Does anyone have a cleaner way of doing things in the following scenario •

task_with_optional_return

returns optional FlyteFile •

dynamic_task

that calls above task BUT returns regular FlyteFile How do i cleanly resolve this optional types. For now i had to create a temporary task that takes in

Optional[FlyteFile]

and return

Flytefile

but creating an entire new task just for this type conversion is just a bit ugly 😅 unfortunately i cannot check for `None`because during runtime compilation return type of

task_with_optional_return

is Promise.

Could you elaborate on your use-case? If you want to return an

Optional[FlyteFile]

from your task, why do you want to set the type to

FlyteFile

while returning the same in a dynamic workflow? Does your task always return a

FlyteFile

, meaning, is it not necessary to check for

None

return type?

oh I dont want to return an optional type for this workflow but there are other workflow that returns an Optional. I am re-using a task that returns

Optional[FlyteFile]

but the parent dynamic task will always return

Flytefile

.

I still don't understand. Your task is being used by multiple workflows and some amongst them return an

Optional[FlyteFile]

, correct? But there's this dynamic workflow where you want to return

FlyteFile

. How do you know beforehand if your task is going to return a

FlyteFile

or a

None

?

sorry for the confusion. So task im trying to use in multiple places return

Optional[FlyteFile]

But the dynamic task im calling needs to just return

FlyteFile

Understood. I don't think it's possible to set the output type to

FlyteFile

in your dynamic workflow if the task's output that's being returned from the dynamic workflow is an

Optional[FlyteFile]

.

i see, so above is the only way to resolve this right

Yeah! I know it's not an optimal solution but I think it isn't right for Flyte to support it either. Does that make sense to you?

Yeah that makes sense