[Twisted-Python] producer / consumer question

Markus Schiltknecht markus at bluegap.ch
Wed Jul 4 12:13:05 EDT 2007


I have yet another question...  a producer has to learn about it's 
consumer somehow, otherwise it would not know where to write it's data to.

But the proposed interface is exactly vice versa: the IConsumer 
interface has a registerProducer() method. Now, that would be fine, if 
that did all the setup between a producer and a consumer. But AFACIS in 
the twisted code, registerProducer() does not link itself with the 
producer. Instead, the producers I've inspected (i.e. FileSender) 
require an explicit initialization with a given consumer.

Why is that? What's the best way to associate a producer with a 
consumer? Is something like the following okay:

def associateProducerConsumer(prod, cons):
     prod.consumer = cons
     cons.registerProducer(prod, ISeekableProducer.providedBy(prod))



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