Improved Radarr SignalR feed reconnection process.

bazarr/signalr_client.py

@@ -75,55 +75,50 @@ class SonarrSignalrClient(threading.Thread):
 class RadarrSignalrClient(threading.Thread):
     def __init__(self):
         super(RadarrSignalrClient, self).__init__()
-        self.stopped = True
         self.apikey_radarr = None
         self.connection = None
 
+        self.configure()
+        self.start()
+
+    def start(self):
+        logging.debug('BAZARR connecting to Radarr SignalR feed...')
+        self.connection.start()
+        gevent.sleep()
+
     def stop(self):
-        self.connection.stop()
-        self.stopped = True
         logging.info('BAZARR SignalR client for Radarr is now disconnected.')
+        self.connection.stop()
 
     def restart(self):
-        if not self.stopped:
+        if self.connection.transport.state.value in [0, 1, 2]:
             self.stop()
         if settings.general.getboolean('use_radarr'):
-            self.run()
+            self.configure()
+            self.start()
 
-    def run(self):
+    def configure(self):
         self.apikey_radarr = settings.radarr.apikey
         self.connection = HubConnectionBuilder() \
             .with_url(url_radarr() + "/signalr/messages?access_token={}".format(self.apikey_radarr),
                       options={
                           "verify_ssl": False
-                      }).build()
-        self.connection.on_open(lambda: logging.debug("BAZARR SignalR client for Radarr is connected."))
-        self.connection.on_close(lambda: logging.debug("BAZARR SignalR client for Radarr is disconnected."))
+                      }) \
+            .with_automatic_reconnect({
+                "type": "raw",
+                "keep_alive_interval": 5,
+                "reconnect_interval": 5,
+                "max_attempts": None
+            }).build()
+        self.connection.on_open(lambda: logging.info('BAZARR SignalR client for Radarr is connected and waiting for '
+                                                     'events.'))
+        self.connection.on_reconnect(lambda: logging.info('BAZARR SignalR client for Radarr connection as been lost. '
+                                                          'Trying to reconnect...'))
+        self.connection.on_close(lambda: logging.debug('BAZARR SignalR client for Radarr is disconnected.'))
         self.connection.on_error(lambda data: logging.debug(f"BAZARR SignalR client for Radarr: An exception was thrown"
                                                             f" closed{data.error}"))
         self.connection.on("receiveMessage", dispatcher)
 
-        while True:
-            if not self.stopped:
-                return
-            if self.connection.transport.state.value == 4:
-                # 0: 'connecting', 1: 'connected', 2: 'reconnecting', 4: 'disconnected'
-                try:
-                    logging.debug('BAZARR connecting to Radarr SignalR feed...')
-                    self.connection.start()
-                except ConnectionError:
-                    logging.error('BAZARR connection to Radarr SignalR feed has been lost. Reconnecting...')
-                    gevent.sleep(15)
-                    pass
-                else:
-                    self.stopped = False
-                    logging.info('BAZARR SignalR client for Radarr is connected and waiting for events.')
-                    if not args.dev:
-                        scheduler.execute_job_now('update_movies')
-                    gevent.sleep()
-            else:
-                gevent.sleep(5)
-
 
 def dispatcher(data):
     topic = media_id = action = None

libs/signalrcore/hub/base_hub_connection.py

@@ -77,6 +77,16 @@ class BaseHubConnection(object):
         """
         self._on_error = callback
 
+    def on_reconnect(self, callback):
+        """Configures on_reconnect reconnection callback.
+            It will be raised on reconnection event
+        connection.on_reconnect(lambda: print(
+            "connection lost, reconnection in progress "))
+        Args:
+            callback (function): function without params
+        """
+        self.transport.on_reconnect_callback(callback)
+
     def on(self, event, callback_function: Callable):
         """Register a callback on the specified event
         Args:

libs/signalrcore/transport/base_transport.py

@@ -7,8 +7,8 @@ class BaseTransport(object):
         self._on_message= on_message
         self.logger = Helpers.get_logger()
         self._on_open = lambda: self.logger.info("on_connect not defined")
-        self._on_close = lambda: self.logger.info(
-            "on_disconnect not defined")
+        self._on_close = lambda: self.logger.info("on_disconnect not defined")
+        self._on_reconnect = lambda: self.logger.info("on_reconnect not defined")
 
     def on_open_callback(self, callback):
         self._on_open = callback
@@ -16,6 +16,9 @@ class BaseTransport(object):
     def on_close_callback(self, callback):
         self._on_close = callback
 
+    def on_reconnect_callback(self, callback):
+        self._on_reconnect = callback
+
     def start(self): # pragma: no cover
         raise NotImplementedError()
 

libs/signalrcore/transport/websockets/websocket_transport.py

@@ -144,6 +144,12 @@ class WebsocketTransport(BaseTransport):
         if self._on_close is not None and callable(self._on_close):
             self._on_close()
 
+    def on_reconnect(self):
+        self.logger.debug("-- web socket reconnecting --")
+        self.state = ConnectionState.disconnected
+        if self._on_close is not None and callable(self._on_close):
+            self._on_close()
+
     def on_socket_error(self, error):
         """
         Throws error related on
@@ -217,6 +223,9 @@ class WebsocketTransport(BaseTransport):
             raise ex
 
     def handle_reconnect(self):
+        if not self.reconnection_handler.reconnecting and self._on_reconnect is not None and \
+                callable(self._on_reconnect):
+            self._on_reconnect()
         self.reconnection_handler.reconnecting = True
         try:
             self.stop()

libs/version.txt

@@ -30,7 +30,7 @@ rebulk=3.0.1
 requests=2.18.4
 semver=2.13.0
 signalr-client=0.0.7 <-- Modified to work with Sonarr
-signalrcore=0.9.2
+signalrcore=0.9.2 <-- https://github.com/mandrewcito/signalrcore/pull/60
 SimpleConfigParser=0.1.0 <-- modified version: do not update!!!
 six=1.11.0
 socketio=5.1.0