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/*
*
* 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.server.configuration;
import org.apache.qpid.url.AMQBindingURL;
import org.apache.qpid.url.URLSyntaxException;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.registry.ApplicationRegistry;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.store.MessageStore;
import org.apache.qpid.AMQException;
import org.apache.log4j.Logger;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.XMLConfiguration;
import java.util.Collection;
public class VirtualHostConfiguration
{
private static final Logger _logger = Logger.getLogger(VirtualHostConfiguration.class);
XMLConfiguration _config;
private static final String XML_VIRTUALHOST = "virtualhost";
private static final String XML_PATH = "path";
private static final String XML_BIND = "bind";
private static final String XML_VIRTUALHOST_PATH = "virtualhost.path";
private static final String XML_VIRTUALHOST_BIND = "virtualhost.bind";
public VirtualHostConfiguration(String configFile) throws ConfigurationException
{
_logger.info("Loading Config file:" + configFile);
_config = new XMLConfiguration(configFile);
if (_config.getProperty(XML_VIRTUALHOST_PATH) == null)
{
throw new ConfigurationException(
"Virtualhost Configuration document does not contain a valid virtualhost.");
}
}
public void performBindings() throws AMQException, ConfigurationException, URLSyntaxException
{
Object prop = _config.getProperty(XML_VIRTUALHOST_PATH);
if (prop instanceof Collection)
{
_logger.debug("Number of VirtualHosts: " + ((Collection) prop).size());
int virtualhosts = ((Collection) prop).size();
for (int vhost = 0; vhost < virtualhosts; vhost++)
{
loadVirtualHost(vhost);
}
}
else
{
loadVirtualHost(-1);
}
}
private void loadVirtualHost(int index) throws AMQException, ConfigurationException, URLSyntaxException
{
String path = XML_VIRTUALHOST;
if (index != -1)
{
path = path + "(" + index + ")";
}
Object prop = _config.getProperty(path + "." + XML_PATH);
if (prop == null)
{
prop = _config.getProperty(path + "." + XML_BIND);
String error = "Virtual Host not defined for binding";
if (prop != null)
{
if (prop instanceof Collection)
{
error += "s";
}
error += ": " + prop;
}
throw new ConfigurationException(error);
}
_logger.info("VirtualHost:'" + prop + "'");
prop = _config.getProperty(path + "." + XML_BIND);
if (prop instanceof Collection)
{
int bindings = ((Collection) prop).size();
_logger.debug("Number of Bindings: " + bindings);
for (int dest = 0; dest < bindings; dest++)
{
loadBinding(path, dest);
}
}
else
{
loadBinding(path, -1);
}
}
private void loadBinding(String rootpath, int index) throws AMQException, ConfigurationException, URLSyntaxException
{
String path = rootpath + "." + XML_BIND;
if (index != -1)
{
path = path + "(" + index + ")";
}
String bindingString = _config.getString(path);
AMQBindingURL binding = new AMQBindingURL(bindingString);
_logger.debug("Loaded Binding:" + binding);
try
{
bind(binding);
}
catch (AMQException amqe)
{
_logger.info("Unable to bind url: " + binding);
throw amqe;
}
}
private void bind(AMQBindingURL binding) throws AMQException, ConfigurationException
{
String queueName = binding.getQueueName();
// This will occur if the URL is a Topic
if (queueName == null)
{
//todo register valid topic
///queueName = binding.getDestinationName();
throw new AMQException("Topics cannot be bound. TODO Register valid topic");
}
//Get references to Broker Registries
QueueRegistry queueRegistry = ApplicationRegistry.getInstance().getQueueRegistry();
MessageStore messageStore = ApplicationRegistry.getInstance().getMessageStore();
ExchangeRegistry exchangeRegistry = ApplicationRegistry.getInstance().getExchangeRegistry();
synchronized (queueRegistry)
{
AMQQueue queue = queueRegistry.getQueue(queueName);
if (queue == null)
{
_logger.info("Queue '" + binding.getQueueName() + "' does not exists. Creating.");
queue = new AMQQueue(queueName,
Boolean.parseBoolean(binding.getOption(AMQBindingURL.OPTION_DURABLE)),
null /* These queues will have no owner */,
false /* Therefore autodelete makes no sence */, queueRegistry);
if (queue.isDurable())
{
messageStore.createQueue(queue);
}
queueRegistry.registerQueue(queue);
}
else
{
_logger.info("Queue '" + binding.getQueueName() + "' already exists not creating.");
}
Exchange defaultExchange = exchangeRegistry.getExchange(binding.getExchangeName());
synchronized (defaultExchange)
{
if (defaultExchange == null)
{
throw new ConfigurationException("Attempt to bind queue to unknown exchange:" + binding);
}
defaultExchange.registerQueue(queue.getName(), queue, null);
if (binding.getRoutingKey() == null || binding.getRoutingKey().equals(""))
{
throw new ConfigurationException("Unknown binding not specified on url:" + binding);
}
queue.bind(binding.getRoutingKey(), defaultExchange);
}
_logger.info("Queue '" + queue.getName() + "' bound to exchange:" + binding.getExchangeName() + " RK:'" + binding.getRoutingKey() + "'");
}
}
}
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