RxJava 3.1.x support

[linux-china]

From RxJava 3.1.1 https://github.com/ReactiveX/RxJava/releases/tag/v3.1.1

The operator fusion-related interfaces and two atomic queue implementations have been promoted to standard, thus officially supported in the io.reactivex.rxjava3.operators package. ReactiveX/RxJava#7320

The package for following classes changed:

• QueueFuseable
• QueueDisposable
• QueueSubscription
• ScalarSupplier
• SimpleQueue
• SimplePlainQueue
• SpscArrayQueue
• SpscLinkedArrayQueue

And RxJava3Adapter can not work with RxJava 3.1.x version.

[simonbasle]

Can you pinpoint what is breaking exactly? IIRC the RxJava3 adapater doesn't use any of these classes explicitly. I'm also wondering about the need to support RxJava 3.0.x?

[linux-china]

From https://github.com/reactor/reactor-addons/blob/main/reactor-adapter/src/main/java/reactor/adapter/rxjava/RxJava3Adapter.java

The following classes are not available from RxJava 3.1.1

import io.reactivex.rxjava3.internal.operators.completable.CompletableFromPublisher;
import io.reactivex.rxjava3.internal.operators.single.SingleFromPublisher;
import io.reactivex.rxjava3.internal.subscriptions.SubscriptionHelper;

[simonbasle]

indeed, got it. so what's the play here? we have to break support for RxJava 3.0.x and 3.1.0 in a patch release :/
any idea how the user base sizes compare between RxJava 3.0 and 3.1.1 ?

[linux-china]

I have no idea about this :) Now in my project, and I just inlined 4 interfaces in my jar:

I think it's ok to upgrade RxJava 3.1.x and document this change.

[semistone]

latest micronaut uses 3.1.5, I think it's better to upgrade.
RxJava3.0 user could still use the old version

[guillaumelamirand]

Do you have any update on supporting rxjava 3.1+?

[marcambier]

Hello !
This problem is critical for us, and avoids the use of rxJava 3.1.
In RxJava 3.1 release note , it's specified that the 3.0.x patch line won't be developed further.
Any progression of having a reactor-addons compatible with rxJava 3.1 ?

[OlegDokuka]

@linux-china @marcambier and others, would you like to make a contribution?