init

app/main/events.py

@@ -0,0 +1,29 @@
+import json
+
+import pyinotify
+
+from .. import socketio
+
+thread = None
+
+
+class ModHandler(pyinotify.ProcessEvent):
+    def process_IN_CLOSE_WRITE(self, evt):
+        with open("data/data.json") as json_file:
+            data = json.load(json_file)
+        socketio.emit("file_updated", data)
+
+
+def background_thread():
+    handler = ModHandler()
+    wm = pyinotify.WatchManager()
+    notifier = pyinotify.Notifier(wm, handler)
+    wm.add_watch("data/data.json", pyinotify.IN_CLOSE_WRITE)
+    notifier.loop()
+
+
+@socketio.on("connect")
+def update_data():
+    global thread
+    if thread is None:
+        thread = socketio.start_background_task(target=background_thread)