Fetching Details from temporal NonRetryableApplicationError

Community Support
1

In one of my temporal activities, I am returning a

return temporal.NewNonRetryableApplicationError("message", "Failed", errFoo,"HelloDetails"))

In my workflow which calls the activity, I query the application Error returned as below,

var appErr *temporal.ApplicationError
if errors.As(err, &appErr) {
	fmt.Println("Has data", appErr.HasDetails()) -> returns false
	if err = appErr.Details(&Details); err != nil {
		fmt.Println("Error in setting details", err) -> returns Error in setting details "no data available"
		return err
	}
}

There is an error in appErr.Details with error being returned as “no data available”.
Is there anything that I am missing?

Even though details is set in the NewNonRetryableApplicationError object, I am not able to fetch the details and put it in

I would like some help in how to fetch the details field that has been set in the NewNonRetryableApplicationError.

2

Are you trying to get the “HelloDetails” details message (string type) from NewNonRetryableApplicationError?
If so you could do:

    var applicationErr *temporal.ApplicationError
	if errors.As(err, &applicationErr) {
		var detailMsg string
		applicationErr.Details(&detailMsg)
		logger.Error(detailMsg)
	}
3

The same set of changes I have used, but still the data which returned from activity to workflow and i am getting as (empty). Could you please help in resolving this.

4

Do you see this data in the ActivityTaskFailed event in the workflow history?

5

When I print logger.err(logging.Error(err)) → prints as " time is old (type: ApplicationError, retryable: true): "

But I print after the below change,

logger.err(logging.Error(err))
if errors.As(err, &appErr) {
			var temp wfstatus
			fmt.Println(appErr.HasDetails())  ---> false
			preCheckErr := appErr.Details(&temp)
         		fmt.Println(temp)------------------------------>{         0001-01-01 00:00:00 +0000 UTC 0001-01-01 00:00:00 +0000 UTC    0001-01-01 00:00:00 +0000 UTC 0001-01-01 00:00:00 +0000 UTC map[] {{ { [] []} { [] []} { [] []}} { { [] []} { [] []} { [] []} { [] []} { [] []}} { { [] []} { [] []} { [] []} { [] []}} { { [] []}}} }
[]
6

Does the ActivityTaskFailed event when you look at it in the UI or through tctl contain any data?