org.rhq.metrics.clients.ptrans

Class MetricBatcher

java.lang.Object

io.netty.channel.ChannelHandlerAdapter

io.netty.channel.ChannelInboundHandlerAdapter

io.netty.handler.codec.MessageToMessageDecoder<SingleMetric>

org.rhq.metrics.clients.ptrans.MetricBatcher

All Implemented Interfaces:

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

public class MetricBatcher
extends io.netty.handler.codec.MessageToMessageDecoder<SingleMetric>

Batch several individual SingleMetric objects in a batch of THRESHOLD items to reduce backend communication overhead. TODO how can we detect that Netty is going down and first send the last batch?

Author:

Heiko W. Rupp

Nested Class Summary

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

io.netty.channel.ChannelHandler.Sharable

Constructor Summary

Constructors

Constructor and Description
MetricBatcher(String subKey)

Method Summary

Methods

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

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, 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

handlerAdded, handlerRemoved

Constructor Detail

MetricBatcher

public MetricBatcher(String subKey)

Method Detail

decode

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

Specified by:

decode in class io.netty.handler.codec.MessageToMessageDecoder<SingleMetric>

Throws:

Exception