Python C extension providing... Python's own API?

Graham Dumpleton Graham.Dumpleton at gmail.com
Tue Mar 27 04:48:09 CEST 2007


On Mar 27, 12:41 pm, "Graham Dumpleton" <Graham.Dumple... at gmail.com>
wrote:
> On the other hand, it might be useful in a standalone Python based
> WSGI web server which you have more direct control over.  It might
> take a bit of design work as to how to do it in practice, but you
> could create different sub interpreters through the module for
> distinct WSGI applications. The main interpreter could be running the
> web server and somehow then hand off a WSGI environ etc off to a
> manager module in the other sub interpreter that then deals with
> communicating with the WSGI application in that sub interpreter for
> that specific request. You could conceivably have a hand off
> arrangement whereby when an application code base changes that you
> start routing requests for URL subset to new instance of application
> in new sub interpreter and kill off old sub interpreter when able to.
> Would certainly be an interesting area to look at. For mod_wsgi at
> least though I ruled out allowing sub interpreters to be killed off
> and allowing reloading of a complete application by such a handoff
> mechanism as too dangerous a feature in an ISP based web hosting
> environment as user code could too easily hang the Apache process when
> trying to kill off the sub interpreter.

One more thought. It would actually be quite cute if you could make
this whole encapsulation of pushing a WSGI request into a distinct sub
interpreter a WSGI middleware component. That way you could just drop
it into any existing web server infrastructure that supports WSGI. Now
I'm getting really interested to have a play. :-)

Graham




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