576 lines
22 KiB
Python
576 lines
22 KiB
Python
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#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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"""
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Modbus设备操作处理器模块
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提供与Modbus设备操作相关的各种处理器
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"""
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import logging
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import json
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import asyncio
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import uuid
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from typing import Dict, Any, Optional
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from pymodbus.client import ModbusTcpClient
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from pymodbus.exceptions import ConnectionException, ModbusException
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from services.execution.task_context import TaskContext
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from .base import BlockHandler, register_handler
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from config.settings import settings
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from sqlalchemy import select
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from data.models.modbusconfig import VWEDModbusConfig
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from data.session import get_async_session
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from utils.logger import get_logger
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from .model.block_name import ModbusBlockName
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# 获取日志记录器
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logger = get_logger("services.execution.handlers.modbus_equipment")
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# 模拟模式下的延迟时间(秒)
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MOCK_DELAY = 0.5
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async def get_modbus_config(instance_name: str, address_number: Optional[int] = None) -> Optional[Dict[str, Any]]:
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"""
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从数据库获取Modbus配置信息
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Args:
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instance_name: Modbus实例名称
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address_number: 地址编号(可选)
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Returns:
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Optional[Dict[str, Any]]: Modbus配置信息，如果未找到则返回None
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"""
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try:
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async with get_async_session() as session:
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# 构建查询条件
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query = select(VWEDModbusConfig).where(VWEDModbusConfig.name == instance_name)
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# 如果指定了地址编号，添加条件
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if address_number.strip() and address_number is not None :
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query = query.where(VWEDModbusConfig.address_number == address_number)
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# 执行查询
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result = await session.execute(query)
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config = result.scalars().first()
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if not config:
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logger.warning(f"未找到Modbus配置: {instance_name}" +
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(f", 地址编号: {address_number}" if address_number is not None else ""))
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return None
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# 将ORM对象转换为字典
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config_dict = {
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"id": config.id,
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"name": config.name,
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"ip": config.ip,
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"port": config.port,
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"slave_id": config.slave_id,
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"address_type": config.address_type,
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"address_number": config.address_number,
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"task_id": config.task_id,
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"target_value": config.target_value,
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"remark": config.remark,
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"status": config.status
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}
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return config_dict
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except Exception as e:
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logger.error(f"获取Modbus配置出错: {str(e)}")
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return None
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async def read_modbus_value(config: Dict[str, Any]) -> Dict[str, Any]:
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"""
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读取Modbus值
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Args:
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config: Modbus配置信息
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Returns:
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Dict[str, Any]: 读取结果，包含success和value字段
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"""
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# 检查是否启用测试模式
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if settings.MODBUS_MOCK_MODE:
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logger.info(f"[测试模式] 模拟读取Modbus值: {config['name']}, 地址: {config['address_number']}")
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# 模拟读取延迟
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await asyncio.sleep(MOCK_DELAY)
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# 构造测试模式下的响应
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mock_value = (config.get('address_number', 0) + uuid.uuid4().int % 100) % 1000
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return {
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"success": True,
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"value": mock_value,
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"message": f"[测试模式] 成功读取Modbus值: {mock_value}"
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}
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try:
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# 创建Modbus TCP客户端
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client = ModbusTcpClient(
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host=config['ip'],
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port=config['port'],
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timeout=settings.MODBUS_TIMEOUT
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)
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# 连接到Modbus服务器
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if not client.connect():
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return {
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"success": False,
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"message": f"无法连接到Modbus服务器: {config['ip']}:{config['port']}"
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}
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# 根据地址类型读取不同的寄存器
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address_type = config['address_type']
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address = config['address_number']
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slave_id = config['slave_id']
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value = None
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if address_type == 'coil':
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# 读取线圈状态
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result = client.read_coils(address, 1, unit=slave_id)
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if not result.isError():
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value = 1 if result.bits[0] else 0
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elif address_type == 'discrete_input':
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# 读取离散输入
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result = client.read_discrete_inputs(address, 1, unit=slave_id)
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if not result.isError():
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value = 1 if result.bits[0] else 0
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elif address_type == 'holding_register':
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# 读取保持寄存器
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result = client.read_holding_registers(address, 1, unit=slave_id)
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if not result.isError():
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value = result.registers[0]
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elif address_type == 'input_register':
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# 读取输入寄存器
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result = client.read_input_registers(address, 1, unit=slave_id)
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if not result.isError():
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value = result.registers[0]
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else:
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# 未知的地址类型
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client.close()
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return {
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"success": False,
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"message": f"不支持的地址类型: {address_type}"
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}
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# 关闭连接
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client.close()
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# 检查读取结果
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if value is None:
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return {
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"success": False,
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"message": f"读取Modbus值失败: {result if 'result' in locals() else '未知错误'}"
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}
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return {
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"success": True,
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"value": value,
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"message": f"成功读取Modbus值: {value}"
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}
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except ConnectionException as e:
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logger.error(f"Modbus连接异常: {str(e)}")
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return {
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"success": False,
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"message": f"Modbus连接异常: {str(e)}"
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}
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except ModbusException as e:
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logger.error(f"Modbus操作异常: {str(e)}")
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return {
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"success": False,
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"message": f"Modbus操作异常: {str(e)}"
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}
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except Exception as e:
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logger.error(f"读取Modbus值异常: {str(e)}")
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return {
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"success": False,
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"message": f"读取Modbus值异常: {str(e)}"
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}
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async def write_modbus_value(config: Dict[str, Any], value: int) -> Dict[str, Any]:
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"""
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写入Modbus值
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Args:
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config: Modbus配置信息
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value: 要写入的值
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Returns:
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Dict[str, Any]: 写入结果，包含success字段
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"""
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# 检查是否启用测试模式
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if settings.MODBUS_MOCK_MODE:
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logger.info(f"[测试模式] 模拟写入Modbus值: {config['name']}, 地址: {config['address_number']}, 值: {value}")
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# 模拟写入延迟
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await asyncio.sleep(MOCK_DELAY)
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# 构造测试模式下的响应
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return {
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"success": True,
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"message": f"[测试模式] 成功写入Modbus值: {value}"
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}
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try:
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# 创建Modbus TCP客户端
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client = ModbusTcpClient(
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host=config['ip'],
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port=config['port'],
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timeout=settings.MODBUS_TIMEOUT
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)
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# 连接到Modbus服务器
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if not client.connect():
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return {
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"success": False,
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"message": f"无法连接到Modbus服务器: {config['ip']}:{config['port']}"
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}
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# 根据地址类型写入不同的寄存器
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address_type = config['address_type']
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address = config['address_number']
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slave_id = config['slave_id']
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result = None
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if address_type == 'coil':
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# 写入线圈状态
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result = client.write_coil(address, value == 1, unit=slave_id)
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elif address_type == 'holding_register':
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# 写入保持寄存器
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result = client.write_register(address, value, unit=slave_id)
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else:
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# 不支持写入离散输入和输入寄存器
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client.close()
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return {
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"success": False,
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"message": f"不支持向地址类型 {address_type} 写入值"
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}
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# 关闭连接
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client.close()
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# 检查写入结果
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if result and not result.isError():
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return {
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"success": True,
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"message": f"成功写入Modbus值: {value}"
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}
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else:
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return {
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"success": False,
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"message": f"写入Modbus值失败: {result if result else '未知错误'}"
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}
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except ConnectionException as e:
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logger.error(f"Modbus连接异常: {str(e)}")
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return {
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"success": False,
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"message": f"Modbus连接异常: {str(e)}"
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}
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except ModbusException as e:
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logger.error(f"Modbus操作异常: {str(e)}")
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return {
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"success": False,
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"message": f"Modbus操作异常: {str(e)}"
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}
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except Exception as e:
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logger.error(f"写入Modbus值异常: {str(e)}")
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return {
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"success": False,
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"message": f"写入Modbus值异常: {str(e)}"
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}
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class ModbusBlockHandler(BlockHandler):
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"""Modbus设备操作处理器基类"""
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async def _get_modbus_config(self, instance_name: str, address_number: Optional[int] = None) -> Optional[Dict[str, Any]]:
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"""获取Modbus配置信息"""
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return await get_modbus_config(instance_name, address_number)
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async def _read_modbus_value(self, config: Dict[str, Any]) -> Dict[str, Any]:
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"""读取Modbus值"""
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return await read_modbus_value(config)
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async def _write_modbus_value(self, config: Dict[str, Any], value: int) -> Dict[str, Any]:
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"""写入Modbus值"""
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return await write_modbus_value(config, value)
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# 通用读取Modbus值处理器
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@register_handler(ModbusBlockName.COMMON_READ_NAME)
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class ModbusCommonReadNameBlockHandler(ModbusBlockHandler):
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"""通用读取Modbus值(Name)处理器"""
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async def execute(
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self,
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block: Dict[str, Any],
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input_params: Dict[str, Any],
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context: TaskContext
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) -> Dict[str, Any]:
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"""执行通用读取Modbus值操作"""
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try:
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# 获取关键参数
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instance_name = input_params.get("instanceName")
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address = input_params.get("address")
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remark = input_params.get("remark", "")
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# 参数检查
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if not instance_name:
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result = {
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"success": False,
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"message": "Modbus实例名称不能为空"
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}
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await self._record_task_log(block, result, context)
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return result
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# 获取Modbus配置信息
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config = await self._get_modbus_config(instance_name, address)
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if not config:
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result = {
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"success": False,
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"message": f"未找到Modbus配置: {instance_name}" +
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(f", 地址编号: {address}" if address is not None else "")
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}
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await self._record_task_log(block, result, context)
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return result
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# 重试标志
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retry = True
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retry_count = 0
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while retry:
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# 读取Modbus值
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read_result = await self._read_modbus_value(config)
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if read_result.get("success", False):
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# 读取成功，设置上下文变量
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modbus_value = read_result.get("value")
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context.set_variable("modbusValue", str(modbus_value))
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context.set_block_output(block.get("name"), {"modbusValue": str(modbus_value)})
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# 构建成功消息
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|
|
remark_info = f", 说明: {remark}" if remark else ""
|
|||
|
|
address_info = f", 地址: {config['address_number']}" if 'address_number' in config else ""
|
|||
|
|
|
|||
|
|
result = {
|
|||
|
|
"success": True,
|
|||
|
|
"data": {
|
|||
|
|
"modbusValue": str(modbus_value)
|
|||
|
|
},
|
|||
|
|
"message": f"成功读取Modbus值: 实例: {instance_name}{address_info}, 值: {modbus_value}{remark_info}"
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
else:
|
|||
|
|
# 读取失败，重试
|
|||
|
|
retry_count += 1
|
|||
|
|
logger.warning(f"读取Modbus值失败，准备第 {retry_count} 次重试: {read_result.get('message')}")
|
|||
|
|
# 等待一段时间再重试
|
|||
|
|
await asyncio.sleep(settings.MODBUS_RETRY_INTERVAL)
|
|||
|
|
|
|||
|
|
except Exception as e:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"执行通用读取Modbus值异常: {str(e)}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 通用写入Modbus值处理器
|
|||
|
|
@register_handler(ModbusBlockName.COMMON_WRITE_NAME)
|
|||
|
|
class ModbusCommonWriteNameBlockHandler(ModbusBlockHandler):
|
|||
|
|
"""通用写入Modbus值(Name)处理器"""
|
|||
|
|
|
|||
|
|
async def execute(
|
|||
|
|
self,
|
|||
|
|
block: Dict[str, Any],
|
|||
|
|
input_params: Dict[str, Any],
|
|||
|
|
context: TaskContext
|
|||
|
|
) -> Dict[str, Any]:
|
|||
|
|
"""执行通用写入Modbus值操作"""
|
|||
|
|
try:
|
|||
|
|
# 获取关键参数
|
|||
|
|
instance_name = input_params.get("instanceName")
|
|||
|
|
new_value = input_params.get("newValue")
|
|||
|
|
address = input_params.get("address")
|
|||
|
|
remark = input_params.get("remark", "")
|
|||
|
|
|
|||
|
|
# 参数检查
|
|||
|
|
if not instance_name:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": "Modbus实例名称不能为空"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
if new_value is None:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": "写入值不能为空"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 确保写入值是整数类型
|
|||
|
|
try:
|
|||
|
|
new_value = int(new_value)
|
|||
|
|
except (ValueError, TypeError):
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"写入值必须是整数类型，当前值: {new_value}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 获取Modbus配置信息
|
|||
|
|
config = await self._get_modbus_config(instance_name, address)
|
|||
|
|
if not config:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"未找到Modbus配置: {instance_name}" +
|
|||
|
|
(f", 地址编号: {address}" if address is not None else "")
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 重试标志
|
|||
|
|
retry = True
|
|||
|
|
retry_count = 0
|
|||
|
|
|
|||
|
|
while retry:
|
|||
|
|
# 写入Modbus值
|
|||
|
|
write_result = await self._write_modbus_value(config, new_value)
|
|||
|
|
|
|||
|
|
if write_result.get("success", False):
|
|||
|
|
# 写入成功
|
|||
|
|
# 构建成功消息
|
|||
|
|
remark_info = f", 说明: {remark}" if remark else ""
|
|||
|
|
address_info = f", 地址: {config['address_number']}" if 'address_number' in config else ""
|
|||
|
|
|
|||
|
|
result = {
|
|||
|
|
"success": True,
|
|||
|
|
"message": f"成功写入Modbus值: 实例: {instance_name}{address_info}, 值: {new_value}{remark_info}"
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
else:
|
|||
|
|
# 写入失败，重试
|
|||
|
|
retry_count += 1
|
|||
|
|
logger.warning(f"写入Modbus值失败，准备第 {retry_count} 次重试: {write_result.get('message')}")
|
|||
|
|
# 等待一段时间再重试
|
|||
|
|
await asyncio.sleep(settings.MODBUS_RETRY_INTERVAL)
|
|||
|
|
|
|||
|
|
except Exception as e:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"执行通用写入Modbus值异常: {str(e)}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 通用等待Modbus值处理器
|
|||
|
|
@register_handler(ModbusBlockName.COMMON_WAIT_NAME)
|
|||
|
|
class ModbusCommonWaitNameBlockHandler(ModbusBlockHandler):
|
|||
|
|
"""通用等待Modbus值(Name)处理器"""
|
|||
|
|
|
|||
|
|
async def execute(
|
|||
|
|
self,
|
|||
|
|
block: Dict[str, Any],
|
|||
|
|
input_params: Dict[str, Any],
|
|||
|
|
context: TaskContext
|
|||
|
|
) -> Dict[str, Any]:
|
|||
|
|
"""执行通用等待Modbus值操作"""
|
|||
|
|
try:
|
|||
|
|
# 获取关键参数
|
|||
|
|
instance_name = input_params.get("instanceName")
|
|||
|
|
target_value = input_params.get("targetValue")
|
|||
|
|
address = input_params.get("address")
|
|||
|
|
remark = input_params.get("remark", "")
|
|||
|
|
|
|||
|
|
# 参数检查
|
|||
|
|
if not instance_name:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": "Modbus实例名称不能为空"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
if target_value is None:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": "目标值不能为空"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 确保目标值是整数类型
|
|||
|
|
try:
|
|||
|
|
target_value = int(target_value)
|
|||
|
|
except (ValueError, TypeError):
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"目标值必须是整数类型，当前值: {target_value}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 获取Modbus配置信息
|
|||
|
|
config = await self._get_modbus_config(instance_name, address)
|
|||
|
|
if not config:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"未找到Modbus配置: {instance_name}" +
|
|||
|
|
(f", 地址编号: {address}" if address is not None else "")
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
|
|||
|
|
# 轮询标志
|
|||
|
|
polling = True
|
|||
|
|
poll_count = 0
|
|||
|
|
|
|||
|
|
# 记录开始等待的日志
|
|||
|
|
start_log = {
|
|||
|
|
"success": True,
|
|||
|
|
"message": f"开始等待Modbus值达到目标值: 实例: {instance_name}, 目标值: {target_value}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, start_log, context)
|
|||
|
|
|
|||
|
|
while polling:
|
|||
|
|
# 读取Modbus值
|
|||
|
|
read_result = await self._read_modbus_value(config)
|
|||
|
|
|
|||
|
|
if read_result.get("success", False):
|
|||
|
|
# 读取成功，检查值是否达到目标
|
|||
|
|
current_value = read_result.get("value")
|
|||
|
|
|
|||
|
|
if int(current_value) == target_value:
|
|||
|
|
# 达到目标值
|
|||
|
|
remark_info = f", 说明: {remark}" if remark else ""
|
|||
|
|
address_info = f", 地址: {config['address_number']}" if 'address_number' in config else ""
|
|||
|
|
|
|||
|
|
result = {
|
|||
|
|
"success": True,
|
|||
|
|
"message": f"Modbus值已达到目标值: 实例: {instance_name}{address_info}, 值: {current_value}{remark_info}"
|
|||
|
|
}
|
|||
|
|
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|
|||
|
|
else:
|
|||
|
|
# 未达到目标值，继续轮询
|
|||
|
|
poll_count += 1
|
|||
|
|
if poll_count % 10 == 0: # 每10次轮询记录一次日志
|
|||
|
|
logger.info(f"等待Modbus值，当前值: {current_value}, 目标值: {target_value}, 已轮询 {poll_count} 次")
|
|||
|
|
# 等待一段时间再检查
|
|||
|
|
await asyncio.sleep(settings.MODBUS_POLL_INTERVAL)
|
|||
|
|
else:
|
|||
|
|
# 读取失败，记录错误但继续轮询
|
|||
|
|
poll_count += 1
|
|||
|
|
logger.warning(f"读取Modbus值失败，继续轮询第 {poll_count} 次: {read_result.get('message')}")
|
|||
|
|
# 等待一段时间再重试
|
|||
|
|
await asyncio.sleep(settings.MODBUS_RETRY_INTERVAL)
|
|||
|
|
|
|||
|
|
except Exception as e:
|
|||
|
|
result = {
|
|||
|
|
"success": False,
|
|||
|
|
"message": f"执行通用等待Modbus值异常: {str(e)}"
|
|||
|
|
}
|
|||
|
|
await self._record_task_log(block, result, context)
|
|||
|
|
return result
|