mirror of
https://github.com/bytedance/deer-flow.git
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taohe
91 lines
3.0 KiB
Python
91 lines
3.0 KiB
Python
"""Abstract interface for thread metadata storage.
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Implementations:
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- ThreadMetaRepository: SQL-backed (sqlite / postgres via SQLAlchemy)
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- MemoryThreadMetaStore: wraps LangGraph BaseStore (memory mode)
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All mutating and querying methods accept a ``user_id`` parameter with
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three-state semantics (see :mod:`deerflow.runtime.user_context`):
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- ``AUTO`` (default): resolve from the request-scoped contextvar.
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- Explicit ``str``: use the provided value verbatim.
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- Explicit ``None``: bypass owner filtering (migration/CLI only).
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"""
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from __future__ import annotations
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import abc
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from typing import Any
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from deerflow.runtime.user_context import AUTO, _AutoSentinel
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class InvalidMetadataFilterError(ValueError):
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"""Raised when all client-supplied metadata filter keys are rejected."""
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class ThreadMetaStore(abc.ABC):
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@abc.abstractmethod
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async def create(
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self,
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thread_id: str,
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*,
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assistant_id: str | None = None,
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user_id: str | None | _AutoSentinel = AUTO,
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display_name: str | None = None,
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metadata: dict | None = None,
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) -> dict:
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pass
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@abc.abstractmethod
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async def get(self, thread_id: str, *, user_id: str | None | _AutoSentinel = AUTO) -> dict | None:
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pass
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@abc.abstractmethod
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async def search(
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self,
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*,
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metadata: dict[str, Any] | None = None,
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status: str | None = None,
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limit: int = 100,
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offset: int = 0,
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user_id: str | None | _AutoSentinel = AUTO,
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) -> list[dict[str, Any]]:
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pass
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@abc.abstractmethod
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async def update_display_name(self, thread_id: str, display_name: str, *, user_id: str | None | _AutoSentinel = AUTO) -> None:
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pass
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@abc.abstractmethod
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async def update_status(self, thread_id: str, status: str, *, user_id: str | None | _AutoSentinel = AUTO) -> None:
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pass
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@abc.abstractmethod
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async def update_metadata(self, thread_id: str, metadata: dict, *, user_id: str | None | _AutoSentinel = AUTO) -> None:
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"""Merge ``metadata`` into the thread's metadata field.
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Existing keys are overwritten by the new values; keys absent from
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``metadata`` are preserved. No-op if the thread does not exist
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or the owner check fails.
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"""
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pass
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@abc.abstractmethod
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async def update_owner(self, thread_id: str, owner_user_id: str, *, user_id: str | None | _AutoSentinel = AUTO) -> None:
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"""Move a thread metadata row to a new owner.
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Intended for trusted internal repair/migration paths. No-op if the
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row does not exist or the caller fails the owner check.
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"""
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pass
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@abc.abstractmethod
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async def check_access(self, thread_id: str, user_id: str, *, require_existing: bool = False) -> bool:
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"""Check if ``user_id`` has access to ``thread_id``."""
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pass
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@abc.abstractmethod
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async def delete(self, thread_id: str, *, user_id: str | None | _AutoSentinel = AUTO) -> None:
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pass
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