Source code for octavia.api.drivers.driver_factory

# Copyright 2018 Rackspace, US Inc.
#    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
#    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 oslo_config import cfg
from oslo_log import log as logging
from stevedore import driver as stevedore_driver
from wsme import types as wtypes

from octavia.common import exceptions

LOG = logging.getLogger(__name__)

[docs]def get_driver(provider): # If this came in None it must be a load balancer that existed before # provider support was added. These must be of type 'amphora' and not # whatever the current "default" is set to. if isinstance(provider, wtypes.UnsetType): provider = CONF.api_settings.default_provider_driver elif not provider: provider = 'amphora' if provider not in CONF.api_settings.enabled_provider_drivers: LOG.warning("Requested provider driver '%s' was not enabled in the " "configuration file.", provider) raise exceptions.ProviderNotEnabled(prov=provider) try: driver = stevedore_driver.DriverManager( namespace='octavia.api.drivers', name=provider, invoke_on_load=True).driver = provider except Exception as e: LOG.error('Unable to load provider driver %s due to: %s', provider, str(e)) raise exceptions.ProviderNotFound(prov=provider) return driver