/**
* NOTE: This copyright does *not* cover user programs that use HQ
* program services by normal system calls through the application
* program interfaces provided as part of the Hyperic Plug-in Development
* Kit or the Hyperic Client Development Kit - this is merely considered
* normal use of the program, and does *not* fall under the heading of
* "derived work".
*
* Copyright (C) [2004-2011], VMware, Inc.
* This file is part of HQ.
*
* HQ is free software; you can redistribute it and/or modify
* it under the terms version 2 of the GNU General Public License as
* published by the Free Software Foundation. This program is distributed
* in the hope that it will be useful, but WITHOUT ANY WARRANTY; without
* even the implied warranty of MERCHANTABILITY or FITNESS FOR A
* PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA.
*/
package org.hyperic.hq.common.shared;
import java.sql.BatchUpdateException;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.StaleStateException;
import org.hibernate.exception.GenericJDBCException;
import org.springframework.orm.hibernate3.HibernateOptimisticLockingFailureException;
import org.springframework.stereotype.Component;
@Component
public class TransactionRetry {
private static final Log log = LogFactory.getLog(TransactionRetry.class);
/**
* Utility method for running transactions that will retry in case of a
* {@link HibernateOptimisticLockingFailureException}.
* This method should be run from outside a transaction context going into a transactional
* context or else it is pretty useless
* @param runner - {@link Runner} will execute runner.run()
* @param maxRetries - max number of retries when
* {@link HibernateOptimisticLockingFailureException} occurs
* @param sleepTime - sleepTime in ms between retries
*/
public void runTransaction(Runnable runner, int maxRetries, long sleepTime) {
RuntimeException ex = null;
int tries = 0;
while (tries++ < maxRetries) {
try {
log.debug("running " + runner + " for try number " + tries);
runner.run();
ex = null;
break;
} catch (GenericJDBCException e) {
Throwable cause = e.getCause();
if (cause != null && cause instanceof BatchUpdateException) {
ex = e;
if (tries < maxRetries) {
log.warn("retrying operation thread=" + Thread.currentThread().getName()+
", tries=" + tries + " error: " + e);
}
log.debug(e,e);
} else {
throw e;
}
} catch (StaleStateException e) {
ex = e;
if (tries < maxRetries) {
log.warn("retrying operation thread=" + Thread.currentThread().getName()+
", tries=" + tries + " error: " + e);
}
log.debug(e, e);
} catch (HibernateOptimisticLockingFailureException e) {
ex = e;
if (tries < maxRetries) {
log.warn("retrying operation thread=" + Thread.currentThread().getName()+
", tries=" + tries + " error: " + e);
}
log.debug(e, e);
}
try {
if (sleepTime > 0) {
Thread.sleep(sleepTime);
}
} catch (InterruptedException e) {
log.debug(e,e);
}
}
if (ex != null) {
throw ex;
}
}
}