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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.virtualhost;
import java.util.LinkedHashMap;
import java.util.ArrayList;
import java.util.List;
import java.util.Map;
import java.util.UUID;
import org.apache.log4j.Logger;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.exchange.ExchangeRegistry;
import org.apache.qpid.server.model.Queue;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.QueueFactory;
import org.apache.qpid.server.security.QpidSecurityException;
import org.apache.qpid.server.store.AbstractDurableConfiguredObjectRecoverer;
import org.apache.qpid.server.store.UnresolvedDependency;
import org.apache.qpid.server.store.UnresolvedObject;
import org.apache.qpid.server.util.ServerScopedRuntimeException;
public class QueueRecoverer extends AbstractDurableConfiguredObjectRecoverer<AMQQueue>
{
private static final Logger _logger = Logger.getLogger(QueueRecoverer.class);
private final VirtualHost _virtualHost;
private final ExchangeRegistry _exchangeRegistry;
private final QueueFactory _queueFactory;
public QueueRecoverer(final VirtualHost virtualHost,
final ExchangeRegistry exchangeRegistry,
final QueueFactory queueFactory)
{
_virtualHost = virtualHost;
_exchangeRegistry = exchangeRegistry;
_queueFactory = queueFactory;
}
@Override
public String getType()
{
return Queue.class.getSimpleName();
}
@Override
public UnresolvedObject<AMQQueue> createUnresolvedObject(final UUID id,
final String type,
final Map<String, Object> attributes)
{
return new UnresolvedQueue(id, type, attributes);
}
private class UnresolvedQueue implements UnresolvedObject<AMQQueue>
{
private final Map<String, Object> _attributes;
private final UUID _alternateExchangeId;
private final UUID _id;
private AMQQueue _queue;
private List<UnresolvedDependency> _dependencies = new ArrayList<UnresolvedDependency>();
private Exchange _alternateExchange;
public UnresolvedQueue(final UUID id,
final String type,
final Map<String, Object> attributes)
{
_attributes = attributes;
_alternateExchangeId = _attributes.get(Queue.ALTERNATE_EXCHANGE) == null ? null : UUID.fromString((String) _attributes
.get(Queue.ALTERNATE_EXCHANGE));
_id = id;
if (_alternateExchangeId != null)
{
_alternateExchange = _exchangeRegistry.getExchange(_alternateExchangeId);
if(_alternateExchange == null)
{
_dependencies.add(new AlternateExchangeDependency());
}
}
}
@Override
public UnresolvedDependency[] getUnresolvedDependencies()
{
return _dependencies.toArray(new UnresolvedDependency[_dependencies.size()]);
}
@Override
public AMQQueue resolve()
{
String queueName = (String) _attributes.get(Queue.NAME);
String owner = (String) _attributes.get(Queue.OWNER);
boolean exclusive = (Boolean) _attributes.get(Queue.EXCLUSIVE);
Map<String, Object> queueArgumentsMap = new LinkedHashMap<String, Object>(_attributes);
queueArgumentsMap.remove(Queue.NAME);
queueArgumentsMap.remove(Queue.OWNER);
queueArgumentsMap.remove(Queue.EXCLUSIVE);
try
{
_queue = _virtualHost.getQueue(_id);
if(_queue == null)
{
_queue = _virtualHost.getQueue(queueName);
}
if (_queue == null)
{
_queue = _queueFactory.restoreQueue(_id, queueName, owner, false, exclusive,
false, queueArgumentsMap);
}
}
catch (QpidSecurityException e)
{
throw new ServerScopedRuntimeException("Security Exception thrown when recovering. The recovery " +
"thread should not be bound by permissions, this is likely " +
"a programming error.",e);
}
return _queue;
}
private class AlternateExchangeDependency implements UnresolvedDependency
{
@Override
public UUID getId()
{
return _alternateExchangeId;
}
@Override
public String getType()
{
return "Exchange";
}
@Override
public void resolve(final Object dependency)
{
_alternateExchange = (Exchange) dependency;
_dependencies.remove(this);
}
}
}
}
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