46 lines
1.6 KiB
Python
46 lines
1.6 KiB
Python
# 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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"""Database context manager for placement database connection."""
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from oslo_db.sqlalchemy import enginefacade
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from oslo_log import log as logging
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from placement.util import run_once
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LOG = logging.getLogger(__name__)
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placement_context_manager = enginefacade.transaction_context()
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def _get_db_conf(conf_group):
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conf_dict = dict(conf_group.items())
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# Remove the 'sync_on_startup' conf setting, enginefacade does not use it.
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# Use pop since it might not be present in testing situations and we
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# don't want to care here.
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conf_dict.pop('sync_on_startup', None)
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return conf_dict
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@run_once("TransactionFactory already started, not reconfiguring.",
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LOG.warning)
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def configure(conf):
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placement_context_manager.configure(
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**_get_db_conf(conf.placement_database))
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def get_placement_engine():
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return placement_context_manager.writer.get_engine()
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@enginefacade.transaction_context_provider
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class DbContext(object):
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"""Stub class for db session handling outside of web requests."""
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