manila/manila/share/drivers/emc/plugin_manager.py
Jay Xu e8709c8005 Update EMC Manila driver framework using stevedore
Alternative way of registering plugins in EMC Manila driver framework
using the module *stevedore*.

Change-Id: I3c38a2dbc9575a81c83e64180cd37916abe68334
Implements: blueprint register-emc-manila-plugin-with-stevedore
2014-12-10 05:00:32 -05:00

32 lines
1.1 KiB
Python

# Copyright (c) 2014 EMC Corporation.
# All Rights Reserved.
#
# 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.
"""EMC Share Driver Plugin Framework."""
from stevedore import extension
class EMCPluginManager(object):
def __init__(self, namespace):
self.namespace = namespace
self.extension_manager = extension.ExtensionManager(namespace)
def load_plugin(self, name, logger=None):
for ext in self.extension_manager.extensions:
if ext.name == name:
storage_conn = ext.plugin(logger)
return storage_conn
return None