Add existing monitors into the problem daemon registration hook.

pkg/custompluginmonitor/custom_plugin_monitor.go

@@ -25,11 +25,22 @@ import (
 
 	"k8s.io/node-problem-detector/pkg/custompluginmonitor/plugin"
 	cpmtypes "k8s.io/node-problem-detector/pkg/custompluginmonitor/types"
+	"k8s.io/node-problem-detector/pkg/problemdaemon"
 	"k8s.io/node-problem-detector/pkg/types"
 	"k8s.io/node-problem-detector/pkg/util"
 	"k8s.io/node-problem-detector/pkg/util/tomb"
 )
 
+const CustomPluginMonitorName = "custom-plugin-monitor"
+
+func init() {
+	problemdaemon.Register(
+		CustomPluginMonitorName,
+		types.ProblemDaemonHandler{
+			CreateProblemDaemonOrDie: NewCustomPluginMonitorOrDie,
+			CmdOptionDescription:     "Set to config file paths."})
+}
+
 type customPluginMonitor struct {
 	config     cpmtypes.CustomPluginConfig
 	conditions []types.Condition

pkg/custompluginmonitor/custom_plugin_monitor_test.go

@@ -0,0 +1,31 @@
+/*
+Copyright 2019 The Kubernetes Authors All rights reserved.
+
+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 custompluginmonitor
+
+import (
+	"testing"
+
+	"github.com/stretchr/testify/assert"
+
+	"k8s.io/node-problem-detector/pkg/problemdaemon"
+)
+
+func TestRegistration(t *testing.T) {
+	assert.NotPanics(t,
+		func() { problemdaemon.GetProblemDaemonHandlerOrDie("custom-plugin-monitor") },
+		"Custom plugin monitor failed to register itself as a problem daemon.")
+}