[Web-SIG] Alternative to threading.local, based on the stack

[Manlio Perillo]

Iwan Vosloo ha scritto:
> Hi,
> 
> Many web frameworks and ORM tools have the need to propagate data
> depending on some or other context within which a request is dealt with.
> Passing it all via parameters to every nook of your code is cumbersome.
> 
> A lot of the frameworks use a thread local context to solve this
> problem. I'm assuming these are based on threading.local.  
> 
> (See, for example:
> http://www.sqlalchemy.org/docs/05/session.html#unitofwork_contextual )
> 
> Such usage assumes that one request is served per thread.
> 
> This is not necessarily the case.  (Twisted would perhaps be an example,
> but I have not checked how the twisted people deal with the issue.)
> 

The natural solution with WSGI is to store objects in the environ 
dictionary.

In fact in my web applications I always pass the environ dictionary 
explicitly to every functions.


 > [...]


Manlio Perillo