ActiveMQ example source code file (DiscoveryTransportBrokerTest.java)

This example ActiveMQ source code file (DiscoveryTransportBrokerTest.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

connectioninfo, exception, exception, io, ioexception, net, network, sessioninfo, string, string, stubconnection, stubconnection, test, transportconnector, transportconnector, uri, urisyntaxexception

The ActiveMQ DiscoveryTransportBrokerTest.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.discovery;

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;

import javax.jms.DeliveryMode;

import junit.framework.Test;

import org.apache.activemq.broker.StubConnection;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ConnectionInfo;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.network.NetworkTestSupport;
import org.apache.activemq.transport.Transport;
import org.apache.activemq.transport.TransportFactory;
import org.apache.activemq.transport.failover.FailoverTransport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DiscoveryTransportBrokerTest extends NetworkTestSupport {

    private static final Logger LOG = LoggerFactory.getLogger(DiscoveryTransportBrokerTest.class);

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

    public void testPublisherFailsOver() throws Exception {
        ActiveMQDestination destination = new ActiveMQQueue("TEST");
        int deliveryMode = DeliveryMode.NON_PERSISTENT;

        // Start a normal consumer on the local broker
        StubConnection connection1 = createConnection();
        ConnectionInfo connectionInfo1 = createConnectionInfo();
        SessionInfo sessionInfo1 = createSessionInfo(connectionInfo1);
        ConsumerInfo consumerInfo1 = createConsumerInfo(sessionInfo1, destination);
        connection1.send(connectionInfo1);
        connection1.send(sessionInfo1);
        connection1.request(consumerInfo1);

        // Start a normal consumer on a remote broker
        StubConnection connection2 = createRemoteConnection();
        ConnectionInfo connectionInfo2 = createConnectionInfo();
        SessionInfo sessionInfo2 = createSessionInfo(connectionInfo2);
        ConsumerInfo consumerInfo2 = createConsumerInfo(sessionInfo2, destination);
        connection2.send(connectionInfo2);
        connection2.send(sessionInfo2);
        connection2.request(consumerInfo2);

        // Start a failover publisher.
        StubConnection connection3 = createFailoverConnection();
        ConnectionInfo connectionInfo3 = createConnectionInfo();
        SessionInfo sessionInfo3 = createSessionInfo(connectionInfo3);
        ProducerInfo producerInfo3 = createProducerInfo(sessionInfo3);
        connection3.send(connectionInfo3);
        connection3.send(sessionInfo3);
        connection3.send(producerInfo3);

        // Send the message using the fail over publisher.
        connection3.request(createMessage(producerInfo3, destination, deliveryMode));

        // The message will be sent to one of the brokers.
        FailoverTransport ft = (FailoverTransport)connection3.getTransport().narrow(FailoverTransport.class);

        // See which broker we were connected to.
        StubConnection connectionA;
        StubConnection connectionB;
        TransportConnector serverA;
        if (connector.getServer().getConnectURI().getPort() == ft.getConnectedTransportURI().getPort()) {
            connectionA = connection1;
            connectionB = connection2;
            serverA = connector;
        } else {
            connectionA = connection2;
            connectionB = connection1;
            serverA = remoteConnector;
        }

        assertNotNull(receiveMessage(connectionA));
        assertNoMessagesLeft(connectionB);

        // Dispose the server so that it fails over to the other server.
        LOG.info("Disconnecting active server");
        serverA.stop();

        LOG.info("Sending request that should failover");
        connection3.request(createMessage(producerInfo3, destination, deliveryMode));

        assertNotNull(receiveMessage(connectionB));
        assertNoMessagesLeft(connectionA);

    }

    protected String getLocalURI() {
        return "tcp://localhost:0?wireFormat.tcpNoDelayEnabled=true";
    }

    protected String getRemoteURI() {
        return "tcp://localhost:0?wireFormat.tcpNoDelayEnabled=true";
    }

    protected TransportConnector createConnector() throws Exception, IOException, URISyntaxException {
        TransportConnector x = super.createConnector();
        x.setDiscoveryUri(new URI(getDiscoveryUri()));
        return x;
    }

    protected String getDiscoveryUri() {
    	if ( groupName == null ) {
    		groupName = "group-"+System.currentTimeMillis();
    	}
        return "multicast://default?group="+groupName;
    }

    protected TransportConnector createRemoteConnector() throws Exception, IOException, URISyntaxException {
        TransportConnector x = super.createRemoteConnector();
        x.setDiscoveryUri(new URI(getDiscoveryUri()));
        return x;
    }

    protected StubConnection createFailoverConnection() throws Exception {
        URI failoverURI = new URI("discovery:" + getDiscoveryUri());
        Transport transport = TransportFactory.connect(failoverURI);
        StubConnection connection = new StubConnection(transport);
        connections.add(connection);
        return connection;
    }

    public static Test suite() {
        return suite(DiscoveryTransportBrokerTest.class);
    }

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

}