wip: migrate to mono-repo. SPN has already been moved to spn/

service/nameserver/metrics.go

@@ -0,0 +1,42 @@
+package nameserver
+
+import (
+	"github.com/safing/portbase/api"
+	"github.com/safing/portbase/config"
+	"github.com/safing/portbase/metrics"
+)
+
+var (
+	requestsHistogram    *metrics.Histogram
+	totalHandledRequests *metrics.Counter
+)
+
+func registerMetrics() (err error) {
+	requestsHistogram, err = metrics.NewHistogram(
+		"nameserver/request/duration/seconds",
+		nil,
+		&metrics.Options{
+			Permission:     api.PermitUser,
+			ExpertiseLevel: config.ExpertiseLevelExpert,
+		},
+	)
+	if err != nil {
+		return err
+	}
+
+	totalHandledRequests, err = metrics.NewCounter(
+		"nameserver/request/total",
+		nil,
+		&metrics.Options{
+			InternalID:     "handled_dns_requests",
+			Permission:     api.PermitUser,
+			ExpertiseLevel: config.ExpertiseLevelExpert,
+			Persist:        true,
+		},
+	)
+	if err != nil {
+		return err
+	}
+
+	return nil
+}