Use case: Calculation API

[rasmusfiskerbang]

Hi,

I have a use case where I will ask an API to start a calculation by sending a POST to an endpoint:
endpoint/calc
This endpoint will then return a job-id, e.g. fsdf78dsf9dsg89sfh89, which will then be used in this endpoint:
endpoint/result/{job-id}
This endpoint will return an object with a status which can either be "success" or "pending". If it is "pending" then I want to try again after retryDelay.

Any ideas about how I should go about this?

• Should I make the second query dependent on the first?
• What about raising an error if the status is pending, and then pass a function to retry which will check whether the error was due to the calculation being pending?

Thanks

[TkDodo]

My first thoughts are:

• yes, the second query should be dependent on the existence of an ID in the result of the first query. Use the enabled option for that.
• sounds also good to me! Using the retry function seems nice, but your queryFn needs to throw an error for that. Your query will be in loading state until you get a valid result, so you can’t differentiate between loading and pending with that approach I think. If you want that, i think moving the success/pending state to a local useState (write to the state in onSuccess) and then enable refetchInterval depending on it would work.

[rasmusfiskerbang]

Thanks, glad to hear I was in the right direction.