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refactor(persistence): remove UTFJSON, use engine-level json_serializer + datetime.now()

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- Replace custom UTFJSON type with standard sqlalchemy.JSON in all ORM
  models. Add json_serializer=json.dumps(ensure_ascii=False) to all
  create_async_engine calls so non-ASCII text (Chinese etc.) is stored
  as-is in both SQLite and Postgres.
- Change ORM datetime defaults from datetime.now(UTC) to datetime.now(),
  remove UTC imports.

Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
This commit is contained in:
rayhpeng
2026-04-03 17:24:43 +08:00
parent 14c5f4b798
commit 3b4622a26f
5 changed files with 62 additions and 17 deletions
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backend/packages/harness/deerflow/persistence/models/run.py
+4 -4
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@@ -2,9 +2,9 @@
from __future__ import annotations
from datetime import UTC, datetime
from datetime import datetime
from sqlalchemy import JSON, Index, String, Text
from sqlalchemy import JSON, DateTime, Index, String, Text
from sqlalchemy.orm import Mapped, mapped_column
from deerflow.persistence.base import Base
@@ -43,7 +43,7 @@ class RunRow(Base):
# Follow-up association
follow_up_to_run_id: Mapped[str | None] = mapped_column(String(64))
created_at: Mapped[datetime] = mapped_column(default=lambda: datetime.now(UTC))
updated_at: Mapped[datetime] = mapped_column(default=lambda: datetime.now(UTC), onupdate=lambda: datetime.now(UTC))
created_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now())
updated_at: Mapped[datetime] = mapped_column(DateTime(timezone=True), default=lambda: datetime.now(), onupdate=lambda: datetime.now())
__table_args__ = (Index("ix_runs_thread_status", "thread_id", "status"),)