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Code Issues Releases Wiki Activity

🐛 Fix transaction update concurency

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This commit is contained in:
Yohann D'ANELLO
2020-08-05 19:42:44 +02:00
parent b0398e59b8
commit c205219d47
4 changed files with 67 additions and 57 deletions
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51
apps/permission/models.py
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@ -10,7 +10,7 @@ from time import sleep
from django.contrib.contenttypes.models import ContentType
from django.core.exceptions import ValidationError
from django.core.mail import mail_admins
from django.db import models
from django.db import models, transaction
from django.db.models import F, Q, Model
from django.forms import model_to_dict
from django.utils.translation import gettext_lazy as _
@ -43,35 +43,28 @@ class InstancedPermission:
obj = copy(obj)
obj.pk = 0
# Ensure previous models are deleted
for ignored in range(1000):
if self.model.model_class().objects.filter(pk=0).exists():
# If the object exists, that means that one permission is currently checked.
# We wait before the other permission, at most 1 second.
sleep(0.001)
continue
break
for o in self.model.model_class().objects.filter(pk=0).all():
o._force_delete = True
Model.delete(o)
# An object with pk 0 wouldn't deleted. That's not normal, we alert admins.
msg = "Lors de la vérification d'une permission d'ajout, un objet de clé primaire nulle était "\
"encore présent.\n"\
"Type de permission : " + self.type + "\n"\
"Modèle : " + str(self.model) + "\n"\
"Objet trouvé : " + str(model_to_dict(o)) + "\n\n"\
"--\nLe BDE"
mail_admins("[Note Kfet] Un objet a été supprimé de force", msg)
with transaction.atomic():
for o in self.model.model_class().objects.filter(pk=0).all():
o._force_delete = True
Model.delete(o)
# An object with pk 0 wouldn't deleted. That's not normal, we alert admins.
msg = "Lors de la vérification d'une permission d'ajout, un objet de clé primaire nulle était "\
"encore présent.\n"\
"Type de permission : " + self.type + "\n"\
"Modèle : " + str(self.model) + "\n"\
"Objet trouvé : " + str(model_to_dict(o)) + "\n\n"\
"--\nLe BDE"
mail_admins("[Note Kfet] Un objet a été supprimé de force", msg)
# Force insertion, no data verification, no trigger
obj._force_save = True
Model.save(obj, force_insert=True)
# We don't want log anything
obj._no_log = True
ret = self.model.model_class().objects.filter(self.query & Q(pk=0)).exists()
# Delete testing object
obj._force_delete = True
Model.delete(obj)
# Force insertion, no data verification, no trigger
obj._force_save = True
Model.save(obj, force_insert=True)
# We don't want log anything
obj._no_log = True
ret = self.model.model_class().objects.filter(self.query & Q(pk=0)).exists()
# Delete testing object
obj._force_delete = True
Model.delete(obj)
with open("/tmp/log", "w") as f:
f.write(str(obj) + ", " + str(obj.pk) + ", " + str(self.model.model_class().objects.filter(pk=0).exists()))