alma.acs.monitoring.blobber

Interface BlobberWatchDog

public interface BlobberWatchDog

The watchdog gets used by the DAO objects provided in BlobberPlugin#createMonitorDAOs() and can also be used by the ACS layers of the blobber. That's why we define it here.

It provides JMX data about the queues and other information.

Method Summary

Modifier and Type	Method and Description
void	addQueueToWatch(java.util.Collection<ComponentData> queue, java.lang.String queueName, int maxQueueSize) Adds a queue that should be watched by this watch dog.
long	getQueueSize(java.lang.String queueName) Returns the size of the queue with the given name.
void	removeQueueToWatch(java.lang.String queueName) Removes a queue that should no longer be watched.

Method Detail

addQueueToWatch

void addQueueToWatch(java.util.Collection<ComponentData> queue,
                     java.lang.String queueName,
                     int maxQueueSize)

Adds a queue that should be watched by this watch dog. For the watchdog purposes, we don't need the specific queue methods, so that any Collection can be monitored; however, the name "queue" sounds better also here.

Parameters:

queue - The collection / queue to be monitored.

queueName - A name for the queue, used to select a queue and for reporting.

maxQueueSize - The maximum possible or allowed queue size, used to evaluate how full the queue is.

removeQueueToWatch

void removeQueueToWatch(java.lang.String queueName)

Removes a queue that should no longer be watched.

Parameters:

queueName -

getQueueSize

long getQueueSize(java.lang.String queueName)

Returns the size of the queue with the given name.

Parameters:

queueName - Name of the queue.

Returns:

size, as in number of entries.