fix: WhatsApp-Polling als eigene Schleife statt APScheduler (kein Overlap mehr)

channels/whatsapp_channel.py

@@ -21,6 +21,7 @@ class WhatsAppChannel(BaseChannel):
         )
         self._token = settings.whatsapp_api_token
         self._session: aiohttp.ClientSession | None = None
+        self._polling_task: asyncio.Task | None = None
         self._inbound_callback: Callable[[dict[str, Any]], Awaitable[None]] | None = None
 
     def set_inbound_callback(self, cb: Callable[[dict[str, Any]], Awaitable[None]]) -> None:
@@ -72,37 +73,45 @@ class WhatsAppChannel(BaseChannel):
             return
         self._session = aiohttp.ClientSession()
         await self._ensure_incoming_enabled()
+        self._polling_task = asyncio.create_task(self._polling_loop(), name="whatsapp-polling")
         logger.info("WhatsApp channel started")
 
     async def stop(self) -> None:
+        if self._polling_task and not self._polling_task.done():
+            self._polling_task.cancel()
+            try:
+                await self._polling_task
+            except asyncio.CancelledError:
+                pass
+            self._polling_task = None
         if self._session and not self._session.closed:
             await self._session.close()
         logger.info("WhatsApp channel stopped")
 
-    # ── Polling (wird vom Scheduler aufgerufen) ────────────────────────────────
+    # ── Polling-Schleife ───────────────────────────────────────────────────────
 
-    async def poll_incoming(self) -> None:
-        """Eingehende Nachrichten per Polling abrufen (Green API Notification Queue)."""
-        if not settings.whatsapp_enabled:
-            return
+    async def _polling_loop(self) -> None:
+        """Endlos-Polling: direkt nach Antwort wieder starten, kein Overlap möglich."""
         url = f"{self._base_url}/receiveNotification/{self._token}"
-        try:
-            timeout = aiohttp.ClientTimeout(total=8)
-            async with self._get_session().get(url, params={"receiveTimeout": 3}, timeout=timeout) as resp:
-                if resp.status != 200:
-                    return
-                data = await resp.json()
-                if not data:
-                    return
-                receipt_id = data.get("receiptId")
-                body = data.get("body", {})
-                await self._process_notification(body)
-                if receipt_id:
-                    await self._delete_notification(receipt_id)
-        except asyncio.CancelledError:
-            raise
-        except Exception as exc:
-            logger.error("WhatsApp poll error: %s", exc)
+        timeout = aiohttp.ClientTimeout(total=15)
+        while True:
+            try:
+                async with self._get_session().get(
+                    url, params={"receiveTimeout": 5}, timeout=timeout
+                ) as resp:
+                    if resp.status == 200:
+                        data = await resp.json()
+                        if data:
+                            receipt_id = data.get("receiptId")
+                            body = data.get("body", {})
+                            await self._process_notification(body)
+                            if receipt_id:
+                                await self._delete_notification(receipt_id)
+            except asyncio.CancelledError:
+                break
+            except Exception as exc:
+                logger.error("WhatsApp poll error: %s", exc)
+                await asyncio.sleep(5)
 
     async def _delete_notification(self, receipt_id: int) -> None:
         url = f"{self._base_url}/deleteNotification/{self._token}/{receipt_id}"