Hi.
I have been looking at using the WorkManager API to execute HTTP requests
asynchronously. The hand-off and everything works like a champ, but now I am
interested in checking the queue size of the WorkManager. If the queue size
is bigger than a certain limit I want to fail fast rather than to pile up
request on the thread pool.
So. Basically I'm getting my WorkManager like this:
CommonWorkManager workManager =
(CommonWorkManager)WorkManagerFactory.getWorkManager(threadpool);
But when I try to access any statistical methods, like this:
long queueSize = workManager.getWaitQueueength();
I get NullPointers.
I have set monitoring service for 'Thread Pool' in glassfish to HIGH. I can
see the statistics in the glassfish admin interface and through JMX.
I have tried to set the monitoring flag directly in my code like this:
workManager.setMonitoringEnabled(true);
That fixes the NullPointers, but now I get zeros only. I am suspecting this
may be incorrect usage, but anyway. I see the stats increasing (queue-size
etc) when applying load, but only in the admin & JMX, never in my
application.
So, my question is: Does anyone know how to got the queue size of a
WorkManager in Glassfish programmatically?
It seems like such a waste to have to go through JMX just to get the size of
the underlying queue in the thread pool.
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