storage/remote/codec.go
func LabelProtosToMetric(labelPairs []*prompb.Label) model.Metric {
	metric := make(model.Metric, len(labelPairs))
	for _, l := range labelPairs {
		metric[model.LabelName(l.Name)] = model.LabelValue(l.Value)
	}
	return metric
}
func LabelProtosToMetric(labelPairs []*prompb.Label) model.Metric {
	metric := make(model.Metric, len(labelPairs))
	for _, l := range labelPairs {
		metric[model.LabelName(l.Name)] = model.LabelValue(l.Value)
	}
	return metric
}
// LabelProtosToMetric unpack a []*prompb.Label to a model.Metric