Reports the crawler uuid to redis

def report_self(self):
        '''
        Reports the crawler uuid to redis
        '''
        self.logger.debug("Reporting self id", extra={'uuid':self.my_uuid})
        key = "stats:crawler:{m}:{s}:{u}".format(
            m=socket.gethostname(),
            s=self.spider.name,
            u=self.my_uuid)
        self.redis_conn.set(key, time.time())
        self.redis_conn.expire(key, self.ip_update_interval * 2)