From 3bfe6db036b1bf0f0676f8b5fa2b05e0cad2aa6d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Krist=C3=B3f=20T=C3=B3th?= <kristof.toth@avatao.com>
Date: Mon, 13 May 2019 14:53:31 +0200
Subject: [PATCH] Avoid treating supervisord's SIGTERM as an error in
 CommandEventHandler

---
 lib/tfw/components/pipe_io_event_handler.py | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/lib/tfw/components/pipe_io_event_handler.py b/lib/tfw/components/pipe_io_event_handler.py
index d0eda41..f9cd567 100644
--- a/lib/tfw/components/pipe_io_event_handler.py
+++ b/lib/tfw/components/pipe_io_event_handler.py
@@ -127,6 +127,9 @@ class CommandEventHandler(PipeIOEventHandler):
     @terminate_process_on_failure
     def _monitor_proc(self):
         return_code = self._proc.wait()
+        if return_code == -int(SIGTERM):
+            # supervisord asked the program to terminate, this is fine
+            return
         if return_code != 0:
             _, stderr = self._proc.communicate()
             raise RuntimeError(f'Subprocess failed ({return_code})! Stderr:\n{stderr.decode()}')