org.thales.punch.netty.impl

Class MonitoredStringEncoder

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelOutboundHandlerAdapter

io.netty.handler.codec.MessageToMessageEncoder<CharSequence>

org.thales.punch.netty.impl.MonitoredStringEncoder

All Implemented Interfaces:

io.netty.channel.ChannelHandler, io.netty.channel.ChannelOutboundHandler

@ChannelHandler.Sharable
public class MonitoredStringEncoder
extends io.netty.handler.codec.MessageToMessageEncoder<CharSequence>

Encodes the requested String into a ByteBuf. A typical setup for a text-based line protocol in a TCP/IP socket would be:

 ChannelPipeline pipeline = ...;

 // Decoders
 pipeline.addLast("frameDecoder", new LineBasedFrameDecoder(80));
 pipeline.addLast("stringDecoder", new StringDecoder(CharsetUtil.UTF_8));

 // Encoder
 pipeline.addLast("stringEncoder", new StringEncoder(CharsetUtil.UTF_8));
 

and then you can use a String instead of a ByteBuf as a message:

 void channelRead(ChannelHandlerContext ctx, String msg) {
     ch.write("Did you say '" + msg + "'?\n");
 }
 

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
MonitoredStringEncoder(Charset charset) Creates a new instance with the specified character set.
MonitoredStringEncoder(com.codahale.metrics.Counter encodedBytesSent) Creates a new instance with the current system character set.

Method Summary

Modifier and Type	Method and Description
protected void	encode(io.netty.channel.ChannelHandlerContext ctx, CharSequence msg, List<Object> out)

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

acceptOutboundMessage, write

Methods inherited from class io.netty.channel.ChannelOutboundHandlerAdapter

bind, close, connect, deregister, disconnect, flush, read

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

ensureNotSharable, exceptionCaught, handlerAdded, handlerRemoved, isSharable

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

Constructor Detail

MonitoredStringEncoder

public MonitoredStringEncoder(com.codahale.metrics.Counter encodedBytesSent)

Creates a new instance with the current system character set.

Parameters:

encodedBytesSent -

MonitoredStringEncoder

public MonitoredStringEncoder(Charset charset)

Creates a new instance with the specified character set.

Parameters:

charset - the charset to use

Method Detail

encode

protected void encode(io.netty.channel.ChannelHandlerContext ctx,
                      CharSequence msg,
                      List<Object> out)
               throws Exception

Specified by:

encode in class io.netty.handler.codec.MessageToMessageEncoder<CharSequence>

Throws:

Exception