fix(mastodon): close duplicate streaming connections

src/controller/mainController.py

@@ -473,6 +473,8 @@ class Controller(object):
     def logout_account(self, session_id):
         for i in sessions.sessions:
             if sessions.sessions[i].session_id == session_id: session = sessions.sessions[i]
+        if hasattr(session, "stop_streaming"):
+            session.stop_streaming()
         name =session.get_name()
         delete_buffers = []
         for i in self.buffers:
@@ -635,6 +637,8 @@ class Controller(object):
         for item in sessions.sessions:
             if sessions.sessions[item].logged == False:
                 continue
+            if hasattr(sessions.sessions[item], "stop_streaming"):
+                sessions.sessions[item].stop_streaming()
             sessions.sessions[item].sound.cleaner.cancel()
             log.debug("Saving database for " +    sessions.sessions[item].session_id)
             sessions.sessions[item].save_persistent_data()

src/sessions/mastodon/session.py

@@ -3,11 +3,11 @@ import os
 import paths
 import time
 import logging
+import threading
 import webbrowser
 import wx
 import mastodon
 import demoji
-import config
 import config_utils
 import output
 import application
@@ -36,6 +36,9 @@ class Session(base.baseSession):
         self.post_visibility = "public"
         self.expand_spoilers = False
         self.software = "mastodon"
+        self.user_stream = None
+        self.direct_stream = None
+        self._stream_lock = threading.Lock()
         pub.subscribe(self.on_status, "mastodon.status_received")
         pub.subscribe(self.on_status_updated, "mastodon.status_updated")
         pub.subscribe(self.on_notification, "mastodon.notification_received")
@@ -444,6 +447,10 @@ class Session(base.baseSession):
             return
         if self.software == "gotosocial":
             return
+        with self._stream_lock:
+            if any(stream is not None and stream.is_alive() for stream in (self.user_stream, self.direct_stream)):
+                log.debug("Streams for session {} are already running.".format(self.get_name()))
+                return
             listener = streaming.StreamListener(session_name=self.get_name(), user_id=self.db["user_id"])
             try:
                 stream_healthy = self.api.stream_healthy()
@@ -451,12 +458,23 @@ class Session(base.baseSession):
                     self.user_stream = self.api.stream_user(listener, run_async=True, reconnect_async=True, reconnect_async_wait_sec=30)
                     self.direct_stream = self.api.stream_direct(listener, run_async=True, reconnect_async=True, reconnect_async_wait_sec=30)
                     log.debug("Started streams for session {}.".format(self.get_name()))
-        except Exception as e:
+            except Exception:
                 log.exception("Detected streaming unhealthy in {} session.".format(self.get_name()))
 
     def stop_streaming(self):
-        if config.app["app-settings"]["no_streaming"]:
-            return
+        with self._stream_lock:
+            streams = (self.user_stream, self.direct_stream)
+            self.user_stream = None
+            self.direct_stream = None
+            for stream in streams:
+                if stream is None:
+                    continue
+                try:
+                    stream.close()
+                except Exception:
+                    log.exception("Unable to stop a stream for session {}.".format(self.get_name()))
+            if any(stream is not None for stream in streams):
+                log.debug("Stopped streams for session {}.".format(self.get_name()))
 
     def check_streams(self):
         pass