[jira] [Updated] (CAMEL-12782) swagger-java - Provide more clear exception when model class is not visible to ClassResolver

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

     [ https://issues.apache.org/jira/browse/CAMEL-12782?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Claus Ibsen updated CAMEL-12782:
--------------------------------
    Fix Version/s: 2.23.0
                   2.22.2
                   2.21.3

> swagger-java - Provide more clear exception when model class is not visible to ClassResolver
> --------------------------------------------------------------------------------------------
>
>                 Key: CAMEL-12782
>                 URL: https://issues.apache.org/jira/browse/CAMEL-12782
>             Project: Camel
>          Issue Type: Bug
>          Components: camel-swagger
>    Affects Versions: 2.18.5, 2.20.4, 2.21.2, 2.22.0
>         Environment: Apache Karaf
> Apache Camel (Rest DSL with Swagger)
>            Reporter: Bob Paulin
>            Priority: Minor
>             Fix For: 2.21.3, 2.22.2, 2.23.0
>
>
> Within an OSGi the camel-swagger-java component be run within a different bundle than the routes and models required to generate the swagger document.  In this case the swagger code may not be able to read the model.  Currently this generates a Nullpointer Exception and the swagger document does not get rendered. 
> Would prefer that the exception be more specific to help developers with debugging.  Also toyed with the idea of converting to a LOG statement instead of an exception but it may be better to fail fast.
>  
> {code:java}
> org.apache.camel.camel-swagger-java - 2.22.0 | Error rendering Swagger API due null
> java.lang.NullPointerException: null
>     at org.apache.camel.swagger.RestModelConverters.readClass(RestModelConverters.java:32) ~[108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.swagger.RestSwaggerReader.appendModels(RestSwaggerReader.java:755) ~[108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.swagger.RestSwaggerReader.parse(RestSwaggerReader.java:227) ~[108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.swagger.RestSwaggerReader.read(RestSwaggerReader.java:113) ~[108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.swagger.RestSwaggerSupport.renderResourceListing(RestSwaggerSupport.java:210) ~[108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.swagger.RestSwaggerProcessor.process(RestSwaggerProcessor.java:119) [108:org.apache.camel.camel-swagger-java:2.22.0]
>     at org.apache.camel.component.rest.RestApiProducer.process(RestApiProducer.java:36) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.util.AsyncProcessorConverterHelper$ProcessorToAsyncProcessorBridge.process(AsyncProcessorConverterHelper.java:61) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.SendProcessor.process(SendProcessor.java:148) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:181) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:110) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:548) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.processor.CamelInternalProcessor.process(CamelInternalProcessor.java:201) [89:org.apache.camel.camel-core:2.22.0]
>     at org.apache.camel.component.netty4.handlers.ServerChannelHandler.processAsynchronously(ServerChannelHandler.java:141) [105:org.apache.camel.camel-netty4:2.22.0]
>     at org.apache.camel.component.netty4.handlers.ServerChannelHandler.channelRead0(ServerChannelHandler.java:112) [105:org.apache.camel.camel-netty4:2.22.0]
>     at org.apache.camel.component.netty4.http.handlers.HttpServerChannelHandler.channelRead0(HttpServerChannelHandler.java:213) [106:org.apache.camel.camel-netty4-http:2.22.0]
>     at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [55:io.netty.transport:4.1.25.Final]
>     at org.apache.camel.component.netty4.http.handlers.HttpServerMultiplexChannelHandler.channelRead0(HttpServerMultiplexChannelHandler.java:113) [106:org.apache.camel.camel-netty4-http:2.22.0]
>     at io.netty.channel.SimpleChannelInboundHandler.channelRead(SimpleChannelInboundHandler.java:105) [55:io.netty.transport:4.1.25.Final]
>     at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:362) [55:io.netty.transport:4.1.25.Final]
>     at io.netty.channel.AbstractChannelHandlerContext.access$600(AbstractChannelHandlerContext.java:38) [55:io.netty.transport:4.1.25.Final]
>     at io.netty.channel.AbstractChannelHandlerContext$7.run(AbstractChannelHandlerContext.java:353) [55:io.netty.transport:4.1.25.Final]
>     at io.netty.util.concurrent.DefaultEventExecutor.run(DefaultEventExecutor.java:66) [51:io.netty.common:4.1.25.Final]
>     at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:884) [51:io.netty.common:4.1.25.Final]
>     at java.lang.Thread.run(Thread.java:748) [?:?]{code}



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