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[Sean Dague <sean@xxxxxxxxx>]

** Changed in: nova
       Status: In Progress => Invalid

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https://bugs.launchpad.net/bugs/1240361

Title:
  v3/os-quota-sets/detail key_pairs, security_group_rules `in_use` value
  is wrong

Status in OpenStack Compute (Nova):
  Invalid

Bug description:
  A clean openstack environment. master branch, commit id:
  6affe670672f4e2f9f55a750732c620693acd1ef.

  In V3 there is a API named os-quota-sets/detail which report not only the hard_limit of quota, but also
  report in_use of the quota. Most of the quota usage is correct, but in_use value of 'key_pairs' and 
  'security_group_rules' always if zero. The detail is below.

  $ nova keypair-list
  +------+-------------------------------------------------+
  | Name | Fingerprint                                     |
  +------+-------------------------------------------------+
  | 1    | 63:70:20:00:6c:31:0d:86:6a:51:7c:c4:fd:f0:49:b6 |
  | 2    | 89:bc:fd:d9:68:41:9d:07:00:06:eb:cd:c9:5e:15:62 |
  | 3    | f4:a0:6e:d5:fa:91:fc:27:db:c1:8f:5f:16:6e:5f:47 |
  +------+-------------------------------------------------+

  $ nova secgroup-list-rules a
  +-------------+-----------+---------+-----------+--------------+
  | IP Protocol | From Port | To Port | IP Range  | Source Group |
  +-------------+-----------+---------+-----------+--------------+
  | tcp         | 1         | 80      | 0.0.0.0/0 |              |
  | tcp         | 80        | 81      | 0.0.0.0/0 |              |
  | tcp         | 81        | 82      | 0.0.0.0/0 |              |
  | tcp         | 83        | 84      | 0.0.0.0/0 |              |
  +-------------+-----------+---------+-----------+--------------+

  $ curl  http://openstack.org:8774/v3/os-quota-sets/5b36b3bff0f44d70ab45334a9985ae6a/detail .....
  {
      "quota_set": {
        ....
              "key_pairs": {
              "in_use": 0, 
              "limit": 3, 
              "reserved": 0
          }, 
          "security_group_rules": {
              "in_use": 0, 
              "limit": 20, 
              "reserved": 0
          }, 
          .....
  }

  but when create more keypairs api will raise 413 (Quota exceeded, too many key pairs).
  $ nova keypair-add 4
  ERROR: Quota exceeded, too many key pairs. (HTTP 413) (Request-ID: req-7002664c-e0a4-4a51-bfd8-221950278707)

  ---------------
  The reason is `key_pairs` and `security_group_rules` is CountableResource. They can't be reserved, 
  so quota_usages table does not contains their information. V3 /os-quota-set/detail api just report 
  the usage which is from nova.quota.get_project_quotas(), which come from database table quota_usages. 
  A quick workaround is make nova.quota.get_project_quotas()/ nova.quota.get_user_quotas() recognize 
  CountableResource and report the correct value of it.

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