com.google.api.control.aggregator

Class MetricValues

java.lang.Object

com.google.api.control.aggregator.MetricValues

public final class MetricValues
extends java.lang.Object

Provide functions that enable aggregation of MetricValues.

Method Summary

Modifier and Type	Method and Description
static com.google.api.servicecontrol.v1.MetricValue	merge(com.google.api.MetricDescriptor.MetricKind kind, com.google.api.servicecontrol.v1.MetricValue prior, com.google.api.servicecontrol.v1.MetricValue latest) Merge prior with latest.
static com.google.common.hash.Hasher	putMetricValue(com.google.common.hash.Hasher h, com.google.api.servicecontrol.v1.MetricValue value) Updates h with the contents of value.
static com.google.common.hash.HashCode	sign(com.google.api.servicecontrol.v1.MetricValue value) Obtains the HashCode for the contents of value.

Methods inherited from class java.lang.Object

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

Method Detail

putMetricValue

public static com.google.common.hash.Hasher putMetricValue(com.google.common.hash.Hasher h,
                                                           com.google.api.servicecontrol.v1.MetricValue value)

Updates h with the contents of value.

Parameters:

h - a Hasher

value - a MetricValue to be added to the hash

Returns:

the Hasher, to allow fluent-style usage

sign

public static com.google.common.hash.HashCode sign(com.google.api.servicecontrol.v1.MetricValue value)

Obtains the HashCode for the contents of value.

Parameters:

value - a MetricValue to be signed

Returns:

the HashCode corresponding to value

merge

public static com.google.api.servicecontrol.v1.MetricValue merge(com.google.api.MetricDescriptor.MetricKind kind,
                                                                 com.google.api.servicecontrol.v1.MetricValue prior,
                                                                 com.google.api.servicecontrol.v1.MetricValue latest)

Merge prior with latest. If kind is MetricKind.DELTA then the result contains a combination of values in prior and latest. For all other kinds, it's sufficient to return the metric with the latest end time.

Parameters:

kind - the MetricKind

prior - a MetricValue instance

latest - a MetricValue, expected to be a later version of prior

Returns:

a new MetricValue that combines prior and latest depending on kind

Throws:

java.lang.IllegalArgumentException - if the prior and latest are have different types of value, or if the type is not mergeable