org.apache.storm.metric.api

Class MultiReducedMetric

java.lang.Object

org.apache.storm.metric.api.MultiReducedMetric

All Implemented Interfaces:

IMetric

public class MultiReducedMetric
extends Object
implements IMetric

Constructor Summary

Constructors

Constructor and Description
MultiReducedMetric(IReducer reducer)

Method Summary

Modifier and Type	Method and Description
Map<String,Object>	getValueAndReset() Get value and reset.
ReducedMetric	scope(String key)

Methods inherited from class java.lang.Object

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

Constructor Detail

MultiReducedMetric

public MultiReducedMetric(IReducer reducer)

Method Detail

scope

public ReducedMetric scope(String key)

getValueAndReset

public Map<String,Object> getValueAndReset()

Description copied from interface: IMetric

Get value and reset.

Specified by:

getValueAndReset in interface IMetric

Returns:

an object that will be sent sent to IMetricsConsumer#handleDataPoints(org.apache.storm.metric.api.IMetricsConsumer .TaskInfo, java.util.Collection). If null is returned nothing will be sent. If this value can be reset, like with a counter, a side effect of calling this should be that the value is reset.