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May 4, 2012 17:58
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A short script exploring Redis pubsub functions in Python
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| import redis | |
| import threading | |
| class Listener(threading.Thread): | |
| def __init__(self, r, channels): | |
| threading.Thread.__init__(self) | |
| self.redis = r | |
| self.pubsub = self.redis.pubsub() | |
| self.pubsub.subscribe(channels) | |
| def work(self, item): | |
| print item['channel'], ":", item['data'] | |
| def run(self): | |
| for item in self.pubsub.listen(): | |
| if item['data'] == "KILL": | |
| self.pubsub.unsubscribe() | |
| print self, "unsubscribed and finished" | |
| break | |
| else: | |
| self.work(item) | |
| if __name__ == "__main__": | |
| r = redis.Redis() | |
| client = Listener(r, ['test']) | |
| client.start() | |
| r.publish('test', 'this will reach the listener') | |
| r.publish('fail', 'this will not') | |
| r.publish('test', 'KILL') |
hi Delsss, what Redis version did you mean?
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On some redis version, the client subscriber can't be the same as client publisher, which means:
r = redis.Redis()
client = Listener(redis.Redis(), ["test"])
Is a better version...