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From "Alfred Hiebl (Created) (JIRA)" <>
Subject [jira] [Created] (CAMEL-4636) Tracing of exceptions
Date Mon, 07 Nov 2011 11:21:51 GMT
Tracing of exceptions

                 Key: CAMEL-4636
             Project: Camel
          Issue Type: Improvement
          Components: camel-core
    Affects Versions: 2.6.0
            Reporter: Alfred Hiebl

When a bean in a traced route throws an exception (e.g. NullPointerException) one would expect
to see that in the causedByException property of the DefaultTraceEventMessage. But the exception
is null.

The reason is that in DefaultTraceEventMessage the causedByException is set to exchange.getException(),
at a time where it is already handled. The exception is still available as property Exchange.EXCEPTION_CAUGHT.

Suggestion for change:

public DefaultTraceEventMessage(final Date timestamp, final ProcessorDefinition<?> toNode,
final Exchange exchange) {
        this.tracedExchange = exchange;
        this.causedByException = exchange.getException() != null ? exchange.getException().toString()
				: extractExceptionCaught(exchange);
// used to set causedByException in cases where the exception is already handled 
private static String extractExceptionCaught(Exchange exchange) {
 	Exception exceptionCaught = (Exception) exchange.getProperty(Exchange.EXCEPTION_CAUGHT);
 	return (exceptionCaught != null ? exceptionCaught.toString() : null);

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