def runTransaction(self, attr, set_committing, *args, **kw):
self.beginTransaction()
max_db_retries = self.max_db_retries
result = None
conflict_exception = None
for n_try in range(min(1, max_db_retries + 1)):
try:
old_site = getSite()
setSite(self.schooltool_app)
callable = getattr(self.remote_task, attr)
result = callable(*args, **kw)
setSite(old_site)
if set_committing:
try:
status = TaskWriteState(self.request.id)
status.set_committing()
except Exception:
pass # don't care really
except ConflictError, conflict:
# Transaction conflict, let's repeat
conflict_exception = conflict
except Exception:
failure = FormattedTraceback()
try:
self.abortTransaction()
except Exception:
failure.append(FormattedTraceback())
raise failure
def __init__(self, task_id):
if task_id is None:
self.task_state = None
else:
self.task_state = TaskWriteState(task_id)
Timer.__init__(self)
