org.apache.bookkeeper.common.component

Class AbstractLifecycleComponent<ConfT extends ComponentConfiguration>

java.lang.Object

org.apache.bookkeeper.common.component.AbstractComponent<ConfT>

org.apache.bookkeeper.common.component.AbstractLifecycleComponent<ConfT>

All Implemented Interfaces:

java.lang.AutoCloseable, LifecycleComponent

Direct Known Subclasses:

RxSchedulerLifecycleComponent

public abstract class AbstractLifecycleComponent<ConfT extends ComponentConfiguration>
extends AbstractComponent<ConfT>
implements LifecycleComponent

A mix of AbstractComponent and LifecycleComponent.

Field Summary

Fields

Modifier and Type	Field and Description
protected Lifecycle	lifecycle
protected org.apache.bookkeeper.stats.StatsLogger	statsLogger
protected java.lang.Thread.UncaughtExceptionHandler	uncaughtExceptionHandler

Fields inherited from class org.apache.bookkeeper.common.component.AbstractComponent

componentName, conf

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractLifecycleComponent(java.lang.String componentName, ConfT conf, org.apache.bookkeeper.stats.StatsLogger statsLogger)

Method Summary

Modifier and Type	Method and Description
void	addLifecycleListener(LifecycleListener listener)
void	close()
protected abstract void	doClose()
protected abstract void	doStart()
protected abstract void	doStop()
protected org.apache.bookkeeper.stats.StatsLogger	getStatsLogger()
Lifecycle.State	lifecycleState()
void	removeLifecycleListener(LifecycleListener listener)
void	setExceptionHandler(java.lang.Thread.UncaughtExceptionHandler handler) Set the default handler invoked when a lifecycle component abruptly terminates due an uncaught exception.
void	start()
void	stop()

Methods inherited from class org.apache.bookkeeper.common.component.AbstractComponent

getConf, getName

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.bookkeeper.common.component.LifecycleComponent

getName, publishInfo

Field Detail

lifecycle

protected final Lifecycle lifecycle

statsLogger

protected final org.apache.bookkeeper.stats.StatsLogger statsLogger

uncaughtExceptionHandler

protected volatile java.lang.Thread.UncaughtExceptionHandler uncaughtExceptionHandler

Constructor Detail

AbstractLifecycleComponent

protected AbstractLifecycleComponent(java.lang.String componentName,
                                     ConfT conf,
                                     org.apache.bookkeeper.stats.StatsLogger statsLogger)

Method Detail

setExceptionHandler

public void setExceptionHandler(java.lang.Thread.UncaughtExceptionHandler handler)

Description copied from interface: LifecycleComponent

Set the default handler invoked when a lifecycle component abruptly terminates due an uncaught exception.

Specified by:

setExceptionHandler in interface LifecycleComponent

Parameters:

handler - handler invoked when an uncaught exception happens in the lifecycle component.

getStatsLogger

protected org.apache.bookkeeper.stats.StatsLogger getStatsLogger()

lifecycleState

public Lifecycle.State lifecycleState()

Specified by:

lifecycleState in interface LifecycleComponent

addLifecycleListener

public void addLifecycleListener(LifecycleListener listener)

Specified by:

addLifecycleListener in interface LifecycleComponent

removeLifecycleListener

public void removeLifecycleListener(LifecycleListener listener)

Specified by:

removeLifecycleListener in interface LifecycleComponent

start

public void start()

Specified by:

start in interface LifecycleComponent

doStart

protected abstract void doStart()

stop

public void stop()

Specified by:

stop in interface LifecycleComponent

doStop

protected abstract void doStop()

close

public void close()

Specified by:

close in interface java.lang.AutoCloseable

Specified by:

close in interface LifecycleComponent

doClose

protected abstract void doClose()
                         throws java.io.IOException

Throws:

java.io.IOException