如何使用 mod_wsgi 运行 django 并使用多进程模块？

发布于 2024-11-27 21:11:01 字数 1197 浏览 1 评论 0原文

我正在处理的工作流程（用户方面）如下所示：

用户使用表单提交信息和文件保存
表单完成
其他保存后处理

这很好，但保存后处理需要相当长的时间，所以我我希望在后台执行此操作，并向消息发出 HttpResponseRedirect，通知用户处理正在进行，请稍后返回。不幸的是，这似乎不起作用；我现在得到的是这样的：

    if form.is_valid():
        p = multiprocessing.Process(target=form.save)
        p.start()
        return HttpResponseRedirect('/running')

但是我得到的错误是这样的：

IOError at /content/script/new/
sys.stdout access restricted by mod_wsgi
...
/usr/lib/python2.6/multiprocessing/forking.py in __init__
    # We define a Popen class similar to the one from subprocess, but
    # whose constructor takes a process object as its argument.
    #
    class Popen(object):
        def __init__(self, process_obj):
    >>>>        sys.stdout.flush() ...
            sys.stderr.flush()
            self.returncode = None
            self.pid = os.fork()
            if self.pid == 0:
                if 'random' in sys.modules:
▼ Local vars
Variable    Value
process_obj 
<Process(Process-1, initial)>
self    
<multiprocessing.forking.Popen object at 0xb8a06dec>

python 有更神奇的方法来做到这一点吗？姜戈有吗？如果没有，我怎样才能继续使用多重处理？

原文

The workflow I am dealing with (user-wise) looks like this:

User submits information and files with a form
Form is saved
Additional post-save processing is done

This is fine, but the post-save processing takes quite a while, so I'm looking to do it in the background and issue an HttpResponseRedirect to a message informing the user that processing is happening and to please return later. Unfortunately, this doesn't seem to be working; what I've got at the moment is this:

    if form.is_valid():
        p = multiprocessing.Process(target=form.save)
        p.start()
        return HttpResponseRedirect('/running')

But the error that I get back is this:

IOError at /content/script/new/
sys.stdout access restricted by mod_wsgi
...
/usr/lib/python2.6/multiprocessing/forking.py in __init__
    # We define a Popen class similar to the one from subprocess, but
    # whose constructor takes a process object as its argument.
    #
    class Popen(object):
        def __init__(self, process_obj):
    >>>>        sys.stdout.flush() ...
            sys.stderr.flush()
            self.returncode = None
            self.pid = os.fork()
            if self.pid == 0:
                if 'random' in sys.modules:
▼ Local vars
Variable    Value
process_obj 
<Process(Process-1, initial)>
self    
<multiprocessing.forking.Popen object at 0xb8a06dec>

Does python have a more magical way to do this? Does Django? If not, how can I go ahead and use multiprocessing?

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