DEPRECATED, Neutron integration with OVN
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# Copyright 2019 Red Hat, Inc.
# All Rights Reserved.
# 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.
import datetime
from neutron_lib.db import api as db_api
from oslo_config import cfg
from oslo_utils import timeutils
from oslo_utils import uuidutils
from networking_ovn.db import models
def add_node(node_uuid=None):
if node_uuid is None:
node_uuid = uuidutils.generate_uuid()
session = db_api.get_writer_session()
with session.begin():
row = models.OVNHashRing(node_uuid=node_uuid,
return node_uuid
def remove_nodes_from_host():
session = db_api.get_writer_session()
with session.begin():
def touch_nodes_from_host():
session = db_api.get_writer_session()
with session.begin():
session.query(models.OVNHashRing).filter_by({'updated_at': timeutils.utcnow()})
def get_active_nodes(interval, from_host=False):
session = db_api.get_reader_session()
limit = timeutils.utcnow() - datetime.timedelta(seconds=interval)
with session.begin():
query = session.query(models.OVNHashRing).filter(
models.OVNHashRing.updated_at >= limit)
if from_host:
query = query.filter_by(
return query.all()