org.apache.hadoop.yarn.service
Class FilterService

java.lang.Object
  org.apache.hadoop.yarn.service.FilterService

All Implemented Interfaces:

Service

public class FilterService
extends Object
implements Service

Nested Class Summary

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

Service.STATE

Constructor Summary

FilterService(Service service)

Method Summary

org.apache.hadoop.conf.Configuration	getConfig() Get the configuration of this service.
String	getName() Get the name of this service.
Service.STATE	getServiceState() Get the current service state
long	getStartTime() Get the service start time
void	init(org.apache.hadoop.conf.Configuration config) Initialize the service.
void	register(ServiceStateChangeListener listener) Register an instance of the service state change events.
void	start() Start the service.
void	stop() Stop the service.
void	unregister(ServiceStateChangeListener listener) Unregister a previously instance of the service state change events.

Methods inherited from class java.lang.Object

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

Constructor Detail

FilterService

public FilterService(Service service)

Method Detail

init

public void init(org.apache.hadoop.conf.Configuration config)

Description copied from interface: Service

Initialize the service. The transition must be from Service.STATE.NOTINITED to Service.STATE.INITED unless the operation failed and an exception was raised.

Specified by:

init in interface Service

Parameters:

config - the configuration of the service

start

public void start()

Description copied from interface: Service

Start the service. The transition should be from Service.STATE.INITED to Service.STATE.STARTED unless the operation failed and an exception was raised.

Specified by:

start in interface Service

stop

public void stop()

Description copied from interface: Service

Stop the service. This operation must be designed to complete regardless of the initial state of the service, including the state of all its internal fields.

Specified by:

stop in interface Service

register

public void register(ServiceStateChangeListener listener)

Description copied from interface: Service

Register an instance of the service state change events.

Specified by:

register in interface Service

Parameters:

listener - a new listener

unregister

public void unregister(ServiceStateChangeListener listener)

Description copied from interface: Service

Unregister a previously instance of the service state change events.

Specified by:

unregister in interface Service

Parameters:

listener - the listener to unregister.

getName

public String getName()

Description copied from interface: Service

Get the name of this service.

Specified by:

getName in interface Service

Returns:

the service name

getConfig

public org.apache.hadoop.conf.Configuration getConfig()

Description copied from interface: Service

Get the configuration of this service. This is normally not a clone and may be manipulated, though there are no guarantees as to what the consequences of such actions may be

Specified by:

getConfig in interface Service

Returns:

the current configuration, unless a specific implentation chooses otherwise.

getServiceState

public Service.STATE getServiceState()

Description copied from interface: Service

Get the current service state

Specified by:

getServiceState in interface Service

Returns:

the state of the service

getStartTime

public long getStartTime()

Description copied from interface: Service

Get the service start time

Specified by:

getStartTime in interface Service

Returns:

the start time of the service. This will be zero if the service has not yet been started.