Request: show pins through API

[onnozweers]

Dear dCache devs,

I would like to kindly request an option to show pin info of a file through the API. We have users (specifically from the LOFAR project) who would like to get an overview of all pins for a file and specifically their expiration timestamps. I could not find such info in the API on our fairly up-to-date dCache test instance.

I could think of two suitable API locations to expose this info:

• /namespace - since almost all file info is there anyway;
• /tape/archiveinfo - since it is tape oriented, and the Gfal software already uses the /tape call collection for tape operations, and I can imagine that one day some Gfal developer might like to add this capability to Gfal.

Not sure which location would be better.

Kind regards,
Onno

[DmitryLitvintsev]

I think namespace would be proper, May be part of what is returned by:

/api/v1/namespace/<file name>?optional=true

[ygrange]

I have a question that is probably related (representing the Use case mentioned above): Apart from checking a pins status, we'd also like to be able to release a single pin, either by aborting the request, or directly. I could imagine this is essentially the same end point but with a DELETE rather than a GET.