org.apache.hadoop.yarn.server.nodemanager.webapp

Class WebServer

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.yarn.server.nodemanager.webapp.WebServer

All Implemented Interfaces:

Closeable, AutoCloseable, Service

public class WebServer
extends AbstractService

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	WebServer.NMWebApp

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

Service.STATE

Constructor Summary

Constructors

Constructor and Description
WebServer(Context nmContext, ResourceView resourceView, ApplicationACLsManager aclsManager, LocalDirsHandlerService dirsHandler)

Method Summary

Methods

Modifier and Type	Method and Description
int	getPort()
protected void	serviceStart() Actions called during the INITED to STARTED transition.
protected void	serviceStop() Actions called during the transition to the STOPPED state.

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

WebServer

public WebServer(Context nmContext,
         ResourceView resourceView,
         ApplicationACLsManager aclsManager,
         LocalDirsHandlerService dirsHandler)

Method Detail

serviceStart

protected void serviceStart()
                     throws Exception

Description copied from class: AbstractService

Actions called during the INITED to STARTED transition. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.start() prevents re-entrancy.

Overrides:

serviceStart in class AbstractService

Throws:

Exception - if needed -these will be caught, wrapped, and trigger a service stop

getPort

public int getPort()

serviceStop

protected void serviceStop()
                    throws Exception

Description copied from class: AbstractService

Actions called during the transition to the STOPPED state. This method will only ever be called once during the lifecycle of a specific service instance. Implementations do not need to be synchronized as the logic in AbstractService.stop() prevents re-entrancy. Implementations MUST write this to be robust against failures, including checks for null references -and for the first failure to not stop other attempts to shut down parts of the service.

Overrides:

serviceStop in class AbstractService

Throws:

Exception - if needed -these will be caught and logged.