SurfSense/surfsense_backend/app/agents/new_chat/filesystem_backends.py

42 lines
1.4 KiB
Python

"""Filesystem backend resolver for cloud and desktop-local modes."""
from __future__ import annotations
from collections.abc import Callable
from functools import lru_cache
from deepagents.backends.state import StateBackend
from langgraph.prebuilt.tool_node import ToolRuntime
from app.agents.new_chat.filesystem_selection import FilesystemMode, FilesystemSelection
from app.agents.new_chat.middleware.multi_root_local_folder_backend import (
MultiRootLocalFolderBackend,
)
@lru_cache(maxsize=64)
def _cached_multi_root_backend(
mounts: tuple[tuple[str, str], ...],
) -> MultiRootLocalFolderBackend:
return MultiRootLocalFolderBackend(mounts)
def build_backend_resolver(
selection: FilesystemSelection,
) -> Callable[[ToolRuntime], StateBackend | MultiRootLocalFolderBackend]:
"""Create deepagents backend resolver for the selected filesystem mode."""
if selection.mode == FilesystemMode.DESKTOP_LOCAL_FOLDER and selection.local_mounts:
def _resolve_local(_runtime: ToolRuntime) -> MultiRootLocalFolderBackend:
mounts = tuple(
(entry.mount_id, entry.root_path) for entry in selection.local_mounts
)
return _cached_multi_root_backend(mounts)
return _resolve_local
def _resolve_cloud(runtime: ToolRuntime) -> StateBackend:
return StateBackend(runtime)
return _resolve_cloud