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# 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.
from oslo_utils import versionutils
from sqlalchemy import __version__
_vers = versionutils.convert_version_to_tuple(__version__)
sqla_2 = _vers >= (2, )
native_pre_ping_event_support = _vers >= (2, 0, 5)
def dialect_from_exception_context(ctx):
if sqla_2:
# SQLAlchemy 2.0 still has context.engine, however if the
# exception context is called in the context of a ping handler,
# engine is not present. need to use dialect instead
return ctx.dialect
else:
return ctx.engine.dialect
def driver_connection(connection):
if sqla_2:
return connection.connection.driver_connection
else:
return connection.connection.connection
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