org.apache.hadoop.yarn.server.webproxy

Class WebAppProxyServer

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.hadoop.yarn.server.webproxy.WebAppProxyServer

All Implemented Interfaces:

Closeable, AutoCloseable, Service

public class WebAppProxyServer
extends CompositeService

ProxyServer will sit in between the end user and AppMaster web interfaces.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.hadoop.service.CompositeService

CompositeService.CompositeServiceShutdownHook

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

Service.STATE

Field Summary

Fields

Modifier and Type	Field and Description
static int	SHUTDOWN_HOOK_PRIORITY Priority of the ResourceManager shutdown hook.

Fields inherited from class org.apache.hadoop.service.CompositeService

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Constructor and Description
WebAppProxyServer()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	doSecureLogin(Configuration conf) Log in as the Kerberose principal designated for the proxy
static void	main(String[] args)
protected void	serviceInit(Configuration conf) All initialization code needed by a service.

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

addIfService, addService, getServices, removeService, serviceStart, serviceStop

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, setConfig, start, stop, toString, unregisterGlobalListener, unregisterServiceListener, waitForServiceToStop

Methods inherited from class java.lang.Object

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

Field Detail

SHUTDOWN_HOOK_PRIORITY

public static final int SHUTDOWN_HOOK_PRIORITY

Priority of the ResourceManager shutdown hook.

See Also:

Constant Field Values

Constructor Detail

WebAppProxyServer

public WebAppProxyServer()

Method Detail

serviceInit

protected void serviceInit(Configuration conf)
                    throws Exception

Description copied from class: AbstractService

All initialization code needed by a service. 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.init(Configuration) prevents re-entrancy. The base implementation checks to see if the subclass has created a new configuration instance, and if so, updates the base class value

Overrides:

serviceInit in class CompositeService

Parameters:

conf - configuration

Throws:

Exception - on a failure -these will be caught, possibly wrapped, and wil; trigger a service stop

doSecureLogin

protected void doSecureLogin(Configuration conf)
                      throws IOException

Log in as the Kerberose principal designated for the proxy

Parameters:

conf - the configuration holding this information in it.

Throws:

IOException - on any error.

main

public static void main(String[] args)