Package reactor.core.publisher

Interface Sinks.ManyWithUpstream<T>

Type Parameters:

T - the type of data emitted by the sink

All Superinterfaces:

Scannable, Sinks.Many<T>

All Known Implementing Classes:

EmitterProcessor

Enclosing class:

Sinks

public static interface Sinks.ManyWithUpstream<T>
extends Sinks.Many<T>

A Sinks.Many which additionally allows being subscribed to an upstream Publisher, which is an advanced pattern requiring external synchronization. See subscribeTo(Publisher)} for more details.

Nested Class Summary

Nested classes/interfaces inherited from interface reactor.core.Scannable

Scannable.Attr<T>

Field Summary

Fields inherited from interface reactor.core.Scannable

OPERATOR_NAME_UNRELATED_WORDS_PATTERN

Method Summary

Modifier and Type	Method	Description
Disposable	subscribeTo(Publisher<? extends T> upstream)	Explicitly subscribe this Sinks.Many to an upstream Publisher without exposing it as a Subscriber at all.

Methods inherited from interface reactor.core.Scannable

actuals, inners, isScanAvailable, name, parents, scan, scanOrDefault, scanUnsafe, stepName, steps, tags, tagsDeduplicated

Methods inherited from interface reactor.core.publisher.Sinks.Many

asFlux, currentSubscriberCount, emitComplete, emitError, emitNext, tryEmitComplete, tryEmitError, tryEmitNext

Method Details

subscribeTo

Disposable subscribeTo(Publisher<? extends T> upstream)

Explicitly subscribe this Sinks.Many to an upstream Publisher without exposing it as a Subscriber at all.

Note that when this is done, one MUST stop using emit/tryEmit APIs, reserving signal creation to be the sole responsibility of the upstream Publisher.

The returned Disposable provides a way of both unsubscribing from the upstream and terminating the sink: currently registered subscribers downstream receive an onError signal with a CancellationException and further attempts at subscribing to the sink will trigger a similar signal immediately (in which case the returned Disposable might be no-op).

Any attempt at subscribing the same Sinks.ManyWithUpstream multiple times throws an IllegalStateException indicating that the subscription must be unique.