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https://gitee.com/wanwujie/deer-flow
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d24a66ffd3
* Initial plan * refactor: centralize path management and improve memory storage configuration * fix: update memory storage path in config.example.yaml for clarity * Initial plan * Address PR #901 review comments: security fixes and documentation improvements Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com> --------- Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com> Co-authored-by: foreleven <4785594+foreleven@users.noreply.github.com>
91 lines
3.2 KiB
Python
91 lines
3.2 KiB
Python
from typing import NotRequired, override
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from langchain.agents import AgentState
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from langchain.agents.middleware import AgentMiddleware
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from langgraph.runtime import Runtime
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from src.agents.thread_state import ThreadDataState
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from src.config.paths import Paths, get_paths
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class ThreadDataMiddlewareState(AgentState):
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"""Compatible with the `ThreadState` schema."""
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thread_data: NotRequired[ThreadDataState | None]
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class ThreadDataMiddleware(AgentMiddleware[ThreadDataMiddlewareState]):
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"""Create thread data directories for each thread execution.
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Creates the following directory structure:
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- {base_dir}/threads/{thread_id}/user-data/workspace
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- {base_dir}/threads/{thread_id}/user-data/uploads
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- {base_dir}/threads/{thread_id}/user-data/outputs
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Lifecycle Management:
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- With lazy_init=True (default): Only compute paths, directories created on-demand
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- With lazy_init=False: Eagerly create directories in before_agent()
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"""
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state_schema = ThreadDataMiddlewareState
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def __init__(self, base_dir: str | None = None, lazy_init: bool = True):
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"""Initialize the middleware.
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Args:
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base_dir: Base directory for thread data. Defaults to Paths resolution.
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lazy_init: If True, defer directory creation until needed.
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If False, create directories eagerly in before_agent().
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Default is True for optimal performance.
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"""
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super().__init__()
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self._paths = Paths(base_dir) if base_dir else get_paths()
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self._lazy_init = lazy_init
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def _get_thread_paths(self, thread_id: str) -> dict[str, str]:
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"""Get the paths for a thread's data directories.
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Args:
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thread_id: The thread ID.
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Returns:
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Dictionary with workspace_path, uploads_path, and outputs_path.
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"""
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return {
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"workspace_path": str(self._paths.sandbox_work_dir(thread_id)),
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"uploads_path": str(self._paths.sandbox_uploads_dir(thread_id)),
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"outputs_path": str(self._paths.sandbox_outputs_dir(thread_id)),
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}
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def _create_thread_directories(self, thread_id: str) -> dict[str, str]:
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"""Create the thread data directories.
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Args:
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thread_id: The thread ID.
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Returns:
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Dictionary with the created directory paths.
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"""
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self._paths.ensure_thread_dirs(thread_id)
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return self._get_thread_paths(thread_id)
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@override
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def before_agent(self, state: ThreadDataMiddlewareState, runtime: Runtime) -> dict | None:
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thread_id = runtime.context.get("thread_id")
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if thread_id is None:
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raise ValueError("Thread ID is required in the context")
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if self._lazy_init:
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# Lazy initialization: only compute paths, don't create directories
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paths = self._get_thread_paths(thread_id)
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else:
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# Eager initialization: create directories immediately
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paths = self._create_thread_directories(thread_id)
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print(f"Created thread data directories for thread {thread_id}")
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return {
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"thread_data": {
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**paths,
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}
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}
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