com.cosylab.epics.caj.impl.reactor.lf
Class LeaderFollowersHandler

java.lang.Object
  com.cosylab.epics.caj.impl.reactor.lf.LeaderFollowersHandler

All Implemented Interfaces:

ReactorHandler, Runnable

public class LeaderFollowersHandler
extends Object
implements ReactorHandler, 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.

Version:

$id$

Author:

Matej Sekoranja

Field Summary

protected ReactorHandler	handler Application-specific event processing handler.
protected Reactor	reactor Reactor to serve.
protected LeaderFollowersThreadPool	threadPool Leader-followers thread pool.

Constructor Summary

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

Method Summary

void	handleEvent(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 Reactor reactor

Reactor to serve.

handler

protected ReactorHandler handler

Application-specific event processing handler.

threadPool

protected 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(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 Runnable

See Also:

Runnable.run()