MongoEngine并处理"UserWarning:在分叉之前打开MongoClient.使用connect = False创建MongoClient，或者在分叉之后创建客户端. [英] MongoEngine and dealing with "UserWarning: MongoClient opened before fork. Create MongoClient with connect=False, or create client after forking"

问题描述

我将Celery和MongoEngine用作Django应用程序的一部分.

I am using Celery and MongoEngine as part of my Django App with.

当celery @shared_task通过mongoengine模型类访问mongodb数据库时，我收到此警告:

I am getting this warning, when a celery @shared_task accesses the mongodb database via mongoengine model classes:

UserWarning: MongoClient opened before fork. Create MongoClient with
connect=False,or create client after forking. See PyMongo's
documentation for details:
http://api.mongodb.org/python/current/faq.html#using-pymongo-with-multiprocessing

它显然与mongoengine所基于的多处理和pyMongo有关.

It clearly has something to do with multiprocessing and pyMongo that is that mongoengine is based on.

我的问题是:

使用mongoengine避免此问题的最佳策略是什么?

What is the best strategy to avoid this issue with mongoengine?

请注意，我正在使用settings.py中的mongoengine连接到mongodb:

Please note that i am connecting to the mongodb with mongoengine in the settings.py:

mongoengine.connect('my_mongo_database_name', alias='default')

推荐答案

在线搜索了一下之后，我发现可以将附加参数传递给mongoengine.connect函数，附加参数将传递给底层PyMongo类和功能.

After searching a little bit online, i found out that it is possible to pass additional arguments to the mongoengine.connect function the additional arguments will be passed to the underlying PyMongo classes & functions.

所以我只是将mongoengine.connect()调用编辑为以下内容:

So i simply edited the mongoengine.connect() call to the following:

mongoengine.connect('my_mongo_database_name', alias='default', connect=False)

并且警告停止出现.尽管如此，我不确定这是否是处理警告的最佳方法.如果您有更好的答案，请发布它，我会很乐意对其进行测试并最终接受.

And the warning stopped appearing. None the less i am not sure this is the best way to deal with the warning. If you have a better answer please post it and i will gladly test it and eventually accept it.

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