org.epics.ca.impl.reactor.lf

Class LeaderFollowersHandler

java.lang.Object

org.epics.ca.impl.reactor.lf.LeaderFollowersHandler

All Implemented Interfaces:

java.lang.Runnable, ReactorHandler

public class LeaderFollowersHandler
extends java.lang.Object
implements ReactorHandler, java.lang.Runnable

Decorator pattern to 'decorate' application-specific event processing handler to work with Leader/Followers deisgn pattern. This decorator promotes a new leader thread and disables/enables the handler.

Field Summary

Fields

Modifier and Type	Field and Description
protected ReactorHandler	handler Application-specific event processing handler.
protected Reactor	reactor Reactor to serve.
protected LeaderFollowersThreadPool	threadPool Leader-followers thread pool.

Constructor Summary

Constructors

Constructor and Description
LeaderFollowersHandler(Reactor reactor, ReactorHandler handler, LeaderFollowersThreadPool threadPool) Constructor.

Method Summary

Modifier and Type	Method and Description
void	handleEvent(java.nio.channels.SelectionKey key) Process request of given SelectionKey.
void	run()

Methods inherited from class java.lang.Object

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

Field Detail

reactor

protected final Reactor reactor

Reactor to serve.

handler

protected final ReactorHandler handler

Application-specific event processing handler.

threadPool

protected final LeaderFollowersThreadPool threadPool

Leader-followers thread pool.

Constructor Detail

LeaderFollowersHandler

public LeaderFollowersHandler(Reactor reactor,
                              ReactorHandler handler,
                              LeaderFollowersThreadPool threadPool)

Constructor.

Parameters:

reactor - reactor to handle.

handler - application-specific event processing handler.

threadPool - leader-followers thread pool.

Method Detail

handleEvent

public void handleEvent(java.nio.channels.SelectionKey key)

Description copied from interface: ReactorHandler

Process request of given SelectionKey.

Specified by:

handleEvent in interface ReactorHandler

Parameters:

key - key to be processed.

See Also:

ReactorHandler.handleEvent(java.nio.channels.SelectionKey)

run

public void run()

Specified by:

run in interface java.lang.Runnable

See Also:

Runnable.run()