2a247e89e5
Appending "unsupported" to the driver name in the driver listing for unsupported drivers. The instance variable "_supported" in BaseVD is changed to class variable "SUPPORTED" so that the supported status of drivers can be read after loading the driver modules. Change-Id: I21ca9137a847873f2ec026520daf8b97603d1888
81 lines
2.5 KiB
Python
81 lines
2.5 KiB
Python
# Copyright 2016 Dell 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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#
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import fnmatch
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import inspect
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import os
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from cinder import interface
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def _ensure_loaded(start_path):
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"""Loads everything in a given path.
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This will make sure all classes have been loaded and therefore all
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decorators have registered class.
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:param start_path: The starting path to load.
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"""
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for root, folder, files in os.walk(start_path):
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for phile in fnmatch.filter(files, '*.py'):
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path = os.path.join(root, phile)
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try:
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__import__(
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path.replace('/', '.')[:-3], globals(), locals())
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except Exception:
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# Really don't care here
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pass
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def get_volume_drivers():
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"""Get a list of all volume drivers."""
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_ensure_loaded('cinder/volume/drivers')
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return [DriverInfo(x) for x in interface._volume_register]
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def get_backup_drivers():
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"""Get a list of all backup drivers."""
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_ensure_loaded('cinder/backup/drivers')
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return [DriverInfo(x) for x in interface._backup_register]
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def get_fczm_drivers():
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"""Get a list of all fczm drivers."""
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_ensure_loaded('cinder/zonemanager/drivers')
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return [DriverInfo(x) for x in interface._fczm_register]
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class DriverInfo(object):
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"""Information about driver implementations."""
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def __init__(self, cls):
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self.cls = cls
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self.desc = cls.__doc__
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self.class_name = cls.__name__
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self.class_fqn = '{}.{}'.format(inspect.getmodule(cls).__name__,
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self.class_name)
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self.version = getattr(cls, 'VERSION', None)
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self.ci_wiki_name = getattr(cls, 'CI_WIKI_NAME', None)
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self.supported = getattr(cls, 'SUPPORTED', True)
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def __str__(self):
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return self.class_name
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def __repr__(self):
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return self.class_fqn
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def __hash__(self):
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return hash(self.class_fqn)
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