io.smallrye.mutiny.subscription

Class SwitchableSubscriptionSubscriber<O>

java.lang.Object

io.smallrye.mutiny.subscription.SwitchableSubscriptionSubscriber<O>

Type Parameters:

O - outgoing item type

All Implemented Interfaces:

MultiSubscriber<O>, org.reactivestreams.Subscriber<O>, org.reactivestreams.Subscription

Direct Known Subclasses:

MultiRepeatUntilOp.RepeatProcessor

public abstract class SwitchableSubscriptionSubscriber<O>
extends Object
implements MultiSubscriber<O>, org.reactivestreams.Subscription

An implementation of Subscription that allows switching the upstream, dealing with the requests accordingly.

You must invoke emitted(long) after delivered items to manage the request per subscription consistently.

Field Summary

Fields

Modifier and Type	Field and Description
protected AtomicReference<org.reactivestreams.Subscription>	currentUpstream The current upstream
protected MultiSubscriber<? super O>	downstream The downstream subscriber

Constructor Summary

Constructors

Constructor and Description
SwitchableSubscriptionSubscriber(MultiSubscriber<? super O> downstream)

Method Summary

Modifier and Type	Method and Description
void	cancel()
protected boolean	cancelUpstreamOnSwitch()
void	emitted(long n)
boolean	isCancelled()
void	onCompletion() Method called when the upstream emits a completion terminal event.
void	onFailure(Throwable t) Method called when the upstream emits a failure terminal event.
void	onSubscribe(org.reactivestreams.Subscription s)
void	request(long n)
protected void	setOrSwitchUpstream(org.reactivestreams.Subscription newUpstream)

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.MultiSubscriber

onComplete, onError, onItem, onNext

Field Detail

downstream

protected final MultiSubscriber<? super O> downstream

The downstream subscriber

currentUpstream

protected final AtomicReference<org.reactivestreams.Subscription> currentUpstream

The current upstream

Constructor Detail

SwitchableSubscriptionSubscriber

public SwitchableSubscriptionSubscriber(MultiSubscriber<? super O> downstream)

Method Detail

cancel

public void cancel()

Specified by:

cancel in interface org.reactivestreams.Subscription

isCancelled

public boolean isCancelled()

onCompletion

public void onCompletion()

Description copied from interface: MultiSubscriber

Method called when the upstream emits a completion terminal event.

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

Specified by:

onCompletion in interface MultiSubscriber<O>

onFailure

public void onFailure(Throwable t)

Description copied from interface: MultiSubscriber

Method called when the upstream emits a failure terminal event.

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

Specified by:

onFailure in interface MultiSubscriber<O>

Parameters:

t - the failure, must not be null.

onSubscribe

public void onSubscribe(org.reactivestreams.Subscription s)

Specified by:

onSubscribe in interface org.reactivestreams.Subscriber<O>

emitted

public void emitted(long n)

request

public final void request(long n)

Specified by:

request in interface org.reactivestreams.Subscription

setOrSwitchUpstream

protected final void setOrSwitchUpstream(org.reactivestreams.Subscription newUpstream)

cancelUpstreamOnSwitch

protected boolean cancelUpstreamOnSwitch()

Returns:

true if we need to cancel the current subscription when we switch the upstreams.