1 files changed, 43 insertions, 0 deletions
diff --git a/plugin/template/metrics.go b/plugin/template/metrics.go
new file mode 100644
index 000000000..f602548f4
--- /dev/null
+++ b/plugin/template/metrics.go
@@ -0,0 +1,43 @@
+package template
+
+import (
+	"sync"
+
+	"github.com/coredns/coredns/plugin"
+
+	"github.com/prometheus/client_golang/prometheus"
+)
+
+// Metrics for template.
+var (
+	TemplateMatchesCount = prometheus.NewCounterVec(prometheus.CounterOpts{
+		Namespace: plugin.Namespace,
+		Subsystem: "template",
+		Name:      "matches_total",
+		Help:      "Counter of template regex matches.",
+	}, []string{"regex"})
+	TemplateFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
+		Namespace: plugin.Namespace,
+		Subsystem: "template",
+		Name:      "template_failures_total",
+		Help:      "Counter of go template failures.",
+	}, []string{"regex", "section", "template"})
+	TemplateRRFailureCount = prometheus.NewCounterVec(prometheus.CounterOpts{
+		Namespace: plugin.Namespace,
+		Subsystem: "template",
+		Name:      "rr_failures_total",
+		Help:      "Counter of mis-templated RRs.",
+	}, []string{"regex", "section", "template"})
+)
+
+// OnStartupMetrics sets up the metrics on startup.
+func OnStartupMetrics() error {
+	metricsOnce.Do(func() {
+		prometheus.MustRegister(TemplateMatchesCount)
+		prometheus.MustRegister(TemplateFailureCount)
+		prometheus.MustRegister(TemplateRRFailureCount)
+	})
+	return nil
+}
+
+var metricsOnce sync.Once