refactor: remove async queue from tracing service (#6999)

src/backend/base/langflow/services/tracing/service.py

@@ -60,35 +60,25 @@ class TracingService(Service):
         self.project_name: str | None = None
         self._tracers: dict[str, BaseTracer] = {}
         self._logs: dict[str, list[Log | dict[Any, Any]]] = defaultdict(list)
-        self.logs_queue: asyncio.Queue = asyncio.Queue()
         self.running = False
-        self.worker_task: asyncio.Task | None = None
         self.end_trace_tasks: set[asyncio.Task] = set()
         self.deactivated = self.settings_service.settings.deactivate_tracing
         self.session_id: str | None = None
 
-    async def log_worker(self) -> None:
-        while self.running or not self.logs_queue.empty():
-            log_func, args = await self.logs_queue.get()
-            try:
-                await log_func(*args)
-            except Exception:  # noqa: BLE001
-                logger.exception("Error processing log")
-            finally:
-                self.logs_queue.task_done()
-
     async def start(self) -> None:
         if self.running:
             return
         try:
             self.running = True
-            self.worker_task = asyncio.create_task(self.log_worker())
         except Exception:  # noqa: BLE001
             logger.exception("Error starting tracing service")
 
     async def flush(self) -> None:
+        # This method is kept for API compatibility but now has minimal implementation
         try:
-            await self.logs_queue.join()
+            # Wait for any pending trace tasks to complete
+            if self.end_trace_tasks:
+                await asyncio.gather(*self.end_trace_tasks, return_exceptions=True)
         except Exception:  # noqa: BLE001
             logger.exception("Error flushing logs")
 
@@ -96,13 +86,6 @@ class TracingService(Service):
         try:
             self.running = False
             await self.flush()
-            # check the qeue is empty
-            if not self.logs_queue.empty():
-                await self.logs_queue.join()
-            if self.worker_task:
-                self.worker_task.cancel()
-                self.worker_task = None
-
         except Exception:  # noqa: BLE001
             logger.exception("Error stopping tracing service")