Mercurial > libervia-backend
view sat/core/exceptions.py @ 2716:06160b529da6
core (memory/sqlite): changed history constraint
/!\ Database schema change /!\
History was using a unique constraint on `profile_id, timestamp, source, dest, source_res, dest_res`, which can cause trouble because several messages send quickly by the same person can have a common timestamp (specially with delayed messages where precision is second), resulting in message loss.
The new constraint use `profile_id, stanza_id, source, dest` where `stanza_id` is XEP-0359 stanza_id, so it's unique by definition, and no message should be lost anymore.
Because sqlite doesn't support altering table with a constraint change, we have to create new tables and copy old data to new one, which can be pretty long.
Sqlite update mechanism with "specifics" has been fixed when several updates are applied (e.g. moving from v5 to v7) and a specific is in the workflow.
author | Goffi <goffi@goffi.org> |
---|---|
date | Sun, 09 Dec 2018 14:07:26 +0100 |
parents | e9cd473a2f46 |
children | 181735d1b062 |
line wrap: on
line source
#!/usr/bin/env python2 # -*- coding: utf-8 -*- # SàT Exceptions # Copyright (C) 2011 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/>. class ProfileUnknownError(Exception): pass class ProfileNotInCacheError(Exception): pass class ProfileNotSetError(Exception): """This error raises when no profile has been set (value @NONE@ is found, but it should have been replaced)""" class ProfileConnected(Exception): """This error is raised when trying to delete a connected profile.""" class ProfileNotConnected(Exception): pass class ProfileKeyUnknown(Exception): pass class ClientTypeError(Exception): """This code is not allowed for this type of client (i.e. component or not)""" class UnknownEntityError(Exception): pass class UnknownGroupError(Exception): pass class MissingModule(Exception): # Used to indicate when a plugin dependence is not found # it's nice to indicate when to find the dependence in argument string pass class NotFound(Exception): pass class ConfigError(Exception): pass class DataError(Exception): pass class ConflictError(Exception): pass class TimeOutError(Exception): pass class CancelError(Exception): pass class InternalError(Exception): pass class FeatureNotFound( Exception ): # a disco feature/identity which is needed is not present pass class BridgeInitError(Exception): pass class BridgeExceptionNoService(Exception): pass class DatabaseError(Exception): pass class PasswordError(Exception): pass class PermissionError(Exception): pass class ParsingError(Exception): pass # Something which need to be done is not available yet class NotReady(Exception): pass class InvalidCertificate(Exception): """A TLS certificate is not valid""" pass