io.nadron.handlers.netty

Class TextWebsocketDecoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<io.netty.handler.codec.http.websocketx.TextWebSocketFrame>

io.nadron.handlers.netty.TextWebsocketDecoder

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelInboundHandler

@ChannelHandler.Sharable
public class TextWebsocketDecoder
extends io.netty.handler.codec.MessageToMessageDecoder<io.netty.handler.codec.http.websocketx.TextWebSocketFrame>

This class will convert an incoming TextWebSocketFrame to an Event. The incoming data is expected to be a JSon string representation of an Event object. This class uses ObjectMapper to do the decoding to DefaultEvent. If the incoming event is of type Events.NETWORK_MESSAGE then it will be converted to Events.SESSION_MESSAGE.

Author:

Abraham Menacherry

Nested Class Summary

Nested classes/interfaces inherited from interface io.netty.channel.ChannelHandler

io.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
private io.netty.util.AttributeKey<Class<? extends Event>>	eventClass This will be put into the ChannelHandlerContext the first time attr method is invoed on it.
private org.codehaus.jackson.map.ObjectMapper	jackson

Constructor Summary

Constructors

Constructor and Description
TextWebsocketDecoder()

Method Summary

Methods

Modifier and Type	Method and Description
protected void	decode(io.netty.channel.ChannelHandlerContext ctx, io.netty.handler.codec.http.websocketx.TextWebSocketFrame frame, List<Object> out)
org.codehaus.jackson.map.ObjectMapper	getJackson()
void	setJackson(org.codehaus.jackson.map.ObjectMapper jackson)

Methods inherited from class io.netty.handler.codec.MessageToMessageDecoder

acceptInboundMessage, channelRead

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

channelActive, channelInactive, channelReadComplete, channelRegistered, channelUnregistered, channelWritabilityChanged, userEventTriggered

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

exceptionCaught, handlerAdded, handlerRemoved

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.netty.channel.ChannelHandler

exceptionCaught, handlerAdded, handlerRemoved

Field Detail

jackson

private org.codehaus.jackson.map.ObjectMapper jackson

eventClass

private final io.netty.util.AttributeKey<Class<? extends Event>> eventClass

This will be put into the ChannelHandlerContext the first time attr method is invoed on it. The get is also a set.

Constructor Detail

TextWebsocketDecoder

public TextWebsocketDecoder()

Method Detail

decode

protected void decode(io.netty.channel.ChannelHandlerContext ctx,
          io.netty.handler.codec.http.websocketx.TextWebSocketFrame frame,
          List<Object> out)
               throws Exception

Specified by:

decode in class io.netty.handler.codec.MessageToMessageDecoder<io.netty.handler.codec.http.websocketx.TextWebSocketFrame>

Throws:

Exception

getJackson

public org.codehaus.jackson.map.ObjectMapper getJackson()

setJackson

public void setJackson(org.codehaus.jackson.map.ObjectMapper jackson)