b17786b57b
主要功能: - 图片上传时 OCR 内容去重（3个上传端点统一使用公共函数 _check_ocr_duplicate） - 图片管理 Tab：展示所有图片、手动删除、一键去重 - 搜索结果详情弹窗增加删除按钮（带确认弹窗） - 图片管理卡片点击查看详情（复用 showOcrDetailModal） - 搜索限制和 LLM 批量判断数量可通过网站设置 - MiniMax API 调用添加 reasoning_split=True - 企业微信机器人：WebSocket 长连接、图片搜索、配置化搜索数量 - 版本号升级至 1.2.0
108 lines
3.5 KiB
Python
108 lines
3.5 KiB
Python
"""
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数据库连接模块
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支持 PostgreSQL（生产）和 SQLite（本地开发）两种后端
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"""
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from __future__ import annotations
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from collections.abc import AsyncGenerator
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from pathlib import Path
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from sqlalchemy import text
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from sqlalchemy.ext.asyncio import (
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AsyncSession,
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async_sessionmaker,
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create_async_engine,
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)
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from sqlalchemy.pool import NullPool
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from app.config import settings
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# ──────────────────────────── 判断数据库类型 ────────────────────────────
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DB_URL = settings.DATABASE_URL
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IS_SQLITE = DB_URL.startswith("sqlite")
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# ──────────────────────────── 异步引擎 ────────────────────────────
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if IS_SQLITE:
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# SQLite 配置
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sqlite_path = DB_URL.replace("sqlite+aiosqlite:///", "")
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if not sqlite_path.startswith("/"):
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sqlite_path = str(Path(__file__).parent.parent / sqlite_path)
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engine = create_async_engine(
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f"sqlite+aiosqlite:///{sqlite_path}",
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echo=settings.DEBUG,
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)
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else:
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# PostgreSQL 配置
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engine = create_async_engine(
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DB_URL,
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echo=settings.DEBUG,
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poolclass=NullPool,
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pool_pre_ping=True,
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)
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# ──────────────────────────── 会话工厂 ────────────────────────────
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async_session_factory = async_sessionmaker(
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bind=engine,
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class_=AsyncSession,
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expire_on_commit=False,
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autoflush=False,
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)
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# ──────────────────────────── 依赖注入 ────────────────────────────
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async def get_db() -> AsyncGenerator[AsyncSession, None]:
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"""
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FastAPI 依赖项：获取异步数据库会话。
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"""
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async with async_session_factory() as session:
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try:
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yield session
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await session.commit()
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except Exception:
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await session.rollback()
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raise
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# ──────────────────────────── 生命周期辅助 ────────────────────────────
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async def init_db() -> None:
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"""初始化数据库：建表"""
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from app.models.base import Base
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async with engine.begin() as conn:
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if IS_SQLITE:
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# SQLite 启用 WAL 模式和外键约束
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await conn.execute(text("PRAGMA journal_mode=WAL"))
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await conn.execute(text("PRAGMA foreign_keys=ON"))
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# 创建所有表
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await conn.run_sync(Base.metadata.create_all)
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if not IS_SQLITE:
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# PostgreSQL 需要创建扩展
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async with engine.begin() as conn:
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try:
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await conn.execute(text("CREATE EXTENSION IF NOT EXISTS vector"))
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except Exception:
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pass
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try:
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await conn.execute(text("CREATE EXTENSION IF NOT EXISTS zhparser"))
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except Exception:
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pass
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try:
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await conn.execute(text(
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"CREATE TEXT SEARCH CONFIGURATION IF NOT EXISTS chinese_zh (PARSER = zhparser)"
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))
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except Exception:
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pass
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async def close_db() -> None:
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"""关闭数据库引擎"""
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await engine.dispose()
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