From fd080e9e4b20eab6dd54b545402bec123c44ee4b Mon Sep 17 00:00:00 2001
From: dgtlmoon <dgtlmoon@gmail.com>
Date: Mon, 4 Jul 2022 20:52:15 +0200
Subject: [PATCH] Handle SIGINT somewhat

---
 changedetectionio/changedetection.py | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/changedetectionio/changedetection.py b/changedetectionio/changedetection.py
index 2adf5ffc..ae6da9e2 100755
--- a/changedetectionio/changedetection.py
+++ b/changedetectionio/changedetection.py
@@ -4,6 +4,7 @@
 
 import getopt
 import os
+import signal
 import sys
 
 import eventlet
@@ -11,7 +12,25 @@ import eventlet.wsgi
 from . import store, changedetection_app, content_fetcher
 from . import __version__
 
+# Only global so we can access it in the signal handler
+datastore = None
+app = None
+
+def sigterm_handler(_signo, _stack_frame):
+    global app
+    global datastore
+
+    print('Shutdown: got SIGINT, writing DB')
+    datastore.sync_to_json()
+    print('sync_to_json() done')
+    eventlet.is_accepting = False
+    app.config.exit.set()
+
+
+
 def main():
+    global datastore
+    global app
     ssl_mode = False
     host = ''
     port = os.environ.get('PORT') or 5000
@@ -74,6 +93,7 @@ def main():
 
     datastore = store.ChangeDetectionStore(datastore_path=app_config['datastore_path'], version_tag=__version__)
     app = changedetection_app(app_config, datastore)
+    signal.signal(signal.SIGINT, sigterm_handler)
 
     # Go into cleanup mode
     if do_cleanup: