components/openstack/neutron/files/evs/db/api.py
author Drew Fisher <drew.fisher@oracle.com>
Wed, 11 Jun 2014 17:13:12 -0700
changeset 1944 56ac2df1785b
parent 1760 353323c7bdc1
permissions -rw-r--r--
PSARC/2014/207 OpenStack Glance Update to Havana PSARC/2014/208 OpenStack Cinder Update to Havana PSARC/2014/209 OpenStack Keystone Update to Havana PSARC/2014/210 OpenStack Nova Update to Havana 18416146 Neutron agents (L3 and DHCP) should cleanup resources when they are disabled 18562372 Failed to create a new project under Horizon 18645763 ZFSSA Cinder Driver support 18686327 evs agent silently ignores user-specified pool allocation ranges 18702697 fibre channel volumes should be supported in the cinder volume driver 18734289 nova won't terminate failed kz deployments 18738371 cinder-volume:setup should account for commented-out zfs_volume_base 18738374 cinder-volume:setup should check for existence of configuration file 18826190 nova-compute fails due to nova.utils.to_bytes 18855698 Update OpenStack to Havana 2013.2.3 18855710 Update python-cinderclient to 1.0.9 18855743 Update python-keystoneclient to 0.8.0 18855754 Update python-neutronclient to 2.3.4 18855764 Update python-novaclient to 2.17.0 18855793 Update python-swiftclient to 2.1.0 18856992 External networks can be deleted even when floating IP addresses are in use 18857784 bake in some more openstack configuration 18884923 Incorrect locale facets in python modules for openstack 18913890 the error in _get_view_and_lun may cause the failure of deleting volumes 18943044 Disable 'Security Groups' tab in Horizon dashboard

# vim: tabstop=4 shiftwidth=4 softtabstop=4

# Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved.
#
#    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.
#
# @author: Girish Moodalbail, Oracle, Inc.
#

import sqlalchemy as sa
from sqlalchemy.ext import declarative
from sqlalchemy import orm

from oslo.config import cfg

from neutron.context import ContextBase
from neutron.db import model_base


EVS_DB_BASE = declarative.declarative_base(cls=model_base.NeutronBaseV2)
EVS_DB_ENGINE = None
EVS_DB_MAKER = None


class EVSContext(ContextBase):
    @property
    def session(self):
        return self._session

    @session.setter
    def session(self, session):
        self._session = session


def configure_db():
    global EVS_DB_ENGINE
    if not EVS_DB_ENGINE:
        sql_connection = cfg.CONF.DATABASE.sql_connection
        EVS_DB_ENGINE = sa.create_engine(sql_connection, echo=False)
        EVS_DB_BASE.metadata.create_all(EVS_DB_ENGINE)


def get_session(autocommit=True, expire_on_commit=False):
    global EVS_DB_ENGINE, EVS_DB_MAKER
    assert EVS_DB_ENGINE
    if not EVS_DB_MAKER:
        EVS_DB_MAKER = orm.sessionmaker(bind=EVS_DB_ENGINE,
                                        autocommit=autocommit,
                                        expire_on_commit=expire_on_commit)
    return EVS_DB_MAKER()


def get_evs_context(context):
    """Overrides the Neutron DB session with EVS DB session"""

    evs_context = EVSContext.from_dict(context.to_dict())
    evs_context.session = get_session()

    return evs_context