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ae04b72b41
* feat: publish plans from sandbox files Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com> * fix: avoid fixed plan filenames Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com> * fix: virtualize local sandbox file paths Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com> * fix: preserve plan_file_path across set_plan_status set_plan_status was rewriting the content record with only markdown and status, dropping plan_file_path. After a reject, the owner's dashboard edit would mirror to a different file than the agent's original, and the next save_plan could republish the stale file. Preserve plan_file_path when updating status. --------- Co-authored-by: Ramon Nogueira <270434257+ramon-langchain@users.noreply.github.com> Co-authored-by: open-swe[bot] <open-swe@users.noreply.github.com>
84 lines
3.1 KiB
Python
84 lines
3.1 KiB
Python
"""Plan-mode tool gating.
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Hides tools that mutate external systems whenever plan mode is active — either
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when the run starts in plan mode (the per-thread ``plan_mode`` carried in
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configurable, e.g. a reject re-dispatch) OR after the model calls
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``enter_plan_mode`` mid-run, which sets ``plan_mode`` in the run state. Installed
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unconditionally so self-activation actually restricts the *next* model turn (the
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tool list is recomputed on every model call), rather than only affecting a future
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run.
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"""
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from __future__ import annotations
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from collections.abc import Awaitable, Callable
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from typing import Any, NotRequired
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from langchain.agents.middleware.types import (
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AgentMiddleware,
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AgentState,
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ModelRequest,
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ModelResponse,
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)
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from langchain_core.tools import BaseTool
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class PlanModeState(AgentState):
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# Declared so ``enter_plan_mode``'s Command update is a tracked channel that
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# this middleware can read back from ``request.state``.
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plan_mode: NotRequired[bool]
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def _tool_name(tool: BaseTool | dict[str, Any] | Any) -> str | None:
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if isinstance(tool, dict):
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name = tool.get("name")
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return name if isinstance(name, str) else None
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name = getattr(tool, "name", None)
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return name if isinstance(name, str) else None
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class PlanModeMiddleware(AgentMiddleware):
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"""Strip disallowed tools from each model request while plan mode is active."""
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state_schema = PlanModeState
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def __init__(self, *, excluded: frozenset[str], initial: bool = False) -> None:
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self._excluded = excluded
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self._initial = initial
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def before_agent(self, state: Any, runtime: Any) -> dict[str, Any] | None: # noqa: ARG002
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# Reset plan_mode to the value resolved for THIS run so a stale ``True``
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# left in the thread state by a previous run's ``enter_plan_mode`` does
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# not silently force a later (e.g. approved/implementing) run back into
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# plan mode. ``enter_plan_mode`` can still flip it on within this run.
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return {"plan_mode": self._initial}
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def _active(self, request: ModelRequest) -> bool:
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if self._initial:
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return True
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state = getattr(request, "state", None)
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if isinstance(state, dict):
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return state.get("plan_mode") is True
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return getattr(state, "plan_mode", None) is True
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def _filter(self, request: ModelRequest) -> ModelRequest:
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if not self._excluded or not self._active(request):
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return request
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filtered = [t for t in request.tools if _tool_name(t) not in self._excluded]
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if len(filtered) == len(request.tools):
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return request
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return request.override(tools=filtered)
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def wrap_model_call(
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self,
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request: ModelRequest,
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handler: Callable[[ModelRequest], ModelResponse],
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) -> ModelResponse:
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return handler(self._filter(request))
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async def awrap_model_call(
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self,
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request: ModelRequest,
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handler: Callable[[ModelRequest], Awaitable[ModelResponse]],
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) -> ModelResponse:
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return await handler(self._filter(request))
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