neutron/neutron/services/qos/notification_drivers/message_queue.py

72 lines
2.4 KiB
Python

# 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 oslo_log import log as logging
from neutron.api.rpc.callbacks import events
from neutron.api.rpc.callbacks import registry as rpc_registry
from neutron.api.rpc.callbacks import resources
from neutron.i18n import _LW
from neutron.objects.qos import policy as policy_object
from neutron.services.qos.notification_drivers import qos_base
LOG = logging.getLogger(__name__)
def _get_qos_policy_cb(resource, policy_id, **kwargs):
context = kwargs.get('context')
if context is None:
LOG.warning(_LW(
'Received %(resource)s %(policy_id)s without context'),
{'resource': resource, 'policy_id': policy_id}
)
return
policy = policy_object.QosPolicy.get_by_id(context, policy_id)
return policy
class RpcQosServiceNotificationDriver(
qos_base.QosServiceNotificationDriverBase):
"""RPC message queue service notification driver for QoS."""
def __init__(self):
rpc_registry.register_provider(
_get_qos_policy_cb,
resources.QOS_POLICY)
def get_description(self):
return "Message queue updates"
def create_policy(self, policy):
#No need to update agents on create
pass
def update_policy(self, policy):
# TODO(QoS): this is temporary until we get notify() implemented
try:
rpc_registry.notify(resources.QOS_POLICY,
events.UPDATED,
policy)
except NotImplementedError:
pass
def delete_policy(self, policy):
# TODO(QoS): this is temporary until we get notify() implemented
try:
rpc_registry.notify(resources.QOS_POLICY,
events.DELETED,
policy)
except NotImplementedError:
pass