org.apache.commons.monitoring.listeners
Class SecondaryMonitor

java.lang.Object
  org.apache.commons.monitoring.impl.monitors.AbstractMonitor
      org.apache.commons.monitoring.listeners.SecondaryMonitor

All Implemented Interfaces:

Detachable, Monitor, Monitor.Listener

public class SecondaryMonitor
extends AbstractMonitor
implements Monitor.Listener, Detachable

A Monitor implementation that maintains a set of secondary StatValues in sync with the primary monitor. Register itself as a monitor listener to get notified on new StatValues and automatically create the required secondary.

When detached, deregister itself as Monitor.Listener and detaches all secondary from the primary StatValues.

Author:

Nicolas De Loof

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.commons.monitoring.Monitor

Monitor.Key, Monitor.Listener, Monitor.Observable

Field Summary

Fields inherited from interface org.apache.commons.monitoring.Monitor

CONCURRENCY, FAILURES, PERFORMANCES

Constructor Summary

SecondaryMonitor(Monitor.Observable monitor)

Method Summary

void	detach() Detach the instance from live monitoring beackbone.
long	getAttachedAt()
long	getDetachedAt()
boolean	isDetached()
void	onStatValueRegistered(StatValue value)

Methods inherited from class org.apache.commons.monitoring.impl.monitors.AbstractMonitor

getCounter, getCounter, getGauge, getGauge, getKey, getRoles, getValue, getValue, getValues, register, reset

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SecondaryMonitor

public SecondaryMonitor(Monitor.Observable monitor)

Method Detail

detach

public void detach()

Description copied from interface: Detachable

Detach the instance from live monitoring beackbone. Any new monitoring event will not affect datas in this component.

Specified by:

detach in interface Detachable

onStatValueRegistered

public void onStatValueRegistered(StatValue value)

Specified by:

onStatValueRegistered in interface Monitor.Listener

isDetached

public boolean isDetached()

Specified by:

isDetached in interface Detachable

getAttachedAt

public long getAttachedAt()

Specified by:

getAttachedAt in interface Detachable

getDetachedAt

public long getDetachedAt()

Specified by:

getDetachedAt in interface Detachable