org.apache.hadoop.gateway.ha.provider.impl

Class DefaultHaProvider

java.lang.Object

org.apache.hadoop.gateway.ha.provider.impl.DefaultHaProvider

All Implemented Interfaces:

HaProvider

public class DefaultHaProvider
extends Object
implements HaProvider

Constructor Summary

Constructors

Constructor and Description
DefaultHaProvider(HaDescriptor descriptor)

Method Summary

Methods

Modifier and Type	Method and Description
void	addHaService(String serviceName, List<String> urls) Add a service name (role) as a HA service with the URLs that it is configured for
String	getActiveURL(String serviceName) Returns the current URL that is known to be active for the service
HaDescriptor	getHaDescriptor()
boolean	isHaEnabled(String serviceName) Returns whether the service is enabled for HA
void	markFailedURL(String serviceName, String url) Mark the URL for the service as one that has failed.

Methods inherited from class java.lang.Object

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

Constructor Detail

DefaultHaProvider

public DefaultHaProvider(HaDescriptor descriptor)

Method Detail

getHaDescriptor

public HaDescriptor getHaDescriptor()

Specified by:

getHaDescriptor in interface HaProvider

addHaService

public void addHaService(String serviceName,
                List<String> urls)

Description copied from interface: HaProvider

Add a service name (role) as a HA service with the URLs that it is configured for

Specified by:

addHaService in interface HaProvider

Parameters:

serviceName - the name of the service

urls - the list of urls that can be used for that service

isHaEnabled

public boolean isHaEnabled(String serviceName)

Description copied from interface: HaProvider

Returns whether the service is enabled for HA

Specified by:

isHaEnabled in interface HaProvider

Parameters:

serviceName - the name of the service

Returns:

true if the service is enabled; false otherwise

getActiveURL

public String getActiveURL(String serviceName)

Description copied from interface: HaProvider

Returns the current URL that is known to be active for the service

Specified by:

getActiveURL in interface HaProvider

Parameters:

serviceName - the name of the service

Returns:

the URL as a string or null if the service name is not found

markFailedURL

public void markFailedURL(String serviceName,
                 String url)

Description copied from interface: HaProvider

Mark the URL for the service as one that has failed. This method puts changes the active URL to the next available URL for the service.

Specified by:

markFailedURL in interface HaProvider

Parameters:

serviceName - the name of the service

url - the URL that has failed in some way