51 lines
1.8 KiB
Python
51 lines
1.8 KiB
Python
# Copyright 2018 Rackspace, US Inc.
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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 oslo_config import cfg
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from oslo_log import log as logging
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from stevedore import driver as stevedore_driver
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from wsme import types as wtypes
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from octavia.common import exceptions
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def get_driver(provider):
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# If this came in None it must be a load balancer that existed before
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# provider support was added. These must be of type 'amphora' and not
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# whatever the current "default" is set to.
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if isinstance(provider, wtypes.UnsetType):
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provider = CONF.api_settings.default_provider_driver
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elif not provider:
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provider = 'amphora'
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if provider not in CONF.api_settings.enabled_provider_drivers:
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LOG.warning("Requested provider driver '%s' was not enabled in the "
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"configuration file.", provider)
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raise exceptions.ProviderNotEnabled(prov=provider)
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try:
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driver = stevedore_driver.DriverManager(
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namespace='octavia.api.drivers',
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name=provider,
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invoke_on_load=True).driver
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driver.name = provider
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except Exception as e:
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LOG.error('Unable to load provider driver %s due to: %s',
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provider, e)
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raise exceptions.ProviderNotFound(prov=provider)
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return driver
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