Rodolfo Alonso Hernandez 1546d349b1 Add native implementation OVSDB API
Added native implementation OVSDB API. Both APIs may be enabled
via configuration file. The default one is the CLI vsctl.

A new configuration variable, ``ovsdb_connection``, is added to
define the connection string for the OVSDB backend.

Added functional tests to vif_plug_ovs. This commit also includes
the base functions to execute functional tests and a set of them
to test the OVSDB APIs: native and ovs-vsctl.

Closes-Bug: #1666917
Change-Id: I86fbf8c67572e51889eb091d7bff7f9350b52481
2019-02-26 18:15:14 +00:00

42 lines
1.3 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.
import abc
from oslo_utils import importutils
import six
interface_map = {
'vsctl': 'vif_plug_ovs.ovsdb.impl_vsctl',
'native': 'vif_plug_ovs.ovsdb.impl_idl',
}
def get_instance(context, iface_name=None):
"""Return the configured OVSDB API implementation"""
iface = importutils.import_module(
interface_map[iface_name or context.interface])
return iface.api_factory(context)
@six.add_metaclass(abc.ABCMeta)
class ImplAPI(object):
@abc.abstractmethod
def has_table_column(self, table, column):
"""Check if a column exists in a database table
:param table: (string) table name
:param column: (string) column name
:return: True if the column exists, False if not.
"""