Merge pull request 'Potentially fixed bug to kill web api on restart #301' (#302) from #301 into support

Reviewed-on: sh-edraft.de/kd_discord_bot#302
Reviewed-by: Ebola-Chan <nick.jungmann@gmail.com>
Closes #301

kdb-bot/src/bot/application.py

@@ -65,6 +65,9 @@ class Application(DiscordBotApplicationABC):
         self._is_stopping = True
         try:
             self._logger.info(__name__, f"Try to stop {DiscordBotService.__name__}")
+            if self._feature_flags.get_flag(FeatureFlagsEnum.api_module):
+                self._api.stop()
+
             await self._bot.close()
             self._logger.info(__name__, f"Stopped {DiscordBotService.__name__}")
         except Exception as e:

kdb-bot/src/bot_api/api.py

@@ -1,8 +1,9 @@
+import socket
 import sys
 import textwrap
 import uuid
 from functools import partial
-from typing import Union
+from typing import Union, Optional
 
 import eventlet
 from cpl_core.dependency_injection import ServiceProviderABC
@@ -60,6 +61,8 @@ class Api(Flask):
         self._socketio.on_event("connect", self.on_connect)
         self._socketio.on_event("disconnect", self.on_disconnect)
 
+        self._socket: Optional[socket] = None
+
         self._requests = {}
 
     @staticmethod
@@ -152,7 +155,14 @@ class Api(Flask):
         # from waitress import serve
         # https://docs.pylonsproject.org/projects/waitress/en/stable/arguments.html
         # serve(self, host=self._apt_settings.host, port=self._apt_settings.port, threads=10, connection_limit=1000, channel_timeout=10)
-        wsgi.server(eventlet.listen((self._api_settings.host, self._api_settings.port)), self, log_output=False)
+        self._socket = eventlet.listen((self._api_settings.host, self._api_settings.port))
+        wsgi.server(self._socket, self, log_output=False)
+
+    def stop(self):
+        if self._socket is None:
+            return
+        self._socket.shutdown(socket.SHUT_RDWR)
+        self._socket.close()
 
     def on_connect(self):
         self._logger.info(__name__, f"Client connected")

kdb-bot/src/bot_api/api_thread.py

@@ -17,3 +17,10 @@ class ApiThread(threading.Thread):
             self._api.start()
         except Exception as e:
             self._logger.error(__name__, "Start failed", e)
+
+    def stop(self):
+        try:
+            self._logger.trace(__name__, f"Try to stop {type(self._api).__name__}")
+            self._api.stop()
+        except Exception as e:
+            self._logger.error(__name__, "Stop failed", e)