864f8072b2
neutron-lib now contains the load_class_by_alias_or_classname function. This patch removes the function from neutron and uses it from lib. NeutronLibImpact Change-Id: I47ef642fcb3c8ded5eb7ed0a637033c7bcb3632b
40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
# Copyright 2017 Red Hat, 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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from neutron_lib.utils import runtime
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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METERING_NAMESPACE = 'neutron.services.metering_drivers'
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def load_metering_driver(plugin, conf):
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"""Load metering driver
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:param plugin: the metering plugin
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:param conf: driver configuration object
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:raises SystemExit of 1 if driver cannot be loaded
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"""
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try:
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loaded_class = runtime.load_class_by_alias_or_classname(
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METERING_NAMESPACE, conf.driver)
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return loaded_class(plugin, conf)
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except ImportError:
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LOG.error("Error loading metering driver '%s'", conf.driver)
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raise SystemExit(1)
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