org.apache.commons.monitoring.listeners
Class SecondaryRepository

java.lang.Object
  org.apache.commons.monitoring.impl.repositories.AbstractRepository
      org.apache.commons.monitoring.listeners.SecondaryRepository

All Implemented Interfaces:

Detachable, Repository, Repository.Listener

public class SecondaryRepository
extends AbstractRepository
implements Repository.Listener, Detachable

A repository implementation that registers as a Listener to an Observable repository and maintains a set of Monitors in sync with the observed repository.

As a Detachable implementation, the SecondaryRepository can be detached from the observed repository and used to build a report for the observed period.

Author:

Nicolas De Loof

Nested Class Summary

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

Repository.Listener, Repository.Observable

Constructor Summary

SecondaryRepository(Repository.Observable repository)

Method Summary

void	detach() Detach the instance from live monitoring beackbone.
long	getAttachedAt()
long	getDetachedAt()
protected Monitor	getMonitor(Monitor.Key key)
boolean	isDetached()
void	newMonitorInstance(Monitor monitor) A monitor has just been created.
StopWatch	start(Monitor monitor) Start a StopWatch to monitor execution

Methods inherited from class org.apache.commons.monitoring.impl.repositories.AbstractRepository

getCategories, getMonitor, getMonitor, getMonitor, getMonitors, getMonitorsFromCategory, getMonitorsFromSubSystem, getSubSystems, register, reset

Methods inherited from class java.lang.Object

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

Constructor Detail

SecondaryRepository

public SecondaryRepository(Repository.Observable repository)

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

getMonitor

protected Monitor getMonitor(Monitor.Key key)

Overrides:

getMonitor in class AbstractRepository

See Also:

AbstractRepository.getMonitor(org.apache.commons.monitoring.Monitor.Key)

newMonitorInstance

public void newMonitorInstance(Monitor monitor)

Description copied from interface: Repository.Listener

A monitor has just been created. Can be used to add custom StatValues or to register StatValue.Listener for all monitors that declare the same category or subsystem.

Specified by:

newMonitorInstance in interface Repository.Listener

See Also:

Repository.Listener.newMonitorInstance(org.apache.commons.monitoring.Monitor)

start

public StopWatch start(Monitor monitor)

Start a StopWatch to monitor execution

Specified by:

start in interface Repository

Parameters:

monitor - the monitor associated with the process

Returns:

a running StopWatch

See Also:

Repository.start(org.apache.commons.monitoring.Monitor)

getAttachedAt

public long getAttachedAt()

Specified by:

getAttachedAt in interface Detachable

Returns:

When (as a System.currentTimeMillis() time) the SecondaryRepository started to observe the repository

getDetachedAt

public long getDetachedAt()

Specified by:

getDetachedAt in interface Detachable

Returns:

When (as a System.currentTimeMillis() time) the SecondaryRepository stopped observing the repository

isDetached

public boolean isDetached()

Specified by:

isDetached in interface Detachable

See Also:

Detachable.isDetached()