79 lines
2.1 KiB
Python
79 lines
2.1 KiB
Python
# Copyright (c) 2014 Rackspace, Inc.
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain 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,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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# implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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import abc
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from oslo_config import cfg
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import six
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_LIMITS_OPTIONS = [
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cfg.IntOpt('default_services_paging', default=10,
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help='Default services pagination size')
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]
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_LIMITS_GROUP = 'limits:storage'
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@six.add_metaclass(abc.ABCMeta)
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class StorageDriverBase(object):
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"""Interface definition for storage drivers.
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Data plane storage drivers are responsible for implementing the
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core functionality of the system.
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Connection information and driver-specific options are
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loaded from the config file.
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:param conf: Configuration containing options for this driver.
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:type conf: `oslo_config.ConfigOpts`
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"""
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def __init__(self, conf):
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self._conf = conf
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self._conf.register_opts(_LIMITS_OPTIONS, group=_LIMITS_GROUP)
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self.limits_conf = self._conf[_LIMITS_GROUP]
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@abc.abstractmethod
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def is_alive(self):
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"""Check whether the storage is ready.
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:raise NotImplementedError
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"""
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raise NotImplementedError
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@abc.abstractproperty
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def services_controller(self):
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"""Returns the driver's hostname controller.
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:raise NotImplementedError
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"""
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raise NotImplementedError
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@abc.abstractproperty
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def flavors_controller(self):
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"""Returns the driver's hostname controller.
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:raise NotImplementedError
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"""
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raise NotImplementedError
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def storage_name(self):
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"""For name.
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:raise NotImplementedError
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"""
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raise NotImplementedError
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