[Twisted-Python] Asynchronously initializing objects in twisted.web?
Alexey Panyovin
a at runtel.ru
Tue Sep 8 12:41:06 MDT 2015
from twisted.webimport server, resource
from twisted.internetimport reactor, defer
class Simple(resource.Resource):
isLeaf =True def render_GET(self, request):
return "<html>Hello, world!</html>" def call_me():
d = defer.Deferred()
print "Get something" d.callback("success")
return d
def run_web(_):
print "run_web" site = server.Site(Simple())
reactor.listenTCP(8080, site)
d = call_me()
d.addCallback(run_web)
reactor.run()
--
Alex
08.09.15 17:51, Nagy, Attila пишет:
> Hi,
>
> I wonder, if I have this example program:
> https://twistedmatrix.com/documents/current/web/howto/using-twistedweb.html#site-objects
>
>
> how do I initialize an external resource (like a dictionary, which is
> fetched from a database) with asynchronous twisted tools, but before
> the HTTP server starts listening on its port?
> The goal here is that the HTTP server shouldn't start until it can
> fetch the desired data. Of course I can do this in a synchronous way,
> but it feels so unnatural and bad practice to fetch the same stuff
> synchronously on initialization and asynchronously when the
> program/reactor is running (often with different libraries).
>
> Thanks,
>
> _______________________________________________
> Twisted-Python mailing list
> Twisted-Python at twistedmatrix.com
> http://twistedmatrix.com/cgi-bin/mailman/listinfo/twisted-python
-------------- next part --------------
An HTML attachment was scrubbed...
URL: </pipermail/twisted-python/attachments/20150908/f200ba5d/attachment-0002.html>
More information about the Twisted-Python
mailing list