/usr/lib/python2.7/dist-packages/oslo_db/sqlalchemy/types.py is in python-oslo.db 4.13.3-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 | # 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.
import json
from sqlalchemy.types import TypeDecorator, Text
from sqlalchemy.dialects import mysql
class JsonEncodedType(TypeDecorator):
"""Base column type for data serialized as JSON-encoded string in db."""
type = None
impl = Text
def __init__(self, mysql_as_long=False, mysql_as_medium=False):
super(JsonEncodedType, self).__init__()
if mysql_as_long and mysql_as_medium:
raise TypeError("mysql_as_long and mysql_as_medium are mutually "
"exclusive")
if mysql_as_long:
self.impl = Text().with_variant(mysql.LONGTEXT(), 'mysql')
elif mysql_as_medium:
self.impl = Text().with_variant(mysql.MEDIUMTEXT(), 'mysql')
def process_bind_param(self, value, dialect):
if value is None:
if self.type is not None:
# Save default value according to current type to keep the
# interface consistent.
value = self.type()
elif self.type is not None and not isinstance(value, self.type):
raise TypeError("%s supposes to store %s objects, but %s given"
% (self.__class__.__name__,
self.type.__name__,
type(value).__name__))
serialized_value = json.dumps(value)
return serialized_value
def process_result_value(self, value, dialect):
if value is not None:
value = json.loads(value)
return value
class JsonEncodedDict(JsonEncodedType):
"""Represents dict serialized as json-encoded string in db.
Note that this type does NOT track mutations. If you want to update it, you
have to assign existing value to a temporary variable, update, then assign
back. See this page for more robust work around:
http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/mutable.html
"""
type = dict
class JsonEncodedList(JsonEncodedType):
"""Represents list serialized as json-encoded string in db.
Note that this type does NOT track mutations. If you want to update it, you
have to assign existing value to a temporary variable, update, then assign
back. See this page for more robust work around:
http://docs.sqlalchemy.org/en/rel_1_0/orm/extensions/mutable.html
"""
type = list
|