Interface MetricExporter

All Superinterfaces:

AggregationTemporalitySelector, AutoCloseable, Closeable, DefaultAggregationSelector

All Known Implementing Classes:

OtlpGrpcMetricExporter, OtlpHttpMetricExporter

public interface MetricExporter
extends AggregationTemporalitySelector, DefaultAggregationSelector, Closeable

A Metric Exporter is a push based interface for exporting MetricData out of SdkMeterProvider.

To use, associate an exporter with a PeriodicMetricReader, and register with the metrics SDK via SdkMeterProviderBuilder.registerMetricReader(MetricReader).

Since:

1.14.0

Method Summary

Modifier and Type	Method	Description
default void	close()	Closes this MetricExporter, releasing any resources.
CompletableResultCode	export(Collection<MetricData> metrics)	Exports the metrics.
CompletableResultCode	flush()	A hint that any metrics previously export(Collection)ed should be completed.
default Aggregation	getDefaultAggregation(InstrumentType instrumentType)	Return the default aggregation for the InstrumentType.
default MemoryMode	getMemoryMode()	Returns the memory mode used by this exporter's associated reader.
CompletableResultCode	shutdown()	Shuts down the exporter.

Methods inherited from interface AggregationTemporalitySelector

getAggregationTemporality

Methods inherited from interface DefaultAggregationSelector

with

Method Details

getDefaultAggregation

default Aggregation getDefaultAggregation(InstrumentType instrumentType)

Return the default aggregation for the InstrumentType.

Specified by:

getDefaultAggregation in interface DefaultAggregationSelector

Since:

1.16.0

See Also:

• DefaultAggregationSelector.getDefaultAggregation(InstrumentType)

getMemoryMode

default MemoryMode getMemoryMode()

Returns the memory mode used by this exporter's associated reader.

Returns:

The MemoryMode used by this exporter's associated reader

Since:

1.31.0

export

CompletableResultCode export(Collection<MetricData> metrics)

Exports the metrics. The caller (i.e. PeriodicMetricReader will not call export until the previous call completes.

Parameters:

metrics - the metrics to export.

Returns:

the result of the export, which is often an asynchronous operation.

flush

CompletableResultCode flush()

A hint that any metrics previously export(Collection)ed should be completed.

Returns:

the result of the flush, which is often an asynchronous operation.

shutdown

CompletableResultCode shutdown()

Shuts down the exporter.

Called when PeriodicMetricReader.shutdown() of the associated reader is called.

Returns:

a CompletableResultCode which is completed when shutdown completes.

close

default void close()

Closes this MetricExporter, releasing any resources.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable