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* 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
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*
* 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
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package org.apache.qpid.server.virtualhost;
import org.apache.qpid.server.store.ConfigurationRecoveryHandler;
import org.apache.qpid.server.store.MessageStore;
import org.apache.qpid.server.store.MessageStoreRecoveryHandler;
import org.apache.qpid.server.store.StoredMessage;
import org.apache.qpid.server.store.TransactionLogRecoveryHandler;
import org.apache.qpid.server.store.TransactionLog;
import org.apache.qpid.server.store.TransactionLogResource;
import org.apache.qpid.server.queue.AMQQueue;
import org.apache.qpid.server.queue.AMQQueueFactory;
import org.apache.qpid.server.queue.QueueRegistry;
import org.apache.qpid.server.exchange.Exchange;
import org.apache.qpid.server.logging.subjects.MessageStoreLogSubject;
import org.apache.qpid.server.logging.actors.CurrentActor;
import org.apache.qpid.server.logging.messages.TransactionLogMessages;
import org.apache.qpid.server.message.AMQMessage;
import org.apache.qpid.server.message.ServerMessage;
import org.apache.qpid.server.message.MessageTransferMessage;
import org.apache.qpid.server.binding.BindingFactory;
import org.apache.qpid.framing.AMQShortString;
import org.apache.qpid.framing.FieldTable;
import org.apache.qpid.AMQException;
import org.apache.log4j.Logger;
import java.nio.ByteBuffer;
import java.util.List;
import java.util.ArrayList;
import java.util.Map;
import java.util.HashMap;
import java.util.TreeMap;
public class VirtualHostConfigRecoveryHandler implements ConfigurationRecoveryHandler,
ConfigurationRecoveryHandler.QueueRecoveryHandler,
ConfigurationRecoveryHandler.ExchangeRecoveryHandler,
ConfigurationRecoveryHandler.BindingRecoveryHandler,
MessageStoreRecoveryHandler,
MessageStoreRecoveryHandler.StoredMessageRecoveryHandler,
TransactionLogRecoveryHandler,
TransactionLogRecoveryHandler.QueueEntryRecoveryHandler
{
private static final Logger _logger = Logger.getLogger(VirtualHostConfigRecoveryHandler.class);
private final VirtualHost _virtualHost;
private MessageStoreLogSubject _logSubject;
private List<ProcessAction> _actions;
private MessageStore _store;
private TransactionLog _transactionLog;
private final Map<String, Integer> _queueRecoveries = new TreeMap<String, Integer>();
private Map<Long, ServerMessage> _recoveredMessages = new HashMap<Long, ServerMessage>();
private Map<Long, StoredMessage> _unusedMessages = new HashMap<Long, StoredMessage>();
public VirtualHostConfigRecoveryHandler(VirtualHost virtualHost)
{
_virtualHost = virtualHost;
}
public QueueRecoveryHandler begin(MessageStore store)
{
_logSubject = new MessageStoreLogSubject(_virtualHost,store);
_store = store;
CurrentActor.get().message(_logSubject, TransactionLogMessages.RECOVERY_START(null, false));
return this;
}
public void queue(String queueName, String owner, boolean exclusive, FieldTable arguments)
{
try
{
AMQShortString queueNameShortString = new AMQShortString(queueName);
AMQQueue q = _virtualHost.getQueueRegistry().getQueue(queueNameShortString);
if (q == null)
{
q = AMQQueueFactory.createAMQQueueImpl(queueNameShortString, true, owner == null ? null : new AMQShortString(owner), false, exclusive, _virtualHost,
arguments);
_virtualHost.getQueueRegistry().registerQueue(q);
}
CurrentActor.get().message(_logSubject, TransactionLogMessages.RECOVERY_START(queueName, true));
//Record that we have a queue for recovery
_queueRecoveries.put(queueName, 0);
}
catch (AMQException e)
{
// TODO
throw new RuntimeException(e);
}
}
public ExchangeRecoveryHandler completeQueueRecovery()
{
return this;
}
public void exchange(String exchangeName, String type, boolean autoDelete)
{
try
{
Exchange exchange;
AMQShortString exchangeNameSS = new AMQShortString(exchangeName);
exchange = _virtualHost.getExchangeRegistry().getExchange(exchangeNameSS);
if (exchange == null)
{
exchange = _virtualHost.getExchangeFactory().createExchange(exchangeNameSS, new AMQShortString(type), true, autoDelete, 0);
_virtualHost.getExchangeRegistry().registerExchange(exchange);
}
}
catch (AMQException e)
{
// TODO
throw new RuntimeException(e);
}
}
public BindingRecoveryHandler completeExchangeRecovery()
{
return this;
}
public StoredMessageRecoveryHandler begin()
{
// TODO - log begin
return this;
}
public void message(StoredMessage message)
{
ServerMessage serverMessage;
switch(message.getMetaData().getType())
{
case META_DATA_0_8:
serverMessage = new AMQMessage(message);
break;
case META_DATA_0_10:
serverMessage = new MessageTransferMessage(message, null);
break;
default:
throw new RuntimeException("Unknown message type retrieved from store " + message.getMetaData().getClass());
}
//_logger.debug("Recovered message with id " + serverMessage);
_recoveredMessages.put(message.getMessageNumber(), serverMessage);
_unusedMessages.put(message.getMessageNumber(), message);
}
public void completeMessageRecovery()
{
//TODO - log end
//To change body of implemented methods use File | Settings | File Templates.
}
public TransactionLogRecoveryHandler.QueueEntryRecoveryHandler begin(TransactionLog log)
{
_transactionLog = log;
return this;
}
private static final class ProcessAction
{
private final AMQQueue _queue;
private final AMQMessage _message;
public ProcessAction(AMQQueue queue, AMQMessage message)
{
_queue = queue;
_message = message;
}
public void process()
{
try
{
_queue.enqueue(_message);
}
catch(AMQException e)
{
throw new RuntimeException(e);
}
}
}
public void binding(String exchangeName, String queueName, String bindingKey, ByteBuffer buf)
{
_actions = new ArrayList<ProcessAction>();
try
{
Exchange exchange = _virtualHost.getExchangeRegistry().getExchange(exchangeName);
if (exchange == null)
{
_logger.error("Unknown exchange: " + exchangeName + ", cannot bind queue : " + queueName);
return;
}
AMQQueue queue = _virtualHost.getQueueRegistry().getQueue(new AMQShortString(queueName));
if (queue == null)
{
_logger.error("Unknown queue: " + queueName + ", cannot be bound to exchange: " + exchangeName);
}
else
{
FieldTable argumentsFT = null;
if(buf != null)
{
argumentsFT = new FieldTable(org.apache.mina.common.ByteBuffer.wrap(buf),buf.limit());
}
BindingFactory bf = _virtualHost.getBindingFactory();
Map<String, Object> argumentMap = FieldTable.convertToMap(argumentsFT);
if(bf.getBinding(bindingKey, queue, exchange, argumentMap) == null)
{
_logger.info("Restoring binding: (Exchange: " + exchange.getNameShortString() + ", Queue: " + queueName
+ ", Routing Key: " + bindingKey + ", Arguments: " + argumentsFT + ")");
bf.restoreBinding(bindingKey, queue, exchange, argumentMap);
}
}
}
catch (AMQException e)
{
throw new RuntimeException(e);
}
}
public void completeBindingRecovery()
{
//return this;
}
public void complete()
{
}
public void queueEntry(final String queueName, long messageId)
{
AMQShortString queueNameShortString = new AMQShortString(queueName);
AMQQueue queue = _virtualHost.getQueueRegistry().getQueue(queueNameShortString);
try
{
if(queue != null)
{
ServerMessage message = _recoveredMessages.get(messageId);
_unusedMessages.remove(messageId);
if(message != null)
{
if (_logger.isDebugEnabled())
{
_logger.debug("On recovery, delivering " + message.getMessageNumber() + " to " + queue.getNameShortString());
}
Integer count = _queueRecoveries.get(queueName);
if (count == null)
{
count = 0;
}
queue.enqueue(message);
_queueRecoveries.put(queueName, ++count);
}
else
{
_logger.warn("Message id " + messageId + " referenced in log as enqueued in queue " + queue.getNameShortString() + " is unknown, entry will be discarded");
TransactionLog.Transaction txn = _transactionLog.newTransaction();
txn.dequeueMessage(queue, messageId);
txn.commitTranAsync();
}
}
else
{
_logger.warn("Message id " + messageId + " in log references queue " + queueName + " which is not in the configuration, entry will be discarded");
TransactionLog.Transaction txn = _transactionLog.newTransaction();
TransactionLogResource mockQueue =
new TransactionLogResource()
{
public String getResourceName()
{
return queueName;
}
};
txn.dequeueMessage(mockQueue, messageId);
txn.commitTranAsync();
}
}
catch(AMQException e)
{
throw new RuntimeException(e);
}
}
public void completeQueueEntryRecovery()
{
for(StoredMessage m : _unusedMessages.values())
{
_logger.warn("Message id " + m.getMessageNumber() + " in store, but not in any queue - removing....");
m.remove();
}
for(Map.Entry<String,Integer> entry : _queueRecoveries.entrySet())
{
CurrentActor.get().message(_logSubject, TransactionLogMessages.RECOVERED(entry.getValue(), entry.getKey()));
CurrentActor.get().message(_logSubject, TransactionLogMessages.RECOVERY_COMPLETE(entry.getKey(), true));
}
CurrentActor.get().message(_logSubject, TransactionLogMessages.RECOVERY_COMPLETE(null, false));
}
}