Function formatLabels

internal/exporter/export.go:161–178

formatLabels converts a metric name and key-value map of labels to a single string for exporting to the correct output format for each export target. ksep and sep mark what to use for key/val separator, and between label separators respoectively. If not empty, rep is used to replace cases of ksep an

(name string, m map[string]string, ksep, sep, rep string)

// ksep and sep mark what to use for key/val separator, and between label separators respoectively.
// If not empty, rep is used to replace cases of ksep and sep in the original strings.
func formatLabels(name string, m map[string]string, ksep, sep, rep string) string {
	r := name
	if len(m) > 0 {
		var keys []string
		for k := range m {
			keys = append(keys, k)
		}
		sort.Strings(keys)
		var s []string
		for _, k := range keys {
			k1 := strings.ReplaceAll(strings.ReplaceAll(k, ksep, rep), sep, rep)
			v1 := strings.ReplaceAll(strings.ReplaceAll(m[k], ksep, rep), sep, rep)
			s = append(s, fmt.Sprintf("%s%s%s", k1, ksep, v1))
		}
		return r + sep + strings.Join(s, sep)
	}
	return r
}

// Format a LabelSet into a string to be written to one of the timeseries
// sockets.