[CAMEL-4781] Improving NoTypeConversionAvailableException message with cause

• Type: Improvement
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.7.5, 2.8.4, 2.9.0
• Component/s: camel-core
• Estimated Complexity: Unknown
• Assignee: Willem Jiang
• Reporter: Willem Jiang
• Created: 15/Dec/11 07:00
• Updated: 17/Dec/11 08:58
• Resolved: 15/Dec/11 08:24

Description

The NoTypeConversionAvailableException message is misleading when it is caused by other exception.
It just eats up the cause message and let us think there is no converter which can turn an InputStream
into a Dom from theThe below exception stack trace.

org.apache.camel.InvalidPayloadException: No body available of type: org.w3c.dom.Document but has value: sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@4c4571c5 of 
type: sun.net.www.protocol.http.HttpURLConnection.HttpInputStream on: Message: [Body is instance of java.io.InputStream]. Caused by: No type converter available to convert from type: 
sun.net.www.protocol.http.HttpURLConnection.HttpInputStream to the required type: org.w3c.dom.Document with value 
sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@4c4571c5. Exchange[Message: [Body is instance of java.io.InputStream]]. Caused by: 
[org.apache.camel.NoTypeConversionAvailableException - No type converter available to convert from type: sun.net.www.protocol.http.HttpURLConnection.HttpInputStream to the required 
type: org.w3c.dom.Document with value sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@4c4571c5]
	at org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:102)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.ConvertBodyProcessor.process(ConvertBodyProcessor.java:58)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.impl.converter.AsyncProcessorTypeConverter$ProcessorToAsyncProcessorBridge.process(AsyncProcessorTypeConverter.java:50)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.management.InstrumentationProcessor.process(InstrumentationProcessor.java:69)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.interceptor.TraceInterceptor.process(TraceInterceptor.java:171)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.processNext(DelegateAsyncProcessor.java:98)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DelegateAsyncProcessor.process(DelegateAsyncProcessor.java:89)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.fabric.FabricTraceProcessor.process(FabricTraceProcessor.java:59)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.RedeliveryErrorHandler.processErrorHandler(RedeliveryErrorHandler.java:318)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.RedeliveryErrorHandler.process(RedeliveryErrorHandler.java:209)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DefaultChannel.process(DefaultChannel.java:306)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.util.AsyncProcessorHelper.process(AsyncProcessorHelper.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.Pipeline.process(Pipeline.java:116)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.Pipeline.access$100(Pipeline.java:42)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.Pipeline$1.done(Pipeline.java:134)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.DefaultChannel$1.done(DefaultChannel.java:317)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.RedeliveryErrorHandler$1.done(RedeliveryErrorHandler.java:330)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.interceptor.TraceInterceptor$1.done(TraceInterceptor.java:188)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.management.InstrumentationProcessor$1.done(InstrumentationProcessor.java:78)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.impl.ProducerCache$1.done(ProducerCache.java:307)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.processor.SendProcessor$2$1.done(SendProcessor.java:119)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.component.cxf.CxfClientCallback.handleResponse(CxfClientCallback.java:62)[143:org.apache.camel.camel-cxf:2.8.0.fuse-01-13]
	at org.apache.cxf.endpoint.ClientImpl.onMessage(ClientImpl.java:818)[133:org.apache.cxf.bundle:2.4.3.fuse-00-13]
	at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream.handleResponseInternal(HTTPConduit.java:1626)[133:org.apache.cxf.bundle:2.4.3.fuse-00-13]
	at org.apache.cxf.transport.http.HTTPConduit$WrappedOutputStream$1.run(HTTPConduit.java:1498)[133:org.apache.cxf.bundle:2.4.3.fuse-00-13]
	at org.apache.cxf.workqueue.AutomaticWorkQueueImpl$2.run(AutomaticWorkQueueImpl.java:353)[133:org.apache.cxf.bundle:2.4.3.fuse-00-13]
	at java.util.concurrent.ThreadPoolExecutor$Worker.runTask(ThreadPoolExecutor.java:886)[:1.6.0_23]
	at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:908)[:1.6.0_23]
	at java.lang.Thread.run(Thread.java:662)[:1.6.0_23]
Caused by: org.apache.camel.NoTypeConversionAvailableException: No type converter available to convert from type: sun.net.www.protocol.http.HttpURLConnection.HttpInputStream to the 
required type: org.w3c.dom.Document with value sun.net.www.protocol.http.HttpURLConnection$HttpInputStream@4c4571c5
	at org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:140)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.core.osgi.OsgiTypeConverter.mandatoryConvertTo(OsgiTypeConverter.java:110)[91:org.apache.camel.camel-spring:2.8.0.fuse-01-13]
	at org.apache.camel.impl.MessageSupport.getMandatoryBody(MessageSupport.java:100)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	... 36 more
Caused by: org.apache.camel.RuntimeCamelException: org.xml.sax.SAXParseException: Premature end of file.
	at org.apache.camel.util.ObjectHelper.invokeMethod(ObjectHelper.java:832)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.impl.converter.InstanceMethodTypeConverter.convertTo(InstanceMethodTypeConverter.java:69)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.impl.converter.BaseTypeConverterRegistry.doConvertTo(BaseTypeConverterRegistry.java:182)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	at org.apache.camel.impl.converter.BaseTypeConverterRegistry.mandatoryConvertTo(BaseTypeConverterRegistry.java:138)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	... 38 more
Caused by: org.xml.sax.SAXParseException: Premature end of file.
	at org.apache.xerces.parsers.DOMParser.parse(Unknown Source)[:]
	at org.apache.xerces.jaxp.DocumentBuilderImpl.parse(Unknown Source)[:]
	at javax.xml.parsers.DocumentBuilder.parse(DocumentBuilder.java:110)[:]
	at org.apache.camel.converter.jaxp.XmlConverter.toDOMDocument(XmlConverter.java:733)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)[:1.6.0_23]
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)[:1.6.0_23]
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)[:1.6.0_23]
	at java.lang.reflect.Method.invoke(Method.java:597)[:1.6.0_23]
	at org.apache.camel.util.ObjectHelper.invokeMethod(ObjectHelper.java:828)[89:org.apache.camel.camel-core:2.8.0.fuse-01-13]
	... 41 more