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ActiveMQ example source code file (VmTransportNetworkBrokerTest.java)

This example ActiveMQ source code file (VmTransportNetworkBrokerTest.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

activemqconnectionfactory, activemqconnectionfactory, brokerservice, brokerservice, connection, countdownlatch, countdownlatch, net, network, networkconnector, string, testcase, threading, threads, threads, uri, vm_broker_uri

The ActiveMQ VmTransportNetworkBrokerTest.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.util.concurrent.CountDownLatch;
import java.util.concurrent.TimeUnit;

import javax.jms.Connection;
import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.bugs.embedded.ThreadExplorer;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.thread.DefaultThreadPools;


public class VmTransportNetworkBrokerTest extends TestCase {

    private static final String VM_BROKER_URI = 
        "vm://localhost?create=false";
    
    CountDownLatch started = new CountDownLatch(1);
    CountDownLatch gotConnection = new CountDownLatch(1);

    public void testNoThreadLeak() throws Exception {

        // with VMConnection and simple discovery network connector
        int originalThreadCount = Thread.activeCount();
        BrokerService broker = new BrokerService();
        broker.setDedicatedTaskRunner(true);
        broker.setPersistent(false);
        broker.addConnector("tcp://localhost:61616");
        NetworkConnector networkConnector = broker.addNetworkConnector("static:(tcp://wrongHostname1:61617,tcp://wrongHostname2:61618)?useExponentialBackOff=false");
        networkConnector.setDuplex(true);
        broker.start();
        
        ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory(new URI(VM_BROKER_URI));
        Connection connection = cf.createConnection("system", "manager");
        connection.start();
        
        // let it settle
        TimeUnit.SECONDS.sleep(5);
        
        int threadCountAfterStart = Thread.activeCount();
        TimeUnit.SECONDS.sleep(30);
        int threadCountAfterSleep = Thread.activeCount();
        
        assertTrue("Threads are leaking: " + ThreadExplorer.show("active sleep") + ", threadCount=" +threadCountAfterStart + " threadCountAfterSleep=" + threadCountAfterSleep,
                threadCountAfterSleep < threadCountAfterStart + 8);

        connection.close();
        broker.stop();
        broker.waitUntilStopped();

        // testNoDanglingThreadsAfterStop with tcp transport

        broker = new BrokerService();
        broker.setSchedulerSupport(true);
        broker.setDedicatedTaskRunner(true);
        broker.setPersistent(false);
        broker.addConnector("tcp://localhost:61616?wireFormat.maxInactivityDuration=1000&wireFormat.maxInactivityDurationInitalDelay=1000");
        broker.start();

        cf = new ActiveMQConnectionFactory("tcp://localhost:61616?wireFormat.maxInactivityDuration=1000&wireFormat.maxInactivityDurationInitalDelay=1000");
        connection = cf.createConnection("system", "manager");
        connection.start();
        connection.close();
        broker.stop();
        broker.waitUntilStopped();

        // must only be called when all brokers and connections are done!
        DefaultThreadPools.shutdown();

        // let it settle
        TimeUnit.SECONDS.sleep(5);        
        
        int threadCountAfterStop = Thread.activeCount();
        assertTrue("Threads are leaking: " + ThreadExplorer.show("active after stop") + ". originalThreadCount=" + originalThreadCount + " threadCountAfterStop=" + threadCountAfterStop,
                threadCountAfterStop == originalThreadCount);

    }
}

Other ActiveMQ examples (source code examples)

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

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