Function validateLabelValues

prometheus/labels.go:166–184

(vals []string, expectedNumberOfValues int)

}

func validateLabelValues(vals []string, expectedNumberOfValues int) error {
	if len(vals) != expectedNumberOfValues {
		// The call below makes vals escape, copy them to avoid that.
		vals := append([]string(nil), vals...)
		return fmt.Errorf(
			"%w: expected %d label values but got %d in %#v",
			errInconsistentCardinality, expectedNumberOfValues,
			len(vals), vals,
		)
	}

	for _, val := range vals {
		if !utf8.ValidString(val) {
			return fmt.Errorf("label value %q is not valid UTF-8", val)
		}
	}

	return nil
}

func checkLabelName(l string) bool {
	//nolint:staticcheck // TODO: Don't use deprecated model.NameValidationScheme.