[Pulp-dev] AccessPolicy Model Advice ... input needed

Dennis Kliban dkliban at redhat.com
Tue Jul 14 00:20:39 UTC 2020

Pulp 2 users would definitely be familiar with describing policies in terms
of urls. The Pulp 3 REST API already uses the pulp_href field as the
primary identifier. You should implement idea 1.

On Mon, Jul 13, 2020, 5:45 PM Brian Bouterse <bmbouter at redhat.com> wrote:

> I need some design input. To store AccessPolicy data in the DB I think we
> want one Model where each instance is the access policy for a given
> viewset. I think this would be better than one Model per Viewset which
> would generate N tables for N viewsets with 1 instance of each which would
> be very strange and inefficient.
> So let's assume we have a simple definition like the one below. Each
> instance stores the policy for one viewset.
> class AccessPolicy(BaseModel):
>     data = JSONField()
> So what second field can I add to this that would allow me to relate an
> instance of this model to a viewset. For example the FileRemoteViewset
> here:
> https://github.com/pulp/pulp_file/blob/de638519fc02d588f403db4c5cfcca7552543c50/pulp_file/app/viewsets.py#L116
> Idea 1: Add a viewset = CharField(). Have it store values as URLs, e.g.
> /pulp/api/v3/remotes/file/file/.
> Idea 2: Add a viewset = CharField(), and have it store values as
> classpaths, e.g. 'pulp_file.app.viewsets.RemoteFileViewset'.
> I think Idea 1 makes the most sense because that's how our users think of
> it. I can't think of a good alternative. What do you think makes the most
> sense? What alternative ideas should we consider?
> If you have feedback please share it. I need to start into something to
> get it going tomorrow even if it's just Idea 1 for lack of an alternate
> proposal.
> Thanks,
> Brian
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