Validate bootstrap required components

cmd/gotk/bootstrap.go

@@ -53,6 +53,7 @@ var (
 	bootstrapBranch             string
 	bootstrapWatchAllNamespaces bool
 	bootstrapLogLevel           string
+	bootstrapRequiredComponents = []string{"source-controller", "kustomize-controller"}
 )
 
 const (
@@ -90,6 +91,12 @@ func bootstrapValidate() error {
 		return fmt.Errorf("log level %s is not supported, can be %v", bootstrapLogLevel, supportedLogLevels)
 	}
 
+	for _, component := range bootstrapRequiredComponents {
+		if !utils.containsItemString(bootstrapComponents, component) {
+			return fmt.Errorf("component %s is required", component)
+		}
+	}
+
 	return nil
 }