInfo);
        connection.send(sessionInfo);
        connection.send(producerInfo);
        
        ActiveMQQueue destination = new ActiveMQQueue("TEST");

        ConsumerInfo consumerInfo = createConsumerInfo(sessionInfo, destination);  
        consumerInfo.setPrefetchSize(1);
        connection.send(consumerInfo);
        
        // Send 2 messages to the broker.
        connection.send(createMessage(producerInfo, destination, DeliveryMode.NON_PERSISTENT));
        connection.send(createMessage(producerInfo, destination, DeliveryMode.NON_PERSISTENT));
        
        // Make sure only 1 message was delivered.
        Message m = receiveMessage(connection);
        assertNotNull(m);
        assertNoMessagesLeft(connection);
        
        // Make sure the broker is shutdown when the connection is stopped.
        assertNotNull(BrokerRegistry.getInstance().lookup("localhost"));        
        connection.stop();
        assertNull(BrokerRegistry.getInstance().lookup("localhost"));        
    }

    protected void setUp() throws Exception {
        // Don't call super since it manually starts up a broker.
    }
    protected void tearDown() throws Exception {
        // Don't call super since it manually tears down a broker.
    }
    protected StubConnection createConnection() throws Exception {
        try {
            Transport transport = TransportFactory.connect(new URI("vm://localhost?broker.persistent=false"));
            StubConnection connection = new StubConnection(transport);
            return connection;
        } catch (URISyntaxException e) {
            throw IOExceptionSupport.create(e);
        }
    }

}