40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
# Copyright 2017 Red Hat, Inc.
|
|
# 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.
|
|
|
|
from neutron_lib.utils import runtime
|
|
from oslo_log import log as logging
|
|
|
|
|
|
LOG = logging.getLogger(__name__)
|
|
|
|
METERING_NAMESPACE = 'neutron.services.metering_drivers'
|
|
|
|
|
|
def load_metering_driver(plugin, conf):
|
|
"""Load metering driver
|
|
|
|
:param plugin: the metering plugin
|
|
:param conf: driver configuration object
|
|
:raises SystemExit of 1 if driver cannot be loaded
|
|
"""
|
|
|
|
try:
|
|
loaded_class = runtime.load_class_by_alias_or_classname(
|
|
METERING_NAMESPACE, conf.driver)
|
|
return loaded_class(plugin, conf)
|
|
except ImportError:
|
|
LOG.error("Error loading metering driver '%s'", conf.driver)
|
|
raise SystemExit(1)
|