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refactor: 收口 V3 分层架构与插件兼容边界
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@@ -0,0 +1,17 @@
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"""数据库技术边界的连通性探测实现。"""
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from sqlalchemy import text
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from app.db.session import SessionFactory
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def probe_database() -> str | None:
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"""执行最小数据库查询,成功返回空值,失败返回错误文本。"""
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session = SessionFactory()
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try:
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session.execute(text("SELECT 1"))
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except Exception as err: # noqa: BLE001 探测需要把驱动错误转为诊断文本
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return str(err)
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finally:
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session.close()
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return None
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