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ActiveMQ Pooled ConnectionFactory
There is a newer version: 6.1.4
/**
 * 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.pool;

import java.io.IOException;
import java.util.HashMap;
import java.util.Properties;

import javax.jms.Connection;
import javax.naming.NamingException;
import javax.naming.Reference;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.Service;
import org.apache.activemq.jms.pool.ConnectionPool;
import org.apache.activemq.jndi.JNDIReferenceFactory;
import org.apache.activemq.jndi.JNDIStorableInterface;
import org.apache.activemq.transport.TransportListener;
import org.apache.activemq.util.IntrospectionSupport;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 * Add Service and Referenceable and TransportListener to @link{org.apache.activemq.jms.pool.PooledConnectionFactory}
 *
 * @org.apache.xbean.XBean element="pooledConnectionFactory"
 */
public class PooledConnectionFactory extends org.apache.activemq.jms.pool.PooledConnectionFactory implements JNDIStorableInterface, Service {
    public static final String POOL_PROPS_PREFIX = "pool";

    private static final transient Logger LOG = LoggerFactory.getLogger(org.apache.activemq.jms.pool.PooledConnectionFactory.class);

    public PooledConnectionFactory() {
        super();
    }

    public PooledConnectionFactory(ActiveMQConnectionFactory activeMQConnectionFactory) {
        setConnectionFactory(activeMQConnectionFactory);
    }

    public PooledConnectionFactory(String brokerURL) {
        setConnectionFactory(new ActiveMQConnectionFactory(brokerURL));
    }

    @SuppressWarnings({ "unchecked", "rawtypes" })
    protected void buildFromProperties(Properties props) {
        ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory();
        activeMQConnectionFactory.buildFromProperties(props);
        setConnectionFactory(activeMQConnectionFactory);
        IntrospectionSupport.setProperties(this, new HashMap(props), POOL_PROPS_PREFIX);
    }

    @Override
    protected void populateProperties(Properties props) {
        ((ActiveMQConnectionFactory)getConnectionFactory()).populateProperties(props);
        super.populateProperties(props);
    }

    @Override
    public void setProperties(Properties properties) {
        buildFromProperties(properties);
    }

    @Override
    public Properties getProperties() {
        Properties properties = new Properties();
        populateProperties(properties);
        return properties;
    }

    @Override
    public Reference getReference() throws NamingException {
        return JNDIReferenceFactory.createReference(this.getClass().getName(), this);
    }

    @Override
    protected Connection newPooledConnection(ConnectionPool connection) {
        return new PooledConnection(connection);
    }

    @Override
    protected org.apache.activemq.jms.pool.ConnectionPool createConnectionPool(Connection connection) {
        return new ConnectionPool(connection) {

            @Override
            protected Connection wrap(final Connection connection) {
                // Add a transport Listener so that we can notice if this connection
                // should be expired due to a connection failure.
                ((ActiveMQConnection)connection).addTransportListener(new TransportListener() {
                    @Override
                    public void onCommand(Object command) {
                    }

                    @Override
                    public void onException(IOException error) {
                        synchronized (this) {
                            setHasExpired(true);
                            // only log if not stopped
                            if (!stopped.get()) {
                                LOG.info("Expiring connection " + connection + " on IOException: " + error.getMessage());
                                // log stacktrace at debug level
                                LOG.debug("Expiring connection " + connection + " on IOException: ", error);
                            }
                        }
                    }

                    @Override
                    public void transportInterupted() {
                    }

                    @Override
                    public void transportResumed() {
                    }
                });

                // make sure that we set the hasFailed flag, in case the transport already failed
                // prior to the addition of our new TransportListener
                setHasExpired(((ActiveMQConnection)connection).isTransportFailed());

                // may want to return an amq EnhancedConnection
                return connection;
            }

            @Override
            protected void unWrap(Connection connection) {
                if (connection != null) {
                    ((ActiveMQConnection)connection).cleanUpTempDestinations();
                }
            }
        };
    }
}