Package io.smallrye.mutiny.helpers

Class EmptyUniSubscription

java.lang.Object

io.smallrye.mutiny.helpers.EmptyUniSubscription

All Implemented Interfaces:

Cancellable, UniSubscription, org.reactivestreams.Subscription

public class EmptyUniSubscription
extends java.lang.Object
implements UniSubscription

An implementation of UniSubscription ignoring all call to cancel(). This implementation should be accessed using the CANCELLED instance.

Field Summary

Fields

Modifier and Type	Field	Description
static UniSubscription	CANCELLED	A subscription that has been cancelled.
static UniSubscription	DONE	A subscription that has been done.

Method Summary

Modifier and Type	Method	Description
void	cancel()	Requests the Uni to cancel and clean up resources.
static <T> void	propagateFailureEvent(UniSubscriber<T> subscriber, java.lang.Throwable failure)	Propagates a failure to the given downstream subscriber.

Methods inherited from class java.lang.Object

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

Methods inherited from interface io.smallrye.mutiny.subscription.UniSubscription

request

Field Detail

CANCELLED

public static final UniSubscription CANCELLED

A subscription that has been cancelled. The instance that can be shared. Calling cancel() is a no-op.

DONE

public static final UniSubscription DONE

A subscription that has been done. The instance that can be shared. Calling cancel() is a no-op.

Method Detail

propagateFailureEvent

public static <T> void propagateFailureEvent(UniSubscriber<T> subscriber,
                                             java.lang.Throwable failure)

Propagates a failure to the given downstream subscriber. The subscriber receive the CANCELLED subscription followed with the failure.

Type Parameters:

T - the expected item type

Parameters:

subscriber - the subscriber, must not be null

failure - the failure, must not be null

cancel

public void cancel()

Description copied from interface: UniSubscription

Requests the Uni to cancel and clean up resources. If the item is retrieved after cancellation, it is not forwarded to the subscriber. If the cancellation happens after the delivery of the item, this call is ignored.

Calling this method, emits the cancellation event upstream.

Specified by:

cancel in interface Cancellable

Specified by:

cancel in interface org.reactivestreams.Subscription

Specified by:

cancel in interface UniSubscription