Package com.illumon.iris.db.tables.remotequery

Class UsageFunction

java.lang.Object

com.illumon.iris.db.tables.remotequery.UsageFunction

public class UsageFunction
extends Object

Constructor Summary

Constructors

Constructor	Description
UsageFunction(String name, long intervalMS)	Constructs a UsageFunction that uses intervalMS as the decay interval in its EMA function, with initial value 0.

Method Summary

Modifier and Type	Method	Description
double	getValue()
boolean	isInitialized()
void	update(double observation, long observationDurationMS)	Updates the value of this function according to an Exponential Moving Average (EMA).

Methods inherited from class java.lang.Object

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

Constructor Details

UsageFunction

public UsageFunction(String name,
 long intervalMS)

Constructs a UsageFunction that uses intervalMS as the decay interval in its EMA function, with initial value 0.

Parameters:

name -

intervalMS -

Method Details

getValue

public double getValue()

Returns:

The last calculated value for this UsageFunction

isInitialized

public boolean isInitialized()

Returns:

The state of this UsageFunction

update

public void update(double observation,
 long observationDurationMS)

Updates the value of this function according to an Exponential Moving Average (EMA).

Parameters:

observation -

observationDurationMS -