org.apache.slider.server.services.utility

Class WebAppService<T extends org.apache.hadoop.yarn.webapp.WebApp>

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.slider.server.services.utility.WebAppService<T>

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.hadoop.service.Service

public class WebAppService<T extends org.apache.hadoop.yarn.webapp.WebApp>
extends org.apache.hadoop.service.AbstractService

Contains a webapp reference and stops it in teardown if non-null

It does not start the application. Access to the field is not synchronized across threads; it is the responsibility of the caller.

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.hadoop.service.Service

org.apache.hadoop.service.Service.STATE

Constructor Summary

Constructors

Constructor and Description
WebAppService(String name)
WebAppService(String name, T app)

Method Summary

Methods

Modifier and Type	Method and Description
T	getWebApp()
protected void	serviceStart()
protected void	serviceStop() Stop operation stops the webapp; sets the reference to null
void	setWebApp(T webApp)

Methods inherited from class org.apache.hadoop.service.AbstractService

close, getBlockers, getConfig, getFailureCause, getFailureState, getLifecycleHistory, getName, getServiceState, getStartTime, init, isInState, noteFailure, putBlocker, registerGlobalListener, registerServiceListener, removeBlocker, serviceInit, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Constructor Detail

WebAppService

public WebAppService(String name)

WebAppService

public WebAppService(String name,
             T app)

Method Detail

getWebApp

public T getWebApp()

setWebApp

public void setWebApp(T webApp)

serviceStart

protected void serviceStart()
                     throws Exception

Overrides:

serviceStart in class org.apache.hadoop.service.AbstractService

Throws:

Exception

serviceStop

protected void serviceStop()
                    throws Exception

Stop operation stops the webapp; sets the reference to null

Overrides:

serviceStop in class org.apache.hadoop.service.AbstractService

Throws:

Exception