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0313界面对接

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fujinliang
2026-03-13 21:04:19 +08:00
parent 6e74eaf206
commit 8aeaffa885
33 changed files with 1541 additions and 419 deletions
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151
opc/opcua_client_feed.py
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@ -3,53 +3,86 @@ from opcua import Client, ua
import time
from datetime import datetime
import configparser
from threading import Thread
# class OpcuaUiSignal:
# value_changed = Signal(str, str, object)
# opc_disconnected = Signal(str) # OPC服务断开信号，参数：断开原因
# opc_reconnected = Signal() # OPC重连成功信号
# opc_log = Signal(str) # OPC运行日志信号，参数：日志信息
from threading import Thread,RLock
import logging
import queue
logging.getLogger("opcua").setLevel(logging.WARNING)
logging.getLogger("opcua.client.ua_client").setLevel(logging.WARNING)
logging.getLogger("opcua.uaprotocol").setLevel(logging.WARNING)
#控制程序opcua 需要需要在opc_config中配置_f结尾的key才会收到通知
# Opcua回调处理器
class SubscriptionHandler:
def __init__(self):
def __init__(self,parent):
self.node_id_to_name = {}
# self.opc_signal = opc_signal
#设置派单模式(1自动派单 2手动派单0未知)
# self.pd_set_mode=0
# #设置方量{ID:派单表ID，Volumn:修改后方量}
# self.pd_set_volumn=''
# #派单通知数据{ErpID:ID:派单表ID,Flag:状态，ErrorMsg:失败异常信息 }
# self.pd_notify=''
# 添加队列和锁
self.notification_queue = queue.Queue()
self.processing_thread = Thread(target=self._process_notifications, daemon=True,name="opcua_recv_thread")
self.lock = RLock() # 可重入锁
self.parent=parent
self.notify_callback=self.parent.notify_callback
def start_accept(self):
self.processing_thread.start()
def datachange_notification(self, node, val, data):
try:
node_id = node.nodeid.to_string()
var_name = self.node_id_to_name.get(node_id)
# self.opc_signal.value_changed.emit(node_id, var_name, val)
print(f"node_id: {node_id}, var_name: {var_name}, val: {val}")
self.notification_queue.put_nowait((var_name, val))
# setattr(self, var_name, val)
# if self.notify_callback:
# self.notify_callback(var_name,val)
except Exception as e:
err_msg = f"opcua解析值变化事件失败: {e}"
# self.opc_signal.opc_log.emit(err_msg)
print(err_msg)
def _process_notifications(self):
"""后台线程处理通知（串行执行）"""
while self.parent.is_running:
try:
var_name, val = self.notification_queue.get(timeout=1)
# 使用锁保护共享资源
with self.lock:
self.notify_callback(var_name,val)
self.notification_queue.task_done()
except queue.Empty:
continue
except Exception as e:
print(f"处理通知失败: {e}")
class OpcuaClientFeed(Thread):
def __init__(self, parent=None):
def __init__(self,notify_callback=None, parent=None):
super().__init__(parent)
self.server_url = ""
self.client = None
self.name="opcua_feed_client"
self.target_var_paths = []
#订阅配置文件中的参数
self.subscription_name=["pd_notify","pd_set_mode","pd_set_volume"]
# self.server_url = ""
self.read_opc_config() # 读取配置文件
self.client = Client(self.server_url) # 初始化opc客户端
self.notify_callback=notify_callback
self.connected = False
self.subscription = None
self.monitored_items = []
self.is_running = True # 线程运行标志位
self.node_id_mapping = {} # node_id 和 可读变量名的映射表
self.is_reconnect_tip_sent = False # 重连失败提示是否已发送
self.handler = SubscriptionHandler(self)
# self.opc_signal = OpcuaUiSignal()
# self.handler = SubscriptionHandler(self.opc_signal)
self.handler = SubscriptionHandler()
self.target_var_paths = []
# 参数
self.heartbeat_interval = None # 心跳检测间隔
self.reconnect_interval = None # 首次/掉线重连间隔
self.sub_interval = None # 订阅间隔 (单位:ms)
def start_accept(self):
self.handler.start_accept()
def stop_run(self):
"""停止线程+断开连接"""
@ -65,7 +98,6 @@ class OpcuaClientFeed(Thread):
self.connected = True
msg = f"成功连接到OPCUA服务器: {self.server_url}"
print(msg)
# self.opc_signal.opc_log.emit(msg)
self.is_reconnect_tip_sent = False
return True
except Exception as e:
@ -73,7 +105,7 @@ class OpcuaClientFeed(Thread):
err_msg = f"连接OPCUA服务器失败: {e}"
print(err_msg)
if not self.is_reconnect_tip_sent:
# self.opc_signal.opc_log.emit(err_msg)
print(err_msg)
# 标记为已发送，后续不重复在UI上显示
self.is_reconnect_tip_sent = True
return False
@ -111,41 +143,37 @@ class OpcuaClientFeed(Thread):
if not self.connected:
return False
try:
# self.opc_signal.opc_log.emit("开始构建nodeid映射表...")
objects_node = self.client.get_objects_node()
self.handler.node_id_to_name = self.node_id_mapping
for var_name, path_list in self.target_var_paths:
target_node = objects_node.get_child(path_list)
node_id = target_node.nodeid.to_string()
self.node_id_mapping[node_id] = var_name
# self.opc_signal.opc_log.emit("nodeid映射表构建成功")
print("nodeid映射表构建成功")
return True
except Exception as e:
err_msg = f"构建{var_name}映射表失败: {e}"
print(err_msg)
# self.opc_signal.opc_log.emit(err_msg)
return False
def create_multi_subscription(self, interval=None):
"""订阅多个变量(基于映射表的nodeid)"""
if not self.connected:
return
if not self.node_id_mapping and not self.build_node_id_mapping():
if not self.node_id_mapping:
return
try:
interval = int(interval) if interval else self.sub_interval
self.subscription = self.client.create_subscription(interval, self.handler)
# self.opc_signal.opc_log.emit(f"opcua订阅创建成功(间隔：{interval}ms)")
for node_id, var_name in self.node_id_mapping.items():
var_node = self.client.get_node(node_id)
monitored_item = self.subscription.subscribe_data_change(var_node)
self.monitored_items.append(monitored_item)
# self.opc_signal.opc_log.emit(f"已订阅变量: {var_name} (nodeid: {node_id})")
print(f"已订阅变量: {var_name} (nodeid: {node_id})")
for node_id, var_name in self.node_id_mapping.items():
if var_name in self.subscription_name:
var_node = self.client.get_node(node_id)
monitored_item = self.subscription.subscribe_data_change(var_node)
self.monitored_items.append(monitored_item)
print(f"已订阅变量: {var_name} (nodeid: {node_id})")
except Exception as e:
err_msg = f"创建批量订阅失败: {e}"
print(err_msg)
# self.opc_signal.opc_log.emit(err_msg)
def read_opc_config(self, cfg_path = "config/opc_config.ini"):
"""读取OPC配置文件, 初始化所有参数和节点列表"""
@ -157,23 +185,19 @@ class OpcuaClientFeed(Thread):
self.heartbeat_interval = cfg.getint("OPC_SERVER_CONFIG", "heartbeat_interval")
self.reconnect_interval = cfg.getint("OPC_SERVER_CONFIG", "reconnect_interval")
self.sub_interval = cfg.getint("OPC_SERVER_CONFIG", "sub_interval")
# 2. 读取OPC节点配置
node_section = cfg["OPC_NODE_LIST"]
for readable_name, node_path_str in node_section.items():
node_path_list = node_path_str.split(",")
self.target_var_paths.append( (readable_name, node_path_list) )
# print("target_var_paths", self.target_var_paths)
print("target_var_paths", self.target_var_paths)
except Exception as e:
print(f"读取配置文件失败: {e}，使用默认配置启动！")
self.server_url = "opc.tcp://localhost:4840/zjsh_feed/server/"
self.heartbeat_interval = 4
self.reconnect_interval = 2
self.sub_interval = 500
self.target_var_paths = [
("upper_weight", ["2:upper", "2:upper_weight"]),
("lower_weight", ["2:lower", "2:lower_weight"])
]
# 参数合法性检验
self.heartbeat_interval = self.heartbeat_interval if isinstance(self.heartbeat_interval, int) and self.heartbeat_interval >=1 else 4
self.reconnect_interval = self.reconnect_interval if isinstance(self.reconnect_interval, int) and self.reconnect_interval >=1 else 2
@ -185,26 +209,31 @@ class OpcuaClientFeed(Thread):
:param var_readable_name: 变量可读名称（如"upper_weight")
:param value: 要写入的值
"""
max_wait = 30 # 最大等待30秒
wait_count = 0
while (not self.node_id_mapping and wait_count < max_wait):
time.sleep(0.5)
wait_count += 1
if wait_count % 2 == 0: # 每2秒打印一次
print(f"等待OPC连接中...({wait_count/2}秒)")
if not self.connected:
# self.opc_signal.opc_log.emit(f"{var_readable_name}写入失败: OPC服务未连接")
print(f"{var_readable_name}写入失败: OPC服务未连接")
return
target_node_id = None
for node_id, name in self.node_id_mapping.items():
if name == var_readable_name:
target_node_id = node_id
break
if not target_node_id:
# self.opc_signal.opc_log.emit(f"写入失败：未找到变量名 {var_readable_name} 对应的nodeid")
return
try:
target_node = self.client.get_node(target_node_id)
# variant = ua.Variant(float(value), ua.VariantType.Double)
target_node.set_value(value)
# self.opc_signal.opc_log.emit(f"写入成功：{var_readable_name} = {value}")
except Exception as e:
err_msg = f"opcua写入值失败: {e}"
print(err_msg)
# self.opc_signal.opc_log.emit(err_msg)
# ===== 心跳检测函数 =====
def _heartbeat_check(self):
@ -215,45 +244,38 @@ class OpcuaClientFeed(Thread):
except Exception as e:
err_msg = f"心跳检测失败, OPCUA服务已断开 {e}"
print(err_msg)
# self.opc_signal.opc_log.emit(err_msg)
return False
# ===== 掉线重连函数 =====
def _auto_reconnect(self):
"""掉线后自动重连+重建映射+恢复订阅"""
# self.opc_signal.opc_disconnected.emit("OPC服务掉线, 开始自动重连...")
print("OPC服务掉线, 开始自动重连...")
try:
self.disconnect()
except Exception as e:
print(f"_auto_reconnect: 断开旧连接时出现异常: {e}")
while self.is_running:
# self.opc_signal.opc_log.emit(f"重试连接OPC服务器: {self.server_url}")
print(f"重试连接OPC服务器: {self.server_url}")
if self.connect():
self.build_node_id_mapping()
self.create_multi_subscription()
# self.opc_signal.opc_reconnected.emit()
# self.opc_signal.opc_log.emit("OPCUA服务器重连成功, 所有订阅已恢复正常")
print("OPCUA服务器重连成功, 所有订阅已恢复正常")
break
time.sleep(self.reconnect_interval)
def _init_connect_with_retry(self):
"""连接opc服务器"""
# self.opc_signal.opc_log.emit("OPC客户端初始化, 开始连接服务器...")
print("OPC客户端初始化, 开始连接服务器...")
while self.is_running:
if self.connect():
self.build_node_id_mapping()
self.create_multi_subscription()
break
# self.opc_signal.opc_log.emit(f"连接OPCUA服务器失败, {self.reconnect_interval}秒后重试...")
print(f"连接OPCUA服务器失败, {self.reconnect_interval}秒后重试...")
time.sleep(self.reconnect_interval)
def run(self) -> None:
"""opcua客户端线程主函数"""
self.read_opc_config() # 读取配置文件
self.client = Client(self.server_url) # 初始化opc客户端
# 连接opc服务器
self._init_connect_with_retry()
@ -269,6 +291,9 @@ class OpcuaClientFeed(Thread):
if __name__ == "__main__":
opcua_client = OpcuaClientFeed()
opcua_client.run()
opcua_client.write_value_by_name("upper_weight", 100.0)
opcua_client.start()
opcua_client.write_value_by_name("pd_set_mode", 1)
while True:
time.sleep(1)