Refactor controller metrics interface

internal/ingress/metric/dummy.go

@@ -0,0 +1,43 @@
+/*
+Copyright 2018 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 metric
+
+import "k8s.io/ingress-nginx/internal/ingress"
+
+// DummyCollector dummy implementation for mocks in tests
+type DummyCollector struct{}
+
+// ConfigSuccess ...
+func (dc DummyCollector) ConfigSuccess(uint64, bool) {}
+
+// IncReloadCount ...
+func (dc DummyCollector) IncReloadCount() {}
+
+// IncReloadErrorCount ...
+func (dc DummyCollector) IncReloadErrorCount() {}
+
+// RemoveMetrics ...
+func (dc DummyCollector) RemoveMetrics(ingresses, endpoints []string) {}
+
+// Start ...
+func (dc DummyCollector) Start() {}
+
+// Stop ...
+func (dc DummyCollector) Stop() {}
+
+// SetSSLExpireTime ...
+func (dc DummyCollector) SetSSLExpireTime([]*ingress.Server) {}