Quarkus Kotlin Native Reactive REST Client not working properly

[arolfes]

Describe the bug

Hello Quarkus developers,

I wanna make a POST call with the reative REST Client. In JVM Mode everything works as expected. In native mode the POST Body is empty.

I created a simple project to reporduce the issue. https://github.com/arolfes/quarkus-kotlin-reactive-rest-client

I can not say if I use Kotlin the wrong way or the reactive rest client the wrong way.

Everything (JVM and native Mode) is working with the "old" rest client

Thanks in advance for helping me.

Expected behavior

The body of the REST Call is not empty

Log Messages from the JVM Mode Test

2022-12-27 10:08:48,806 INFO  [com.git.GreetingResource] (executor-thread-0) firstName=Foo, lastName=Bar
2022-12-27 10:08:48,806 INFO  [com.git.GreetingResource] (executor-thread-0) greetingModel=GreetingModel(firstName=Foo, lastName=Bar)
2022-12-27 10:08:48,907 DEBUG [org.jbo.res.rea.cli.log.DefaultClientLogger] (vert.x-eventloop-thread-0) Request: POST http://localhost:8080/greeting Headers[Accept=application/json Content-Type=application/json User-Agent=Resteasy Reactive Client content-length=36], Body:
{"firstName":"Foo","lastName":"Bar"}

Actual behavior

I added Request Response Logging and Some logging infos to the object I wanna send.

Log Message from native Mode test

2022-12-27 10:08:51,769 INFO  [com.git.GreetingResource] (executor-thread-0) firstName=Foo, lastName=Bar
2022-12-27 10:08:51,769 INFO  [com.git.GreetingResource] (executor-thread-0) greetingModel=GreetingModel(firstName=Foo, lastName=Bar)
2022-12-27 10:08:51,770 DEBUG [org.jbo.res.rea.cli.log.DefaultClientLogger] (vert.x-eventloop-thread-1) Request: POST http://localhost:8080/greeting Headers[Accept=application/json Content-Type=application/json User-Agent=Resteasy Reactive Client content-length=2], Body:
{}

How to Reproduce?

clone the github repo https://github.com/arolfes/quarkus-kotlin-reactive-rest-client
execute the native mode test

Output of uname -a or ver

Linux fedora 6.0.15-300.fc37.x86_64 #1 SMP PREEMPT_DYNAMIC Wed Dec 21 18:33:23 UTC 2022 x86_64 x86_64 x86_64 GNU/Linux

Output of java -version

OpenJDK 64-Bit Server VM GraalVM CE 22.3.0 (build 17.0.5+8-jvmci-22.3-b08, mixed mode, sharing)

GraalVM version (if different from Java)

No response

Quarkus version or git rev

2.15.1

Build tool (ie. output of mvnw --version or gradlew --version)

Gradle 7.5.1

Additional information

No response

[quarkus-bot]

/cc @Sgitario(rest-client), @cescoffier(rest-client), @evanchooly(kotlin), @geoand(kotlin,rest-client)

[geoand]

A workaround is to add @RegisterForReflection to your GreetingModel although I am going to see if Quarkus can do that automatically.

[arolfes]

Hello @geoand ,

thank you for the reply. The workaround is totally sufficient for me. Now it's working as expected.

[geoand]

#30132 should make the workaround redundant