Re: [Twisted-Python] Return only when value/handle is available

2014-09-03 Thread exarkun
On 05:52 pm, vikas.c.ku...@oracle.com wrote: Hi Jonas, This is nice. But still we are retrying it repeatedly at regular interval(10). Can't we get the notified asynchronously as and when handle is available. You tell us. What's a handle? Where do you get it from? Does that system produce

Re: [Twisted-Python] Return only when value/handle is available

2014-09-03 Thread vikas kumar
Hi Jonas, This is nice. But still we are retrying it repeatedly at regular interval(10). Can't we get the notified asynchronously as and when handle is available. Regards Vikas On 9/3/2014 6:10 PM, Jonas Brunsgaard wrote: I would fiddle around with something like this. from twisted.internet

Re: [Twisted-Python] Return only when value/handle is available

2014-09-03 Thread Adi Roiban
One option in which we have both reactor and deferred :) def do_low_level_stuff(deferred) try: deferred.callback(self.get_handle()) except SystemDelayException: reactor.callLater(1, do_low_level_stuff, deferred) def do_stuff(): deferred = Deferred() do_low_level_st

Re: [Twisted-Python] Return only when value/handle is available

2014-09-03 Thread Jonas Brunsgaard
I would fiddle around with something like this. from twisted.internet.defer import inlineCallbacks, returnValue, Deferred from twisted.internet import reactor @inlineCallbacks def foo(self, retries=10, interval=10): while True: try: returnValue((yield self.get_handle()))

[Twisted-Python] Return only when value/handle is available

2014-09-03 Thread vikas kumar
Hi, I am little new to twisted. I've a function(get_handle) which returns a handle. But get_handle() may throw an exception(SystemDelayException) because of some delay in system. My requirement is : When I get SystemDelayException re-attempt get_handle() and return only when handle is availabl