ActiveMQ example source code file (ThreeBrokerTempQueueNetworkTest.java)

This example ActiveMQ source code file (ThreeBrokerTempQueueNetworkTest.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

brokera, brokerb, brokerc, brokerc, brokerd, brokeritem, brokeritem, exception, exception, iterator, iterator, net, network, networkconnector, no, uri, util

The ActiveMQ ThreeBrokerTempQueueNetworkTest.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.usecases;

import java.net.URI;
import java.util.Iterator;

import javax.jms.Connection;
import javax.jms.Session;
import javax.jms.TemporaryQueue;

import org.apache.activemq.JmsMultipleBrokersTestSupport;
import org.apache.activemq.network.NetworkConnector;

/**
 * 
 */
public class ThreeBrokerTempQueueNetworkTest extends JmsMultipleBrokersTestSupport {
    protected static final int MESSAGE_COUNT = 100;
    boolean enableTempDestinationBridging = true;

    /**
     * BrokerA -> BrokerB -> BrokerC
     */
    public void testTempQueueCleanup() throws Exception {
        // Setup broker networks
        bridgeBrokers("BrokerA", "BrokerB", false, 2);
        bridgeBrokers("BrokerB", "BrokerC", false, 2);
        startAllBrokers();
        BrokerItem brokerItem = (BrokerItem)brokers.get("BrokerC");
        Connection conn = brokerItem.createConnection();
        conn.start();
        Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue tempQ = sess.createTemporaryQueue();
        Thread.sleep(5000);
        for (Iterator i = brokers.values().iterator(); i.hasNext();) {
            BrokerItem bi = (BrokerItem)i.next();
            assertEquals("No queues on broker " + bi.broker.getBrokerName(), 1, bi.broker.getAdminView().getTemporaryQueues().length);
        }
        tempQ.delete();
        Thread.sleep(2000);
        for (Iterator i = brokers.values().iterator(); i.hasNext();) {
            BrokerItem bi = (BrokerItem)i.next();
            assertEquals("Temp queue left behind on broker " + bi.broker.getBrokerName(), 0, bi.broker.getAdminView().getTemporaryQueues().length);
        }
    }

    // this actually uses 4 brokers ...
    public void testTempQueueRecovery() throws Exception {
        // Setup broker networks
        bridgeBrokers("BrokerA", "BrokerB", false, 3);
        bridgeBrokers("BrokerB", "BrokerC", false, 3);
        startAllBrokers();
        BrokerItem brokerItem = (BrokerItem)brokers.get("BrokerC");
        Connection conn = brokerItem.createConnection();
        conn.start();
        Session sess = conn.createSession(false, Session.AUTO_ACKNOWLEDGE);
        TemporaryQueue tempQ = sess.createTemporaryQueue();
        Thread.sleep(5000);
        for (Iterator i = brokers.values().iterator(); i.hasNext();) {
            BrokerItem bi = (BrokerItem)i.next();
            assertEquals("No queues on broker " + bi.broker.getBrokerName(), 1, bi.broker.getAdminView().getTemporaryQueues().length);
        }
        createBroker(new URI("broker:(tcp://localhost:61619)/BrokerD?persistent=false&useJmx=true"));
        bridgeBrokers("BrokerD", "BrokerA", false, 3);
        BrokerItem newBroker = (BrokerItem)brokers.get("BrokerD");
        newBroker.broker.start();
        Thread.sleep(1000);
        assertEquals("No queues on broker D", 1, newBroker.broker.getAdminView().getTemporaryQueues().length);
        tempQ.delete();
        Thread.sleep(2000);
        for (Iterator i = brokers.values().iterator(); i.hasNext();) {
            BrokerItem bi = (BrokerItem)i.next();
            assertEquals("Temp queue left behind on broker " + bi.broker.getBrokerName(), 0, bi.broker.getAdminView().getTemporaryQueues().length);
        }
    }

    public void testTempDisable() throws Exception {
        enableTempDestinationBridging = false;
        try {
            testTempQueueCleanup();
        } catch (Throwable e) {
            // Expecting an error
            return;
        }
        fail("Test should have failed since temp queues are disabled.");
    }

    public void setUp() throws Exception {
        super.setAutoFail(true);
        super.setUp();
        createBroker(new URI("broker:(tcp://localhost:61616)/BrokerA?persistent=false&useJmx=true"));
        createBroker(new URI("broker:(tcp://localhost:61617)/BrokerB?persistent=false&useJmx=true"));
        createBroker(new URI("broker:(tcp://localhost:61618)/BrokerC?persistent=false&useJmx=true"));
    }

    protected NetworkConnector bridgeBrokers(String localBrokerName, String remoteBrokerName, boolean dynamicOnly, int networkTTL) throws Exception {
        NetworkConnector connector = super.bridgeBrokers(localBrokerName, remoteBrokerName, dynamicOnly, networkTTL, true);
        connector.setBridgeTempDestinations(enableTempDestinationBridging);
        return connector;
    }

}