org.elasticsearch.http.netty.pipelining

Class HttpPipeliningHandler

java.lang.Object

org.jboss.netty.channel.SimpleChannelHandler

org.elasticsearch.http.netty.pipelining.HttpPipeliningHandler

All Implemented Interfaces:

org.jboss.netty.channel.ChannelDownstreamHandler, org.jboss.netty.channel.ChannelHandler, org.jboss.netty.channel.ChannelUpstreamHandler

public class HttpPipeliningHandler
extends org.jboss.netty.channel.SimpleChannelHandler

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.

Author:

Christopher Hunt

Nested Class Summary

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

org.jboss.netty.channel.ChannelHandler.Sharable

Field Summary

Fields

Modifier and Type	Field and Description
static int	INITIAL_EVENTS_HELD

Constructor Summary

Constructors

Constructor and Description
HttpPipeliningHandler(int maxEventsHeld)

Method Summary

Modifier and Type	Method and Description
int	getMaxEventsHeld()
void	handleDownstream(org.jboss.netty.channel.ChannelHandlerContext ctx, org.jboss.netty.channel.ChannelEvent e)
void	messageReceived(org.jboss.netty.channel.ChannelHandlerContext ctx, org.jboss.netty.channel.MessageEvent e)

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

bindRequested, channelBound, channelClosed, channelConnected, channelDisconnected, channelInterestChanged, channelOpen, channelUnbound, childChannelClosed, childChannelOpen, closeRequested, connectRequested, disconnectRequested, exceptionCaught, handleUpstream, setInterestOpsRequested, unbindRequested, writeComplete, writeRequested

Methods inherited from class java.lang.Object

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

Field Detail

INITIAL_EVENTS_HELD

public static final int INITIAL_EVENTS_HELD

See Also:

Constant Field Values

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

getMaxEventsHeld

public int getMaxEventsHeld()

messageReceived

public void messageReceived(org.jboss.netty.channel.ChannelHandlerContext ctx,
                            org.jboss.netty.channel.MessageEvent e)

Overrides:

messageReceived in class org.jboss.netty.channel.SimpleChannelHandler

handleDownstream

public void handleDownstream(org.jboss.netty.channel.ChannelHandlerContext ctx,
                             org.jboss.netty.channel.ChannelEvent e)
                      throws Exception

Specified by:

handleDownstream in interface org.jboss.netty.channel.ChannelDownstreamHandler

Overrides:

handleDownstream in class org.jboss.netty.channel.SimpleChannelHandler

Throws:

Exception