in sandbox/CWMetricStreamExporter/lambda/main.go [130:140]
func handleAddLabels(valueType Values, metricName string, namespace string, dimensions Dimensions) []*prompb.Label {
var labels []*prompb.Label
metricNameLabel := createMetricNameLabel(metricName, valueType)
namespaceLabel := createNamespaceLabel(namespace)
dimensionLabels := createDimensionLabels(dimensions)
labels = append(labels, dimensionLabels...)
labels = append(labels, &metricNameLabel, &namespaceLabel)
return labels
}