ActiveMQ example source code file (DestinationFactoryImpl.java)

This example ActiveMQ source code file (DestinationFactoryImpl.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, activemqdestination, activemqtempdestination, destinationfactoryimpl, illegalstateexception, io, ioexception, override, override, persistenceadapter, persistenceadapter, queue, taskrunnerfactory, topic, topic, util

The ActiveMQ DestinationFactoryImpl.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.region;

import java.io.IOException;
import java.util.Set;
import org.apache.activemq.advisory.AdvisorySupport;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.ConnectionContext;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTempDestination;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.SubscriptionInfo;
import org.apache.activemq.store.MessageStore;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.store.TopicMessageStore;
import org.apache.activemq.thread.TaskRunnerFactory;

/**
 * Creates standard ActiveMQ implementations of
 * {@link org.apache.activemq.broker.region.Destination}.
 * 
 * @author fateev@amazon.com
 * 
 */
public class DestinationFactoryImpl extends DestinationFactory {

    protected final TaskRunnerFactory taskRunnerFactory;
    protected final PersistenceAdapter persistenceAdapter;
    protected RegionBroker broker;
    private final BrokerService brokerService;

    public DestinationFactoryImpl(BrokerService brokerService, TaskRunnerFactory taskRunnerFactory, PersistenceAdapter persistenceAdapter) {
        this.brokerService = brokerService;
        this.taskRunnerFactory = taskRunnerFactory;
        if (persistenceAdapter == null) {
            throw new IllegalArgumentException("null persistenceAdapter");
        }
        this.persistenceAdapter = persistenceAdapter;
    }

    @Override
    public void setRegionBroker(RegionBroker broker) {
        if (broker == null) {
            throw new IllegalArgumentException("null broker");
        }
        this.broker = broker;
    }

    @Override
    public Set<ActiveMQDestination> getDestinations() {
        return persistenceAdapter.getDestinations();
    }

    /**
     * @return instance of {@link Queue} or {@link Topic}
     */
    @Override
    public Destination createDestination(ConnectionContext context, ActiveMQDestination destination, DestinationStatistics destinationStatistics) throws Exception {
        if (destination.isQueue()) {
            if (destination.isTemporary()) {
                final ActiveMQTempDestination tempDest = (ActiveMQTempDestination)destination;
                Queue queue = new TempQueue(brokerService, destination, null, destinationStatistics, taskRunnerFactory);
                queue.initialize();
                return queue;
            } else {
                MessageStore store = persistenceAdapter.createQueueMessageStore((ActiveMQQueue)destination);
                Queue queue = new Queue(brokerService, destination, store, destinationStatistics, taskRunnerFactory);
                configureQueue(queue, destination);
                queue.initialize();
                return queue;
            }
        } else if (destination.isTemporary()) {
            
            Topic topic = new Topic(brokerService, destination, null, destinationStatistics, taskRunnerFactory);
            topic.initialize();
            return topic;
        } else {
            TopicMessageStore store = null;
            if (!AdvisorySupport.isAdvisoryTopic(destination)) {
                store = persistenceAdapter.createTopicMessageStore((ActiveMQTopic)destination);
            }
            Topic topic = new Topic(brokerService, destination, store, destinationStatistics, taskRunnerFactory);
            configureTopic(topic, destination);
            topic.initialize();
            return topic;
        }
    }

    @Override
    public void removeDestination(Destination dest) {
        ActiveMQDestination destination = dest.getActiveMQDestination();
        if (!destination.isTemporary()) {
            if (destination.isQueue()) {
                persistenceAdapter.removeQueueMessageStore((ActiveMQQueue) destination);
            }
            else if (!AdvisorySupport.isAdvisoryTopic(destination)) {
                persistenceAdapter.removeTopicMessageStore((ActiveMQTopic) destination);
            }
        }
    }

    protected void configureQueue(Queue queue, ActiveMQDestination destination) {
        if (broker == null) {
            throw new IllegalStateException("broker property is not set");
        }
        if (broker.getDestinationPolicy() != null) {
            PolicyEntry entry = broker.getDestinationPolicy().getEntryFor(destination);
            if (entry != null) {
                entry.configure(broker,queue);
            }
        }
    }

    protected void configureTopic(Topic topic, ActiveMQDestination destination) {
        if (broker == null) {
            throw new IllegalStateException("broker property is not set");
        }
        if (broker.getDestinationPolicy() != null) {
            PolicyEntry entry = broker.getDestinationPolicy().getEntryFor(destination);
            if (entry != null) {
                entry.configure(broker,topic);
            }
        }
    }

    @Override
    public long getLastMessageBrokerSequenceId() throws IOException {
        return persistenceAdapter.getLastMessageBrokerSequenceId();
    }

    public PersistenceAdapter getPersistenceAdapter() {
        return persistenceAdapter;
    }

    @Override
    public SubscriptionInfo[] getAllDurableSubscriptions(ActiveMQTopic topic) throws IOException {
        return persistenceAdapter.createTopicMessageStore(topic).getAllSubscriptions();
    }
}