Я использую post-save signal
для модели, чтобы запустить задачу сельдерея . Он работал раньше, но внезапно он дает мне TransactionManagementError .
Модель
class FieldSightXF(models.Model):
xf = models.ForeignKey(XForm, related_name="field_sight_form")
site = models.ForeignKey(Site, related_name="site_forms", null=True, blank=True)
project = models.ForeignKey(Project, related_name="project_forms", null=True, blank=True)
is_staged = models.BooleanField(default=False)
is_scheduled = models.BooleanField(default=False)
date_created = models.DateTimeField(auto_now=True)
date_modified = models.DateTimeField(auto_now=True)
schedule = models.OneToOneField(Schedule, blank=True, null=True, related_name="schedule_forms")
stage = models.OneToOneField(Stage, blank=True, null=True, related_name="stage_forms")
shared_level = models.IntegerField(default=2, choices=SHARED_LEVEL)
form_status = models.IntegerField(default=0, choices=FORM_STATUS)
fsform = models.ForeignKey('self', blank=True, null=True, related_name="parent")
is_deployed = models.BooleanField(default=False)
is_deleted = models.BooleanField(default=False)
is_survey = models.BooleanField(default=False)
from_project = models.BooleanField(default=True)
default_submission_status = models.IntegerField(default=0, choices=FORM_STATUS)
logs = GenericRelation('eventlog.FieldSightLog')
class Meta:
db_table = 'fieldsight_forms_data'
# unique_together = (("xf", "site"), ("xf", "is_staged", "stage"),("xf", "is_scheduled", "schedule"))
verbose_name = _("XForm")
verbose_name_plural = _("XForms")
ordering = ("-date_created",)
Сигнал после сохранения
@receiver(post_save, sender=FieldSightXF)
def share_form(sender, instance, created, **kwargs):
if instance.project is not None and created:
from onadata.apps.fsforms.tasks import share_form_managers
task_obj = CeleryTaskProgress.objects.create(user=instance.xf.user,
description="Share Forms",
task_type=17, content_object=instance)
if task_obj:
try:
share_form_managers.delay(instance.id, task_obj.id)
except:
pass
post_save.connect(create_messages, sender=FieldSightXF)
CeleryTaskProgress
- это , используемый для отслеживания хода выполнения задач сельдерея.
Задача
@shared_task(max_retires=5)
def share_form_managers(fxf, task_id):
fxf = FieldSightXF.objects.get(pk=fxf)
userrole = UserRole.objects.filter(project=fxf.project, group__name='Project Manager')
users = User.objects.filter(user_roles__in=userrole)
shared = share_form(users, fxf.xf)
if shared:
CeleryTaskProgress.objects.filter(id=task_id).update(status=2)
else:
CeleryTaskProgress.objects.filter(id=task_id).update(status=3)
метод share_form
def share_form(users, xform):
from onadata.apps.fsforms.models import ObjectPermission, Asset
for user in users:
try:
codenames = ['view_asset', 'change_asset']
permissions = Permission.objects.filter(content_type__app_label='kpi', codename__in=codenames)
for perm in permissions:
object_id = Asset.objects.get(uid=xform.id_string).id
content_type = ContentType.objects.get(id=21)
# Create the new permission
new_permission = ObjectPermission.objects.create(
object_id=object_id,
content_type=content_type,
user=user,
permission_id=perm.pk,
deny=False,
inherited=False
)
except:
return False
else:
return True
Этот процесс заключается в том, что всякий раз, когда создается объект FieldSightXF
(форма назначается проекту), форма передается руководителям проектов этого проекта.
Раньше не было никаких проблем, поскольку я передавал объект FieldSightXF
в качестве параметра для задачи, но теперь я передаю идентификатор объекта как:
Ранее
share_form_managers.delay(instance, task_obj.id)
Текущее
share_form_managers.delay(instance.id, task_obj.id)
Теперь, оба случая дают мне упомянутую ошибку. Если я прокомментирую вышеприведенную строку из метода сигнала после сохранения, ошибка исчезнет.
Я попробовал предложения из других ответов, которые были даны для аналогичной проблемы, но они не работали для меня.
Полная трассировка ошибок:
ERROR 2019-06-13 10:49:50,743 base 11527 140653367232256 Internal Server Error: /forms/api/fxf/
Traceback (most recent call last):
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/viewsets.py", line 87, in view
return self.dispatch(request, *args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/views.py", line 466, in dispatch
response = self.handle_exception(exc)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/views.py", line 463, in dispatch
response = handler(request, *args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/mixins.py", line 21, in create
self.perform_create(serializer)
File "/home/sanip/naxa/source/fieldsight/onadata/apps/fsforms/viewsets/FieldSightXformViewset.py", line 85, in perform_create
fxf.save()
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 734, in save
force_update=force_update, update_fields=update_fields)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 762, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 827, in _save_table
forced_update)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 877, in _do_update
return filtered._update(values) > 0
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/query.py", line 580, in _update
return query.get_compiler(self.db).execute_sql(CURSOR)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1062, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 840, in execute_sql
cursor.execute(sql, params)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/utils.py", line 59, in execute
self.db.validate_no_broken_transaction()
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/base/base.py", line 327, in validate_no_broken_transaction
"An error occurred in the current transaction. You can't "
TransactionManagementError: An error occurred in the current transaction. You can't execute queries until the end of the 'atomic' block.
Internal Server Error: /forms/api/fxf/
Traceback (most recent call last):
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/core/handlers/base.py", line 132, in get_response
response = wrapped_callback(request, *callback_args, **callback_kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/views/decorators/csrf.py", line 58, in wrapped_view
return view_func(*args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/viewsets.py", line 87, in view
return self.dispatch(request, *args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/views.py", line 466, in dispatch
response = self.handle_exception(exc)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/views.py", line 463, in dispatch
response = handler(request, *args, **kwargs)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/rest_framework/mixins.py", line 21, in create
self.perform_create(serializer)
File "/home/sanip/naxa/source/fieldsight/onadata/apps/fsforms/viewsets/FieldSightXformViewset.py", line 85, in perform_create
fxf.save()
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 734, in save
force_update=force_update, update_fields=update_fields)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 762, in save_base
updated = self._save_table(raw, cls, force_insert, force_update, using, update_fields)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 827, in _save_table
forced_update)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/base.py", line 877, in _do_update
return filtered._update(values) > 0
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/query.py", line 580, in _update
return query.get_compiler(self.db).execute_sql(CURSOR)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 1062, in execute_sql
cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/models/sql/compiler.py", line 840, in execute_sql
cursor.execute(sql, params)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/utils.py", line 79, in execute
return super(CursorDebugWrapper, self).execute(sql, params)
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/utils.py", line 59, in execute
self.db.validate_no_broken_transaction()
File "/home/sanip/.virtualenvs/kobocat/lib/python2.7/site-packages/django/db/backends/base/base.py", line 327, in validate_no_broken_transaction
"An error occurred in the current transaction. You can't "
TransactionManagementError: An error occurred in the current transaction. You can't execute queries until the end of the 'atomic' block.
Начиная с трассировки, ошибка указывается в следующем коде:
def perform_create(self, serializer):
is_survey = self.request.data.get('is_survey', False)
fxf = serializer.save(is_survey=is_survey, is_deployed=True)
if not fxf.project:
fxf.from_project = False
fxf.save() #<<--here
if fxf.project:
if not fxf.is_survey:
org = fxf.project.organization
fxf.logs.create(source=self.request.user, type=18, title="General",
organization=org,
project = fxf.project,
content_object=fxf,
extra_object=fxf.project,
description='{0} assigned new General form {1} to {2} '.format(
self.request.user.get_full_name(),
fxf.xf.title,
fxf.project.name))
else:
org = fxf.site.project.organization
fxf.logs.create(source=self.request.user, type=19, title="General",
organization=org,
project=fxf.site.project,
site = fxf.site,
content_object=fxf,
extra_object=fxf.site,
description='{0} assigned new General form {1} to {2} '.format(
self.request.user.get_full_name(),
fxf.xf.title,
fxf.site.name
))
perform_create
- это метод внутри набора, который используется при назначении формы проекту.