def process(self, metric, handler):
        """
        process a single diamond metric
        @type metric: diamond.metric.Metric
        @param metric: metric to process
        @type handler: diamond.handler.sentry.SentryHandler
        @param handler: configured Sentry graphite handler
        @rtype None
        """
        match = self.regexp.match(metric.path)
        if match:
            minimum = Minimum(metric.value, self.min)
            maximum = Maximum(metric.value, self.max)

            if minimum.is_error or maximum.is_error:
                self.counter_errors += 1
                message = "%s Warning on %s: %.1f" % (self.name,
                                                      handler.hostname,
                                                      metric.value)
                culprit = "%s %s" % (handler.hostname, match.group('path'))
                handler.raven_logger.error(message, extra={
                    'culprit': culprit,
                    'data': {
                        'metric prefix': match.group('prefix'),
                        'metric path': match.group('path'),
                        'minimum check': minimum.verbose_message,
                        'maximum check': maximum.verbose_message,
                        'metric original path': metric.path,
                        'metric value': metric.value,
                        'metric precision': metric.precision,
                        'metric timestamp': metric.timestamp,
                        'minimum threshold': self.min,
                        'maximum threshold': self.max,
                        'path regular expression': self.regexp.pattern,
                        'total errors': self.counter_errors,
                        'total pass': self.counter_pass,
                        'hostname': handler.hostname
                    }
                }
                )
            else:
                self.counter_pass += 1

        process a single diamond metric
        @type metric: diamond.metric.Metric
        @param metric: metric to process
        @type handler: diamond.handler.sentry.SentryHandler
        @param handler: configured Sentry graphite handler
        @rtype None
        
src/diamond/handler/sentry.py