116 lines
4.2 KiB
Python
116 lines
4.2 KiB
Python
# Copyright (c) 2015 Clinton Knight. All rights reserved.
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License. You may obtain
|
|
# a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
# License for the specific language governing permissions and limitations
|
|
# under the License.
|
|
"""
|
|
Unified driver for NetApp storage systems.
|
|
|
|
Supports multiple storage systems of different families and driver modes.
|
|
"""
|
|
|
|
from oslo_utils import importutils
|
|
|
|
from manila import exception
|
|
from manila.i18n import _, _LI
|
|
from manila.openstack.common import log as logging
|
|
from manila.share import driver
|
|
from manila.share.drivers.netapp import cluster_mode
|
|
from manila.share.drivers.netapp import utils as na_utils
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
# Add new drivers here, no other code changes required.
|
|
NETAPP_UNIFIED_DRIVER_REGISTRY = {
|
|
'ontap_cluster':
|
|
{
|
|
'multi_svm':
|
|
'manila.share.drivers.netapp.cluster_mode.NetAppClusteredShareDriver',
|
|
}
|
|
}
|
|
NETAPP_UNIFIED_DRIVER_DEFAULT_MODE = {
|
|
'ontap_cluster': 'multi_svm',
|
|
}
|
|
|
|
|
|
class NetAppDriver(object):
|
|
""""NetApp unified share storage driver.
|
|
|
|
Acts as a factory to create NetApp storage drivers based on the
|
|
storage family and driver mode configured.
|
|
"""
|
|
|
|
REQUIRED_FLAGS = ['netapp_storage_family', 'driver_handles_share_servers']
|
|
|
|
def __new__(cls, *args, **kwargs):
|
|
|
|
config = kwargs.get('configuration', None)
|
|
if not config:
|
|
raise exception.InvalidInput(
|
|
reason=_('Required configuration not found'))
|
|
|
|
config.append_config_values(driver.share_opts)
|
|
config.append_config_values(cluster_mode.NETAPP_NAS_OPTS)
|
|
na_utils.check_flags(NetAppDriver.REQUIRED_FLAGS, config)
|
|
|
|
return NetAppDriver.create_driver(config.netapp_storage_family,
|
|
config.driver_handles_share_servers,
|
|
*args, **kwargs)
|
|
|
|
@staticmethod
|
|
def create_driver(storage_family, driver_handles_share_servers, *args,
|
|
**kwargs):
|
|
""""Creates an appropriate driver based on family and mode."""
|
|
|
|
storage_family = storage_family.lower()
|
|
|
|
# determine driver mode
|
|
if driver_handles_share_servers is None:
|
|
driver_mode = NETAPP_UNIFIED_DRIVER_DEFAULT_MODE.get(
|
|
storage_family)
|
|
|
|
if driver_mode:
|
|
LOG.debug('Default driver mode %s selected.' % driver_mode)
|
|
else:
|
|
raise exception.InvalidInput(
|
|
reason=_('Driver mode was not specified and a default '
|
|
'value could not be determined from the '
|
|
'specified storage family'))
|
|
elif driver_handles_share_servers:
|
|
driver_mode = 'multi_svm'
|
|
else:
|
|
driver_mode = 'single_svm'
|
|
|
|
fmt = {'storage_family': storage_family,
|
|
'driver_mode': driver_mode}
|
|
LOG.info(_LI('Requested unified config: %(storage_family)s and '
|
|
'%(driver_mode)s.') % fmt)
|
|
|
|
family_meta = NETAPP_UNIFIED_DRIVER_REGISTRY.get(storage_family)
|
|
if family_meta is None:
|
|
raise exception.InvalidInput(
|
|
reason=_('Storage family %s is not supported')
|
|
% storage_family)
|
|
|
|
driver_loc = family_meta.get(driver_mode)
|
|
if driver_loc is None:
|
|
raise exception.InvalidInput(
|
|
reason=_('Driver mode %(driver_mode)s is not supported '
|
|
'for storage family %(storage_family)s') % fmt)
|
|
|
|
kwargs = kwargs or {}
|
|
kwargs['netapp_mode'] = 'proxy'
|
|
driver = importutils.import_object(driver_loc, *args, **kwargs)
|
|
LOG.info(_LI('NetApp driver of family %(storage_family)s and mode '
|
|
'%(driver_mode)s loaded.') % fmt)
|
|
return driver
|