Package io.opentelemetry.sdk.metrics.export

Interface AggregationTemporalitySelector

All Known Subinterfaces:

MetricExporter, MetricReader

All Known Implementing Classes:

PeriodicMetricReader

Functional Interface:

This is a functional interface and can therefore be used as the assignment target for a lambda expression or method reference.

@FunctionalInterface
public interface AggregationTemporalitySelector

A functional interface that selects AggregationTemporality based on InstrumentType.

Since:

1.14.0

Method Summary

Modifier and Type	Method	Description
static AggregationTemporalitySelector	alwaysCumulative()	A common implementation of AggregationTemporalitySelector which returns AggregationTemporality.CUMULATIVE for all instruments.
static String	asString(AggregationTemporalitySelector selector)	Returns a string representation of this selector, for using in Object.toString() implementations.
static AggregationTemporalitySelector	deltaPreferred()	A common implementation of AggregationTemporalitySelector which indicates delta preference.
AggregationTemporality	getAggregationTemporality(InstrumentType instrumentType)	Return the aggregation temporality for the InstrumentType.
static AggregationTemporalitySelector	lowMemory()	A common implementation of AggregationTemporalitySelector which reduces memory.

Method Details

alwaysCumulative

static AggregationTemporalitySelector alwaysCumulative()

A common implementation of AggregationTemporalitySelector which returns AggregationTemporality.CUMULATIVE for all instruments.

deltaPreferred

static AggregationTemporalitySelector deltaPreferred()

A common implementation of AggregationTemporalitySelector which indicates delta preference.

AggregationTemporality.DELTA is returned for InstrumentType.COUNTER, InstrumentType.OBSERVABLE_COUNTER, and InstrumentType.HISTOGRAM. AggregationTemporality.CUMULATIVE is returned for InstrumentType.UP_DOWN_COUNTER and InstrumentType.OBSERVABLE_UP_DOWN_COUNTER.

lowMemory

static AggregationTemporalitySelector lowMemory()

A common implementation of AggregationTemporalitySelector which reduces memory.

AggregationTemporality.DELTA is returned for InstrumentType.COUNTER and InstrumentType.HISTOGRAM. AggregationTemporality.CUMULATIVE is returned for InstrumentType.UP_DOWN_COUNTER, InstrumentType.OBSERVABLE_UP_DOWN_COUNTER, and InstrumentType.OBSERVABLE_COUNTER.

Since:

1.28.0

getAggregationTemporality

AggregationTemporality getAggregationTemporality(InstrumentType instrumentType)

Return the aggregation temporality for the InstrumentType.

asString

static String asString(AggregationTemporalitySelector selector)

Returns a string representation of this selector, for using in Object.toString() implementations.

Since:

1.38.0