Use explicit name validation schemes

Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>

Author: aknuds1

prometheus/desc.go

@@ -95,7 +95,8 @@ func (v2) NewDesc(fqName, help string, variableLabels ConstrainableLabels, const
 		help:           help,
 		variableLabels: variableLabels.compile(),
 	}
-	if !model.IsValidMetricName(model.LabelValue(fqName)) {
+	//nolint:staticcheck. // TODO: Don't use deprecated model.NameValidationScheme.
+	if !model.NameValidationScheme.IsValidMetricName(fqName) {
 		d.err = fmt.Errorf("%q is not a valid metric name", fqName)
 		return d
 	}

prometheus/internal/go_runtime_metrics.go

@@ -67,7 +67,7 @@ func RuntimeMetricsToProm(d *metrics.Description) (string, string, string, bool)
 	}
 
 	// Our current conversion moves to legacy naming, so use legacy validation.
-	valid := model.IsValidLegacyMetricName(namespace + "_" + subsystem + "_" + name)
+	valid := model.LegacyValidation.IsValidMetricName(namespace + "_" + subsystem + "_" + name)
 	switch d.Kind {
 	case metrics.KindUint64:
 	case metrics.KindFloat64:

prometheus/labels.go

@@ -184,5 +184,6 @@ func validateLabelValues(vals []string, expectedNumberOfValues int) error {
 }
 
 func checkLabelName(l string) bool {
-	return model.LabelName(l).IsValid() && !strings.HasPrefix(l, reservedLabelPrefix)
+	//nolint:staticcheck // TODO: Don't use deprecated model.NameValidationScheme.
+	return model.NameValidationScheme.IsValidLabelName(l) && !strings.HasPrefix(l, reservedLabelPrefix)
 }

prometheus/push/push.go

@@ -182,7 +182,8 @@ func (p *Pusher) Error() error {
 // For convenience, this method returns a pointer to the Pusher itself.
 func (p *Pusher) Grouping(name, value string) *Pusher {
 	if p.error == nil {
-		if !model.LabelName(name).IsValid() {
+		//nolint:staticcheck // TODO: Don't use deprecated model.NameValidationScheme.
+		if !model.NameValidationScheme.IsValidLabelName(name) {
 			p.error = fmt.Errorf("grouping label has invalid name: %s", name)
 			return p
 		}