Cloned from launchpad blueprint https://blueprints.launchpad.net/keystone/+spec/role-assignment-ordering.

Description:

The v3 spec contains a series of URL APIs for role assignment management, e.g.:

PUT /domains/{domain_id}/users/{user_id}/roles/{role_id}

This seems an un-natural ordering, especially in the light of us wanting to define additional terms to indicate inheritance.  A more natural ordering within the url would be along the lines of how we describe a role assignment:

Create an assignment for "role X for User Y on Domain Z"

e.g. PUT /roles/{role_id}/users/{user_id}/domains/{domain_id}

It is proposed that we use this new ordering going forward, deprecate the old ordering (but of course continue to support this for a few releases)

Specification URL (additional information):

None