[bitbake-devel] [PATCH 15/18] toaster: work around 'database is locked' error
brian avery
avery.brian at gmail.com
Thu Dec 10 03:56:40 UTC 2015
From: Ed Bartosh <ed.bartosh at linux.intel.com>
When sqlite can not cope with a stream of 'insert' queries it throws
'database is locked' exception.
Wrapping model.save in transaction.atomic context and repeating the call
should solve this issue.
Signed-off-by: Ed Bartosh <ed.bartosh at linux.intel.com>
Signed-off-by: brian avery <avery.brian at gmail.com>
---
lib/toaster/orm/models.py | 20 +++++++++++++++++++-
1 file changed, 19 insertions(+), 1 deletion(-)
diff --git a/lib/toaster/orm/models.py b/lib/toaster/orm/models.py
index 3c51c6f..0d598ac 100644
--- a/lib/toaster/orm/models.py
+++ b/lib/toaster/orm/models.py
@@ -29,10 +29,28 @@ from django.core import validators
from django.conf import settings
import django.db.models.signals
-
import logging
logger = logging.getLogger("toaster")
+if 'sqlite' in settings.DATABASES['default']['ENGINE']:
+ from django.db import transaction, OperationalError
+ from time import sleep
+
+ _base_save = models.Model.save
+ def save(self, *args, **kwargs):
+ while True:
+ try:
+ with transaction.atomic():
+ return _base_save(self, *args, **kwargs)
+ except OperationalError as err:
+ if 'database is locked' in str(err):
+ logger.warning("%s, model: %s, args: %s, kwargs: %s",
+ err, self.__class__, args, kwargs)
+ sleep(0.5)
+ continue
+ raise
+
+ models.Model.save = save
class GitURLValidator(validators.URLValidator):
import re
--
1.9.1
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