Package io.grpc

Interface MetricRecorder

@Internal
public interface MetricRecorder

An interface used for recording gRPC metrics. Implementations of this interface are responsible for collecting and potentially reporting metrics from various gRPC components.

Nested Class Summary

Nested Classes

Modifier and Type	Interface	Description
static interface	MetricRecorder.BatchCallback	Callback to record gauge values.
static interface	MetricRecorder.BatchRecorder	Recorder for instrument values produced by a batch callback.
static interface	MetricRecorder.Registration	A handle to a registration, that allows unregistration.

Method Summary

Modifier and Type	Method	Description
default void	addDoubleCounter(DoubleCounterMetricInstrument metricInstrument, double value, List<String> requiredLabelValues, List<String> optionalLabelValues)	Adds a value for a double-precision counter metric instrument.
default void	addLongCounter(LongCounterMetricInstrument metricInstrument, long value, List<String> requiredLabelValues, List<String> optionalLabelValues)	Adds a value for a long valued counter metric instrument.
default void	recordDoubleHistogram(DoubleHistogramMetricInstrument metricInstrument, double value, List<String> requiredLabelValues, List<String> optionalLabelValues)	Records a value for a double-precision histogram metric instrument.
default void	recordLongHistogram(LongHistogramMetricInstrument metricInstrument, long value, List<String> requiredLabelValues, List<String> optionalLabelValues)	Records a value for a long valued histogram metric instrument.
default MetricRecorder.Registration	registerBatchCallback(MetricRecorder.BatchCallback callback, CallbackMetricInstrument... metricInstruments)	Registers a callback to produce metric values for only the listed instruments.

Method Details

addDoubleCounter

default void addDoubleCounter(DoubleCounterMetricInstrument metricInstrument,
 double value,
 List<String> requiredLabelValues,
 List<String> optionalLabelValues)

Adds a value for a double-precision counter metric instrument.

Parameters:

metricInstrument - The counter metric instrument to add the value against.

value - The value to add.

requiredLabelValues - A list of required label values for the metric.

optionalLabelValues - A list of additional, optional label values for the metric.

addLongCounter

default void addLongCounter(LongCounterMetricInstrument metricInstrument,
 long value,
 List<String> requiredLabelValues,
 List<String> optionalLabelValues)

Adds a value for a long valued counter metric instrument.

Parameters:

metricInstrument - The counter metric instrument to add the value against.

value - The value to add.

requiredLabelValues - A list of required label values for the metric.

optionalLabelValues - A list of additional, optional label values for the metric.

recordDoubleHistogram

default void recordDoubleHistogram(DoubleHistogramMetricInstrument metricInstrument,
 double value,
 List<String> requiredLabelValues,
 List<String> optionalLabelValues)

Records a value for a double-precision histogram metric instrument.

Parameters:

metricInstrument - The histogram metric instrument to record the value against.

value - The value to record.

requiredLabelValues - A list of required label values for the metric.

optionalLabelValues - A list of additional, optional label values for the metric.

recordLongHistogram

default void recordLongHistogram(LongHistogramMetricInstrument metricInstrument,
 long value,
 List<String> requiredLabelValues,
 List<String> optionalLabelValues)

Records a value for a long valued histogram metric instrument.

Parameters:

metricInstrument - The histogram metric instrument to record the value against.

value - The value to record.

requiredLabelValues - A list of required label values for the metric.

optionalLabelValues - A list of additional, optional label values for the metric.

registerBatchCallback

default MetricRecorder.Registration registerBatchCallback(MetricRecorder.BatchCallback callback,
 CallbackMetricInstrument... metricInstruments)

Registers a callback to produce metric values for only the listed instruments. The returned registration must be closed when no longer needed, which will remove the callback.

Parameters:

callback - The callback to call to record.

metricInstruments - The metric instruments the callback will record against.