1ff8469ef7
The Oslo libraries have moved all of their code out of the 'oslo' namespace package into per-library packages. The namespace package was retained during kilo for backwards compatibility, but will be removed by the liberty-2 milestone. This change removes the use of the namespace package, replacing it with the new package names. The patches in the libraries will be put on hold until application patches have landed, or L2, whichever comes first. At that point, new versions of the libraries without namespace packages will be released as a major version update. Please merge this patch, or an equivalent, before L2 to avoid problems with those library releases. Blueprint: remove-namespace-packages https://blueprints.launchpad.net/oslo-incubator/+spec/remove-namespace-packages Change-Id: Iae62b48993eef3b31420f8cc245a55f5e303c4fc
52 lines
1.6 KiB
Python
52 lines
1.6 KiB
Python
# Copyright 2010 United States Government as represented by the
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# Administrator of the National Aeronautics and Space Administration.
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# All Rights Reserved.
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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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"""Session Handling for SQLAlchemy backend."""
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from oslo_config import cfg
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from oslo_db.sqlalchemy import session
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from oslo_log import log as logging
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LOG = logging.getLogger(__name__)
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CONF = cfg.CONF
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_FACADES = {}
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def _create_facade_lazily(cfg_group, connection=None, discriminator=None):
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connection = connection or cfg.CONF[cfg_group].connection
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cache_name = "%s:%s" % (cfg_group, discriminator)
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if cache_name not in _FACADES:
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_FACADES[cache_name] = session.EngineFacade(
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connection,
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**dict(cfg.CONF[cfg_group].iteritems()))
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return _FACADES[cache_name]
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def get_engine(cfg_group):
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facade = _create_facade_lazily(cfg_group)
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return facade.get_engine()
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def get_session(cfg_group, connection=None, discriminator=None, **kwargs):
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facade = _create_facade_lazily(cfg_group, connection, discriminator)
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return facade.get_session(**kwargs)
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