diff --git a/src/backend/langflow/services/task/backends/anyio.py b/src/backend/langflow/services/task/backends/anyio.py index 20691212d..6c833443a 100644 --- a/src/backend/langflow/services/task/backends/anyio.py +++ b/src/backend/langflow/services/task/backends/anyio.py @@ -1,6 +1,7 @@ from typing import Any, Callable, Tuple import anyio from langflow.services.task.backends.base import TaskBackend +from loguru import logger class AnyIOTaskResult: @@ -38,13 +39,29 @@ class AnyIOBackend(TaskBackend): async def launch_task( self, task_func: Callable[..., Any], *args: Any, **kwargs: Any - ) -> Tuple[str, AnyIOTaskResult]: # sourcery skip: remove-unnecessary-cast + ) -> Tuple[str, AnyIOTaskResult]: + """ + Launch a new task in an asynchronous manner. + + Parameters: + task_func: The asynchronous function to run. + *args: Positional arguments to pass to task_func. + **kwargs: Keyword arguments to pass to task_func. + + Returns: + A tuple containing a unique task ID and the task result object. + """ async with anyio.create_task_group() as tg: - task_result = AnyIOTaskResult(tg) - tg.start_soon(task_result.run, task_func, *args, **kwargs) - task_id = str(id(task_result)) - self.tasks[task_id] = task_result - return task_id, task_result + try: + task_result = AnyIOTaskResult(tg) + tg.start_soon(task_result.run, task_func, *args, **kwargs) + task_id = str(id(task_result)) + self.tasks[task_id] = task_result + logger.info(f"Task {task_id} started.") + return task_id, task_result + except Exception as e: + logger.error(f"An error occurred while launching the task: {e}") + return None, None def get_task(self, task_id: str) -> Any: return self.tasks.get(task_id) diff --git a/src/backend/langflow/services/task/backends/celery.py b/src/backend/langflow/services/task/backends/celery.py index 3a6e1f450..f4f81b9cc 100644 --- a/src/backend/langflow/services/task/backends/celery.py +++ b/src/backend/langflow/services/task/backends/celery.py @@ -1,5 +1,5 @@ from typing import Any, Callable -from celery.result import AsyncResult # type: ignore +from celery.result import AsyncResult from langflow.services.task.backends.base import TaskBackend from langflow.worker import celery_app @@ -11,10 +11,13 @@ class CeleryBackend(TaskBackend): def launch_task( self, task_func: Callable[..., Any], *args: Any, **kwargs: Any ) -> str: + # I need to type the delay method to make it easier + from celery import Task + if not hasattr(task_func, "delay"): raise ValueError(f"Task function {task_func} does not have a delay method") - task = task_func.delay(*args, **kwargs) - return task.id + task: Task = task_func.delay(*args, **kwargs) + return task.id, AsyncResult(task.id, app=self.celery_app) def get_task(self, task_id: str) -> Any: return AsyncResult(task_id, app=self.celery_app)