Implementing read-only mode

Greetings Pyloneers, 
  I'm implementing a 2-level read only mode in my Pylons
app.  First
level is global and prevent any updates: that would be
turned on while
performing major software updates, DB sync, raid-5 rebuild,
or who
knows what.  Second level is for soft-ban: a banned IP range
is
prevented from posting updates but it still can access the
content.

I put all the cute warnings at the right places and do the
right
checks but I know I'll forget a place or two so I want to
put my
Alchemy session in read-only mode.  I'm running Alchemy 0.3;
here is
how I do, in lib/base.py:

    def abort_ro():
        raise Exception("Write request while in
read-only mode")

    class BaseController(WSGIController):
        def __call__(self, environ, start_response):
            # Insert any code to be run per request here.
The Routes match
            # is under environ['pylons.routes_dict'] should
you want to check
            # the action or route vars here
            model.ctx.current = make_session()
            if asbool(config["site_readonly"]):
                model.ctx.current.flush = abort_ro

It works but I'm sure there is a better way to do it.  Any
advice on
that?

-- 
Yannick Gingras

--~--~---------~--~----~------------~-------~--~----~
You received this message because you are subscribed to the
Google Groups "pylons-discuss" group.
To post to this group, send email to pylons-discussgooglegroups.com
To unsubscribe from this group, send email to
pylons-discuss-unsubscribegooglegroups.com
For more options, visit this group at h
ttp://groups.google.com/group/pylons-discuss?hl=en
-~----------~----~----~----~------~----~------~--~---