删除旧文件；更新数据库查询方法

postgresql/router.py

@@ -0,0 +1,40 @@
+from fastapi import APIRouter, Depends, HTTPException, Query
+from typing import List, Optional
+from datetime import datetime
+from psycopg import AsyncConnection
+
+from .database import get_database_instance
+from .scada_info import query_pg_scada_info
+
+router = APIRouter(prefix="/postgresql", tags=["postgresql"])
+
+
+# 创建支持数据库选择的连接依赖函数
+async def get_database_connection(
+    db_name: Optional[str] = Query(
+        None, description="指定要连接的数据库名称，为空时使用默认数据库"
+    )
+):
+    """获取数据库连接，支持通过查询参数指定数据库名称"""
+    instance = await get_database_instance(db_name)
+    async with instance.get_connection() as conn:
+        yield conn
+
+
+@router.get("/scada-info")
+async def get_scada_info_with_connection(
+    conn: AsyncConnection = Depends(get_database_connection),
+):
+    """
+    使用连接池查询SCADA信息
+    """
+    try:
+        # 使用连接查询SCADA信息
+        async with conn.cursor() as cur:
+            await cur.execute("SELECT * FROM scada_info")
+            scada_data = await cur.fetchall()
+        return {"success": True, "data": scada_data, "count": len(scada_data)}
+    except Exception as e:
+        raise HTTPException(
+            status_code=500, detail=f"查询SCADA信息时发生错误: {str(e)}"
+        )