fuel-web/nailgun/nailgun/extensions/utils.py
Evgeniy L c260a23091 Migrations for extensions should not depend on Core's db schema
There should be a way to use and test extensions when
there is no core database schema.

* perform data migration from the core only when there
  is buffer table
* add basic tests which are run separately from core's
  tests

Change-Id: Ide0d2e619913675ff4fff3febc9707bec3bfb112
Closes-bug: #1477020
2015-07-23 16:50:49 +03:00

28 lines
1.0 KiB
Python

# Copyright 2015 Mirantis, 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 sqlalchemy.engine.reflection import Inspector
from nailgun.extensions.consts import extensions_migration_buffer_table_name
def is_buffer_table_exist(connection):
"""Performs check if buffer table exists in the database.
:returns: True if table exists, False otherwise
"""
inspector = Inspector.from_engine(connection)
return (extensions_migration_buffer_table_name in
inspector.get_table_names())