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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def _hdfs_datanode_metrics(self, beans, tags):
 """ Process HDFS Datanode metrics from given beans """

        # Only get the first bean
        bean = next(iter(beans))
        bean_name = bean.get('name')

        self.log.debug("Bean name retrieved: {}".format(bean_name))

        for metric, (metric_name, metric_type) in iteritems(self.HDFS_METRICS):
            metric_value = bean.get(metric)
            if metric_value is not None:
                self._set_metric(metric_name, metric_type, metric_value, tags)