I have a mule flow which consists of a scatter gather and a transform message. If the scatter gather fails I would still like to continue to the transform message connector as it has exception handling for what error message should be mapped by Dataweave as well as using the lookup command to call a different flow flow determined on the error encountered.
Is it possible to continue the flow if the scatter gather fails?
Thanks
Create a flow with a catch exception strategy and add a flow ref to that flow. If an error is encountered in that flow the message will proceed to the component after the flow reference.
You can use a filter expression on the payload and call the errorhandler and pass the exception caught in the scatter-gather. In the catch flow add your transformation activity and do whatever processing you wanna do.
Related
Am using JSON destination component to perform DELETE , it is a bit weird that the delete is successful when I saw in UI but am receiving the following error.
[JSON Destination [15]] Error: An error occurred with the following error message:
"System.Exception: Http response body is invalid JSON. (SSIS Productivity Pack, v6.2.0.1468 -
DtsDebugHost, v11.0.7001.0)Newtonsoft.Json.JsonReaderException : Error reading JObject from JsonReader. Path '', line 0, position 0.".
[SSIS.Pipeline] Error: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "JSON Destination" (15)
failed with error code 0xC02090F9 while processing input "Input1 (Merge Join)" (32). The identified component returned an error from the
ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running.
There may be error messages posted before this with more information about the failure.
For the error you are getting above, it seems that the response you get is not in a JSON array, so the component cannot parse the response if you have checked the Response Is Array option in the Output Columns page.
Note that you would only check the Response Is Array option if the HTTP response contains an array with items corresponding to your input rows. If the response does not contain information about each input item, you wouldn’t need to check this option.
In this case, you can try to uncheck the Response Is Array option and enable the HttpBody option in the Output Columns page to verify what value you get from the response body.
Please feel free to reach out to our official support channel if you have any further trouble.
From what I know, exception throwing can be a little heavy. I can see that ServiceStack's Error handling suggests throwing an exception, which gets beautifully serialized to the client side.
1. How can I do the same without throwing the exception? - I see I can change the return type to object and return the HttpError instead of throwing, is this the only way?
2. Will performance improve (vs throwing)?
Returning or throwing a HttpError has the same effect, e.g:
return new HttpError(HttpStatusCode.Conflict, "SomeErrorCode");
I'm using BlazeDS to connect my Flex front end to my Java backend, and was wondering if there is any way I can get the complete stack trace in case of an exception to be passed to the front end. When I set a break point in the exception handler in Flex, I just see a basic message, fault string etc.
Would appreciate any help.
Thanks!
You could create a custom exception; then catch all serverside exceptions at highest level and rethrow your custom exception with the stacktrace of the original exception as a property. You should be able to access this clientside.
Also, if you're using Spring on the server side, the Spring BlazeDS integration can translate server-side exceptions into cleaner client-side ones using exception translators.
I have a filter that is filtering for some actions. In case this is a required action I need to render it and see its response (json). how could I invoke it and see if the response contains errors?
Thanks,
Have you tried the afterView?
afterView - Executed after view rendering. Takes an Exception as an
argument which will be non-null if an exception occurs during
processing. Note: this Closure is called before the layout is applied
More on the docs.
When I read a message with a WSO2 ESB Proxy, I need to define a specific datatype and this is then applying a certain MessageBuilder (defined in the axis2.xml).
But when the MessageBuilder fails (i.e. I try to read a text file with the XMLBuilder) I get an exception in the console, but my "faultSequence" is not called. But I need to do a certain Error Handling in case of any read problem.
How can I catch Exceptions from the Transport Layer (MessageBuilder) in a Proxy?
As far as i understand , your requirement is to catch an Error in the Transport layer and handle that in the Application level (i.e : Mediation level). which means the layer above.
But i think it violates layered architecture of the messaging framework. You should catch the Exception at the Message Builder itself and throw an Axis Fault so that underlying synapse transport layer (in this case Axis2) will handle that error. (It will send a fault to the client.)
If we look at the TCP protocol stack that is the practice which is commonly used.
If you really want to filter this errors at mediation level. Catch that Error in the Message Builder and add a Message Context property or custom message and pass it as a successful message. And Do a filter in mediation level and handle.
But again that is ugly.
:)
--Charith
Have you defined onError attribute in your configuration?
<sequence name="main" onError="myFaultSequence">
You can have more information in this sample.