neutron/neutron/agent/ovsdb/native/connection.py

74 lines
2.7 KiB
Python

# Copyright (c) 2015 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.
import os
from debtcollector import moves
from oslo_config import cfg
from ovs.db import idl
from ovs.stream import Stream
from ovsdbapp.backend.ovs_idl import connection as _connection
from ovsdbapp.backend.ovs_idl import idlutils
import tenacity
from neutron.agent.ovsdb.native import exceptions as ovsdb_exc
from neutron.agent.ovsdb.native import helpers
TransactionQueue = moves.moved_class(_connection.TransactionQueue,
'TransactionQueue', __name__)
Connection = moves.moved_class(_connection.Connection, 'Connection', __name__)
def configure_ssl_conn():
"""Configures required settings for an SSL based OVSDB client connection
:return: None
"""
req_ssl_opts = {'ssl_key_file': cfg.CONF.OVS.ssl_key_file,
'ssl_cert_file': cfg.CONF.OVS.ssl_cert_file,
'ssl_ca_cert_file': cfg.CONF.OVS.ssl_ca_cert_file}
for ssl_opt, ssl_file in req_ssl_opts.items():
if not ssl_file:
raise ovsdb_exc.OvsdbSslRequiredOptError(ssl_opt=ssl_opt)
elif not os.path.exists(ssl_file):
raise ovsdb_exc.OvsdbSslConfigNotFound(ssl_file=ssl_file)
# TODO(ihrachys): move to ovsdbapp
Stream.ssl_set_private_key_file(req_ssl_opts['ssl_key_file'])
Stream.ssl_set_certificate_file(req_ssl_opts['ssl_cert_file'])
Stream.ssl_set_ca_cert_file(req_ssl_opts['ssl_ca_cert_file'])
def idl_factory():
conn = cfg.CONF.OVS.ovsdb_connection
schema_name = 'Open_vSwitch'
if conn.startswith('ssl:'):
configure_ssl_conn()
try:
helper = idlutils.get_schema_helper(conn, schema_name)
except Exception:
helpers.enable_connection_uri(conn)
@tenacity.retry(wait=tenacity.wait_exponential(multiplier=0.01),
stop=tenacity.stop_after_delay(1),
reraise=True)
def do_get_schema_helper():
return idlutils.get_schema_helper(conn, schema_name)
helper = do_get_schema_helper()
# TODO(twilson) We should still select only the tables/columns we use
helper.register_all()
return idl.Idl(conn, helper)