Is it possible to schedule a task in an http endpoint and then cancel it via another request to the same endpoint?

[martinkz]

I'm not sure if croner is the right tool for what I'm trying to do. Basically I want to build an endpoint that receives an GET or POST request with a date/time, and I'd like to schedule some predefined function to run on that date/time. But I'd also like to be able to cancel (and possibly reschedule) the run if another request arrives at the endpoint with a different date.

Is something like this possible to do and how would I go about it?