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

["Bob Paulin (JIRA)" <ji...@apache.org>]

Bob Paulin created CAMEL-12782:
----------------------------------

             Summary: 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: 2.22.0, 2.21.2, 2.20.4, 2.18.5
         Environment: Apache Karaf

Apache Camel (Rest DSL with Swagger)
            Reporter: Bob Paulin


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}



--
This message was sent by Atlassian JIRA
(v7.6.3#76005)