/*
*
* 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.qpid.jndi;
import org.apache.log4j.Logger;
import org.apache.qpid.client.AMQConnectionFactory;
import org.apache.qpid.client.AMQHeadersExchange;
import org.apache.qpid.client.AMQQueue;
import org.apache.qpid.client.AMQTopic;
import org.apache.qpid.exchange.ExchangeDefaults;
import org.apache.qpid.url.AMQBindingURL;
import org.apache.qpid.url.BindingURL;
import org.apache.qpid.url.URLSyntaxException;
import javax.jms.ConnectionFactory;
import javax.jms.Destination;
import javax.jms.Queue;
import javax.jms.Topic;
import javax.naming.Context;
import javax.naming.NamingException;
import javax.naming.spi.InitialContextFactory;
import java.util.Hashtable;
import java.util.Iterator;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
public class PropertiesFileInitialContextFactory implements InitialContextFactory
{
protected final Logger _logger = Logger.getLogger(getClass());
private String CONNECTION_FACTORY_PREFIX = "connectionfactory.";
private String DESTINATION_PREFIX = "destination.";
private String QUEUE_PREFIX = "queue.";
private String TOPIC_PREFIX = "topic.";
public Context getInitialContext(Hashtable environment) throws NamingException
{
Map data = new ConcurrentHashMap();
createConnectionFactories(data, environment);
createDestinations(data, environment);
createQueues(data, environment);
createTopics(data, environment);
return createContext(data, environment);
}
// Implementation methods
//-------------------------------------------------------------------------
protected ReadOnlyContext createContext(Map data, Hashtable environment)
{
return new ReadOnlyContext(environment, data);
}
protected void createConnectionFactories(Map data, Hashtable environment)
{
for (Iterator iter = environment.entrySet().iterator(); iter.hasNext();)
{
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
if (key.startsWith(CONNECTION_FACTORY_PREFIX))
{
String jndiName = key.substring(CONNECTION_FACTORY_PREFIX.length());
ConnectionFactory cf = createFactory(entry.getValue().toString());
if (cf != null)
{
data.put(jndiName, cf);
}
}
}
}
protected void createDestinations(Map data, Hashtable environment)
{
for (Iterator iter = environment.entrySet().iterator(); iter.hasNext();)
{
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
if (key.startsWith(DESTINATION_PREFIX))
{
String jndiName = key.substring(DESTINATION_PREFIX.length());
Destination dest = createDestination(entry.getValue().toString());
if (dest != null)
{
data.put(jndiName, dest);
}
}
}
}
protected void createQueues(Map data, Hashtable environment)
{
for (Iterator iter = environment.entrySet().iterator(); iter.hasNext();)
{
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
if (key.startsWith(QUEUE_PREFIX))
{
String jndiName = key.substring(QUEUE_PREFIX.length());
Queue q = createQueue(entry.getValue().toString());
if (q != null)
{
data.put(jndiName, q);
}
}
}
}
protected void createTopics(Map data, Hashtable environment)
{
for (Iterator iter = environment.entrySet().iterator(); iter.hasNext();)
{
Map.Entry entry = (Map.Entry) iter.next();
String key = entry.getKey().toString();
if (key.startsWith(TOPIC_PREFIX))
{
String jndiName = key.substring(TOPIC_PREFIX.length());
Topic t = createTopic(entry.getValue().toString());
if (t != null)
{
data.put(jndiName, t);
}
}
}
}
/**
* Factory method to create new Connection Factory instances
*/
protected ConnectionFactory createFactory(String url)
{
try
{
return new AMQConnectionFactory(url);
}
catch (URLSyntaxException urlse)
{
_logger.warn("Unable to createFactories:" + urlse);
}
return null;
}
/**
* Factory method to create new Destination instances from an AMQP BindingURL
*/
protected Destination createDestination(String bindingURL)
{
AMQBindingURL binding;
try
{
binding = new AMQBindingURL(bindingURL);
}
catch (URLSyntaxException urlse)
{
_logger.warn("Unable to destination:" + urlse);
return null;
}
if (binding.getExchangeClass().equals(ExchangeDefaults.TOPIC_EXCHANGE_CLASS))
{
return createTopic(binding);
}
else if (binding.getExchangeClass().equals(ExchangeDefaults.DIRECT_EXCHANGE_CLASS))
{
return createQueue(binding);
}
else if (binding.getExchangeClass().equals(ExchangeDefaults.HEADERS_EXCHANGE_CLASS))
{
return createHeaderExchange(binding);
}
_logger.warn("Binding: '" + binding + "' not supported");
return null;
}
/**
* Factory method to create new Queue instances
*/
protected Queue createQueue(Object value)
{
if (value instanceof String)
{
return new AMQQueue((String) value);
}
else if (value instanceof BindingURL)
{
return new AMQQueue((BindingURL) value);
}
return null;
}
/**
* Factory method to create new Topic instances
*/
protected Topic createTopic(Object value)
{
if (value instanceof String)
{
return new AMQTopic((String) value);
}
else if (value instanceof BindingURL)
{
return new AMQTopic((BindingURL) value);
}
return null;
}
/**
* Factory method to create new HeaderExcahnge instances
*/
protected Destination createHeaderExchange(Object value)
{
if (value instanceof String)
{
return new AMQHeadersExchange((String) value);
}
else if (value instanceof BindingURL)
{
return new AMQHeadersExchange((BindingURL) value);
}
return null;
}
// Properties
//-------------------------------------------------------------------------
public String getConnectionPrefix()
{
return CONNECTION_FACTORY_PREFIX;
}
public void setConnectionPrefix(String connectionPrefix)
{
this.CONNECTION_FACTORY_PREFIX = connectionPrefix;
}
public String getDestinationPrefix()
{
return DESTINATION_PREFIX;
}
public void setDestinationPrefix(String destinationPrefix)
{
this.DESTINATION_PREFIX = destinationPrefix;
}
public String getQueuePrefix()
{
return QUEUE_PREFIX;
}
public void setQueuePrefix(String queuePrefix)
{
this.QUEUE_PREFIX = queuePrefix;
}
public String getTopicPrefix()
{
return TOPIC_PREFIX;
}
public void setTopicPrefix(String topicPrefix)
{
this.TOPIC_PREFIX = topicPrefix;
}
}