99 lines
2.8 KiB
Python
99 lines
2.8 KiB
Python
# -*- coding: utf-8 -*-
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# Copyright 2014 Objectif Libre
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#
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# Licensed under the Apache License, Version 2.0 (the "License"); you may
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# not use this file except in compliance with the License. You may obtain
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# a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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# License for the specific language governing permissions and limitations
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# under the License.
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#
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# @author: Stéphane Albert
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#
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from oslo.config import cfg
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from oslo.db.sqlalchemy import utils
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import sqlalchemy
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from cloudkitty import config # NOQA
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from cloudkitty import db
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from cloudkitty.db import api
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from cloudkitty.db.sqlalchemy import models
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from cloudkitty.openstack.common import log as logging
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CONF = cfg.CONF
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LOG = logging.getLogger(__name__)
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def get_backend():
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return DBAPIManager
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class State(api.State):
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def get_state(self, name):
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session = db.get_session()
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try:
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return bool(utils.model_query(
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models.StateInfo,
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session
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).filter_by(
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name=name,
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).value('state'))
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except sqlalchemy.orm.exc.NoResultFound:
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return None
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def set_state(self, name, state):
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session = db.get_session()
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with session.begin():
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try:
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q = utils.model_query(
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models.StateInfo,
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session
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).filter_by(
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name=name,
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).with_lockmode('update')
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db_state = q.one()
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db_state.state = state
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.StateInfo(name=name, state=state)
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session.add(db_state)
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return bool(db_state.state)
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def get_metadata(self, name):
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session = db.get_session()
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return utils.model_query(
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models.StateInfo,
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session
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).filter_by(
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name=name,
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).value('s_metadata')
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def set_metadata(self, name, metadata):
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session = db.get_session()
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try:
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db_state = utils.model_query(
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models.StateInfo,
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session
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).filter_by(
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name=name,
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).with_lockmode('update').one()
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db_state.s_metadata = metadata
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except sqlalchemy.orm.exc.NoResultFound:
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db_state = models.StateInfo(name=name, s_metadata=metadata)
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session.add(db_state)
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finally:
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session.flush()
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class DBAPIManager(object):
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@staticmethod
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def get_state():
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return State()
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