Status code from HEAD requests must be consistent

[Samuel de Medeiros Queiroz]

Bug 'HEAD and GET inconsistencies in Keystone' [1] reported that HEAD should be identical to GET except that there is no body returned, as defined on the HTTP 1.1 specification [2], then 200 status code have to be returned [3].

Some inconsistencies were removed, but there is still some work to be done:

1) For all HEAD/GET APIs:
   a) Fix return from 204 to 200, if change applies;
   b) Fix related tests, e.g checking a grant [4];
   c) Fix identity v3 API specification, that reports 204 is returned on most of HEAD APIs (except for /auth/tokens).
2) Default status code asserted on test_v3 [5] should be 200 instead of 204

[1] https://bugs.launchpad.net/keystone/+bug/1334368
[2] http://tools.ietf.org/html/rfc2616#section-9.4
[3] http://tools.ietf.org/html/rfc2616#section-10.2.1
[4] https://github.com/openstack/keystone/blob/master/keystone/tests/test_v3_assignment.py#L881
[5] https://github.com/openstack/keystone/blob/master/keystone/tests/test_v3.py#L479

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/142065

[OpenStack Infra (hudson-openstack)]

Change abandoned by Rodrigo Duarte (<email address hidden>) on branch: master
Review: https://review.openstack.org/142065
Reason: Not a bug, HEAD and GET returns the same status code:

$ curl -i -H "X-Auth-Token: $TOKEN" http://localhost:5000/v3/OS-INHERIT/domains/default/users/$USER_ID/roles/$ROLE_ID/inherited_to_projects
HTTP/1.1 204 No Content

$ curl -i -I -H "X-Auth-Token: $TOKEN" http://localhost:5000/v3/OS-INHERIT/domains/default/users/$USER_ID/roles/$ROLE_ID/inherited_to_projects
HTTP/1.1 204 No Content

$ curl -i -X HEAD -H "X-Auth-Token: $TOKEN" http://localhost:5000/v3/OS-INHERIT/domains/default/users/$USER_ID/roles/$ROLE_ID/inherited_to_projects
HTTP/1.1 204 No Content

[Lance Bragstad (lbragstad)]

Is this still a bug, or can it be moved from "In Progress" since the review was abandon?

[Steve Martinelli (stevemar)]

no movement in over a year, only patch is abandoned