Sounds good. Nice work ! A few questions: * How are the errorHandler and errorHandlerConfig related ? * If I want to handle a given exception specifically, i guess I need to implement a custom errorHandler, right ? * how does the errorHandler plug into the jbi container ?
If you want to donate this code, feel free to raise a JIRA issue and attach the code. I think it would be a nice addition. On 10/5/06, Ralf Wunsch <[EMAIL PROTECTED]> wrote:
Ralf Wunsch wrote: > > > We are starting a new EAI project. At this time ServiceMix is our choice > for the implementation plattform. We have strong requirements for > monitoring and control issues. At this one aspect is the handling of > unexpected errors. For this reason i have implemented the following error > handler solution. > > > > The error handling solution delegates errors or faults detected in > analysis of the MessageExchange objects to an ErrorHandler implemented as > XBean. This bean is used by an ErrorHandlerComponent (a JBI component > embedded in the flow) or by the JBIContainer (the centralized way) or > both. > > http://www.nabble.com/file/290/error-handler-embedding.png > > The ErrorHandler can cancel transactions and stop the container or the > source component (all cofigurable). Furthermore it's possible to route the > error or fault messages and the actuating message to a configurable > target. In this case ist possible to embed one or more > ErrorHandlerComponents into the flow. > > http://www.nabble.com/file/291/error-handler-flow.png > > Such an ambedded ErrorHandlerComponent borrowed by the EIP WireTap ensures > that the rerouted message from the source will be in a well know format > (the centralised approach can't accomplish this). The embedded and the > centralized approach can be used in combination. For synchronization the > ErrorHandlerComponent sets a Property on the outgoing MessageExchange and > the ErrorEventListener does nothing as long as this property can be found > in the MessageEchange which signals a fault or an error. > > > A sample configuration... > > > <bean id="errorHandler" > class="de.eval.eai.error.DefaultErrorHandler"> > </bean> > ... > <bean id="errorHandlerConfig" > class="de.eval.eai.error.ErrorHandlerConfig"> > <property name="shutdownOnFault" value="true" /> > <property name="rollbackOnFault" value="false" /> > </bean> > ... > <test:container id="jbi" > useMBeanServer="true" > createMBeanServer="false" > dumpStats="true" > statsInterval="10" > errorHandler="#errorHandler" > errorHandlerConfig="#errorHandlerConfig"> > ... > <sm:activationSpecs> > ... > <sm:activationSpec componentName="errorHandler"> > <sm:component> > <eai:component> > <eai:endpoints> > <eai:errorHandler service="errorHandler" > endpoint="endpoint"> > <eai:target> > <eai:exchange-target service="transformer" /> > </eai:target> > <eai:disqualifyTarget> > <eai:exchange-target service="failedQueue" /> > </eai:disqualifyTarget> > <eai:errorTarget> > <eai:exchange-target service="errorQueue" /> > </eai:errorTarget> > <eai:faultTarget> > <eai:exchange-target service="faultQueue" /> > </eai:faultTarget> > <property name="shutdownOnFault" value="true" /> > <property name="rollbackOnFault" value="false" /> > </eai:errorHandler> > </eai:endpoints> > </eai:component> > </sm:component> > </sm:activationSpec> > ... > > > Two questions: > > > Ist this a accurate ServieMix way (in accordance with the ideas of > ServiceMix)? > > > Is it on behalf of the project or the communitiy to reuse this solution? > > > Thanks, > Ralf Wunsch > > -- View this message in context: http://www.nabble.com/Declarative-Exception-Handling-in-ServiceMix-tf2161788.html#a6658179 Sent from the ServiceMix - Dev mailing list archive at Nabble.com.
-- Cheers, Guillaume Nodet
