Proposal: Get all permissions associated to a resource relation (reflection)

[DanieleIsoni]

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Problem

At the moment there isn't an API to retrieve all permissions that are given with a relation on a resource. Eg: given a schema like:

definition resource {
    relation manager: user
    relation owner: user
    
    permission own = owner
    permission manage = manager + own
}

it would be very useful if there was an API that given resource_type=resource, relation=owner returns a list of permissions [own, manage], while if relation=manager the result would be [manage]

Proposal

Introduce a new API does what explained in "Problem"

[Singha2]

One suggestion I would like to add if possible, make "relation" parameter optional, if not passed, return all the possible permissions.

Same API pass, resource_type=resource Returns -> [own, manage]

[josephschorr]

Related: https://github.com/authzed/spicedb/issues/439

[DonDebonair]

Is this something that the AuthZed team plans to work on? At my company we're evaluating alternatives to Oso, and SpiceDB/AuthZed seem to fit the majority of the use cases and is much more flexible.

But we do have a need to show to users what permissions they have on specific resources. As I understand from this issue, this doesn't exist yet?

[vroldanbet]

@DonDebonair 👋🏻 it would seem like your requirement is slightly different tho?

• this issue suggests that "for a given resource and relation, what permissions does it have?"
• your ask reads like "for a given subject, what permissions does it have over a given resource?"

is that correct?

[DonDebonair]

@vroldanbet you are absolutely right! I misread/misunderstood the original issue. I mixed up relation and subject.

So I'm indeed asking "for a given subject, what permissions does it have over a given resource"

Should I open a separate issue for that, or is this already possible and did I not look properly for it?

[vroldanbet]

@DonDebonair yup, feel free to open a new issue! I suspect it would be built on top of the foundations for https://github.com/authzed/spicedb/issues/621