Tao Liu 7f3827f24d Keystone token and resource caching
Add the following misc. changes to dcorch and dcmanager components:
- Cache the master resource in dcorch audit
- Consolidate the openstack drivers to common module, combine the
  dcmanager and dcorch sysinv client. (Note: the sdk driver that
  used by nova, neutron and cinder will be cleaned as part of
  story 2006588).
- Update the common sdk driver:
  . in order to avoid creating new keystone client multiple times
  . to add a option for caching region clients, in addition to the
    keystone client
  . finally, to randomize the token early renewal duration
- Change subcloud audit manager, patch audit manager,
  and sw update manager to:
  utilize the sdk driver which caches the keystone client and token

Test cases:
1. Manage/unmanage subclouds
2. Platform resources sync and audit
3. Verify the keystone token is cached until the token is
   expired
4. Add/delete subclouds
5. Managed subcloud goes offline/online (power off/on)
6. Managed subcloud goes offline/online (delete/add a static route)
7. Apply a patch to all subclouds via patch Orchestration

Story: 2007267
Task: 38865

Change-Id: I75e0cf66a797a65faf75e7c64dafb07f54c2df06
Signed-off-by: Tao Liu <tao.liu@windriver.com>
2020-03-23 21:31:04 -04:00

38 lines
1.1 KiB
Python

# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# Copyright (c) 2017-2020 Wind River Systems, Inc.
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# of this software may be licensed only pursuant to the terms
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"""
Base class for all drivers.
"""
import abc
import six
from oslo_log import log as logging
LOG = logging.getLogger(__name__)
class DriverBase(object):
six.add_metaclass(abc.ABCMeta)
"""Base class for all drivers."""
def __init__(self, context):
self.context = context