neutron/neutron/agent/ovn/metadata/ovsdb.py

87 lines
3.3 KiB
Python

# Copyright 2017 Red Hat, 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
#
# 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
from ovs.db import idl
from ovsdbapp.backend.ovs_idl import connection
from ovsdbapp.backend.ovs_idl import idlutils
from ovsdbapp.schema.open_vswitch import impl_idl as idl_ovs
from neutron.common.ovn import utils as ovn_utils
from neutron.conf.plugins.ml2.drivers.ovn import ovn_conf as config
from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import impl_idl_ovn
from neutron.plugins.ml2.drivers.ovn.mech_driver.ovsdb import ovsdb_monitor
LOG = log.getLogger(__name__)
class MetadataAgentOvnSbIdl(ovsdb_monitor.OvnIdl):
SCHEMA = 'OVN_Southbound'
def __init__(self, chassis=None, events=None, tables=None):
connection_string = config.get_ovn_sb_connection()
ovsdb_monitor._check_and_set_ssl_files(self.SCHEMA)
helper = self._get_ovsdb_helper(connection_string)
if tables is None:
tables = ('Chassis', 'Encap', 'Port_Binding', 'Datapath_Binding',
'SB_Global')
for table in tables:
helper.register_table(table)
try:
super(MetadataAgentOvnSbIdl, self).__init__(
None, connection_string, helper, leader_only=False)
except TypeError:
# TODO(twilson) We can remove this when we require ovs>=2.12.0
super(MetadataAgentOvnSbIdl, self).__init__(
None, connection_string, helper)
if chassis:
for table in set(tables).intersection({'Chassis',
'Chassis_Private'}):
self.set_table_condition(table, [['name', '==', chassis]])
if events:
self.notify_handler.watch_events(events)
@ovn_utils.retry(max_=180)
def _get_ovsdb_helper(self, connection_string):
return idlutils.get_schema_helper(connection_string, self.SCHEMA)
@ovn_utils.retry()
def start(self):
LOG.info('Getting OvsdbSbOvnIdl for MetadataAgent with retry')
conn = connection.Connection(
self, timeout=config.get_ovn_ovsdb_timeout())
return impl_idl_ovn.OvsdbSbOvnIdl(conn)
def post_connect(self):
pass
class MetadataAgentOvsIdl(object):
def start(self):
connection_string = config.cfg.CONF.ovs.ovsdb_connection
helper = idlutils.get_schema_helper(connection_string,
'Open_vSwitch')
tables = ('Open_vSwitch', 'Bridge', 'Port', 'Interface')
for table in tables:
helper.register_table(table)
ovs_idl = idl.Idl(
connection_string, helper,
probe_interval=config.get_ovn_ovsdb_probe_interval())
conn = connection.Connection(
ovs_idl, timeout=config.cfg.CONF.ovs.ovsdb_connection_timeout)
return idl_ovs.OvsdbIdl(conn)