Package io.opentelemetry.sdk.metrics.internal.state

Class CallbackRegistration

java.lang.Object

io.opentelemetry.sdk.metrics.internal.state.CallbackRegistration

public final class CallbackRegistration
extends java.lang.Object

A registered callback.

This class is internal and is hence not for public use. Its APIs are unstable and can change at any time.

Field Summary

Fields

Modifier and Type	Field	Description
private java.lang.Runnable	callback
private boolean	hasStorages
private java.util.List<InstrumentDescriptor>	instrumentDescriptors
private static java.util.logging.Logger	logger
private java.util.List<SdkObservableMeasurement>	observableMeasurements
private ThrottlingLogger	throttlingLogger

Constructor Summary

Constructors

Modifier	Constructor	Description
private	CallbackRegistration(java.util.List<SdkObservableMeasurement> observableMeasurements, java.lang.Runnable callback)

Method Summary

Modifier and Type	Method	Description
static CallbackRegistration	create(java.util.List<SdkObservableMeasurement> observableMeasurements, java.lang.Runnable runnable)	Create a callback registration.
void	invokeCallback(RegisteredReader reader, long startEpochNanos, long epochNanos)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final java.util.logging.Logger logger

throttlingLogger

private final ThrottlingLogger throttlingLogger

observableMeasurements

private final java.util.List<SdkObservableMeasurement> observableMeasurements

callback

private final java.lang.Runnable callback

instrumentDescriptors

private final java.util.List<InstrumentDescriptor> instrumentDescriptors

hasStorages

private final boolean hasStorages

Constructor Detail

CallbackRegistration

private CallbackRegistration(java.util.List<SdkObservableMeasurement> observableMeasurements,
                             java.lang.Runnable callback)

Method Detail

create

public static CallbackRegistration create(java.util.List<SdkObservableMeasurement> observableMeasurements,
                                          java.lang.Runnable runnable)

Create a callback registration.

The observableMeasurements define the set of measurements the runnable may record to. The active reader of each observableMeasurements is set via SdkObservableMeasurement.setActiveReader(RegisteredReader, long, long) before runnable is called, and set to null afterwards.

Parameters:

observableMeasurements - the measurements that the runnable may record to

runnable - the callback

Returns:

the callback registration

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

invokeCallback

public void invokeCallback(RegisteredReader reader,
                           long startEpochNanos,
                           long epochNanos)