40 lines
1.3 KiB
Python
40 lines
1.3 KiB
Python
from fastapi import APIRouter, Depends, HTTPException, Query
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from typing import List, Optional
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from datetime import datetime
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from psycopg import AsyncConnection
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from .database import get_database_instance
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from .scada_info import query_pg_scada_info
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router = APIRouter(prefix="/postgresql", tags=["postgresql"])
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# 创建支持数据库选择的连接依赖函数
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async def get_database_connection(
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db_name: Optional[str] = Query(
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None, description="指定要连接的数据库名称，为空时使用默认数据库"
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)
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):
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"""获取数据库连接，支持通过查询参数指定数据库名称"""
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instance = await get_database_instance(db_name)
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async with instance.get_connection() as conn:
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yield conn
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@router.get("/scada-info")
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async def get_scada_info_with_connection(
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conn: AsyncConnection = Depends(get_database_connection),
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):
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"""
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使用连接池查询SCADA信息
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"""
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try:
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# 使用连接查询SCADA信息
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async with conn.cursor() as cur:
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await cur.execute("SELECT * FROM scada_info")
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scada_data = await cur.fetchall()
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return {"success": True, "data": scada_data, "count": len(scada_data)}
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except Exception as e:
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raise HTTPException(
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status_code=500, detail=f"查询SCADA信息时发生错误: {str(e)}"
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) |