Top Description Inners Fields Constructors Methods
reactor.core.publisher

pack-priv final Class FluxMetricsFuseable<T>

extends InternalFluxOperator<T, T>
implements Fuseable
Class Inheritance
All Implemented Interfaces
reactor.core.Fuseable
Annotations
@Deprecated
Imports
java.util.concurrent.TimeUnit, io.micrometer.core.instrument.Clock, io.micrometer.core.instrument.MeterRegistry, io.micrometer.core.instrument.Tags, io.micrometer.core.instrument.Timer, org.reactivestreams.Subscription, reactor.core.CoreSubscriber, .Fuseable, reactor.util.Metrics, reactor.util.annotation.Nullable

Deprecated

Activate metrics gathering on a Flux (Fuseable version), assumes Micrometer is on the classpath.

Implementation Note

Metrics.isInstrumentationAvailable() test should be performed BEFORE instantiating or referencing this class, otherwise a NoClassDefFoundError will be thrown if Micrometer is not there.

Authors
Simon Baslé, Stephane Maldini

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class

Field Summary

Modifier and TypeField and Description
pack-priv final String
pack-priv final io.micrometer.core.instrument.MeterRegistry
pack-priv final io.micrometer.core.instrument.Tags
Inherited from reactor.core.publisher.InternalFluxOperator:
optimizableOperator

Constructor Summary

AccessConstructor and Description
pack-priv
FluxMetricsFuseable(Flux<? extends T> flux)

Method Summary

Modifier and TypeMethod and Description
public Object
scanUnsafe(Scannable.Attr<T>
a Attr to resolve for the component.
key
)

Overrides reactor.core.publisher.InternalFluxOperator.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place.
public CoreSubscriber<? super T>
subscribeOrReturn(CoreSubscriber<? super T> actual)

Implements abstract reactor.core.publisher.InternalFluxOperator.subscribeOrReturn.

Implements reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Allow delegation of the subscription by returning a CoreSubscriber, or force subscription encapsulation by returning null.
Inherited from reactor.core.publisher.InternalFluxOperator:
nextOptimizableSourcesourcesubscribe

Field Detail

nameback to summary
pack-priv final String name
registryCandidateback to summary
pack-priv final io.micrometer.core.instrument.MeterRegistry registryCandidate
tagsback to summary
pack-priv final io.micrometer.core.instrument.Tags tags

Constructor Detail

FluxMetricsFuseableback to summary
pack-priv FluxMetricsFuseable(Flux<? extends T> flux)

Method Detail

scanUnsafeback to summary
public Object scanUnsafe(Scannable.Attr<T> key)

Overrides reactor.core.publisher.InternalFluxOperator.scanUnsafe.

Implements reactor.core.Scannable.scanUnsafe.

Doc from reactor.core.Scannable.scanUnsafe.

This method is used internally by components to define their key-value mappings in a single place. Although it is ignoring the generic type of the Attr key, implementors should take care to return values of the correct type, and return null if no specific value is available.

For public consumption of attributes, prefer using scan(Attr), which will return a typed value and fall back to the key's default if the component didn't define any mapping.

Parameters
key:Scannable.Attr<T>

a Attr to resolve for the component.

Returns:Object

the value associated to the key for that specific component, or null if none.

Annotations
@Override
subscribeOrReturnback to summary
public CoreSubscriber<? super T> subscribeOrReturn(CoreSubscriber<? super T> actual)

Implements abstract reactor.core.publisher.InternalFluxOperator.subscribeOrReturn.

Implements reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Doc from reactor.core.publisher.OptimizableOperator.subscribeOrReturn.

Allow delegation of the subscription by returning a CoreSubscriber, or force subscription encapsulation by returning null. This can be used in conjunction with nextOptimizableSource() to perform subscription in a loop instead of by recursion.

Returns:CoreSubscriber<? super T>

next CoreSubscriber or "null" if the subscription was already done inside the method

Annotations
@Override
reactor.core.publisher back to summary

pack-priv final Class FluxMetricsFuseable.MetricsFuseableSubscriber<T>

extends FluxMetrics.MetricsSubscriber<T>
implements Fuseable, Fuseable.QueueSubscription<T>
Class Inheritance
All Implemented Interfaces
reactor.core.Fuseable.QueueSubscription, org.reactivestreams.Subscription, java.util.Queue, java.util.Collection, java.lang.Iterable, reactor.core.Fuseable

Implementation Note

we don't want to particularly track fusion-specific calls, as this subscriber would only detect fused subsequences immediately upstream of it, so Counters would be a bit irrelevant. We however want to instrument onNext counts.

Field Summary

Modifier and TypeField and Description
pack-priv int
pack-priv Fuseable.QueueSubscription<T>
Inherited from reactor.core.publisher.FluxMetrics.MetricsSubscriber:
actualclockcommonTagsdonelastNextEventNanosonNextIntervalTimerregistryrequestedCounterssequenceNamesubscribeToTerminateSample

Constructor Summary

AccessConstructor and Description
pack-priv
MetricsFuseableSubscriber(CoreSubscriber<? super T> actual, io.micrometer.core.instrument.MeterRegistry registry, io.micrometer.core.instrument.Clock clock, String sequenceName, io.micrometer.core.instrument.Tags sequenceTags)

Method Summary

Modifier and TypeMethod and Description
public void
clear()

Implements java.util.Collection.clear.

Removes all of the elements from this collection (optional operation).
public boolean
isEmpty()

Implements java.util.Collection.isEmpty.

Returns true if this collection contains no elements.
public void
onNext(T
the element signaled
t
)

Overrides reactor.core.publisher.FluxMetrics.MetricsSubscriber.onNext.

Implements org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).
public void
public T
poll()

Implements java.util.Queue.poll.

Retrieves and removes the head of this queue, or returns null if this queue is empty.
public int
requestFusion(int
the mode requested by the intermediate operator
mode
)

Implements reactor.core.Fuseable.QueueSubscription.requestFusion.

Request a specific fusion mode from this QueueSubscription.
public int
size()

Implements java.util.Collection.size.

Returns the number of elements in this collection.
Inherited from reactor.core.publisher.FluxMetrics.MetricsSubscriber:
actualcancelonCompleteonErrorrequestscanUnsafe

Field Detail

modeback to summary
pack-priv int mode
qsback to summary
pack-priv Fuseable.QueueSubscription<T> qs
Annotations
@Nullable

Constructor Detail

MetricsFuseableSubscriberback to summary
pack-priv MetricsFuseableSubscriber(CoreSubscriber<? super T> actual, io.micrometer.core.instrument.MeterRegistry registry, io.micrometer.core.instrument.Clock clock, String sequenceName, io.micrometer.core.instrument.Tags sequenceTags)

Method Detail

clearback to summary
public void clear()

Implements java.util.Collection.clear.

Doc from java.util.Collection.clear.

Removes all of the elements from this collection (optional operation). The collection will be empty after this method returns.

Annotations
@Override
isEmptyback to summary
public boolean isEmpty()

Implements java.util.Collection.isEmpty.

Doc from java.util.Collection.isEmpty.

Returns true if this collection contains no elements.

Returns:boolean

true if this collection contains no elements

Annotations
@Override
onNextback to summary
public void onNext(T t)

Overrides reactor.core.publisher.FluxMetrics.MetricsSubscriber.onNext.

Implements org.reactivestreams.Subscriber.onNext.

Doc from org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).

Parameters
t:T

the element signaled

Annotations
@Override
onSubscribeback to summary
public void onSubscribe(Subscription s)

Overrides reactor.core.publisher.FluxMetrics.MetricsSubscriber.onSubscribe.

Implements reactor.core.CoreSubscriber.onSubscribe.

Doc from reactor.core.CoreSubscriber.onSubscribe.

Implementors should initialize any state used by onNext(Object) before calling Subscription#request(long). Should further onNext related state modification occur, thread-safety will be required.

Note that an invalid request <= 0 will not produce an onError and will simply be ignored or reported through a debug-enabled reactor.util.Logger. Invoked after calling Publisher#subscribe(Subscriber).

No data will start flowing until Subscription#request(long) is invoked.

It is the responsibility of this Subscriber instance to call Subscription#request(long) whenever more data is wanted.

The Publisher will send notifications only in response to Subscription#request(long).

Parameters
s:Subscription

Doc from org.reactivestreams.Subscriber.onSubscribe.

the Subscription that allows requesting data via Subscription#request(long)

Annotations
@Override
pollback to summary
public T poll()

Implements java.util.Queue.poll.

Doc from java.util.Queue.poll.

Retrieves and removes the head of this queue, or returns null if this queue is empty.

Returns:T

the head of this queue, or null if this queue is empty

Annotations
@Override
@Nullable
requestFusionback to summary
public int requestFusion(int mode)

Implements reactor.core.Fuseable.QueueSubscription.requestFusion.

Doc from reactor.core.Fuseable.QueueSubscription.requestFusion.

Request a specific fusion mode from this QueueSubscription.

One should request either SYNC, ASYNC or ANY modes (never NONE) and the implementor should return NONE, SYNC or ASYNC (never ANY).

For example, if a source supports only ASYNC fusion but the intermediate operator supports only SYNC fuseable sources, the operator may request SYNC fusion and the source can reject it via NONE, thus the operator can return NONE as well to downstream and the fusion doesn't happen.

Parameters
mode:int

the mode requested by the intermediate operator

Returns:int

the actual fusion mode activated

Annotations
@Override
sizeback to summary
public int size()

Implements java.util.Collection.size.

Doc from java.util.Collection.size.

Returns the number of elements in this collection. If this collection contains more than Integer.MAX_VALUE elements, returns Integer.MAX_VALUE.

Returns:int

the number of elements in this collection

Annotations
@Override