[jira] [Resolved] (CAMEL-15200) Processor setBody ends up in bodyType: null

["Claus Ibsen (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CAMEL-15200?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen resolved CAMEL-15200.
---------------------------------
    Resolution: Not A Bug

> Processor setBody ends up in bodyType: null
> -------------------------------------------
>
>                 Key: CAMEL-15200
>                 URL: https://issues.apache.org/jira/browse/CAMEL-15200
>             Project: Camel
>          Issue Type: Bug
>          Components: came-core
>    Affects Versions: 3.3.0
>         Environment: Java 11
> Camel 3.3.0
>            Reporter: Yasser Zamani
>            Priority: Minor
>             Fix For: 3.x
>
>
> h1. Issue
> *NOTE:* I will try to come back with a fixing PR ASAP.
>   
>  The processor
> {code:java}
> package com.company.processors;
> import com.company.api.model.Error;
> import org.apache.camel.Exchange;
> import org.apache.camel.Processor;
> public class ToError implements Processor {
>     @Override
>     public void process(Exchange exchange) {
>         Throwable responseException = exchange.getProperty(Exchange.EXCEPTION_CAUGHT, Throwable.class);
>         Error response = new Error() {{
>             setMessage(responseException.getMessage());
>             setDetails(responseException.getCause().getMessage());
>         }};
>         exchange.getIn().setBody(response);
>     }
> }
> {code}
> with the route
> {code:java}
> .doCatch(Exception.class)
> 	.process(new ToError())
> 	.to("log:error")
> {code}
> ends up in
> {noformat}2020-06-17 10:39:03.299  INFO 2928 --- [ult-workqueue-2] error                                    : Exchange[ExchangePattern: InOut, BodyType: null, Body: class Error {
>     message: Connection reset
>     details: null
> }]{noformat}
> where ??BodyType: null?? causes consequent problems e.g. the route
> {code:java}
> .end()
> .transform().body().marshal().json(JsonLibrary.Gson).endRest();
> {code}
> returns a {{ResponseEntity}} with no body.
> h1. Reason
> It took one day to find the villain :) The reason was that Java instance initialization via setters inside `{{}}`s :(
> h1. Workaround
> Replacing
> {code:java}
> Error response = new Error() {{
>     setMessage(responseException.getMessage());
>     setDetails(responseException.getCause().getMessage());
> }};
> {code}
> with
> {code:java}
> Error response = new Error();
> response.setMessage(responseException.getMessage());
> response.setDetails(responseException.getCause().getMessage());
> {code}
> fixes issue.



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