[jboss-jira] [JBoss JIRA] (WFLY-11907) NPE trying to use Resteasy Client inside CDI Async Event

[Matej Novotny (Jira)]

    [ https://issues.jboss.org/browse/WFLY-11907?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13713417#comment-13713417 ] 

Matej Novotny edited comment on WFLY-11907 at 3/26/19 10:52 AM:
----------------------------------------------------------------

[~mkopecky] what exactly does RestEasy expect from CDI in {{ResteasyClientBuilder.newBuilder().build();}}?
Because doing events in async manner means that a different thread pool will be used and with that comes a "loss of context" since contexts are mostly thread bound.
CDI will [activate request scope during the asynchronous notification of observer|http://docs.jboss.org/cdi/spec/2.0/cdi-spec.html#request_context] (meaning you won't get context not active exception), however, the state of the context is *not* preserved (no context propagation). Any request scoped beans will be created anew.


was (Author: manovotn):
[~mkopecky] what exactly does RestEasy expect from CDI in {{ResteasyClientBuilder.newBuilder().build();}}?
Because doing events in async manner means that a different thread pool will be used and with that comes a "loss of context" since contexts are mostly thread bound.
CDI will activate request scope during the asynchronous notification of observer (meaning you won't get context not active exception), however, the state of the context is *not* preserved (no context propagation). Any request scoped beans will be created anew.

> NPE trying to use Resteasy Client inside CDI Async Event
> --------------------------------------------------------
>
>                 Key: WFLY-11907
>                 URL: https://issues.jboss.org/browse/WFLY-11907
>             Project: WildFly
>          Issue Type: Bug
>          Components: CDI / Weld, REST
>    Affects Versions: 14.0.0.Final, 16.0.0.Final
>            Reporter: Cody Lerum
>            Assignee: Matej Novotny
>            Priority: Major
>
> When attempting to use the Resteasy Client inside a CDI Async Event a NPE is thrown.
> {code}
> 12:49:33,513 ERROR [stderr] (Weld Thread Pool -- 4) java.lang.RuntimeException: java.lang.NullPointerException
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.plugins.providers.RegisterBuiltin.register(RegisterBuiltin.java:49)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder.getProviderFactory(ResteasyClientBuilder.java:362)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder.build(ResteasyClientBuilder.java:395)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.client.jaxrs.ResteasyClientBuilder.build(ResteasyClientBuilder.java:38)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at com.outjected.demo.ResteasyClientEventObserver.load(ResteasyClientEventObserver.java:28)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at com.outjected.demo.ResteasyClientEventObserver.observeAsync(ResteasyClientEventObserver.java:23)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> 12:49:33,514 ERROR [stderr] (Weld Thread Pool -- 4) 	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.lang.reflect.Method.invoke(Method.java:498)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:95)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.injection.StaticMethodInjectionPoint.invoke(StaticMethodInjectionPoint.java:85)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.injection.MethodInvocationStrategy$DefaultMethodInvocationStrategy.invoke(MethodInvocationStrategy.java:109)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:330)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverMethodImpl.sendEvent(ObserverMethodImpl.java:308)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverMethodImpl.notify(ObserverMethodImpl.java:286)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at javax.enterprise.inject.spi.ObserverMethod.notify(ObserverMethod.java:124)
> 12:49:33,515 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.util.Observers.notify(Observers.java:166)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverNotifier.notifyAsyncObserver(ObserverNotifier.java:413)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverNotifier.lambda$notifyAsyncObservers$5(ObserverNotifier.java:356)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverNotifier.lambda$null$8(ObserverNotifier.java:438)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.security.spi.SecurityServices.lambda$getSecurityContextAssociator$0(SecurityServices.java:80)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.weld.event.ObserverNotifier.lambda$createSupplier$9(ObserverNotifier.java:435)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.util.concurrent.CompletableFuture$AsyncSupply.run$$$capture(CompletableFuture.java:1590)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.util.concurrent.CompletableFuture$AsyncSupply.run(CompletableFuture.java)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
> 12:49:33,516 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) 	at java.lang.Thread.run(Thread.java:748)
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.threads.JBossThread.run(JBossThread.java:485)
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) Caused by: java.lang.NullPointerException
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.plugins.providers.RegisterBuiltin.registerProviders(RegisterBuiltin.java:60)
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) 	at org.jboss.resteasy.plugins.providers.RegisterBuiltin.register(RegisterBuiltin.java:45)
> 12:49:33,517 ERROR [stderr] (Weld Thread Pool -- 4) 	... 28 more
> {code}



--
This message was sent by Atlassian Jira
(v7.12.1#712002)