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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.
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*/
package org.apache.qpid.server.exchange;
import org.apache.log4j.Logger;
import org.apache.qpid.AMQException;
import org.apache.qpid.AMQSecurityException;
import org.apache.qpid.exchange.ExchangeDefaults;
import org.apache.qpid.protocol.AMQConstant;
import org.apache.qpid.server.model.UUIDGenerator;
import org.apache.qpid.server.plugin.ExchangeType;
import org.apache.qpid.server.store.DurableConfigurationStore;
import org.apache.qpid.server.virtualhost.VirtualHost;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.UUID;
import java.util.concurrent.ConcurrentHashMap;
import java.util.concurrent.ConcurrentMap;
public class DefaultExchangeRegistry implements ExchangeRegistry
{
private static final Logger LOGGER = Logger.getLogger(DefaultExchangeRegistry.class);
/**
* Maps from exchange name to exchange instance
*/
private ConcurrentMap<String, Exchange> _exchangeMap = new ConcurrentHashMap<String, Exchange>();
private Exchange _defaultExchange;
private VirtualHost _host;
private final Collection<RegistryChangeListener> _listeners =
Collections.synchronizedCollection(new ArrayList<RegistryChangeListener>());
public DefaultExchangeRegistry(VirtualHost host)
{
_host = host;
}
public void initialise(ExchangeFactory exchangeFactory) throws AMQException
{
//create 'standard' exchanges:
new ExchangeInitialiser().initialise(exchangeFactory, this, getDurableConfigurationStore());
_defaultExchange = new DefaultExchange();
UUID defaultExchangeId =
UUIDGenerator.generateExchangeUUID(ExchangeDefaults.DEFAULT_EXCHANGE_NAME.asString(), _host.getName());
_defaultExchange.initialise(defaultExchangeId, _host, ExchangeDefaults.DEFAULT_EXCHANGE_NAME,false, false);
}
public DurableConfigurationStore getDurableConfigurationStore()
{
return _host.getDurableConfigurationStore();
}
public void registerExchange(Exchange exchange) throws AMQException
{
_exchangeMap.put(exchange.getNameShortString().toString(), exchange);
synchronized (_listeners)
{
for(RegistryChangeListener listener : _listeners)
{
listener.exchangeRegistered(exchange);
}
}
}
public void setDefaultExchange(Exchange exchange)
{
_defaultExchange = exchange;
}
public Exchange getDefaultExchange()
{
return _defaultExchange;
}
public void unregisterExchange(String name, boolean inUse) throws AMQException
{
final Exchange exchange = _exchangeMap.get(name);
if (exchange == null)
{
throw new AMQException(AMQConstant.NOT_FOUND, "Unknown exchange " + name, null);
}
if (!_host.getSecurityManager().authoriseDelete(exchange))
{
throw new AMQSecurityException();
}
// TODO: check inUse argument
Exchange e = _exchangeMap.remove(name);
if (e != null)
{
e.close();
synchronized (_listeners)
{
for(RegistryChangeListener listener : _listeners)
{
listener.exchangeUnregistered(exchange);
}
}
}
else
{
throw new AMQException("Unknown exchange " + name);
}
}
public Collection<Exchange> getExchanges()
{
return new ArrayList<Exchange>(_exchangeMap.values());
}
public void addRegistryChangeListener(RegistryChangeListener listener)
{
_listeners.add(listener);
}
public Exchange getExchange(String name)
{
if ((name == null) || name.length() == 0)
{
return getDefaultExchange();
}
else
{
return _exchangeMap.get(name);
}
}
@Override
public void clearAndUnregisterMbeans()
{
for (final Exchange exchange : getExchanges())
{
//TODO: this is a bit of a hack, what if the listeners aren't aware
//that we are just unregistering the MBean because of HA, and aren't
//actually removing the exchange as such.
synchronized (_listeners)
{
for(RegistryChangeListener listener : _listeners)
{
listener.exchangeUnregistered(exchange);
}
}
}
_exchangeMap.clear();
}
@Override
public synchronized Exchange getExchange(UUID exchangeId)
{
if (exchangeId == null)
{
return getDefaultExchange();
}
else
{
Collection<Exchange> exchanges = _exchangeMap.values();
for (Exchange exchange : exchanges)
{
if (exchange.getId().equals(exchangeId))
{
return exchange;
}
}
return null;
}
}
public boolean isReservedExchangeName(String name)
{
if (name == null || ExchangeDefaults.DEFAULT_EXCHANGE_NAME.asString().equals(name)
|| name.startsWith("amq.") || name.startsWith("qpid."))
{
return true;
}
Collection<ExchangeType<? extends Exchange>> registeredTypes = _host.getExchangeTypes();
for (ExchangeType<? extends Exchange> type : registeredTypes)
{
if (type.getDefaultExchangeName().toString().equals(name))
{
return true;
}
}
return false;
}
}