Module exercise_answer_upload_reaper 

Removes files uploaded to be named in an exercise answer that no submission was ever made from.

How long an upload is spared depends on its origin, since a native client uploads immediately before submitting while an iframe student may hold an upload for the length of an exam. The binding row is soft-deleted rather than removed so that a submit naming a reaped file can still answer upload_expired instead of the misleading unknown_upload.

Constants

MAX_CONCURRENT_REAPS 🔒

Functions

main

reap 🔒

reap_one 🔒

Retires the binding, removes the object, and only then soft-deletes the file_uploads row. Ok(false) means a submission came to reference the upload after get_reapable listed it, so it is no longer reapable.