Split implementations from generic code

core/pkg/ingress/controller/metrics.go

@@ -0,0 +1,60 @@
+/*
+Copyright 2015 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
+package controller
+
+import "github.com/prometheus/client_golang/prometheus"
+
+const (
+	ns          = "ingress_controller"
+	operation   = "count"
+	reloadLabel = "reloads"
+)
+
+func init() {
+	prometheus.MustRegister(reloadOperation)
+	prometheus.MustRegister(reloadOperationErrors)
+
+	reloadOperationErrors.WithLabelValues(reloadLabel).Set(0)
+	reloadOperation.WithLabelValues(reloadLabel).Set(0)
+}
+
+var (
+	reloadOperation = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: ns,
+			Name:      "success",
+			Help:      "Cumulative number of Ingress controller reload operations",
+		},
+		[]string{operation},
+	)
+	reloadOperationErrors = prometheus.NewCounterVec(
+		prometheus.CounterOpts{
+			Namespace: ns,
+			Name:      "errors",
+			Help:      "Cumulative number of Ingress controller errors during reload operations",
+		},
+		[]string{operation},
+	)
+)
+
+func incReloadCount() {
+	reloadOperation.WithLabelValues(reloadLabel).Inc()
+}
+
+func incReloadErrorCount() {
+	reloadOperationErrors.WithLabelValues(reloadLabel).Inc()
+}