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ActiveMQ example source code file (BrowseOverNetworkTest.java)

This example ActiveMQ source code file (BrowseOverNetworkTest.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, browser, browser, classpathresource, classpathresource, destination, destination, exception, exception, message_count, messageconsumer, net, network, queuebrowser, string, util

The ActiveMQ BrowseOverNetworkTest.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.Arrays;
import java.util.Enumeration;

import javax.jms.Destination;
import javax.jms.MessageConsumer;
import javax.jms.QueueBrowser;

import org.apache.activemq.JmsMultipleBrokersTestSupport;
import org.apache.activemq.broker.region.QueueSubscription;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.util.MessageIdList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;

public class BrowseOverNetworkTest extends JmsMultipleBrokersTestSupport {
    private static final Logger LOG = LoggerFactory.getLogger(QueueSubscription.class);
    protected static final int MESSAGE_COUNT = 10;

    public void testBrowse() throws Exception {
        createBroker(new URI("broker:(tcp://localhost:61617)/BrokerB?persistent=false&useJmx=false"));
        createBroker(new URI("broker:(tcp://localhost:61616)/BrokerA?persistent=false&useJmx=false"));

        bridgeBrokers("BrokerA", "BrokerB");


        startAllBrokers();

        Destination dest = createDestination("TEST.FOO", false);

        sendMessages("BrokerA", dest, MESSAGE_COUNT);

        Thread.sleep(1000);

        int browsed = browseMessages("BrokerB", dest);

        Thread.sleep(1000);

        MessageConsumer clientA = createConsumer("BrokerA", dest);
        MessageIdList msgsA = getConsumerMessages("BrokerA", clientA);
        msgsA.waitForMessagesToArrive(MESSAGE_COUNT);

        Thread.sleep(1000);
        MessageConsumer clientB = createConsumer("BrokerB", dest);
        MessageIdList msgsB = getConsumerMessages("BrokerB", clientB);
        msgsB.waitForMessagesToArrive(MESSAGE_COUNT);

        LOG.info("A+B: " + msgsA.getMessageCount() + "+"
                + msgsB.getMessageCount());
        assertEquals("Consumer on Broker A, should've consumed all messages", MESSAGE_COUNT, msgsA.getMessageCount());
        assertEquals("Broker B shouldn't get any messages", 0, browsed);
    }

    public void testConsumerInfo() throws Exception {
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker1.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker2.xml"));

        startAllBrokers();

        brokers.get("broker1").broker.waitUntilStarted();


        Destination dest = createDestination("QUEUE.A,QUEUE.B", false);


        int broker1 = browseMessages("broker1", dest);
        assertEquals("Browsed a message on an empty queue", 0, broker1);
        Thread.sleep(1000);
        int broker2 = browseMessages("broker2", dest);
        assertEquals("Browsed a message on an empty queue", 0, broker2);

    }

    public class Browser extends Thread {

        String broker;
        Destination dest;
        int totalCount;
        QueueBrowser browser = null;
        MessageConsumer consumer = null;
        boolean consume = false;

        public Browser(String broker, Destination dest) {
            this.broker = broker;
            this.dest = dest;
        }

        public void run() {
            int retries = 0;
            while (retries++ < 5) {
                try {
                    QueueBrowser browser = createBrowser(broker, dest);
                    int count  = browseMessages(browser, broker);
                    if (consume) {
                        if (count != 0) {
                            MessageConsumer consumer = createSyncConsumer(broker, dest);
                            totalCount += count;
                            for (int i = 0; i < count; i++) {
                                ActiveMQTextMessage message = (ActiveMQTextMessage)consumer.receive(1000);
                                LOG.info(broker + " consumer: " + message.getText() + " " + message.getDestination() +  " " + message.getMessageId() + " " + Arrays.toString(message.getBrokerPath()));
                                if (message == null) break;
                            }
                        }
                    } else {
                        totalCount = count;
                    }
                    LOG.info("browser '" + broker + "' browsed " + totalCount);

                    Thread.sleep(1000);
                } catch (Exception e) {
                    LOG.info("Exception browsing " + e, e);
                } finally {
                    try {
                        if (browser != null) {
                            browser.close();
                        }
                        if (consumer != null) {
                            consumer.close();
                        }
                    } catch (Exception e) {
                        LOG.info("Exception closing browser " + e, e);
                    }
                }
            }
        }

        public int getTotalCount() {
            return totalCount;
        }
    }

    protected NetworkConnector bridgeBrokersWithIncludedDestination(String localBrokerName, String remoteBrokerName, ActiveMQDestination included, ActiveMQDestination excluded) throws Exception {
        NetworkConnector nc = bridgeBrokers(localBrokerName, remoteBrokerName, false, 4, true);
        nc.addStaticallyIncludedDestination(included);
        if (excluded != null) {
            nc.addExcludedDestination(excluded);
        }
        nc.setPrefetchSize(1);
        return nc;
    }

    public void testAMQ3020() throws Exception {
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker1A.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker1B.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker2A.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker2B.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker3A.xml"));
        createBroker(new ClassPathResource("org/apache/activemq/usecases/browse-broker3B.xml"));

        brokers.get("broker-1A").broker.waitUntilStarted();
        brokers.get("broker-2A").broker.waitUntilStarted();
        brokers.get("broker-3A").broker.waitUntilStarted();

        Destination composite = createDestination("PROD.FUSESOURCE.3.A,PROD.FUSESOURCE.3.B", false);

        Browser browser1 = new Browser("broker-3A", composite);
        browser1.start();

        Thread.sleep(1000);

        Browser browser2 = new Browser("broker-3B", composite);
        browser2.start();

        Thread.sleep(1000);

        sendMessages("broker-1A", composite, MESSAGE_COUNT);

        browser1.join();
        browser2.join();


        LOG.info("broker-3A browsed " + browser1.getTotalCount());
        LOG.info("broker-3B browsed " + browser2.getTotalCount());
        
        assertEquals(MESSAGE_COUNT * 2, browser1.getTotalCount() + browser2.getTotalCount() );

    }    

    protected int browseMessages(QueueBrowser browser, String name) throws Exception {
        Enumeration msgs = browser.getEnumeration();
        int browsedMessage = 0;
        while (msgs.hasMoreElements()) {
            browsedMessage++;
            ActiveMQTextMessage message = (ActiveMQTextMessage)msgs.nextElement();
            LOG.info(name + " browsed: " + message.getText() + " " + message.getDestination() +  " " + message.getMessageId() + " " + Arrays.toString(message.getBrokerPath()));
        }
        return browsedMessage;
    }


    protected int browseMessages(String broker, Destination dest) throws Exception {
        QueueBrowser browser = createBrowser(broker, dest);
        int browsedMessage = browseMessages(browser, "browser");
        browser.close();
        return browsedMessage;
    }

    public void setUp() throws Exception {
        super.setAutoFail(true);
        super.setUp();
    }

}

Other ActiveMQ examples (source code examples)

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

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