akka.cluster
Class Metric

java.lang.Object
  akka.cluster.Metric

All Implemented Interfaces:

java.io.Serializable, scala.Equals, scala.Product

public class Metric
extends java.lang.Object
implements scala.Product, scala.Serializable

Metrics key/value.

Equality of Metric is based on its name.

See Also:

Serialized Form

Method Summary

scala.Option<akka.cluster.EWMA>	average()
scala.util.Either<java.lang.Object,java.lang.Object>	convertNumber(java.lang.Object from) May involve rounding or truncation.
static scala.Option<Metric>	create(java.lang.String name, java.lang.Number value, scala.Option<java.lang.Object> decayFactor) Creates a new Metric instance if the value is valid, otherwise None is returned.
static scala.Option<Metric>	create(java.lang.String name, scala.util.Try<java.lang.Number> value, scala.Option<java.lang.Object> decayFactor) Creates a new Metric instance if the Try is successful and the value is valid, otherwise None is returned.
boolean	defined(java.lang.Number value) An defined value is neither negative nor NaN/Infinite: JMX system load average and max heap can be 'undefined' for certain OS, in which case a -1 is returned SIGAR combined CPU can occasionally return a NaN or Infinite (known bug)
boolean	equals(java.lang.Object obj)
int	hashCode()
boolean	isSmooth()
java.lang.String	name()
boolean	sameAs(Metric that) Returns true if that is tracking the same metric as this.
double	smoothValue() The numerical value of the average, if defined, otherwise the latest value
java.lang.Number	value()

Methods inherited from class java.lang.Object

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

Methods inherited from interface scala.Product

productArity, productElement, productIterator, productPrefix

Methods inherited from interface scala.Equals

canEqual

Method Detail

create

public static scala.Option<Metric> create(java.lang.String name,
                                          java.lang.Number value,
                                          scala.Option<java.lang.Object> decayFactor)

Creates a new Metric instance if the value is valid, otherwise None is returned. Invalid numeric values are negative and NaN/Infinite.

create

public static scala.Option<Metric> create(java.lang.String name,
                                          scala.util.Try<java.lang.Number> value,
                                          scala.Option<java.lang.Object> decayFactor)

Creates a new Metric instance if the Try is successful and the value is valid, otherwise None is returned. Invalid numeric values are negative and NaN/Infinite.

name

public java.lang.String name()

value

public java.lang.Number value()

average

public scala.Option<akka.cluster.EWMA> average()

smoothValue

public double smoothValue()

The numerical value of the average, if defined, otherwise the latest value

isSmooth

public boolean isSmooth()

Returns:

true if this value is smoothed

sameAs

public boolean sameAs(Metric that)

Returns true if that is tracking the same metric as this.

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Specified by:

equals in interface scala.Equals

Overrides:

equals in class java.lang.Object

defined

public boolean defined(java.lang.Number value)

An defined value is neither negative nor NaN/Infinite:

• JMX system load average and max heap can be 'undefined' for certain OS, in which case a -1 is returned
• SIGAR combined CPU can occasionally return a NaN or Infinite (known bug)

convertNumber

public scala.util.Either<java.lang.Object,java.lang.Object> convertNumber(java.lang.Object from)

May involve rounding or truncation.