gov.nist.javax.sip.stack.BlockingQueueDispatchAuditor Maven / Gradle / Ivy
/*
* Conditions Of Use
*
* This software was developed by employees of the National Institute of
* Standards and Technology (NIST), an agency of the Federal Government.
* Pursuant to title 15 Untied States Code Section 105, works of NIST
* employees are not subject to copyright protection in the United States
* and are considered to be in the public domain. As a result, a formal
* license is not needed to use the software.
*
* This software is provided by NIST as a service and is expressly
* provided "AS IS." NIST MAKES NO WARRANTY OF ANY KIND, EXPRESS, IMPLIED
* OR STATUTORY, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTY OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, NON-INFRINGEMENT
* AND DATA ACCURACY. NIST does not warrant or make any representations
* regarding the use of the software or the results thereof, including but
* not limited to the correctness, accuracy, reliability or usefulness of
* the software.
*
* Permission to use this software is contingent upon your acceptance
* of the terms of this agreement
*
* .
*
*/
package gov.nist.javax.sip.stack;
import gov.nist.core.CommonLogger;
import gov.nist.core.LogLevels;
import gov.nist.core.StackLogger;
import java.util.Queue;
import java.util.Timer;
import java.util.TimerTask;
public class BlockingQueueDispatchAuditor extends TimerTask {
private Timer timer = null;
private static int timerThreadCount = 0;
private static StackLogger logger = CommonLogger.getLogger(BlockingQueueDispatchAuditor.class);
private long totalReject = 0;
private boolean started = false;
private Queue queue;
private int timeout = 8000;
public BlockingQueueDispatchAuditor(Queue queue) {
this.queue = queue;
}
public void start(int interval) {
if(started) stop();
started = true;
timer = new Timer("BlockingQueueDispatchAuditor-Timer-" + timerThreadCount++, true);
timer.scheduleAtFixedRate(this, interval, interval);
}
public int getTimeout() {
return timeout;
}
public void setTimeout(int timeout) {
this.timeout = timeout;
}
public void stop() {
try {
timer.cancel();
timer = null;
} catch (Exception e) {
//not important
} finally {
started = false;
}
}
public void run() {
try {
int removed = 0;
synchronized(this.queue) {
QueuedMessageDispatchBase runnable =(QueuedMessageDispatchBase) this.queue.peek();
while(runnable != null) {
QueuedMessageDispatchBase d = (QueuedMessageDispatchBase) runnable;
if(System.currentTimeMillis() - d.getReceptionTime() > timeout) {
queue.poll();
runnable = (QueuedMessageDispatchBase) this.queue.peek();
removed ++;
} else {
runnable = null;
}
}
}
if(removed>0) {
totalReject+=removed;
if(logger != null && logger.isLoggingEnabled(LogLevels.TRACE_WARN))
logger.logWarning("Removed stuck messages=" + removed +
" total rejected=" + totalReject + " stil in queue=" + this.queue.size());
}
} catch (Exception e) {
if(logger != null && logger.isLoggingEnabled(LogLevels.TRACE_WARN)) {
logger.logWarning("Problem reaping old requests. This is not a fatal error." + e);
}
}
}
}