Validate that permanent problem has preset default condition

pkg/custompluginmonitor/types/config.go

@@ -141,5 +141,22 @@ func (cpc CustomPluginConfig) Validate() error {
 		}
 	}
 
+	for _, rule := range cpc.Rules {
+		if rule.Type != types.Perm {
+			continue
+		}
+		conditionType := rule.Condition
+		defaultConditionExists := false
+		for _, cond := range cpc.DefaultConditions {
+			if conditionType == cond.Type {
+				defaultConditionExists = true
+				break
+			}
+		}
+		if !defaultConditionExists {
+			return fmt.Errorf("Permanent problem %s does not have preset default condition.", conditionType)
+		}
+	}
+
 	return nil
 }

pkg/custompluginmonitor/types/config_test.go

@@ -20,6 +20,8 @@ import (
 	"reflect"
 	"testing"
 	"time"
+
+	"k8s.io/node-problem-detector/pkg/types"
 )
 
 func TestCustomPluginConfigApplyConfiguration(t *testing.T) {
@@ -279,6 +281,55 @@ func TestCustomPluginConfigValidate(t *testing.T) {
 			},
 			IsError: true,
 		},
+		"permanent problem has preset default condition": {
+			Conf: CustomPluginConfig{
+				Plugin: customPluginName,
+				PluginGlobalConfig: pluginGlobalConfig{
+					InvokeInterval:  &defaultInvokeInterval,
+					Timeout:         &defaultGlobalTimeout,
+					MaxOutputLength: &defaultMaxOutputLength,
+					Concurrency:     &defaultConcurrency,
+				},
+				DefaultConditions: []types.Condition{
+					{
+						Type:    "TestCondition",
+						Reason:  "TestConditionOK",
+						Message: "Test condition is OK.",
+					},
+				},
+				Rules: []*CustomRule{
+					{
+						Type:      types.Perm,
+						Condition: "TestCondition",
+						Reason:    "TestConditionFail",
+						Path:      "../plugin/test-data/ok.sh",
+						Timeout:   &normalRuleTimeout,
+					},
+				},
+			},
+			IsError: false,
+		},
+		"permanent problem does not have preset default condition": {
+			Conf: CustomPluginConfig{
+				Plugin: customPluginName,
+				PluginGlobalConfig: pluginGlobalConfig{
+					InvokeInterval:  &defaultInvokeInterval,
+					Timeout:         &defaultGlobalTimeout,
+					MaxOutputLength: &defaultMaxOutputLength,
+					Concurrency:     &defaultConcurrency,
+				},
+				Rules: []*CustomRule{
+					{
+						Type:      types.Perm,
+						Condition: "TestCondition",
+						Reason:    "TestConditionFail",
+						Path:      "../plugin/test-data/ok.sh",
+						Timeout:   &normalRuleTimeout,
+					},
+				},
+			},
+			IsError: true,
+		},
 	}
 
 	for desp, utMeta := range utMetas {