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[Ghanshyam Mann <ghanshyam.mann@xxxxxxxxxxxxxxxxxx>]

Public bug reported:

Nova support tagging of instance or other resource like device etc. But
those tags are allowed to be as empty string which does not make much
sense or any use case.

[root@faydevnt ~] # curl -g -i -X PUT http://9.60.18.229:8774/v2.1/78649a9e795f4c42b1975a1f1d923c64/servers/57c948ae-753a-4549-b62e-b763e775e50f/tags -H "Accept: application/json" -H "User-Agent: python-novaclient" -H "OpenStack-API-Version: compute 2.37" -H "X-OpenStack-Nova-API-Version: 2.37" -H "X-Auth-Token: 4451f4afd5e54914984b621a2ffe2e68" -H "Content-Type: application/json" -d '{"tags": ["", ""]}'
HTTP/1.1 200 OK
Content-Length: 14
Content-Type: application/json
Openstack-Api-Version: compute 2.37
X-Openstack-Nova-Api-Version: 2.37
Vary: OpenStack-API-Version
Vary: X-OpenStack-Nova-API-Version
X-Compute-Request-Id: req-ae45d4fc-ba91-4863-ab35-590b287de631
Date: Thu, 08 Dec 2016 11:12:51 GMT

{"tags": [""]}[root@nova server-tag-list 57c948ae-753a-4549-b62e-b763e775e50f
+-----+
| Tag |
+-----+
|     |
+-----+

Nova should 400 if any tag is requested with empty string. that can be
done easily visa json schema with minLength as 1.

** Affects: nova
     Importance: Undecided
     Assignee: Ghanshyam Mann (ghanshyammann)
         Status: New

** Changed in: nova
     Assignee: (unassigned) => Ghanshyam Mann (ghanshyammann)

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https://bugs.launchpad.net/bugs/1648663

Title:
  Nova instance or other resource tags are allowed as empty string

Status in OpenStack Compute (nova):
  New

Bug description:
  Nova support tagging of instance or other resource like device etc.
  But those tags are allowed to be as empty string which does not make
  much sense or any use case.

  [root@faydevnt ~] # curl -g -i -X PUT http://9.60.18.229:8774/v2.1/78649a9e795f4c42b1975a1f1d923c64/servers/57c948ae-753a-4549-b62e-b763e775e50f/tags -H "Accept: application/json" -H "User-Agent: python-novaclient" -H "OpenStack-API-Version: compute 2.37" -H "X-OpenStack-Nova-API-Version: 2.37" -H "X-Auth-Token: 4451f4afd5e54914984b621a2ffe2e68" -H "Content-Type: application/json" -d '{"tags": ["", ""]}'
  HTTP/1.1 200 OK
  Content-Length: 14
  Content-Type: application/json
  Openstack-Api-Version: compute 2.37
  X-Openstack-Nova-Api-Version: 2.37
  Vary: OpenStack-API-Version
  Vary: X-OpenStack-Nova-API-Version
  X-Compute-Request-Id: req-ae45d4fc-ba91-4863-ab35-590b287de631
  Date: Thu, 08 Dec 2016 11:12:51 GMT

  {"tags": [""]}[root@nova server-tag-list 57c948ae-753a-4549-b62e-b763e775e50f
  +-----+
  | Tag |
  +-----+
  |     |
  +-----+

  Nova should 400 if any tag is requested with empty string. that can be
  done easily visa json schema with minLength as 1.

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