Added RxJava3 adapter #3315

mickverm · 2020-02-24T14:17:52Z

Closes #3297

provJoshMieczkowski · 2020-02-25T21:43:27Z

@mickverm you have some failing tests

mickverm · 2020-02-26T18:21:11Z

The following tests fail:

FlowableTest

responseRespectsBackPressure
bodyRespectsBackpressure
resultRespectsBackpressure

All with the same reason:

org.junit.ComparisonFailure: 
Expected :1
Actual   :0

I noticed these same tests from the adapter-rxjava2 succeed but not without throwing errors:

Feb 26, 2020 7:19:13 PM okhttp3.mockwebserver.MockWebServer$3 execute
INFO: MockWebServer[52498] starting to accept connections
java.lang.IllegalArgumentException: n > 0 required but it was 0
	at io.reactivex.internal.subscriptions.SubscriptionHelper.validate(SubscriptionHelper.java:80)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest$BackpressureLatestSubscriber.request(FlowableOnBackpressureLatest.java:85)
	at retrofit2.adapter.rxjava2.RecordingSubscriber.onSubscribe(RecordingSubscriber.java:45)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest$BackpressureLatestSubscriber.onSubscribe(FlowableOnBackpressureLatest.java:59)
	at io.reactivex.internal.operators.flowable.FlowableFromObservable$SubscriberObserver.onSubscribe(FlowableFromObservable.java:60)
	at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onSubscribe(BodyObservable.java:46)
	at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:38)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at io.reactivex.internal.operators.flowable.FlowableFromObservable.subscribeActual(FlowableFromObservable.java:31)
	at io.reactivex.Flowable.subscribe(Flowable.java:12172)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest.subscribeActual(FlowableOnBackpressureLatest.java:31)
	at io.reactivex.Flowable.subscribe(Flowable.java:12172)
	at retrofit2.adapter.rxjava2.FlowableTest.bodyRespectsBackpressure(FlowableTest.java:84)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
	at retrofit2.adapter.rxjava2.RecordingSubscriber$Rule$1.evaluate(RecordingSubscriber.java:146)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Exception in thread "main" java.lang.IllegalArgumentException: n > 0 required but it was 0
	at io.reactivex.internal.subscriptions.SubscriptionHelper.validate(SubscriptionHelper.java:80)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest$BackpressureLatestSubscriber.request(FlowableOnBackpressureLatest.java:85)
	at retrofit2.adapter.rxjava2.RecordingSubscriber.onSubscribe(RecordingSubscriber.java:45)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest$BackpressureLatestSubscriber.onSubscribe(FlowableOnBackpressureLatest.java:59)
	at io.reactivex.internal.operators.flowable.FlowableFromObservable$SubscriberObserver.onSubscribe(FlowableFromObservable.java:60)
	at retrofit2.adapter.rxjava2.BodyObservable$BodyObserver.onSubscribe(BodyObservable.java:46)
	at retrofit2.adapter.rxjava2.CallExecuteObservable.subscribeActual(CallExecuteObservable.java:38)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at retrofit2.adapter.rxjava2.BodyObservable.subscribeActual(BodyObservable.java:34)
	at io.reactivex.Observable.subscribe(Observable.java:10151)
	at io.reactivex.internal.operators.flowable.FlowableFromObservable.subscribeActual(FlowableFromObservable.java:31)
	at io.reactivex.Flowable.subscribe(Flowable.java:12172)
	at io.reactivex.internal.operators.flowable.FlowableOnBackpressureLatest.subscribeActual(FlowableOnBackpressureLatest.java:31)
	at io.reactivex.Flowable.subscribe(Flowable.java:12172)
	at retrofit2.adapter.rxjava2.FlowableTest.bodyRespectsBackpressure(FlowableTest.java:84)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
	at java.base/java.lang.reflect.Method.invoke(Method.java:567)
	at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
	at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
	at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
	at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
	at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
	at org.junit.rules.ExternalResource$1.evaluate(ExternalResource.java:48)
	at retrofit2.adapter.rxjava2.RecordingSubscriber$Rule$1.evaluate(RecordingSubscriber.java:146)
	at org.junit.rules.RunRules.evaluate(RunRules.java:20)
	at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
	at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
	at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
	at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
	at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
	at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
	at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
	at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
	at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
	at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
	at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
	at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
	at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Feb 26, 2020 7:19:13 PM okhttp3.mockwebserver.MockWebServer$4 processOneRequest
INFO: MockWebServer[52498] received request: GET / HTTP/1.1 and responded: HTTP/1.1 200 OK
Feb 26, 2020 7:19:13 PM okhttp3.mockwebserver.MockWebServer$3 acceptConnections
INFO: MockWebServer[52498] done accepting connections: Interrupted function call: accept failed

provJoshMieczkowski · 2020-02-26T18:28:26Z

I'm looking into atm and I've noticed that in CallExecuteObservable for the rxjava3 adapter, this guy if (disposable.isDisposed()) is returning true which is why the test are failing but if you look at the rxjava2 version, that is returning false and allowing the data to continue.

provJoshMieczkowski · 2020-02-26T19:27:10Z

@mickverm is removing the tests the right solution vs figuring out why CallExecuteObservable is being disposable as soon as we use it?

provJoshMieczkowski · 2020-02-26T23:00:39Z

Doing some more digging, I've noticed that in RecordingSubscriber we are calling subscription.request(initialRequest); with initialRequest = 0. That causes an error to be thrown at StrictSubscriber.request because 0 is not a valid value

In RxJava2, they are using FlowableOnBackpressureLatest which does check for that 0 but doesn't throw an error

provJoshMieczkowski · 2020-02-26T23:24:05Z

Ok, I have found the issue. In Flowable.subscribe if you do not pass in a FlowableSubscriber (the RecordingSubscriber was using just Subscriber), it will default to using a StrictSubscriber which caused the tests to fail.

provJoshMieczkowski · 2020-02-26T23:33:57Z

mickverm#1
@mickverm open a PR on your fork that fixes the tests 👍

mickverm · 2020-02-27T08:12:58Z

mickverm#1
@mickverm open a PR on your fork that fixes the tests 👍

You're right, I've implemented your changes.

provJoshMieczkowski · 2020-04-30T17:46:59Z

Is anyone looking at this guy? Would be awesome if we can merge it in so we can upgrade RxJava :D

adam-hurwitz · 2020-05-09T19:12:57Z

In case anyone is having a hard time finding it, @akarnokd has created a library for the rxjava3-retrofit-adapter as there does not seem to be one yet via io.reactivex. See RxJavaRetrofitAdapter and this StackOverflow post for details.

implementation "com.github.akarnokd:rxjava3-retrofit-adapter:3.0.0"

JakeWharton · 2020-05-20T15:46:38Z

Updated some docs and change the default behavior to async.

provJoshMieczkowski mentioned this pull request Mar 9, 2020

First-party RxJava 3 adapter #3297

Closed

square deleted a comment Mar 16, 2020

JakeWharton force-pushed the rxjava3-adapter branch 2 times, most recently from 26b4f77 to 72a43c5 Compare May 20, 2020 15:29

Added RxJava3 adapter

f68ceb4

JakeWharton force-pushed the rxjava3-adapter branch from 72a43c5 to f68ceb4 Compare May 20, 2020 15:41

JakeWharton merged commit ab1d46d into square:master May 20, 2020

dependabot bot mentioned this pull request Mar 10, 2021

Bump retrofitVersion from 2.3.0 to 2.9.0 meniga/mobile-sdk-android#176

Closed

This was referenced Mar 18, 2021

Bump retrofit from 2.4.0 to 2.9.0 KlubJagiellonski/pola-android#99

Merged

Bump converter-gson from 2.4.0 to 2.9.0 KlubJagiellonski/pola-android#100

Merged

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Added RxJava3 adapter #3315

Added RxJava3 adapter #3315

mickverm commented Feb 24, 2020 •

edited by JakeWharton

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provJoshMieczkowski commented Feb 25, 2020

mickverm commented Feb 26, 2020 •

edited

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provJoshMieczkowski commented Feb 26, 2020 •

edited

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provJoshMieczkowski commented Feb 26, 2020

provJoshMieczkowski commented Feb 26, 2020 •

edited

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provJoshMieczkowski commented Feb 26, 2020

provJoshMieczkowski commented Feb 26, 2020

mickverm commented Feb 27, 2020

provJoshMieczkowski commented Apr 30, 2020

adam-hurwitz commented May 9, 2020 •

edited

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JakeWharton commented May 20, 2020

Added RxJava3 adapter #3315

Added RxJava3 adapter #3315

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mickverm commented Feb 27, 2020

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mickverm commented Feb 24, 2020 •

edited by JakeWharton

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mickverm commented Feb 26, 2020 •

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provJoshMieczkowski commented Feb 26, 2020 •

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adam-hurwitz commented May 9, 2020 •

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