1 ##############################################################################
2 # Copyright (c) 2015 Huawei Technologies Co.,Ltd and others.
4 # All rights reserved. This program and the accompanying materials
5 # are made available under the terms of the Apache License, Version 2.0
6 # which accompanies this distribution, and is available at
7 # http://www.apache.org/licenses/LICENSE-2.0
8 ##############################################################################
13 class DriverPluginManager(object):
17 self.mgr = stevedore.extension.ExtensionManager(
18 namespace="drivers.plugins", invoke_on_load=True)
20 def load(self, drivers):
21 plugin = self.determine_driver_type(drivers)
22 ext = self.mgr[plugin]
27 self.mgr.map(self._clean)
30 def _clean(self, ext, *args, **kwargs):
33 def get_all_supported_drivers(self):
35 for ext_name in self.mgr.names():
36 ext = self.mgr[ext_name]
37 self.plugins[ext_name] = ext.obj.get_supported_drivers()
40 def determine_driver_type(self, drivers):
42 for plugin, supported in self.get_all_supported_drivers().items():
43 if not (s - set(supported)):
46 raise Exception('unspported drivers: %s' % drivers)