9 class DriverPluginManager(object):
12 self.mgr = stevedore.extension.ExtensionManager(namespace="drivers.plugins", invoke_on_load=True)
14 def load(self, drivers):
15 plugin = self.determine_driver_type(drivers)
16 ext = self.mgr[plugin]
21 self.mgr.map(self._clean)
24 def _clean(self, ext, *args, **kwargs):
27 def get_all_supported_drivers(self):
29 for ext_name in self.mgr.names():
30 ext = self.mgr[ext_name]
31 self.plugins[ext_name] = ext.obj.get_supported_drivers()
34 def determine_driver_type(self, drivers):
36 for plugin, supported in self.get_all_supported_drivers().items():
37 if not (s - set(supported)):
40 raise Exception('unspported drivers: %s' % drivers)