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ActiveMQ example source code file (AMQ2103Test.java)

This example ActiveMQ source code file (AMQ2103Test.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, activemqmapmessage, activemqmapmessage, activemqobjectmessage, activemqqueue, activemqtextmessage, activemqtextmessage, exception, message, myobject, policyentry, policyentry, test, test

The ActiveMQ AMQ2103Test.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.bugs;

import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import junit.framework.Test;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.ActiveMQSession;
import org.apache.activemq.broker.BrokerTestSupport;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMapMessage;
import org.apache.activemq.command.ActiveMQObjectMessage;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.usecases.MyObject;

public class AMQ2103Test extends BrokerTestSupport {
    static PolicyEntry reduceMemoryFootprint = new PolicyEntry();
    static {
        reduceMemoryFootprint.setReduceMemoryFootprint(true);
    }

    public PolicyEntry defaultPolicy = reduceMemoryFootprint;

    @Override
    protected PolicyEntry getDefaultPolicy() {
        return defaultPolicy;
    }

    public void initCombosForTestVerifyMarshalledStateIsCleared() throws Exception {
        addCombinationValues("defaultPolicy", new Object[]{defaultPolicy, null});    
    }

    public static Test suite() {
        return suite(AMQ2103Test.class);
    }

    /**
     * use mem persistence so no marshaling,
     * reduceMemoryFootprint on/off that will reduce memory by whacking the marshaled state
     * With vm transport and deferred serialisation and no persistence (mem persistence),
     * we see the message as sent by the client so we can validate the contents against
     * the policy
     * @throws Exception
     */
    public void testVerifyMarshalledStateIsCleared() throws Exception {

        ActiveMQConnectionFactory factory = new ActiveMQConnectionFactory("vm://localhost");
        factory.setOptimizedMessageDispatch(true);
        factory.setObjectMessageSerializationDefered(true);
        factory.setCopyMessageOnSend(false);

        Connection connection = factory.createConnection();
        Session session = (ActiveMQSession)connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        ActiveMQDestination destination = new ActiveMQQueue("testQ");
		MessageConsumer consumer = session.createConsumer(destination);
		connection.start();

        MessageProducer producer = session.createProducer(destination);
        final MyObject obj = new MyObject("A message");
        ActiveMQObjectMessage m1 = (ActiveMQObjectMessage)session.createObjectMessage();
        m1.setObject(obj);
        producer.send(m1);

        ActiveMQTextMessage m2 = new ActiveMQTextMessage();
        m2.setText("Test Message Payload.");
        producer.send(m2);

        ActiveMQMapMessage m3 = new ActiveMQMapMessage();
        m3.setString("text", "my message");
        producer.send(m3);

        Message m = consumer.receive(maxWait);
        assertNotNull(m);
        assertEquals(m1.getMessageId().toString(), m.getJMSMessageID());
        assertTrue(m instanceof ActiveMQObjectMessage);

        if (getDefaultPolicy() != null) {
            assertNull("object data cleared by reduceMemoryFootprint (and never marshalled as using mem persistence)",
                ((ActiveMQObjectMessage)m).getObject());
        }

        // verify no serialisation via vm transport
        assertEquals("writeObject called", 0, obj.getWriteObjectCalled());
        assertEquals("readObject called", 0, obj.getReadObjectCalled());
        assertEquals("readObjectNoData called", 0, obj.getReadObjectNoDataCalled());

        m = consumer.receive(maxWait);
        assertNotNull(m);
        assertEquals(m2.getMessageId().toString(), m.getJMSMessageID());
        assertTrue(m instanceof ActiveMQTextMessage);

        if (getDefaultPolicy() != null) {
            assertNull("text cleared by reduceMemoryFootprint (and never marshalled as using mem persistence)",
                ((ActiveMQTextMessage)m).getText());
        }

        m = consumer.receive(maxWait);
        assertNotNull(m);
        assertEquals(m3.getMessageId().toString(), m.getJMSMessageID());
        assertTrue(m instanceof ActiveMQMapMessage);

        if (getDefaultPolicy() != null) {
            assertNull("text cleared by reduceMemoryFootprint (and never marshalled as using mem persistence)",
                ((ActiveMQMapMessage)m).getStringProperty("text"));
        }

        connection.close();
    }
}

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