November 19, 2009 04:08PM
Piotr Sikora Wrote:
-------------------------------------------------------
> If you want to go that route then I believe that
> you could re-use a lot of
> code from ngx_supervisord[1]. Most of the code
> below line 993 ("nginx <>
> supervisord communication" comment) does exacly
> what you need (creating
> "fake request", connecting to upstream outside of
> "upstream {}" confing,
> etc).
>
> One thing you should know upfront is that I needed
> requests which would be
> totally independent from any real connections /
> requests (ngx_supervisord
> communicates with supervisord even when there are
> no requests - to shut down
> idle backends, for example), and that's why there
> is a lot of code to create
> "fake" connections, events and configs in
> ngx_supervisord_init. I'm pretty
> sure you could get away with pointing most of them
> to data from original
> request...
>
> Also, responses from supervisord are quite small,
> so I'm forcing nginx to
> read them into memory. You might need to use temp
> files for bigger things.
>
> [1] http://labs.frickle.com/nginx_ngx_supervisord/
>
> Best regards,
> Piotr Sikora < piotr.sikora@frickle.com >

My original version of this module (long-poll with a single backend, dynamically determined based on the incoming request), does something very similar to what you're doing. For the incoming request, it figures out the appropriate backend then configures the request's upstream and kicks off the proxying. For the multi-backend version, I'll likely need to do something similar to what you've done (i.e. creating requests completely separate from the actual, live request). I figure the trickiest part will be building those requests and getting them in to state that's usable by nginx.

I haven't entirely given up on the subrequests yet, though.

Thanks,
Shaun
Subject Author Posted

Parallel subrequests for multi-source long polling?

shaun November 18, 2009 01:30AM

Re: Parallel subrequests for multi-source long polling?

Piotr Sikora November 18, 2009 02:28AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 18, 2009 03:28AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 18, 2009 03:30AM

Re: Parallel subrequests for multi-source long polling?

shaun November 18, 2009 04:22AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 18, 2009 11:30PM

Re: Parallel subrequests for multi-source long polling?

shaun November 19, 2009 03:54AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 19, 2009 04:58AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 19, 2009 06:32AM

Re: Parallel subrequests for multi-source long polling?

shaun November 19, 2009 02:20PM

Re: Parallel subrequests for multi-source long polling?

Piotr Sikora November 19, 2009 03:28PM

Re: Parallel subrequests for multi-source long polling?

shaun November 19, 2009 04:08PM

Re: Parallel subrequests for multi-source long polling?

Piotr Sikora November 19, 2009 05:42PM

Re: Parallel subrequests for multi-source long polling?

shaun November 20, 2009 03:33AM

Re: Parallel subrequests for multi-source long polling?

Piotr Sikora November 20, 2009 04:48AM

Re: Parallel subrequests for multi-source long polling?

agentzh November 20, 2009 05:28AM

Re: Parallel subrequests for multi-source long polling?

shaun November 20, 2009 06:41AM

Re: Parallel subrequests for multi-source long polling?

shaun November 21, 2009 09:12PM

Re: Parallel subrequests for multi-source long polling?

Piotr Sikora November 21, 2009 10:10PM



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