Clean up meetings that are no longer known to the backend

bigbluebutton/api/bigbluebutton.py

@@ -191,6 +191,8 @@ class BigBlueButton:
         logger.info(f"Updating meetings on server {self.name}")
         res = self._request("getMeetings")
 
+        found_meeting_ids = []
+
         if "meetings" not in res or not res["meetings"] or not res["meetings"]["meeting"]:
             self.meetings.clear()
             logger.info(f"Cleared all meetings from server {self.name}")
@@ -211,6 +213,14 @@ class BigBlueButton:
 
                 meeting._update_from_response(meeting_dict)
 
+                # Track found IDs for later clean up
+                found_meeting_ids.append(meeting_id)
+
+        # Clean up meetings not known anymore
+        for meeting_id in list(self.meetings.keys()):
+            if meeting_id not in found_meeting_ids:
+                del self.meetings[meeting_id]
+
         return self.meetings
 
     def ssh_command(