Mercurial > libervia-backend
view libervia/backend/models/core.py @ 4212:5f2d496c633f
core: get rid of `pickle`:
Use of `pickle` to serialise data was a technical legacy that was causing trouble to store
in database, to update (if a class was serialised, a change could break update), and to
security (pickle can lead to code execution).
This patch remove all use of Pickle in favour in JSON, notably:
- for caching data, a Pydantic model is now used instead
- for SQLAlchemy model, the LegacyPickle is replaced by JSON serialisation
- in XEP-0373 a class `PublicKeyMetadata` was serialised. New method `from_dict` and
`to_dict` method have been implemented to do serialisation.
- new methods to (de)serialise data can now be specified with Identity data types. It is
notably used to (de)serialise `path` of avatars.
A migration script has been created to convert data (for upgrade or downgrade), with
special care for XEP-0373 case. Depending of size of database, this migration script can
be long to run.
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author | Goffi <goffi@goffi.org> |
---|---|
date | Fri, 23 Feb 2024 13:31:04 +0100 |
parents | a1f7040b5a15 |
children | 0d7bb4df2343 |
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#!/usr/bin/env python3 # Libervia common models # Copyright (C) 2009-2023 Jérôme Poisson (goffi@goffi.org) # This program is free software: you can redistribute it and/or modify # it under the terms of the GNU Affero General Public License as published by # the Free Software Foundation, either version 3 of the License, or # (at your option) any later version. # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU Affero General Public License for more details. # You should have received a copy of the GNU Affero General Public License # along with this program. If not, see <http://www.gnu.org/licenses/>. from pydantic import BaseModel, Field class MessageData(dict): pass class MessageUpdateData(BaseModel): type: str def __init__(self, **kwargs): if "type" not in kwargs: kwargs["type"] = "reactions" super().__init__(**kwargs) class MessageReactionData(MessageUpdateData): reactions: dict[str, list[str]] = Field( description="Reaction to reacting entities mapping" ) class MessageEdition(BaseModel): """Data used to send a message edition""" message: dict[str, str] subject: dict[str, str] = Field(default_factory=dict) extra: dict[str, str] = Field(default_factory=dict)