python_opc_api/jjq_support_1.py

#!/usr/bin/env python3
import redis
import asyncio
import tracemalloc
import aioredis

from asyncua import Client
from datetime import datetime

opc_server_url = "opc.tcp://192.168.10.133:49320"  # OPC UA服务器的URL
redis_ip = '127.0.0.1'
tracemalloc.start()

point_arr = [f"OPC.电液控.支架集.{num:03d}.立柱压力.前柱压力" for num in range(1, 138)]


# 连接opcua
async def connect_and_read_opcua_data():
    ns = 2
    result_arr = {}
    try:
        async with Client(url=opc_server_url, timeout=1) as client:
            await client.connect()

            node = await client.nodes.root.get_children()  # 获取所有子节点
            data_arr = [node.display_name.Text for node in node]

            for data in data_arr:
                node = f"ns={ns};s={data}"
                tag = client.get_node(node)
                value = await tag.read_value()

                # 异步存储到 Redis 中，需要使用异步的 Redis 客户端库
                # aioredis 或者其他异步库
                # redis_conn = await aioredis.create_redis_pool(('localhost', 6379))
                # await redis_conn.set(str(data), str(value))
                # await redis_conn.close()

                # redis_conn.set(str(data_arr[i]), str(value))
                # arr_key = node.split("=")
                # result_arr[arr_key[2]] = value

                result_arr[data] = value

            return result_arr
    except TimeoutError:
        msg = "连接超时，请检查网络、服务器状态和连接参数。"
        error = {
            "code": -1,
            "msg": msg
        }
        return error
    except Exception as e:
        msg = f"发生其他错误: {e}"
        error = {
            "code": -2,
            "msg": msg
        }
        return error


if __name__ == '__main__':
    loop = asyncio.get_event_loop()
    result = loop.run_until_complete(connect_and_read_opcua_data())
    print(result)