colcaroli/playchat
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Store timestamps as UTC-aware and slim the knowledge context to headlines

Browse Source 
タイムゾーン:
SQLite の DATETIME は tzinfo を保存できず、DateTime(timezone=True) を
指定してもバインド時に捨てられるため、API のレスポンスがオフセット無しの
ISO 文字列になりフロントがローカル時刻として誤解していた。UtcDateTime
(TypeDecorator) を追加し、書き込み時は naive な UTC に正規化、読み出し時は
UTC の aware として返すようにする。格納フォーマットは変わらないので既存
データはそのまま正しく解釈でき、マイグレーションは不要。
コンテナは TZ 未設定で UTC だったため、天気通知の cron 時刻・深夜スキップ
判定・「明日」の日付計算が9時間ずれていた。TZ=Asia/Tokyo を指定し、slim
イメージに無い tzdata を導入する。

蓄積知識:
層1が最新15件の要約全文を毎リクエスト無条件に注入しており、同じ内容が
ローカルKB（層3）にも保存されているため重複していた。層1を「クエリ＋
一行要約」の目次に変え、本文は read_knowledge ツールで読み出す形にする。
一行要約は要約生成時の既存 LLM 呼び出しに相乗りするので呼び出し回数は
増えない。headline を持たない既存エントリは本文の先頭行から導出する。

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
This commit is contained in:
colcaroli
2026-08-20 14:22:59 +09:00
co-authored by Claude Opus 5
parent 8b2231ea97
commit be3af44891
13 changed files with 427 additions and 49 deletions
Download Patch File Download Diff File Expand all files Collapse all files
backend/app/db/models.py
+18 -14
View File
@@ -1,7 +1,8 @@
from datetime import datetime, timezone
from sqlalchemy import String, Text, DateTime, ForeignKey, Integer, Float
from sqlalchemy import String, Text, ForeignKey, Integer, Float
from sqlalchemy.orm import Mapped, mapped_column, relationship
from app.db.database import Base
from app.db.types import UtcDateTime
class Session(Base):
@@ -10,8 +11,8 @@ class Session(Base):
id: Mapped[str] = mapped_column(String, primary_key=True)
title: Mapped[str] = mapped_column(String, default="New Chat")
model: Mapped[str] = mapped_column(String, default="")
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
messages: Mapped[list["Message"]] = relationship(back_populates="session", cascade="all, delete-orphan", order_by="Message.created_at")
memories: Mapped[list["Memory"]] = relationship(back_populates="session", cascade="all, delete-orphan")
@@ -24,7 +25,7 @@ class Message(Base):
session_id: Mapped[str] = mapped_column(ForeignKey("sessions.id", ondelete="CASCADE"))
role: Mapped[str] = mapped_column(String) # "user" | "assistant" | "system"
content: Mapped[str] = mapped_column(Text)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
session: Mapped["Session"] = relationship(back_populates="messages")
tags: Mapped[list["MessageTag"]] = relationship(back_populates="message", cascade="all, delete-orphan")
@@ -36,7 +37,7 @@ class MessageTag(Base):
id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
message_id: Mapped[int] = mapped_column(ForeignKey("messages.id", ondelete="CASCADE"))
tag: Mapped[str] = mapped_column(String)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
message: Mapped["Message"] = relationship(back_populates="tags")
@@ -48,7 +49,7 @@ class Memory(Base):
session_id: Mapped[str] = mapped_column(ForeignKey("sessions.id", ondelete="CASCADE"))
summary: Mapped[str] = mapped_column(Text)
embedding_json: Mapped[str | None] = mapped_column(Text, nullable=True) # 将来のベクトル検索用
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
session: Mapped["Session"] = relationship(back_populates="memories")
tags: Mapped[list["MemoryTag"]] = relationship(back_populates="memory", cascade="all, delete-orphan")
@@ -60,7 +61,7 @@ class MemoryTag(Base):
id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
memory_id: Mapped[int] = mapped_column(ForeignKey("memories.id", ondelete="CASCADE"))
tag: Mapped[str] = mapped_column(String)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
memory: Mapped["Memory"] = relationship(back_populates="tags")
@@ -72,7 +73,10 @@ class KnowledgeEntry(Base):
id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
query: Mapped[str] = mapped_column(String)
summary: Mapped[str] = mapped_column(Text)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
# システムプロンプトには本文ではなくこの一行要約だけを並べる（app.core.memory_kb.knowledge を参照）。
# このカラム追加より前に作られた行では None になるため、表示側で summary から導出する。
headline: Mapped[str | None] = mapped_column(String, nullable=True)
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
sources: Mapped[list["KnowledgeSource"]] = relationship(back_populates="entry", cascade="all, delete-orphan")
@@ -101,7 +105,7 @@ class LocalKnowledgeDoc(Base):
title: Mapped[str] = mapped_column(String)
content_hash: Mapped[str] = mapped_column(String)
embedding_json: Mapped[str] = mapped_column(Text)
updated_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
class NotePage(Base):
@@ -117,8 +121,8 @@ class NotePage(Base):
content: Mapped[str] = mapped_column(Text, default="")
position: Mapped[int] = mapped_column(Integer, default=0) # タブの並び順（セクションでまとめる際、同じセクションのページは連続させる）
section: Mapped[str | None] = mapped_column(String, nullable=True) # タブをグループ化するセクション名。未設定なら未分類
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
class AppSetting(Base):
@@ -127,7 +131,7 @@ class AppSetting(Base):
key: Mapped[str] = mapped_column(String, primary_key=True)
value: Mapped[str] = mapped_column(Text)
updated_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
updated_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc), onupdate=lambda: datetime.now(timezone.utc))
class ModelPreset(Base):
@@ -137,7 +141,7 @@ class ModelPreset(Base):
id: Mapped[int] = mapped_column(Integer, primary_key=True, autoincrement=True)
label: Mapped[str] = mapped_column(String)
value: Mapped[str] = mapped_column(String, unique=True)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))
class ApiLog(Base):
@@ -150,4 +154,4 @@ class ApiLog(Base):
response_text: Mapped[str | None] = mapped_column(Text, nullable=True)
error: Mapped[str | None] = mapped_column(Text, nullable=True)
latency_ms: Mapped[float | None] = mapped_column(Float, nullable=True)
created_at: Mapped[datetime] = mapped_column(DateTime, default=lambda: datetime.now(timezone.utc))
created_at: Mapped[datetime] = mapped_column(UtcDateTime, default=lambda: datetime.now(timezone.utc))