org.springframework.yarn.integration
Class IntegrationAppmasterService<T>

java.lang.Object
  org.springframework.yarn.support.LifecycleObjectSupport
      org.springframework.yarn.integration.support.IntegrationObjectSupport
          org.springframework.yarn.integration.IntegrationAppmasterService<T>

All Implemented Interfaces:

org.springframework.beans.factory.Aware, org.springframework.beans.factory.BeanFactoryAware, org.springframework.beans.factory.InitializingBean, org.springframework.context.Lifecycle, org.springframework.context.Phased, org.springframework.context.SmartLifecycle, AppmasterService

Direct Known Subclasses:

MindAppmasterService

public abstract class IntegrationAppmasterService<T>
extends IntegrationObjectSupport
implements AppmasterService

Base implementation of AppmasterService using Spring Integration Ip channels as a communication link.

Author:

Janne Valkealahti

Constructor Summary

IntegrationAppmasterService()

Method Summary

protected void	doStart() Subclasses may implement this method with the start behavior.
protected void	doStop() Subclasses may implement this method with the stop behavior.
java.lang.String	getHost() Get a hostname where service is running.
int	getPort() Get a port where service is running.
abstract RpcMessage<T>	handleMessageInternal(RpcMessage<T> message) Implementor need to write this method to process incoming messages.
boolean	hasPort() This method should return true if a service will eventually bind to a port.
void	setMessageChannel(org.springframework.messaging.SubscribableChannel messageChannel) Sets the message channel where messages are dispatched.
void	setSocketSupport(PortExposingTcpSocketSupport socketSupport) Sets the socket support for this service.

Methods inherited from class org.springframework.yarn.integration.support.IntegrationObjectSupport

getConversionService, setConversionService

Methods inherited from class org.springframework.yarn.support.LifecycleObjectSupport

afterPropertiesSet, getBeanFactory, getPhase, getTaskExecutor, getTaskScheduler, getYarnEventPublisher, isAutoStartup, isRunning, onInit, setAutoStartup, setBeanFactory, setPhase, setTaskExecutor, setTaskScheduler, setYarnEventPublisher, start, stop, stop

Methods inherited from class java.lang.Object

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

Constructor Detail

IntegrationAppmasterService

public IntegrationAppmasterService()

Method Detail

doStart

protected void doStart()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this method with the start behavior. This method will be invoked while holding the LifecycleObjectSupport.lifecycleLock.

Overrides:

doStart in class LifecycleObjectSupport

doStop

protected void doStop()

Description copied from class: LifecycleObjectSupport

Subclasses may implement this method with the stop behavior. This method will be invoked while holding the LifecycleObjectSupport.lifecycleLock.

Overrides:

doStop in class LifecycleObjectSupport

getPort

public int getPort()

Description copied from interface: AppmasterService

Get a port where service is running. This method should return port as zero or negative if port is unknown. For example if underlying communication library is using random ports or other methods so that user doesn't need to worry about it.

Specified by:

getPort in interface AppmasterService

Returns:

Service port, -1 if port unknown.

getHost

public java.lang.String getHost()

Description copied from interface: AppmasterService

Get a hostname where service is running. This method should return null if service is unknown.

Specified by:

getHost in interface AppmasterService

Returns:

Hostname of the server or null if unknown.

hasPort

public boolean hasPort()

Description copied from interface: AppmasterService

This method should return true if a service will eventually bind to a port. User can then do a sleep while waiting AppmasterService.getPort() to return the actual port number.

Specified by:

hasPort in interface AppmasterService

Returns:

True if this service will provide a port

handleMessageInternal

public abstract RpcMessage<T> handleMessageInternal(RpcMessage<T> message)

Implementor need to write this method to process incoming messages.

Parameters:

message - the rpc message wrapping a protocol content

Returns:

a reply rpc message

setMessageChannel

public void setMessageChannel(org.springframework.messaging.SubscribableChannel messageChannel)

Sets the message channel where messages are dispatched.

Parameters:

messageChannel - the message channel

setSocketSupport

public void setSocketSupport(PortExposingTcpSocketSupport socketSupport)

Sets the socket support for this service.

Parameters:

socketSupport - the socket support