Files
deer-flow/backend/packages/harness/deerflow/persistence/thread_meta/memory.py
T
rayhpeng d25c8d371f refactor(persistence): organize entities into per-entity directories
Restructure the persistence layer from horizontal "models/ + repositories/"
split into vertical entity-aligned directories. Each entity (thread_meta,
run, feedback) now owns its ORM model, abstract interface (where applicable),
and concrete implementations under a single directory with an aggregating
__init__.py for one-line imports.

Layout:
  persistence/thread_meta/{base,model,sql,memory}.py
  persistence/run/{model,sql}.py
  persistence/feedback/{model,sql}.py

models/__init__.py is kept as a facade so Alembic autogenerate continues to
discover all ORM tables via Base.metadata. RunEventRow remains under
models/run_event.py because its storage implementation lives in
runtime/events/store/db.py and has no matching repository directory.

The repositories/ directory is removed entirely. All call sites in
gateway/deps.py and tests are updated to import from the new entity
packages, e.g.:

    from deerflow.persistence.thread_meta import ThreadMetaRepository
    from deerflow.persistence.run import RunRepository
    from deerflow.persistence.feedback import FeedbackRepository

Full test suite passes (1690 passed, 14 skipped).

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-04-07 10:32:40 +08:00

109 lines
3.4 KiB
Python

"""In-memory ThreadMetaStore backed by LangGraph BaseStore.
Used when database.backend=memory. Delegates to the LangGraph Store's
``("threads",)`` namespace — the same namespace used by the Gateway
router for thread records.
"""
from __future__ import annotations
import time
from typing import Any
from langgraph.store.base import BaseStore
from deerflow.persistence.thread_meta.base import ThreadMetaStore
THREADS_NS: tuple[str, ...] = ("threads",)
class MemoryThreadMetaStore(ThreadMetaStore):
def __init__(self, store: BaseStore) -> None:
self._store = store
async def create(
self,
thread_id: str,
*,
assistant_id: str | None = None,
owner_id: str | None = None,
display_name: str | None = None,
metadata: dict | None = None,
) -> dict:
now = time.time()
record: dict[str, Any] = {
"thread_id": thread_id,
"assistant_id": assistant_id,
"owner_id": owner_id,
"display_name": display_name,
"status": "idle",
"metadata": metadata or {},
"values": {},
"created_at": now,
"updated_at": now,
}
await self._store.aput(THREADS_NS, thread_id, record)
return record
async def get(self, thread_id: str) -> dict | None:
item = await self._store.aget(THREADS_NS, thread_id)
return item.value if item is not None else None
async def search(
self,
*,
metadata: dict | None = None,
status: str | None = None,
limit: int = 100,
offset: int = 0,
) -> list[dict]:
filter_dict: dict[str, Any] = {}
if metadata:
filter_dict.update(metadata)
if status:
filter_dict["status"] = status
items = await self._store.asearch(
THREADS_NS,
filter=filter_dict or None,
limit=limit,
offset=offset,
)
return [self._item_to_dict(item) for item in items]
async def update_display_name(self, thread_id: str, display_name: str) -> None:
item = await self._store.aget(THREADS_NS, thread_id)
if item is None:
return
record = dict(item.value)
record["display_name"] = display_name
record["updated_at"] = time.time()
await self._store.aput(THREADS_NS, thread_id, record)
async def update_status(self, thread_id: str, status: str) -> None:
item = await self._store.aget(THREADS_NS, thread_id)
if item is None:
return
record = dict(item.value)
record["status"] = status
record["updated_at"] = time.time()
await self._store.aput(THREADS_NS, thread_id, record)
async def delete(self, thread_id: str) -> None:
await self._store.adelete(THREADS_NS, thread_id)
@staticmethod
def _item_to_dict(item) -> dict[str, Any]:
"""Convert a Store SearchItem to the dict format expected by callers."""
val = item.value
return {
"thread_id": item.key,
"assistant_id": val.get("assistant_id"),
"owner_id": val.get("owner_id"),
"display_name": val.get("display_name"),
"status": val.get("status", "idle"),
"metadata": val.get("metadata", {}),
"created_at": str(val.get("created_at", "")),
"updated_at": str(val.get("updated_at", "")),
}