org.elasticsearch.http.netty4.pipelining

Class HttpPipeliningHandler

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.channel.ChannelDuplexHandler

org.elasticsearch.http.netty4.pipelining.HttpPipeliningHandler

All Implemented Interfaces:

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

public class HttpPipeliningHandler
extends io.netty.channel.ChannelDuplexHandler

Implements HTTP pipelining ordering, ensuring that responses are completely served in the same order as their corresponding requests. NOTE: A side effect of using this handler is that upstream HttpRequest objects will cause the original message event to be effectively transformed into an OrderedUpstreamMessageEvent. Conversely OrderedDownstreamChannelEvent objects are expected to be received for the correlating response objects.

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
HttpPipeliningHandler(int maxEventsHeld)

Method Summary

Modifier and Type	Method and Description
void	channelRead(io.netty.channel.ChannelHandlerContext ctx, java.lang.Object msg)
void	write(io.netty.channel.ChannelHandlerContext ctx, java.lang.Object msg, io.netty.channel.ChannelPromise promise)

Methods inherited from class io.netty.channel.ChannelDuplexHandler

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

Methods inherited from class io.netty.channel.ChannelInboundHandlerAdapter

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

Methods inherited from class io.netty.channel.ChannelHandlerAdapter

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

HttpPipeliningHandler

public HttpPipeliningHandler(int maxEventsHeld)

Parameters:

maxEventsHeld - the maximum number of channel events that will be retained prior to aborting the channel connection. This is required as events cannot queue up indefinitely; we would run out of memory if this was the case.

Method Detail

channelRead

public void channelRead(io.netty.channel.ChannelHandlerContext ctx,
                        java.lang.Object msg)
                 throws java.lang.Exception

Specified by:

channelRead in interface io.netty.channel.ChannelInboundHandler

Overrides:

channelRead in class io.netty.channel.ChannelInboundHandlerAdapter

Throws:

java.lang.Exception

write

public void write(io.netty.channel.ChannelHandlerContext ctx,
                  java.lang.Object msg,
                  io.netty.channel.ChannelPromise promise)
           throws java.lang.Exception

Specified by:

write in interface io.netty.channel.ChannelOutboundHandler

Overrides:

write in class io.netty.channel.ChannelDuplexHandler

Throws:

java.lang.Exception