Package org.apache.hadoop.registry.server.dns

Class RegistryDNSServer

java.lang.Object

org.apache.hadoop.service.AbstractService

org.apache.hadoop.service.CompositeService

org.apache.hadoop.registry.server.dns.RegistryDNSServer

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.hadoop.service.Service

public class RegistryDNSServer
extends org.apache.hadoop.service.CompositeService

A server/service that starts and manages the lifecycle of a DNS registry instance.

Nested Class Summary

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

org.apache.hadoop.service.CompositeService.CompositeServiceShutdownHook

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

org.apache.hadoop.service.Service.STATE

Field Summary

Fields

Modifier and Type	Field	Description
static int	SHUTDOWN_HOOK_PRIORITY

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

STOP_ONLY_STARTED_SERVICES

Constructor Summary

Constructors

Constructor	Description
RegistryDNSServer(java.lang.String name, RegistryDNS registryDNS)	Creates the DNS server.

Method Summary

Modifier and Type	Method	Description
static void	main(java.lang.String[] args)	Lanches the server instance.
protected void	serviceInit(org.apache.hadoop.conf.Configuration conf)	Initializes the DNS server.
protected void	serviceStart()	Starts the server.

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

addIfService, addService, getServices, removeService, 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

See Also:

Constant Field Values

Constructor Detail

RegistryDNSServer

public RegistryDNSServer(java.lang.String name,
                         RegistryDNS registryDNS)

Creates the DNS server.

Parameters:

name - the server name.

registryDNS - the registry DNS instance.

Method Detail

serviceInit

protected void serviceInit(org.apache.hadoop.conf.Configuration conf)
                    throws java.lang.Exception

Initializes the DNS server.

Overrides:

serviceInit in class org.apache.hadoop.service.CompositeService

Parameters:

conf - the hadoop configuration instance.

Throws:

java.lang.Exception - if service initialization fails.

serviceStart

protected void serviceStart()
                     throws java.lang.Exception

Starts the server.

Overrides:

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

Throws:

java.lang.Exception - if service start fails.

main

public static void main(java.lang.String[] args)
                 throws java.io.IOException

Lanches the server instance.

Parameters:

args - the command line args.

Throws:

java.io.IOException - if command line options can't be parsed