Package org.apache.storm.metrics2

Class RateCounter

java.lang.Object

org.apache.storm.metrics2.RateCounter

All Implemented Interfaces:

com.codahale.metrics.Gauge<Double>, com.codahale.metrics.Metric

public class RateCounter
extends Object
implements com.codahale.metrics.Gauge<Double>

A Counter metric that also implements a Gauge to report the average rate of events per second over 1 minute. This class was added as a compromise to using a Meter, which has a much larger performance impact.

Method Summary

Modifier and Type	Method	Description
Double	getValue()	Reports the the average rate of events per second over 1 minute for the metric.
void	inc(long n)

Methods inherited from class java.lang.Object

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

Method Details

getValue

public Double getValue()

Reports the the average rate of events per second over 1 minute for the metric.

Specified by:

getValue in interface com.codahale.metrics.Gauge<Double>

Returns:

the rate

inc

public void inc(long n)