> > I need to do some cleanup after sending a response to the client. That
> > means I want to send response without returning a response object.
> > Something like-
>
> > def handler(request):
> > # ...
> > resp = HttpResponse(data)
> > # send response in some way (?)
> > # clean up, log, etc..
>
> > I know its unusual to do this, but is there a way to achieve it? If
> > not directly, then a way to setup the cleanup code to run after the
> > response has been sent will also do.
>
> What sort of things do you need to do that can't be done before sending
> back the response? Most of the things I can think of (such as the time
> taken to send the response) are out of scope for Django, since it lives
> at a layer below the stuff that actually interacts with the webserver.
Thanks for the reply Malcolm.
My actual requirement is to convert a video file from one format to
another and send the output as a stream, here is an example that uses
ffmpeg to do the conversion. The handler captures the result at stdout
and sends it by wrapping in a FileWrapper.
def handler(request):
# ...
cmd = "ffmpeg -i %s -f flv -" % filename
subp = subprocess.Popen(cmd, stdout=subprocess.PIPE)
result = subp.stdout
wrapper = FileWrapper(result)
response = HttpResponse(wrapper)
# need to wait till the response has actually been sent ..
if subp.wait() != 0:
# something went wrong, log it..
I want to stream as soon as possible without loading the entire result
in memory and preferably without having to save the result to disk. I
have ommitted the code for setting headers, etc. for clarity. Any
ideas or suggestions on how to go here?
Ram
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