org.jboss.netty.example.factorial

Class FactorialClientHandler

java.lang.Object

org.jboss.netty.channel.SimpleChannelUpstreamHandler

org.jboss.netty.example.factorial.FactorialClientHandler

All Implemented Interfaces:

ChannelHandler, ChannelUpstreamHandler

public class FactorialClientHandler
extends SimpleChannelUpstreamHandler

Handler for a client-side channel. This handler maintains stateful information which is specific to a certain channel using member variables. Therefore, an instance of this handler can cover only one channel. You have to create a new handler instance whenever you create a new channel and insert this handler to avoid a race condition.

Nested Class Summary

Nested classes/interfaces inherited from interface org.jboss.netty.channel.ChannelHandler

ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
FactorialClientHandler(int count)

Method Summary

Modifier and Type	Method and Description
void	channelConnected(ChannelHandlerContext ctx, ChannelStateEvent e) Invoked when a Channel is open, bound to a local address, and connected to a remote address.
void	channelInterestChanged(ChannelHandlerContext ctx, ChannelStateEvent e) Invoked when a Channel's interestOps was changed.
void	exceptionCaught(ChannelHandlerContext ctx, ExceptionEvent e) Invoked when an exception was raised by an I/O thread or a ChannelHandler.
BigInteger	getFactorial()
void	handleUpstream(ChannelHandlerContext ctx, ChannelEvent e) Handles the specified upstream event.
void	messageReceived(ChannelHandlerContext ctx, MessageEvent e) Invoked when a message object (e.g: ChannelBuffer) was received from a remote peer.

Methods inherited from class org.jboss.netty.channel.SimpleChannelUpstreamHandler

channelBound, channelClosed, channelDisconnected, channelOpen, channelUnbound, childChannelClosed, childChannelOpen, writeComplete

Methods inherited from class java.lang.Object

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

Constructor Detail

FactorialClientHandler

public FactorialClientHandler(int count)

Method Detail

getFactorial

public BigInteger getFactorial()

handleUpstream

public void handleUpstream(ChannelHandlerContext ctx,
                           ChannelEvent e)
                    throws Exception

Description copied from class: SimpleChannelUpstreamHandler

Handles the specified upstream event. Down-casts the received upstream event into more meaningful sub-type event and calls an appropriate handler method with the down-casted event.

Specified by:

handleUpstream in interface ChannelUpstreamHandler

Overrides:

handleUpstream in class SimpleChannelUpstreamHandler

Parameters:

ctx - the context object for this handler

e - the upstream event to process or intercept

Throws:

Exception

channelConnected

public void channelConnected(ChannelHandlerContext ctx,
                             ChannelStateEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when a Channel is open, bound to a local address, and connected to a remote address.
Be aware that this event is fired from within the Boss-Thread so you should not execute any heavy operation in there as it will block the dispatching to other workers!

Overrides:

channelConnected in class SimpleChannelUpstreamHandler

channelInterestChanged

public void channelInterestChanged(ChannelHandlerContext ctx,
                                   ChannelStateEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when a Channel's interestOps was changed.

Overrides:

channelInterestChanged in class SimpleChannelUpstreamHandler

messageReceived

public void messageReceived(ChannelHandlerContext ctx,
                            MessageEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when a message object (e.g: ChannelBuffer) was received from a remote peer.

Overrides:

messageReceived in class SimpleChannelUpstreamHandler

exceptionCaught

public void exceptionCaught(ChannelHandlerContext ctx,
                            ExceptionEvent e)

Description copied from class: SimpleChannelUpstreamHandler

Invoked when an exception was raised by an I/O thread or a ChannelHandler.

Overrides:

exceptionCaught in class SimpleChannelUpstreamHandler