delete reference when unsharing a resource

[butonic]

how are we going to clean up a reference when the owner unshares a folder?

AFAICT the gateway usershareprolider will get a RemoveShare request.

1. we delete the share in the usershareprovider, and
2. we delete the grant in the storageprovider of the owner.

But we also need to delete the reference of the recipient. how do we do that?

[butonic]

we could make the gateway delete references if it encounters invalid ones? so whenever we list the shares and we encounter a not found or permissions error ... we remove the reference? or you we just leave them in and keep ignoring them?

[ishank011]

Yes, that could be one option. Or we could run a background cron. We need a periodic garbage collection functionality for a lot of cases - public shares, invalid references, expired tokens in OCM. So it'd be good to have a package for this.