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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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57
apps/note/models/transactions.py
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@ -1,7 +1,7 @@
# Copyright (C) 2018-2020 by BDE ENS Paris-Saclay
# SPDX-License-Identifier: GPL-3.0-or-later
from django.core.exceptions import ValidationError
from django.db import models
from django.db import models, transaction
from django.urls import reverse
from django.utils import timezone
from django.utils.translation import gettext_lazy as _
@ -196,38 +196,51 @@ class Transaction(PolymorphicModel):
or dest_balance > 2147483647 or dest_balance < -2147483648:
raise ValidationError(_("The note balances must be between - 21 474 836.47 € and 21 474 836.47 €."))
@transaction.atomic
def save(self, *args, **kwargs):
"""
When saving, also transfer money between two notes
"""
self.validate(False)
with transaction.atomic():
self.refresh_from_db()
self.source.refresh_from_db()
self.destination.refresh_from_db()
self.validate(False)
if not self.source.is_active or not self.destination.is_active:
if 'force_insert' not in kwargs or not kwargs['force_insert']:
if 'force_update' not in kwargs or not kwargs['force_update']:
raise ValidationError(_("The transaction can't be saved since the source note "
"or the destination note is not active."))
if not self.source.is_active or not self.destination.is_active:
if 'force_insert' not in kwargs or not kwargs['force_insert']:
if 'force_update' not in kwargs or not kwargs['force_update']:
raise ValidationError(_("The transaction can't be saved since the source note "
"or the destination note is not active."))
# If the aliases are not entered, we assume that the used alias is the name of the note
if not self.source_alias:
self.source_alias = str(self.source)
# If the aliases are not entered, we assume that the used alias is the name of the note
if not self.source_alias:
self.source_alias = str(self.source)
if not self.destination_alias:
self.destination_alias = str(self.destination)
if not self.destination_alias:
self.destination_alias = str(self.destination)
if self.source.pk == self.destination.pk:
# When source == destination, no money is transferred
if self.source.pk == self.destination.pk:
# When source == destination, no money is transferred
super().save(*args, **kwargs)
return
self.log("Saving")
# We save first the transaction, in case of the user has no right to transfer money
super().save(*args, **kwargs)
return
self.log("Saved")
# We save first the transaction, in case of the user has no right to transfer money
super().save(*args, **kwargs)
# Save notes
self.source._force_save = True
self.source.save()
self.log("Source saved")
self.destination._force_save = True
self.destination.save()
self.log("Destination saved")
# Save notes
self.source._force_save = True
self.source.save()
self.destination._force_save = True
self.destination.save()
def log(self, msg):
with open("/tmp/log", "a") as f:
f.write(msg + "\n")
def delete(self, **kwargs):
"""