/**
* 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) [2009-2010], 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.escalation.server.session;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hyperic.hq.context.Bootstrap;
import org.hyperic.hq.stats.ConcurrentStatsCollector;
import org.springframework.dao.OptimisticLockingFailureException;
/**
* This class actually performs the execution of a given segment of an
* escalation. These are queued up and run by the executor thread pool.
*/
public class EscalationRunner implements Runnable {
private Integer stateId;
private EscalationRuntime escalationRuntime = Bootstrap.getBean(EscalationRuntime.class);
private ConcurrentStatsCollector concurrentStatsCollector = Bootstrap.getBean(ConcurrentStatsCollector.class);
private final Log log = LogFactory.getLog(EscalationRunner.class);
public EscalationRunner(Integer stateId) {
this.stateId = stateId;
}
public void run() {
int maxRetries = 3;
for (int i=0; i<maxRetries; i++) {
try {
final boolean debug = log.isDebugEnabled();
if (debug) log.debug("Running escalation state [" + stateId + "]");
final long start = System.currentTimeMillis();
escalationRuntime.executeState(stateId);
final long end = System.currentTimeMillis();
concurrentStatsCollector.addStat((end-start), ConcurrentStatsCollector.ESCALATION_EXECUTE_STATE_TIME);
break;
}catch(OptimisticLockingFailureException e) {
if ((i+1) < maxRetries) {
String times = (maxRetries - i == 1) ? "time" : "times";
log.warn("Warning, exception occurred while running escalation. will retry "
+ (maxRetries - (i+1)) + " more " + times + ". errorMsg: " + e);
continue;
}
log.error("Exception occurred, runEscalation() will not be retried",e);
break;
} catch(Throwable t) {
log.error("Exception occurred, runEscalation() will not be retried",t);
break;
}
}
}
}