/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/compat/utils.py is in python-oslo.db 4.33.0-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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# 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.
import re
import sqlalchemy
SQLA_VERSION = tuple(
int(num) if re.match(r'^\d+$', num) else num
for num in sqlalchemy.__version__.split(".")
)
sqla_110 = SQLA_VERSION >= (1, 1, 0)
sqla_100 = SQLA_VERSION >= (1, 0, 0)
sqla_097 = SQLA_VERSION >= (0, 9, 7)
sqla_094 = SQLA_VERSION >= (0, 9, 4)
sqla_090 = SQLA_VERSION >= (0, 9, 0)
sqla_08 = SQLA_VERSION >= (0, 8)
def get_postgresql_enums(conn):
"""Return a list of ENUM type names on a Postgresql backend.
For SQLAlchemy 0.9 and lower, makes use of the semi-private
_load_enums() method of the Postgresql dialect. In SQLAlchemy
1.0 this feature is supported using get_enums().
This function may only be called when the given connection
is against the Postgresql backend. It will fail for other
kinds of backends.
"""
if sqla_100:
return [e['name'] for e in sqlalchemy.inspect(conn).get_enums()]
else:
return conn.dialect._load_enums(conn).keys()
def adapt_type_object(type_object, target_class, *args, **kw):
"""Call the adapt() method on a type.
For SQLAlchemy 1.0, runs a local version of constructor_copy() that
allows keyword arguments to be overridden.
See https://github.com/zzzeek/sqlalchemy/commit/\
ceeb033054f09db3eccbde3fad1941ec42919a54
"""
if sqla_110:
return type_object.adapt(target_class, *args, **kw)
else:
# NOTE(zzzeek): this only works for basic types, won't work for
# schema types like Enum, Boolean
# NOTE(zzzeek): this code can be removed once requirements
# are at SQLAlchemy >= 1.1
names = sqlalchemy.util.get_cls_kwargs(target_class)
kw.update(
(k, type_object.__dict__[k]) for k in names.difference(kw)
if k in type_object.__dict__)
return target_class(*args, **kw)
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