tree cc710ca25d31327c41665fb28ae3acda6289166a
parent f070f7bb67fa01719458156b9d26d16385171f09
author ghanshyam <ghanshyammann@gmail.com> 1513236132 +0000
committer Ilya Menkov <imenkov@mirantis.com> 1611658090 +0000

Volume Service Testing: default to v3 endpoints

Volume service has 2 versions of APIs, v2 and v3. v3 base
version 'v3.0' is supposed to be identical to v2 APIs.

Current supported API is v3 and all future development
will be on v3 with microversion.

Base API       v3.0 == v2
API versioning  v3.0 + microversion (v3.1, v3.2 etc)

In current situation, Tempest tests v2 API mainly and
v3 microversion specific change. As Cinder already made v3 as
current supported APIs which are supposed to be identical to v2,
it's is good to test v3 API as default with ability to configure
to test v2 APIs also.

Tempest should have flexibility to run existing test against any
of the API version. All existing tests which used to run on v2 APIs
should pass on v3.0 without any change.

Idea to achieve that is:
 -  Use config option ``[volume].catalog_type`` to switch the target API
    version for testing. For example-
    If it is configured to v3 endpoints, all tests will run against v3 APIs. like
    'volumev3' in case of devstack [1].
    If it is configured to v2 endpoints, all tests will run against v2 APIs. like
    'volumev2' in case of devstack.

Changes required:
Tempest: this commit
 1. Change the default value of the config option ``[volume].catalog_type`` to ``volumev3``
    so that all gate job test v3 as default.
 2. Make all volume service clients version less.

Devstack: I531f3b32e81ac5d282461597ca286c09429cb143
 3. Make Devstack to configure the ``[volume].catalog_type`` on tempest for v2 job.
 4. If Tempest if configured to tests v2 APIs, configure tempest to skip microversion tests
    as no microversion supported in v2 APIs.

v2 API Job: TODO
 5. Add new job for v2 APIs testing and set ``[volume].catalog_type`` to ``volumev2``
    to run all tests against v2 APIs.

This way we will have:
 - default gate testing of v3 APIs.
 - separate job testing v2 APIs till it is required.

..1 https://github.com/openstack-dev/devstack/blob/924b1149c8138bf1401aaef709e00f680509c33f/lib/cinder#L361

NOTE: Next patch will make all service clients under v3 dir
      and keep v2 service clients available for backward
      compatibility.
Related-prod: PRODX-9612
Change-Id: I0c9193501eb9eaa25eb5f0786bb72eb7855099fb