Top Description Inners Fields Constructors Methods
io.r2dbc.pool

pack-priv Class MonoDiscardOnCancel<T>

extends MonoOperator<T, T>
Class Inheritance
Imports
org.reactivestreams.Subscriber, .Subscription, reactor.core.CoreSubscriber, reactor.core.publisher.Mono, .MonoOperator, .Operators, reactor.util.Logger, .Loggers, reactor.util.context.Context, java.util.concurrent.atomic.AtomicBoolean, java.util.function.BooleanSupplier
A decorating operator that replays signals from its source to a Subscriber and drains the source upon cancel and drops data signals until termination. Draining data is required to complete a particular request/response window and clear the protocol state as client code expects to start a request/response conversation without any previous response state.

Nested and Inner Type Summary

Modifier and TypeClass and Description
pack-priv static class
MonoDiscardOnCancel.MonoDiscardOnCancelSubscriber<T>

Field Summary

Modifier and TypeField and Description
private final BooleanSupplier
cancelConsumer

private static final Logger
logger

Inherited from reactor.core.publisher.MonoOperator:
source

Constructor Summary

AccessConstructor and Description
pack-priv
MonoDiscardOnCancel(Mono<? extends T> source, BooleanSupplier cancelConsumer)

Method Summary

Modifier and TypeMethod and Description
public void
subscribe(CoreSubscriber<? super T>
the Subscriber interested into the published sequence
actual)

Implements abstract reactor.core.publisher.Mono.subscribe.

Implements reactor.core.CorePublisher.subscribe.

An internal Publisher#subscribe(Subscriber) that will bypass Hooks#onLastOperator(Function) pointcut.
Inherited from reactor.core.publisher.MonoOperator:
scanUnsafe

Field Detail

cancelConsumerback to summary
private final BooleanSupplier cancelConsumer
loggerback to summary
private static final Logger logger

Constructor Detail

MonoDiscardOnCancelback to summary
pack-priv MonoDiscardOnCancel(Mono<? extends T> source, BooleanSupplier cancelConsumer)

Method Detail

subscribeback to summary
public void subscribe(CoreSubscriber<? super T> actual)

Implements abstract reactor.core.publisher.Mono.subscribe.

Implements reactor.core.CorePublisher.subscribe.

Doc from reactor.core.publisher.Mono.subscribe.

An internal Publisher#subscribe(Subscriber) that will bypass Hooks#onLastOperator(Function) pointcut.

In addition to behave as expected by Publisher#subscribe(Subscriber) in a controlled manner, it supports direct subscribe-time Context passing.

Parameters
actual:CoreSubscriber<? super T>

the Subscriber interested into the published sequence

Annotations
@Override
io.r2dbc.pool back to summary

pack-priv Class MonoDiscardOnCancel.MonoDiscardOnCancelSubscriber<T>

extends AtomicBoolean
implements CoreSubscriber<T>, Subscription
Class Inheritance
All Implemented Interfaces
org.reactivestreams.Subscription, reactor.core.CoreSubscriber, org.reactivestreams.Subscriber

Field Summary

Modifier and TypeField and Description
pack-priv final CoreSubscriber<T>
actual

pack-priv final BooleanSupplier
cancelConsumer

pack-priv final Context
ctx

pack-priv Subscription
s

Constructor Summary

AccessConstructor and Description
pack-priv
MonoDiscardOnCancelSubscriber(CoreSubscriber<T> actual, BooleanSupplier cancelConsumer)

Method Summary

Modifier and TypeMethod and Description
public void
cancel()

Implements org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.
public Context
currentContext()

Overrides default reactor.core.CoreSubscriber.currentContext.

Request a Context from dependent components which can include downstream operators during subscribing or a terminal org.reactivestreams.Subscriber.
public void
onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Successful terminal state.
public void
onError(Throwable
the throwable signaled
t)

Implements org.reactivestreams.Subscriber.onError.

Failed terminal state.
public void
onNext(T
the element signaled
t)

Implements org.reactivestreams.Subscriber.onNext.

Data notification sent by the Publisher in response to requests to Subscription#request(long).
public void
onSubscribe(Subscription
the Subscription that allows requesting data via Subscription#request(long)
s)

Implements reactor.core.CoreSubscriber.onSubscribe.

Implementors should initialize any state used by onNext(Object) before calling Subscription#request(long).
public void
request(long
the strictly positive number of elements to requests to the upstream Publisher
n)

Implements org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.
Inherited from java.util.concurrent.atomic.AtomicBoolean:
compareAndExchangecompareAndExchangeAcquirecompareAndExchangeReleasecompareAndSetgetgetAcquiregetAndSetgetOpaquegetPlainlazySetsetsetOpaquesetPlainsetReleasetoStringweakCompareAndSetweakCompareAndSetAcquireweakCompareAndSetPlainweakCompareAndSetReleaseweakCompareAndSetVolatile

Field Detail

actualback to summary
pack-priv final CoreSubscriber<T> actual
cancelConsumerback to summary
pack-priv final BooleanSupplier cancelConsumer
ctxback to summary
pack-priv final Context ctx
sback to summary
pack-priv Subscription s

Constructor Detail

MonoDiscardOnCancelSubscriberback to summary
pack-priv MonoDiscardOnCancelSubscriber(CoreSubscriber<T> actual, BooleanSupplier cancelConsumer)

Method Detail

cancelback to summary
public void cancel()

Implements org.reactivestreams.Subscription.cancel.

Doc from org.reactivestreams.Subscription.cancel.

Request the Publisher to stop sending data and clean up resources.

Data may still be sent to meet previously signalled demand after calling cancel.

Annotations
@Override
currentContextback to summary
public Context currentContext()

Overrides default reactor.core.CoreSubscriber.currentContext.

Doc from reactor.core.CoreSubscriber.currentContext.

Request a Context from dependent components which can include downstream operators during subscribing or a terminal org.reactivestreams.Subscriber.

Returns:Context

a resolved context or Context#empty()

Annotations
@Override
onCompleteback to summary
public void onComplete()

Implements org.reactivestreams.Subscriber.onComplete.

Doc from org.reactivestreams.Subscriber.onComplete.

Successful terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Annotations
@Override
onErrorback to summary
public void onError(Throwable t)

Implements org.reactivestreams.Subscriber.onError.

Doc from org.reactivestreams.Subscriber.onError.

Failed terminal state.

No further events will be sent even if Subscription#request(long) is invoked again.

Parameters
t:Throwable

the throwable signaled

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

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)

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
requestback to summary
public void request(long n)

Implements org.reactivestreams.Subscription.request.

Doc from org.reactivestreams.Subscription.request.

No events will be sent by a Publisher until demand is signaled via this method.

It can be called however often and whenever needed—but if the outstanding cumulative demand ever becomes Long.MAX_VALUE or more, it may be treated by the Publisher as "effectively unbounded".

Whatever has been requested can be sent by the Publisher so only signal demand for what can be safely handled.

A Publisher can send less than is requested if the stream ends but then must emit either Subscriber#onError(Throwable) or Subscriber#onComplete().

Parameters
n:long

the strictly positive number of elements to requests to the upstream Publisher

Annotations
@Override