do not check cert if not used

Author: elfranne

main.go

@@ -83,22 +83,22 @@ func main() {
 }
 
 func checkArgs(event *corev2.Event) (int, error) {
+	if len(plugin.CertFile) > 0 || len(plugin.KeyFile) > 0 || len(plugin.TrustedCAFile) > 0{ 
+		if _, err := os.Stat(plugin.CertFile); errors.Is(err, os.ErrNotExist) {
+			fmt.Printf("could not load certificate(%s): %v", plugin.CertFile, err)
+			return sensu.CheckStateCritical, nil
+		}
 
-	if _, err := os.Stat(plugin.CertFile); errors.Is(err, os.ErrNotExist) {
-		fmt.Printf("could not load certificate(%s): %v", plugin.CertFile, err)
-		return sensu.CheckStateCritical, nil
-	}
-
-	if _, err := os.Stat(plugin.KeyFile); errors.Is(err, os.ErrNotExist) {
-		fmt.Printf("could not load certificate key(%s): %v", plugin.KeyFile, err)
-		return sensu.CheckStateCritical, nil
-	}
+		if _, err := os.Stat(plugin.KeyFile); errors.Is(err, os.ErrNotExist) {
+			fmt.Printf("could not load certificate key(%s): %v", plugin.KeyFile, err)
+			return sensu.CheckStateCritical, nil
+		}
 
-	if _, err := os.Stat(plugin.TrustedCAFile); errors.Is(err, os.ErrNotExist) {
-		fmt.Printf("could not load CA(%s): %v", plugin.TrustedCAFile, err)
-		return sensu.CheckStateCritical, nil
+		if _, err := os.Stat(plugin.TrustedCAFile); errors.Is(err, os.ErrNotExist) {
+			fmt.Printf("could not load CA(%s): %v", plugin.TrustedCAFile, err)
+			return sensu.CheckStateCritical, nil
+		}
 	}
-
 	return sensu.CheckStateOK, nil
 }