120 lines
4.2 KiB
Python
120 lines
4.2 KiB
Python
# 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 keystoneauth1 import loading as ks_loading
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from neutronclient.common import exceptions as n_exc
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from neutronclient.neutron import client as neutron_client
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from octavia_lib.api.drivers import exceptions as driver_exceptions
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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 oslo_utils import excutils
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from ovn_octavia_provider.common import constants
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from ovn_octavia_provider.i18n import _
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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NEUTRON_VERSION = '2.0'
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class KeystoneSession():
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def __init__(self, section=constants.SERVICE_AUTH):
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self._session = None
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self._auth = None
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self.section = section
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ks_loading.register_auth_conf_options(cfg.CONF, self.section)
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ks_loading.register_session_conf_options(cfg.CONF, self.section)
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@property
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def session(self):
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"""Initialize a Keystone session.
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:return: a Keystone Session object
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"""
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if not self._session:
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self._session = ks_loading.load_session_from_conf_options(
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cfg.CONF, self.section, auth=self.auth)
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return self._session
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@property
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def auth(self):
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if not self._auth:
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self._auth = ks_loading.load_auth_from_conf_options(
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cfg.CONF, self.section)
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return self._auth
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class Singleton(type):
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_instances = {}
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def __call__(cls, *args, **kwargs):
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if cls not in cls._instances:
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cls._instances[cls] = super(Singleton, cls).__call__(*args,
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**kwargs)
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return cls._instances[cls]
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class NeutronAuth(metaclass=Singleton):
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def __init__(self, region, service_name=None, endpoint=None,
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endpoint_type='publicURL', insecure=False,
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ca_cert=None):
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"""Create neutron client object.
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:param region: The region of the service
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:param service_name: The name of the neutron service in the catalog
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:param endpoint: The endpoint of the service
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:param endpoint_type: The endpoint_type of the service
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:param insecure: Turn off certificate validation
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:param ca_cert: CA Cert file path
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:return: a Neutron Client object.
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:raises Exception: if the client cannot be created
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"""
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ksession = KeystoneSession()
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kwargs = {'region_name': region,
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'session': ksession.session,
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'endpoint_type': endpoint_type,
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'insecure': insecure}
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if service_name:
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kwargs['service_name'] = service_name
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if endpoint:
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kwargs['endpoint_override'] = endpoint
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if ca_cert:
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kwargs['ca_cert'] = ca_cert
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try:
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self.neutron_client = neutron_client.Client(
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NEUTRON_VERSION, **kwargs)
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except Exception:
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with excutils.save_and_reraise_exception():
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LOG.exception("Error creating Neutron client.")
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def get_neutron_client():
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try:
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return NeutronAuth(
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endpoint=CONF.neutron.endpoint,
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region=CONF.neutron.region_name,
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endpoint_type=CONF.neutron.endpoint_type,
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service_name=CONF.neutron.service_name,
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insecure=CONF.neutron.insecure,
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ca_cert=CONF.neutron.ca_certificates_file,
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).neutron_client
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except n_exc.NeutronClientException as e:
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msg = _('Cannot inialize Neutron Client. Exception: %s. '
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'Please verify Neutron service configuration '
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'in Octavia API configuration.') % e
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raise driver_exceptions.DriverError(
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operator_fault_string=msg)
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