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ActiveMQ example source code file (DoubleSubscriptionTest.java)

This example ActiveMQ source code file (DoubleSubscriptionTest.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

activemqdestination, activemqqueue, connectioninfo, connectioninfo, consumerinfo, networktestsupport, producerinfo, sessioninfo, sessioninfo, string, stubconnection, stubconnection, test, test

The ActiveMQ DoubleSubscriptionTest.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.broker;

import javax.jms.DeliveryMode;

import junit.framework.Test;
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.Message;
import org.apache.activemq.command.MessageAck;
import org.apache.activemq.command.ProducerInfo;
import org.apache.activemq.command.SessionInfo;
import org.apache.activemq.network.NetworkTestSupport;

/**
 * Pretend to be an abusive client that sends multiple identical ConsumerInfo
 * commands and make sure the broker doesn't stall because of it.
 */

public class DoubleSubscriptionTest extends NetworkTestSupport {

    public ActiveMQDestination destination;
    public int deliveryMode;

    private String remoteURI = "tcp://localhost:0?wireFormat.tcpNoDelayEnabled=true";

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

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

    public void initCombosForTestDoubleSubscription() {
        addCombinationValues("destination", new Object[] {new ActiveMQQueue("TEST"), new ActiveMQQueue("TEST")});
    }

    public void testDoubleSubscription() throws Exception {

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

        // Start a normal producer on a remote broker
        StubConnection connection2 = createRemoteConnection();
        ConnectionInfo connectionInfo2 = createConnectionInfo();
        SessionInfo sessionInfo2 = createSessionInfo(connectionInfo2);
        ProducerInfo producerInfo2 = createProducerInfo(sessionInfo2);
        connection2.send(connectionInfo2);
        connection2.send(sessionInfo2);
        connection2.request(producerInfo2);

        // Send a message to make sure the basics are working
        connection2.request(createMessage(producerInfo2, destination, DeliveryMode.PERSISTENT));

        Message m1 = receiveMessage(connection1);
        assertNotNull(m1);
        assertNoMessagesLeft(connection1);

        connection1.send(createAck(consumerInfo1, m1, 1, MessageAck.STANDARD_ACK_TYPE));

        // Send a message to sit on the broker while we mess with it
        connection2.request(createMessage(producerInfo2, destination, DeliveryMode.PERSISTENT));

        // Now we're going to resend the same consumer commands again and see if
        // the broker
        // can handle it.
        connection1.send(connectionInfo1);
        connection1.send(sessionInfo1);
        connection1.request(consumerInfo1);

        // After this there should be 2 messages on the broker...
        connection2.request(createMessage(producerInfo2, destination, DeliveryMode.PERSISTENT));

        // ... let's start a fresh consumer...
        connection1.stop();
        StubConnection connection3 = createRemoteConnection();
        ConnectionInfo connectionInfo3 = createConnectionInfo();
        SessionInfo sessionInfo3 = createSessionInfo(connectionInfo3);
        ConsumerInfo consumerInfo3 = createConsumerInfo(sessionInfo3, destination);
        connection3.send(connectionInfo3);
        connection3.send(sessionInfo3);
        connection3.request(consumerInfo3);

        // ... and then grab the 2 that should be there.
        assertNotNull(receiveMessage(connection3));
        assertNotNull(receiveMessage(connection3));
        assertNoMessagesLeft(connection3);
    }

    protected String getRemoteURI() {
        return remoteURI;
    }

}

Other ActiveMQ examples (source code examples)

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