[jira] [Closed] (CXF-8179) JSON Jackson does not handle resource returning CompletionStage

["Colm O hEigeartaigh (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CXF-8179?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Colm O hEigeartaigh closed CXF-8179.
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> JSON Jackson does not handle resource returning CompletionStage<X>
> ------------------------------------------------------------------
>
>                 Key: CXF-8179
>                 URL: https://issues.apache.org/jira/browse/CXF-8179
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.2.11, 3.3.4
>            Reporter: Baptiste AIGLIN
>            Assignee: Andriy Redko
>            Priority: Major
>             Fix For: 3.4.0, 3.3.5, 3.2.12
>
>         Attachments: cxf-mp-reproducer.zip, exception.txt
>
>
> Hello,
>  
> While testing to integrate the CXF Microprofile implementation in order to perform asynchronous client calls using client proxies, I encounter the Exception raised by the json provider due to the returned generic type being CompletionStage.
>  
> It is clear that MicroProfileClientProxyImpl#getReturnType(Method, Message) is behaving correctly regarding the returnType, however inside the ClientProxyImpl#handleResponse(Message, Class<?>) we also compute the genericType based on the method.getGenericReturnType() which is of type CompletionStage, therefore the provider is not able to deserialize the String correctly as internally it uses the genericType.
> Do you think it could be possible to update the InjectionUtils.processGenericTypeIfNeeded  to add cases for CompletionStage in order to change the genericType returned in this case ?
>  
>  



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