deb-murano/muranoapi/db/session.py
Ruslan Kamaldinov 17afc0e0fd Added explicit db-sync command
This patch changes the way we initialize the DB with tables:
* there is new command - 'murano-manage db_sync'
* DB is no longer automatically populated

Change-Id: I1ae06448ddf4a832740e9a2bfccbfd725cb6c3f7
2014-04-02 09:53:52 +00:00

56 lines
1.8 KiB
Python

# Copyright (c) 2014 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.
"""Session management functions."""
import os
from migrate import exceptions as versioning_exceptions
from migrate.versioning import api as versioning_api
from muranoapi.common import config
from muranoapi.db import migrate_repo
from muranoapi.openstack.common.db.sqlalchemy import session as db_session
from muranoapi.openstack.common import log as logging
LOG = logging.getLogger(__name__)
CONF = config.CONF
_FACADE = None
def _create_facade_lazily():
global _FACADE
if _FACADE is None:
_FACADE = db_session.EngineFacade(
CONF.database.connection, sqlite_fk=True,
**dict(CONF.database.iteritems())
)
return _FACADE
def get_session(autocommit=True, expire_on_commit=False):
s = _create_facade_lazily().get_session(autocommit=autocommit,
expire_on_commit=expire_on_commit)
return s
def db_sync():
repo_path = os.path.abspath(os.path.dirname(migrate_repo.__file__))
try:
versioning_api.upgrade(CONF.database.connection, repo_path)
except versioning_exceptions.DatabaseNotControlledError:
versioning_api.version_control(CONF.database.connection, repo_path)
versioning_api.upgrade(CONF.database.connection, repo_path)