72 lines
2.5 KiB
Python
72 lines
2.5 KiB
Python
# Copyright (c) 2014 Pure Storage, Inc.
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# All Rights Reserved.
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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from oslo_log import log as logging
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from cinder import context
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from cinder import exception
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LOG = logging.getLogger(__name__)
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class VolumeDriverUtils(object):
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def __init__(self, namespace, db):
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self._data_namespace = namespace
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self._db = db
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@staticmethod
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def _get_context(ctxt):
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if not ctxt:
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return context.get_admin_context()
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return ctxt
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def get_driver_initiator_data(self, initiator, ctxt=None):
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try:
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return self._db.driver_initiator_data_get(
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self._get_context(ctxt),
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initiator,
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self._data_namespace
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)
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except exception.CinderException:
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LOG.exception("Failed to get driver initiator data for"
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" initiator %(initiator)s and namespace"
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" %(namespace)s",
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{'initiator': initiator,
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'namespace': self._data_namespace})
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raise
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def insert_driver_initiator_data(self, initiator, key, value, ctxt=None):
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"""Update the initiator data at key with value.
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If the key has already been set to something return False, otherwise
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if saved successfully return True.
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"""
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try:
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return self._db.driver_initiator_data_insert_by_key(
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self._get_context(ctxt),
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initiator,
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self._data_namespace,
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key,
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value
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)
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except exception.CinderException:
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LOG.exception("Failed to insert initiator data for"
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" initiator %(initiator)s and backend"
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" %(backend)s for key %(key)s.",
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{'initiator': initiator,
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'backend': self._data_namespace,
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'key': key})
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raise
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