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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;
import org.apache.qpid.AMQException;
import org.apache.qpid.server.logging.LogActor;
import org.apache.qpid.server.logging.LogMessage;
import org.apache.qpid.server.logging.LogSubject;
import org.apache.qpid.server.logging.actors.CurrentActor;
import org.apache.qpid.server.logging.messages.ChannelMessages;
import org.apache.qpid.server.txn.ServerTransaction;
public class TransactionTimeoutHelper
{
private static final String OPEN_TRANSACTION_TIMEOUT_ERROR = "Open transaction timed out";
private static final String IDLE_TRANSACTION_TIMEOUT_ERROR = "Idle transaction timed out";
private final LogSubject _logSubject;
private final CloseAction _closeAction;
public TransactionTimeoutHelper(final LogSubject logSubject, final CloseAction closeAction)
{
_logSubject = logSubject;
_closeAction = closeAction;
}
public void checkIdleOrOpenTimes(ServerTransaction transaction, long openWarn, long openClose, long idleWarn, long idleClose) throws AMQException
{
if (transaction.isTransactional())
{
final long transactionUpdateTime = transaction.getTransactionUpdateTime();
if(transactionUpdateTime > 0)
{
long idleTime = System.currentTimeMillis() - transactionUpdateTime;
boolean closed = logAndCloseIfNecessary(idleTime, idleWarn, idleClose, ChannelMessages.IDLE_TXN(idleTime), IDLE_TRANSACTION_TIMEOUT_ERROR);
if (closed)
{
return; // no point proceeding to check the open time
}
}
final long transactionStartTime = transaction.getTransactionStartTime();
if(transactionStartTime > 0)
{
long openTime = System.currentTimeMillis() - transactionStartTime;
logAndCloseIfNecessary(openTime, openWarn, openClose, ChannelMessages.OPEN_TXN(openTime), OPEN_TRANSACTION_TIMEOUT_ERROR);
}
}
}
/**
* @return true iff closeTimeout was exceeded
*/
private boolean logAndCloseIfNecessary(final long timeSoFar,
final long warnTimeout, final long closeTimeout,
final LogMessage warnMessage, final String closeMessage) throws AMQException
{
if (isTimedOut(timeSoFar, warnTimeout))
{
LogActor logActor = CurrentActor.get();
logActor.message(_logSubject, warnMessage);
}
if(isTimedOut(timeSoFar, closeTimeout))
{
_closeAction.doTimeoutAction(closeMessage);
return true;
}
else
{
return false;
}
}
private boolean isTimedOut(long timeSoFar, long timeout)
{
return timeout > 0L && timeSoFar > timeout;
}
public interface CloseAction
{
void doTimeoutAction(String reason) throws AMQException;
}
}
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