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From "Sergey Beryozkin (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CXF-7119) ResponseExceptionMapper not used for technical exceptions (e.g. IOException)
Date Wed, 09 Nov 2016 17:46:59 GMT

    [ https://issues.apache.org/jira/browse/CXF-7119?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15651554#comment-15651554
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Sergey Beryozkin commented on CXF-7119:
---------------------------------------

Can you please get back to me and explain why catching ProcessingException and get its IOException
cause is not ideal in your case ? The only other alternative that I can see is to return a
custom RuntimeException instead - is it what you are after ?

> ResponseExceptionMapper not used for technical exceptions (e.g. IOException)
> ----------------------------------------------------------------------------
>
>                 Key: CXF-7119
>                 URL: https://issues.apache.org/jira/browse/CXF-7119
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>    Affects Versions: 3.1.3
>            Reporter: Jörg Hohwiller
>
> When using CXF for REST/JAX-RS service clients I quickly noticed that I need to tweak
the error handling. My services use an ExceptionMapper that provides error details via JSON
result payload. Hence I want to access this and render an exception with further details and
more context information what works fine with ResponseExceptionMapper. 
> However, when a technical error (IOException such as unkown host, connection refused,
timeout, etc.) occurrs I only get generic errors from CXF client (org.apache.cxf.interceptor.Fault:
Could not send Message.). This is undesired but unfortunately my custom ResponseExceptionMapper
is never called for such technical errors. There seems to be no way to archive my goal with
CXF itself. I could only wrap the client again with a custom written dynamic proxy to reach
my goal.
> It seems that CXF hardwires this behaviour:
> https://github.com/apache/cxf/blob/master/rt/rs/client/src/main/java/org/apache/cxf/jaxrs/client/AbstractClient.java#L596
> https://github.com/apache/cxf/blob/master/core/src/main/java/org/apache/cxf/interceptor/MessageSenderInterceptor.java#L64
> It would be awesome if in such case ResponseExceptionMapper would also be applied so
I have the chance to interfere and produce better exceptions (e.g. with a message containing
the name of the application/microservice that could not be called, the URL, etc.) for my individual
needs.



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