| /* |
| * |
| * 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); |
| |
| try |
| { |
| _queue = _virtualHost.getQueue(_id); |
| if(_queue == null) |
| { |
| _queue = _virtualHost.getQueue(queueName); |
| } |
| |
| if (_queue == null) |
| { |
| Map<String, Object> attributes = new LinkedHashMap<String, Object>(_attributes); |
| attributes.put(Queue.ID, _id); |
| _queue = _queueFactory.restoreQueue(attributes); |
| } |
| } |
| 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); |
| } |
| } |
| } |
| } |