From 89cad3975daabe97abba0d425226ee5343b64f42 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Drei=C3=9Fig?= <f30@f30.me>
Date: Sun, 26 Jul 2020 16:27:04 +0200
Subject: [PATCH] Checker: Don't access undefined variable when not using
 metrics

---
 src/ctf_gameserver/checker/master.py | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/src/ctf_gameserver/checker/master.py b/src/ctf_gameserver/checker/master.py
index 06f1193..ce04622 100644
--- a/src/ctf_gameserver/checker/master.py
+++ b/src/ctf_gameserver/checker/master.py
@@ -205,10 +205,11 @@ def sigterm_handler(_, __):
         if master_loop.shutting_down and master_loop.get_running_script_count() == 0:
             break
 
-    metrics_server_process.terminate()
-    metrics_collector_process.terminate()
-    metrics_server_process.join()
-    metrics_collector_process.join()
+    if args.metrics_listen is not None:
+        metrics_server_process.terminate()
+        metrics_collector_process.terminate()
+        metrics_server_process.join()
+        metrics_collector_process.join()
 
     return os.EX_OK