Process a received timer event

        :param key: Key of timer
        :param fields: Received fields

def process_timer(self, key, fields):
        """
        Process a received timer event

        :param key: Key of timer
        :param fields: Received fields
        """
        try:
            if key not in self.timers:
                self.timers[key] = []
            self.timers[key].append(float(fields[0]))
            if self.stats_seen >= maxint:
                self.logger.info("hit maxint, reset seen counter")
                self.stats_seen = 0
            self.stats_seen += 1
        except Exception as err:
            self.logger.info("error decoding timer event: %s" % err)
            if self.debug:
                print "error decoding timer event: %s" % err