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[Abhishek Kekane <1939169@xxxxxxxxxxxxxxxxxx>]

** Changed in: glance/xena
       Status: In Progress => Won't Fix

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https://bugs.launchpad.net/bugs/1939169

Title:
  glance md-tag-create-multiple overwrites existing tags

Status in Glance:
  Fix Released
Status in Glance xena series:
  Won't Fix

Bug description:
  Our md-tag-create-multiple (/v2/metadefs/namespaces/{namespace_name}/tags) [1] API overwrites existing tags for specified namespace rather than creating new one in addition to the existing tags.
  Where as if you try to create different tags using md-tag-create (/v2/metadefs/namespaces/{namespace_name}/tags/{tag_name}) it is working as expected, means adding new tag in addition to existing ones.

  Steps to reproduce:
  1. source using admin credentials
  $ source devstack/openrc admin admin

  2. Create new public namespace
  $ glance md-namespace-create TagsBugNamespace --visibility public
  +------------+----------------------------------+
  | Property   | Value                            |
  +------------+----------------------------------+
  | created_at | 2021-08-06T17:43:03Z             |
  | namespace  | TagsBugNamespace                 |
  | owner      | a14a058e2d1540c3a0dc7c397c55174e |
  | protected  | False                            |
  | schema     | /v2/schemas/metadefs/namespace   |
  | updated_at | 2021-08-06T17:43:03Z             |
  | visibility | public                           |
  +------------+----------------------------------+

  3. Create single tag using md-tag-create command
  $ glance md-tag-create TagsBugNamespace --name tag1
  +------------+----------------------+
  | Property   | Value                |
  +------------+----------------------+
  | created_at | 2021-08-06T17:57:37Z |
  | name       | tag1                 |
  | updated_at | 2021-08-06T17:57:37Z |
  +------------+----------------------+

  4. Create another tag
  $ glance md-tag-create TagsBugNamespace --name tag2
  +------------+----------------------+
  | Property   | Value                |
  +------------+----------------------+
  | created_at | 2021-08-06T17:57:37Z |
  | name       | tag2                 |
  | updated_at | 2021-08-06T17:57:37Z |
  +------------+----------------------+

  5. Verify that we have two tags in the list
  $ glance md-tag-list TagsBugNamespace
  +------+
  | name |
  +------+
  | tag2 |
  | tag1 |
  +------+

  6. Add more tags using md-tag-crate-multiple command
  $ glance md-tag-create-multiple TagsBugNamespace --names TestTag1141=TestTag2411 --delim =
  +-------------+
  | name        |
  +-------------+
  | TestTag1141 |
  | TestTag2411 |
  +-------------+

  7. Now run tags list command again
  $ glance md-tag-list TagsBugNamespace
  +-------------+
  | name        |
  +-------------+
  | TestTag2411 |
  | TestTag1141 |
  +-------------+

  Expected result:
  These new tags should have been added to existing tags.

  Actual result:
  Existing tags gets deleted and only newly added tags using md-tag-crate-multiple command remains.

  * This is further to show that adding new tag using md-tag-create command now will add a new tag and does not overwrite existing ones.
  $ glance md-tag-create TagsBugNamespace --name tag3
  +------------+----------------------+
  | Property   | Value                |
  +------------+----------------------+
  | created_at | 2021-08-06T18:12:14Z |
  | name       | tag3                 |
  | updated_at | 2021-08-06T18:12:14Z |
  +------------+----------------------+

  * Verify that we have not overwritten existing tags now;
  $ glance md-tag-list TagsBugNamespace
  +-------------+
  | name        |
  +-------------+
  | tag3        |
  | TestTag2411 |
  | TestTag1141 |
  +-------------+

  [1] https://docs.openstack.org/api-ref/image/v2/metadefs-
  index.html?expanded=create-tag-definition-detail,create-tags-
  detail,get-tag-definition-detail,delete-all-tag-definitions-
  detail#create-tags

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