Package io.opentelemetry.sdk.metrics

Class ViewBuilder

java.lang.Object

io.opentelemetry.sdk.metrics.ViewBuilder

public final class ViewBuilder
extends Object

A builder for View.

Since:

1.14.0

Field Summary

Fields

Modifier and Type	Field	Description
private Aggregation	aggregation
private int	cardinalityLimit
private String	description
private String	name
private AttributesProcessor	processor

Constructor Summary

Constructors

Constructor	Description
ViewBuilder()

Method Summary

Modifier and Type	Method	Description
(package private) ViewBuilder	addAttributesProcessor(AttributesProcessor attributesProcessor)	Add an attribute processor.
View	build()	Returns a View with the configuration of this builder.
ViewBuilder	setAggregation(Aggregation aggregation)	Sets Aggregation.
ViewBuilder	setAttributeFilter(Predicate<String> keyFilter)	Sets a filter for attributes keys.
ViewBuilder	setAttributeFilter(Set<String> keysToRetain)	Sets a filter which retains attribute keys included in keysToRetain.
ViewBuilder	setCardinalityLimit(int cardinalityLimit)	Set the cardinality limit.
ViewBuilder	setDescription(String description)	Sets the description of the resulting metric.
ViewBuilder	setName(String name)	Sets the name of the resulting metric.

Methods inherited from class java.lang.Object

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

Field Details

name

@Nullable
private String name

description

@Nullable
private String description

aggregation

private Aggregation aggregation

processor

private AttributesProcessor processor

cardinalityLimit

private int cardinalityLimit

Constructor Details

ViewBuilder

ViewBuilder()

Method Details

setName

public ViewBuilder setName(String name)

Sets the name of the resulting metric.

Parameters:

name - metric name or null if the matched instrument name should be used.

setDescription

public ViewBuilder setDescription(String description)

Sets the description of the resulting metric.

Parameters:

description - metric description or null if the matched instrument description should be used.

setAggregation

public ViewBuilder setAggregation(Aggregation aggregation)

Sets Aggregation.

Parameters:

aggregation - aggregation to use.

setAttributeFilter

public ViewBuilder setAttributeFilter(Set<String> keysToRetain)

Sets a filter which retains attribute keys included in keysToRetain.

Since:

1.30.0

setAttributeFilter

public ViewBuilder setAttributeFilter(Predicate<String> keyFilter)

Sets a filter for attributes keys.

Only attribute keys that pass the supplied Predicate will be included in the output.

Parameters:

keyFilter - filter for attribute keys to include.

addAttributesProcessor

ViewBuilder addAttributesProcessor(AttributesProcessor attributesProcessor)

Add an attribute processor.

This method is experimental so not public. You may reflectively call it using SdkMeterProviderUtil.appendFilteredBaggageAttributes(ViewBuilder, Predicate), SdkMeterProviderUtil.appendAllBaggageAttributes(ViewBuilder).

Note: not currently stable but additional attribute processors can be configured via SdkMeterProviderUtil.appendAllBaggageAttributes(ViewBuilder).

setCardinalityLimit

public ViewBuilder setCardinalityLimit(int cardinalityLimit)

Set the cardinality limit.

Read MemoryMode to understand the memory usage behavior of reaching cardinality limit.

Parameters:

cardinalityLimit - the maximum number of series for a metric

Since:

1.44.0

build

public View build()

Returns a View with the configuration of this builder.