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LocalStatusSQLite.py: Python 3.11 compatible threadsafety check

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Signed-off-by: 0pointerexception <w-gh@wmeyer.eu>
This commit is contained in:
0pointerexception 2022-11-17 19:43:58 +01:00
parent 253f97a3e9
commit 7cd32cf834
1 changed files with 8 additions and 2 deletions
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offlineimap/folder/LocalStatusSQLite.py
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@ -17,7 +17,7 @@
import os
import sqlite3 as sqlite
from sys import exc_info
from sys import exc_info,version_info
from threading import Lock
from .Base import BaseFolder
@ -75,6 +75,11 @@ class LocalStatusSQLiteFolder(BaseFolder):
self.filename = os.path.join(self.getroot(), self.getfolderbasename())
self._newfolder = False # Flag if the folder is new.
"""
sqlite threading mode must be 3 as of Python 3.11, checking against
1 for versions below Python 3.11 to sustain backwards compatibility.
"""
self._threading_mode_const = 3 if version_info.minor >=11 else 1
dirname = os.path.dirname(self.filename)
if not os.path.exists(dirname):
@ -102,9 +107,10 @@ class LocalStatusSQLiteFolder(BaseFolder):
if self._in_transactions < 1:
self.connection.commit()
def openfiles(self):
# Make sure sqlite is in multithreading SERIALIZE mode.
assert sqlite.threadsafety == 1, 'Your sqlite is not multithreading safe.'
assert sqlite.threadsafety == self._threading_mode_const, 'Your sqlite is not multithreading safe.'
with self._databaseFileLock.getLock():
# Try to establish connection, no need for threadsafety in __init__.