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我有一个django视图,它通过API POST请求将对象ID添加到队列中。然后,我有一个芹菜任务,使id出列并做一些处理。有时,芹菜任务会抛出一个错误,指出该对象不存在。我在视图中添加了5秒的延迟,并且我再也看不到这个错误了。django orm是否立即创建对象
View:
def create(self, request):
user = request.user
serializer = UnpredictedSentenceSerializer(data=request.data)
if serializer.is_valid():
saved_raw_text = UnpredictedSentence.objects.create(
raw_text=serializer.data['raw_text'],
user=user)
prediction.apply_async(
args=[saved_raw_text.pk],
countdown=5
)
print(saved_raw_text.pk)
return Response(status=status.HTTP_200_OK)
else:
return Response(
serializer.errors, status=status.HTTP_400_BAD_REQUEST)
Task:
@task()
def prediction(id):
print(id)
print(type(id))
UnpredictedSentence.objects.get(pk=id)
try:
un_sent = UnpredictedSentence.objects.get(pk=id)
except UnpredictedSentence.DoesNotExist:
un_sent = None
if un_sent:
print(type(un_sent.raw_text))
text = json.loads(un_sent.raw_text)
results = kudos.main(text['raw_text'])
PredictedSentence.objects.create(
cleaned_text=results['cleaned_text'],
raw_text=results['raw_text'],
sentiment=results['sentiment'],
user=un_sent.user)
print(results)
只是一个一般的评论,另外,使用睡眠来解决竞争条件几乎总是一个坏主意。芹菜任务可以检查它是否存在,如果不存在,请将它放在队列中供其他工人使用? – FlipperPA