Wildfly 33.0.0.Final: Can't use org.jboss.resteasy:resteasy-rxjava2

nicolas duminil

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Sep 3, 2024, 10:41:23 AM9/3/24

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Hello,

I need to deploy some RESTeasy services which use RxJava2 API. I'm then using the following maven dependencies (among others):

    <dependency>
      <groupId>org.jboss.resteasy</groupId>
      <artifactId>resteasy-rxjava2</artifactId>
      <version>${resteasy.version}</version>
      <scope>provided</scope>
    </dependency>
    <dependency>
      <groupId>io.reactivex.rxjava2</groupId>
      <artifactId>rxjava</artifactId>
      <version>2.2.21</version>
    </dependency>

However, the code using classes like `FlowableRxInvokerProvider` or

`FlowableRxInvoker` doesn't compile as they aren't resolved. Not sure what's the problem with this artifact as, looking inside, I can see that the referred classes exist.

Could anyone please let me know what might the problem here ?

James Perkins

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Sep 3, 2024, 11:24:47 AM9/3/24

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The io.reactivex.rxjava2:rxjava should be marked as <scope>provided</scope>. You need to add a global dependency or use a jboss-deployment-structure.xml to add a dependency to org.jboss.resteasy.resteasy-rxjava2.

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nicolas duminil

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Sep 3, 2024, 4:51:06 PM9/3/24

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Nope, setting at provided the scope of io.reactivex.rxjava2:rxjava raises the following exception:

3391 INFO [docker-java-stream-1563602434] fr.simplex_software.react.rxjava2.test.TimeZoneStreamResourceIT

- STDOUT: 22:15:21,876 ERROR [org.jboss.msc.service.fail] (ServerService Thread Pool -- 16) MSC000001: Failed to start service jboss.deployment.unit."ROOT.war".undertow-deployment: org.jboss.msc.service.StartException in service jboss.deployment.unit."ROOT.war".undertow-deployment: java.lang.NoClassDefFoundError: io/reactivex/Flowable

3391 INFO [docker-java-stream-1563602434] fr.simplex_software.react.rxjava2.test.TimeZoneStreamResourceIT

- STDOUT: at org.wildfly.ext...@33.0.0.Final//org.wildfly.extension.undertow.deployment.UndertowDeploymentService$1.run(UndertowDeploymentService.java:73)

3391 INFO [docker-java-stream-1563602434] fr.simplex_software.react.rxjava2.test.TimeZoneStreamResourceIT

- STDOUT: at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)

3391 INFO [docker-java-stream-1563602434] fr.simplex_software.react.rxjava2.test.TimeZoneStreamResourceIT

- STDOUT: at java.base/java.util.concurrent.FutureTask.run(Unknown Source)