41 lines
1.2 KiB
Python
41 lines
1.2 KiB
Python
# Copyright 2013 Mirantis, Inc.
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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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import logging
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from contextlib import contextmanager
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from sqlalchemy import create_engine, orm
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LOG = logging.getLogger(__name__)
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@contextmanager
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def contexted_session(dbpath):
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'''Allows to handle session via context manager
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'''
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LOG.debug('Starting session with dbpath={0}'.format(dbpath))
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engine = create_engine(dbpath)
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session = orm.Session(bind=engine)
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try:
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LOG.debug('Before yielding session.')
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yield session
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session.commit()
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except Exception:
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LOG.exception('Raised error in contexted session.')
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session.rollback()
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raise
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finally:
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session.close()
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