nova.volume.cinder.API incorrectly derives from nova.db.base.Base

[Jay Pipes]

For some reason, nova.volume.cinder.API derives from nova.db.base.Base, which looks like this (in its entirety):

class Base(object):
    """DB driver is injected in the init method."""

    def __init__(self, db_driver=None):
        super(Base, self).__init__()
        if not db_driver:
            db_driver = CONF.db_driver
        self.db = importutils.import_module(db_driver) # pylint: disable=C0103

I checked and nova.volume.cinder.API makes no reference at all to self.db, therefore unless I am mistaken, there's no reason for this inheritance.

[Christopher Yeoh (cyeoh-0)]

Patch is here https://review.openstack.org/#/c/80859

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/80859
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=048cd541c7066185b3802bded7b2f009859443c3
Submitter: Jenkins
Branch: master

commit 048cd541c7066185b3802bded7b2f009859443c3
Author: Jay Pipes <email address hidden>
Date: Sun Mar 16 19:37:37 2014 -0400

    Correct inheritance of nova.volume.cinder.API

    nova.volume.cinder.API was deriving incorrectly from nova.db.base. This
    patch simply removes that unnecessary import and changes
    nova.volume.cinder.API to derive from object instead.

    Change-Id: I5092b7fbb3780317a09a512aed7ecbe1d57a4428
    Closes-bug: #1292997