Class CallbackRegistration
- java.lang.Object
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- io.opentelemetry.sdk.metrics.internal.state.CallbackRegistration
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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.
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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
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Constructor Summary
Constructors Modifier Constructor Description private
CallbackRegistration(java.util.List<SdkObservableMeasurement> observableMeasurements, java.lang.Runnable callback)
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Method Summary
All Methods Static Methods Instance Methods Concrete Methods 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()
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Field Detail
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logger
private static final java.util.logging.Logger logger
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throttlingLogger
private final ThrottlingLogger throttlingLogger
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observableMeasurements
private final java.util.List<SdkObservableMeasurement> observableMeasurements
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callback
private final java.lang.Runnable callback
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instrumentDescriptors
private final java.util.List<InstrumentDescriptor> instrumentDescriptors
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hasStorages
private final boolean hasStorages
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Constructor Detail
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CallbackRegistration
private CallbackRegistration(java.util.List<SdkObservableMeasurement> observableMeasurements, java.lang.Runnable callback)
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Method Detail
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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 therunnable
may record to. The active reader of eachobservableMeasurements
is set viaSdkObservableMeasurement.setActiveReader(RegisteredReader, long, long)
beforerunnable
is called, and set tonull
afterwards.- Parameters:
observableMeasurements
- the measurements that the runnable may record torunnable
- the callback- Returns:
- the callback registration
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toString
public java.lang.String toString()
- Overrides:
toString
in classjava.lang.Object
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invokeCallback
public void invokeCallback(RegisteredReader reader, long startEpochNanos, long epochNanos)
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