This module contains an implementation of a Twisted Request that allows Resources rendering to return Deferreds instead of NOT_DONT_YET. By using deferreds one can ensure that a request will always be finished regardless of any errors while rendering, and allows for the convenient use of inlineCallbacks.
The source code for Twisted Deferred Request is available from the GitHub repo cpburnz/twisted-deferred-request.
Here's an example using the deferred request:
from twisted.internet import defer, reactor
from twisted.web import resource, server
from deferred_request import DeferredRequest
class DeferredResource(resource.Resource):
@defer.inlineCallbacks
def render(self, request):
data = yield deferredDatabaseRequest()
request.write(data)
request.finish() # This is optional
class Site(server.Site):
requestFactory = DeferredRequest
displayTracebacks = True
def main():
resrc = DeferredResource()
site = server.Site(resrc)
reactor.listenTCP(8080, site)
reactor.run()
return 0
if __name__ == '__main__':
exit(main())