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templates/sender_udp.py.tpl

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+#!/usr/bin/env python3
+# -*- coding: UTF-8 -*-
+# Auto-generated from template. DO NOT EDIT DIRECTLY!
+
+import sys
+import socket
+import time
+import logging
+
+
+def udp_command_send(upc_addr, upc_command, data, timeout=2):
+    """通过UDP发送数据并接收响应"""
+    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
+    sock.settimeout(timeout)
+    
+    try:
+        logging.debug(f"尝试发送UDP数据到 {{upc_addr[0]}}:{{upc_addr[1]}}...")
+        
+        logging.info(f"正在发送UDP命令 '{{upc_command}}' 到 {{upc_addr}}: {{data!r}} (原始字节)")
+        sock.sendto(data, upc_addr)
+        logging.debug(f"UDP数据发送完成。")
+
+        # 尝试接收响应
+        recv_buffer_size = 1024
+        try:
+            logging.debug(f"等待从 {{upc_addr}} 接收UDP响应...")
+            response_bytes, addr = sock.recvfrom(recv_buffer_size)
+            if response_bytes:
+                logging.info(f"从 {{addr}} 收到UDP原始响应字节: {{response_bytes!r}}")
+                try:
+                    response_str = response_bytes.decode('utf-8', errors='ignore')
+                    logging.info(f"从 {{addr}} 收到UDP解码响应字符串: '{{response_str}}'")
+                except Exception as decode_e:
+                    logging.warning(f"解码UDP响应时发生错误: {{decode_e}}")
+            else:
+                logging.info(f"未收到UDP响应数据。")
+        except socket.timeout:
+            logging.warning(f"接收UDP响应超时（设备可能不返回响应，这通常是正常的）。")
+        except OSError as recv_e:
+            logging.error(f"接收UDP响应时发生网络错误: {{recv_e}}")
+
+        sock.close()
+        logging.debug(f"UDP socket关闭。")
+        return True
+    except OSError as e:
+        logging.error(f"UDP命令 '{{upc_command}}' 发送至 {{upc_addr}} 失败: {{e}}")
+        return False
+    finally:
+        try:
+            sock.close()
+        except:
+            pass
+
+
+# 指令定义表（从配置文件读取）
+COMMAND_DEFINITIONS = {command_definitions}
+
+
+def upc_send_command(upc_addr, upc_command, log_file):
+    """将命令发送给终端设备"""
+    data = None
+    
+    # 查找指令定义
+    if upc_command in COMMAND_DEFINITIONS:
+        hex_str = COMMAND_DEFINITIONS[upc_command]
+        data = bytes.fromhex(hex_str)
+    
+    if data is None:
+        datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
+        logstr = f"{{datetime_str}} 未知命令: {{upc_command}}，没有对应的数据可发送。"
+        logging.warning(logstr)
+        print(logstr)
+    else:
+        i = 1
+        while i <= 3:  # 尝试发送3次
+            if udp_command_send(upc_addr, upc_command, data):
+                datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
+                logstr = f"{{datetime_str}} {{upc_command}}命令第{{i}}次发送成功"
+                logging.info(logstr)
+                return
+            else:
+                datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
+                logstr = f"{{datetime_str}} {{upc_command}}命令第{{i}}次发送失败，3秒后进行第{{i+1}}次尝试"
+                logging.warning(logstr)
+                time.sleep(3)
+            i = i + 1
+        
+        datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
+        logstr = f"{{datetime_str}} {{upc_command}}命令在3次尝试后发送均失败！"
+        logging.error(logstr)
+
+
+if __name__ == '__main__':
+    ISOTIMEFORMAT = '%Y-%m-%d %X'
+    
+    UPC_DEV_IP = sys.argv[1]
+    UPC_DEV_PORT = int(sys.argv[2])
+    upc_command = sys.argv[3]
+    LOG_FILE = sys.argv[4]
+
+    logging.basicConfig(filename=LOG_FILE, filemode="a", level=logging.DEBUG)
+    UPC_ADDR = (UPC_DEV_IP, UPC_DEV_PORT)
+
+    # UDP 是无连接的，无需像TCP那样预先检查端口连通性
+    # 直接发送数据
+    logging.info(f"UDP模式：准备发送命令到 {{UPC_ADDR}}")
+    upc_send_command(UPC_ADDR, upc_command, LOG_FILE)