trunk/activemq-core/src/test/java/org/apache/activemq/RemoveDestinationTest.java

/**
 * 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;

import java.net.URI;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.Topic;
import javax.jms.TextMessage;
import javax.management.ObjectName;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.advisory.DestinationSource;
import org.apache.activemq.broker.BrokerFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQTopic;

import junit.framework.TestCase;

public class RemoveDestinationTest extends TestCase {

    private static final String VM_BROKER_URL = "vm://localhost?create=false";
    private static final String BROKER_URL = "broker:vm://localhost?broker.persistent=false&broker.useJmx=true";
    
    BrokerService broker;
    
    public RemoveDestinationTest(String name) {
        super(name);
    }

    protected void setUp() throws Exception {
        super.setUp();
        
        broker = BrokerFactory.createBroker(new URI(BROKER_URL));
        broker.start();
        
    }

    protected void tearDown() throws Exception {
        super.tearDown();
        broker.stop();
    }

    private Connection createConnection(final boolean start) throws JMSException {
        ConnectionFactory cf = new ActiveMQConnectionFactory(VM_BROKER_URL);
        Connection conn = cf.createConnection();
        if (start) {
            conn.start();
        }
        return conn;
    }

    public void testRemoveDestinationWithoutSubscriber() throws Exception {

        ActiveMQConnection amqConnection = (ActiveMQConnection) createConnection(true);
        DestinationSource destinationSource = amqConnection.getDestinationSource();
        Session session = amqConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic("TEST.FOO");
        MessageProducer producer = session.createProducer(topic);
        MessageConsumer consumer = session.createConsumer(topic);

        TextMessage msg = session.createTextMessage("Hellow World");
        producer.send(msg);
        assertNotNull( consumer.receive( 5000 ) );
        Thread.sleep( 1000 );

        ActiveMQTopic amqTopic = (ActiveMQTopic)topic;
        assertTrue( destinationSource.getTopics().contains(amqTopic) );

        consumer.close();
        producer.close();
        session.close();

        Thread.sleep( 3000 );
        
        amqConnection.destroyDestination( (ActiveMQDestination)topic );
        
        Thread.sleep( 3000 );

        assertFalse( destinationSource.getTopics().contains(amqTopic) );
    }

    public void testRemoveDestinationWithSubscriber() throws Exception {
        ActiveMQConnection amqConnection = (ActiveMQConnection) createConnection(true);
        DestinationSource destinationSource = amqConnection.getDestinationSource();
        
        Session session = amqConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
        Topic topic = session.createTopic("TEST.FOO");
        MessageProducer producer = session.createProducer(topic);
        MessageConsumer consumer = session.createConsumer(topic);

        TextMessage msg = session.createTextMessage("Hellow World");
        producer.send(msg);
        assertNotNull( consumer.receive( 5000 ) );
        Thread.sleep( 1000 );

        ActiveMQTopic amqTopic = (ActiveMQTopic)topic;

        assertTrue(destinationPresentInAdminView(broker, amqTopic));
        
        assertTrue( destinationSource.getTopics().contains(amqTopic) );

        // This line generates a broker error since the consumer is still active.
        try{
            amqConnection.destroyDestination( (ActiveMQDestination)topic );
            fail("expect exception on destroy if comsumer present");
        } catch( JMSException expected ) {
            assertTrue(expected.getMessage().indexOf(amqTopic.getTopicName()) != -1);
        }

        Thread.sleep( 3000 );

        assertTrue( destinationSource.getTopics().contains(amqTopic) );
        assertTrue(destinationPresentInAdminView(broker, amqTopic));
        
        consumer.close();
        producer.close();
        session.close();

        Thread.sleep( 3000 );

        // The destination will not be removed with this call, but if you remove the call
        // above that generates the error it will.
        amqConnection.destroyDestination( amqTopic );

        Thread.sleep( 3000 );

        assertFalse( destinationSource.getTopics().contains(amqTopic) );
        assertFalse(destinationPresentInAdminView(broker, amqTopic));
        
    }

    private boolean destinationPresentInAdminView(BrokerService broker2,
            ActiveMQTopic amqTopic) throws Exception {
        boolean found = false;
        for (ObjectName name : broker.getAdminView().getTopics()) {
            if (name.getKeyProperty("Destination") != null &&
                    name.getKeyProperty("Destination").equalsIgnoreCase(amqTopic.getTopicName())) {
                found = true;
                break;
            }   
        }
        return found;
    }
}