Django子流程 [英] Django subprocess

问题描述

如果这是重复的内容，我真的很抱歉，但是我一直在搜索，但是没有找到答案.

I'm really sorry if this is a duplicate, but I have been searching, and haven't been able to find the answer.

在Django中，我想做类似的事情(请参阅注释):

In Django I want to do something like (see the comments):

# we have a file in our database...
v = create_file_entry(clean_data, ip_address)
# next, start a *background process* to upload the file somewhere else...    
p = Process(target=upload_file, args=(filepath,v))
p.start()
p.join()
# ...we don't care about the result of the process, or 
# wait for it to finish, just redirect the user to success *immediately*
return HttpResponseRedirect('/success/')

我希望代码启动upload_file进程，然后将用户重定向到成功页面立即，而upload_file进程在后台运行(速度很慢).我以为子进程可以做到这一点.

I want the code to start the upload_file process, and then redirect the user to the success page immediately, while the upload_file process runs in the background (it's slow). I thought a subprocess might do this.

不幸的是，上面的代码似乎要等到upload_file进程完成之后，才能将用户重定向到成功页面，这不是我所需要的.

Unfortunately the code above seems to wait for the upload_file process to finish before heading before redirecting the user to the success page, which is not what I need.

请注意，upload_file是我的views.py文件中的Python函数.我听说过popen-我想我可以将def upload_file转换为独立的Python脚本并从命令行运行它-是否可以根据需要开始运行然后立即重定向用户?还是应该使用某种线程/进程?

Note that upload_file is a Python function in my views.py file. I've heard about popen - I guess I could convert def upload_file into a stand-alone Python script and run it from the command line - would that start running and then immediately redirect the user, as I want? Or should I be using some kind of thread/process?

---- UPDATE -----

我想我可能已经想通了...如果我只是执行p.start()而不是p.join()，那么该过程将立即重定向.对此有什么危险吗?

I think I might have figured it out... if I just do p.start() and NOT p.join(), then the process redirects immediately. Is there anything dangerous about this, though?

推荐答案

考虑编写一个单独的守护进程进行处理，并通过消息队列与之通信.

Consider writing a separate daemon for the processing and communicating with it via a message queue.

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