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# Copyright 2017 Lenovo, Inc.
#
# 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.
"""
Abstract base classes for drivers.
"""
import abc
import six
@six.add_metaclass(abc.ABCMeta)
class BaseDriver(object):
"""Base class for all drivers.
Defines the abstract base class for generic and vendor drivers.
"""
standard_interfaces = ('discover', 'list', 'update', 'attach', 'detach')
discover = None
"""`Standard` attribute for discovering drivers.
A reference to an instance of :class:DiscoverInterface.
"""
list = None
"""`Core` attribute for listing drivers.
A reference to an instance of :class:ListInterface.
"""
update = None
"""`Standard` attribute to update drivers.
A reference to an instance of :class:UpdateInterface.
"""
attach = None
"""`Standard` attribute to attach accelerator to an instance.
A reference to an instance of :class:AttachInterface.
"""
detach = None
"""`Standard` attribute to detach accelerator to an instance.
A reference to an instance of :class:AttachInterface.
"""
def __init__(self):
pass
@property
def all_interfaces(self):
return (list(self.standard_interfaces))
def get_properties(self):
"""Gets the properties of the driver.
:returns: dictionary of <property name>:<property description> entries.
"""
properties = {}
for iface_name in self.all_interfaces:
iface = getattr(self, iface_name, None)
if iface:
properties.update(iface.get_properties())
return properties
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