How to test for errors on a Task in Application Integration

[shaaland]

UPDATE:  We have a feature called Error Catcher which will give you many more options for handling errors that the one use case I describe here in this post.  Please check out the Error Catcher first! 

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Here is a summary for how to test for errors that may have happened on a task in Application integration.

Summary:

• Create a local variable called ErrorMessage of type String
• Set the Retry on Failure to "Ignore" for sync execution for the task you want to check
• Add this condition on the Edge after the task for the Error edge:   exists($ErrorMessage$)
• Add this condition on the Edge after the task for the Success edge:   NOT exists($ErrorMessage$)

Here is a screenshot of a simple example Integration showing how you can branch after a Data Mapper task to a Success or Error edge condition:

This is the ErrorMessage local string variable that I created

And, here are the edge conditions for the Error and Success edges:

For this integration, I tested with a simple string array as an input to the API Trigger.  If I send in 2 elements, the data mapper fails because it is doing a mapping rule that references the third element, which routes to the Error edge condition. If I send in 3 elements, then it executes successfully and follows the success edge condition.  Here is the mapping rule referencing the 3rd element : string_array.GET ("2") since indexes are zero based:

Here is the test input for the failure condition that only has 2 elements in the string_array

Here is a successful Test input with 3 elements.

[almartin]

Hi, I have a use case where I retry on a task 3 times when it fails - is there anyway I can handle the error after the task has been tried and failed 3 times rather than it failing?

[Former Community Member]

At this point we don't have the ability to execute logic after the set number of retries have completed and the integration has still not succeeded. This is on the roadmap.

[kishorehl-c]

Is this implemented now?

[pramodvallanur]

Pls check this: https://cloud.google.com/application-integration/docs/configure-error-catcher-trigger. You should be able to handle errors using this new feature and execute set of tasks...

[StuartLayton]

Hi Shaaland
is it possible to turn the $ErrorMessage$ into a JSON variable?
I have the following returning in the error message and I only really need the "message" part:

'HTTP Response Errors: 400 Bad Request x-mashery-message-id: 3f403125-551d-43fb-9e19-cc735857d05a x-mashery-responder: 50-rt10 strict-transport-security: max-age=15552000; includeSubDomains; preload Content-Security-Policy: upgrade-insecure-requests x-xss-protection: 1; mode=block x-frame-options: DENY x-content-type-options: nosniff cache-control: no-cache, must-revalidate, max-age=0, no-store, private Referrer-Policy: strict-origin-when-cross-origin Vary: Origin, X-HTTP-Method-Override Content-Length: 164 Content-Type: application/json; charset=UTF-8 Date: Tue, 22 Aug 2023 14:05:06 GMT Connection: keep-alive Keep-Alive: timeout=5

{"message":"The event data contains duplicate value for an existing primary key. Please correct the event data and try again.","errorcode":30000,"documentation":""}'

[deepgoel]

Hi StuartLayton, 

Yeah, It's possible to get the $ErrorMessage$ into a JSON variable. To do this you firstly need to set the `Error handling strategy` for ignore for your respect mode of execution i.e. `Sync` or `Async`. As shown below in the screenshot. And create a local variable with the `ErrorMessage` name as mentioned in the post. 
 

Then you can use data mapping task/JS task/ Data Transformer task on the ErrorMessage Variable to convert the value to JSON format. 
Based on you sample text. We can use a Data mapping task. Firstly, you can use a SPLIT function on the newline and then can get the JSON object in string use GET. Then use TO_JSON to convert the string into the JSON variable. 

I hope this helps with your query.

[dan_j_r]

I've got a similar format error message to StuartLayton but I'm struggling to get the Split() function to work on the newline.

Any hints would be welcome.

Thanks

[deepgoel]

Hi, 

You can use `Enter`/`Return` key on your keyboard to split via newline. 

[StuartLayton]

Hi Dan

I had to split my ErrorMessage at the { curly bracket then do a load of giggery to get it back into a decent format. It might help you?

See Below:

The output I get is this: