acf0306080
- 添加 is_valid_hex() 函数检测16进制格式 - 有效的16进制（偶数长度+0-9a-fA-F）按 bytes.fromhex() 发送 - 非16进制字符串按 UTF-8 编码直接发送 - 日志中标注发送类型 (hex/string)
130 lines
4.8 KiB
Smarty
130 lines
4.8 KiB
Smarty
#!/usr/bin/env python3
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# -*- coding: UTF-8 -*-
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# Auto-generated from template. DO NOT EDIT DIRECTLY!
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import sys
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import socket
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import time
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import logging
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import re
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def is_valid_hex(hex_str):
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"""检查字符串是否为有效的16进制格式（只包含0-9,a-f,A-F且长度为偶数）"""
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if not hex_str:
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return False
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# 必须是偶数长度
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if len(hex_str) % 2 != 0:
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return False
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# 只能包含16进制字符
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return bool(re.match(r'^[0-9a-fA-F]+$', hex_str))
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def udp_command_send(upc_addr, upc_command, data, timeout=2):
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"""通过UDP发送数据并接收响应"""
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.settimeout(timeout)
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try:
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logging.debug(f"尝试发送UDP数据到 {{upc_addr[0]}}:{{upc_addr[1]}}...")
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logging.info(f"正在发送UDP命令 '{{upc_command}}' 到 {{upc_addr}}: {{data!r}} (原始字节)")
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sock.sendto(data, upc_addr)
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logging.debug(f"UDP数据发送完成。")
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# 尝试接收响应
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recv_buffer_size = 1024
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try:
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logging.debug(f"等待从 {{upc_addr}} 接收UDP响应...")
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response_bytes, addr = sock.recvfrom(recv_buffer_size)
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if response_bytes:
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logging.info(f"从 {{addr}} 收到UDP原始响应字节: {{response_bytes!r}}")
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try:
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response_str = response_bytes.decode('utf-8', errors='ignore')
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logging.info(f"从 {{addr}} 收到UDP解码响应字符串: '{{response_str}}'")
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except Exception as decode_e:
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logging.warning(f"解码UDP响应时发生错误: {{decode_e}}")
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else:
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logging.info(f"未收到UDP响应数据。")
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except socket.timeout:
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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）。")
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except OSError as recv_e:
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logging.error(f"接收UDP响应时发生网络错误: {{recv_e}}")
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sock.close()
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logging.debug(f"UDP socket关闭。")
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return True
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except OSError as e:
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logging.error(f"UDP命令 '{{upc_command}}' 发送至 {{upc_addr}} 失败: {{e}}")
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return False
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finally:
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try:
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sock.close()
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except:
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pass
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# 指令定义表（从配置文件读取）
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COMMAND_DEFINITIONS = {command_definitions}
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def upc_send_command(upc_addr, upc_command, log_file):
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"""将命令发送给终端设备"""
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data = None
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send_type = "unknown"
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# 查找指令定义
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if upc_command in COMMAND_DEFINITIONS:
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cmd_value = COMMAND_DEFINITIONS[upc_command]
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# 判断是否为有效的16进制格式
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if is_valid_hex(cmd_value):
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data = bytes.fromhex(cmd_value)
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send_type = "hex"
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logging.debug(f"命令 '{{upc_command}}' 的值 '{{cmd_value}}' 识别为16进制格式")
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else:
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# 作为纯字符串发送
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data = cmd_value.encode('utf-8')
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send_type = "string"
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logging.debug(f"命令 '{{upc_command}}' 的值 '{{cmd_value}}' 识别为字符串格式")
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if data is None:
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datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
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logstr = f"{{datetime_str}} 未知命令: {{upc_command}}，没有对应的数据可发送。"
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logging.warning(logstr)
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print(logstr)
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else:
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i = 1
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while i <= 3: # 尝试发送3次
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if udp_command_send(upc_addr, upc_command, data):
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datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
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logstr = f"{{datetime_str}} {{upc_command}}命令第{{i}}次发送成功 ({{send_type}})"
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logging.info(logstr)
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return
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else:
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datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
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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"
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logging.warning(logstr)
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time.sleep(3)
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i = i + 1
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datetime_str = time.strftime(ISOTIMEFORMAT, time.localtime(time.time()))
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logstr = f"{{datetime_str}} {{upc_command}}命令在3次尝试后发送均失败！"
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logging.error(logstr)
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if __name__ == '__main__':
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ISOTIMEFORMAT = '%Y-%m-%d %X'
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UPC_DEV_IP = sys.argv[1]
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UPC_DEV_PORT = int(sys.argv[2])
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upc_command = sys.argv[3]
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LOG_FILE = sys.argv[4]
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logging.basicConfig(filename=LOG_FILE, filemode="a", level=logging.DEBUG)
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UPC_ADDR = (UPC_DEV_IP, UPC_DEV_PORT)
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# UDP 是无连接的，无需像TCP那样预先检查端口连通性
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# 直接发送数据
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logging.info(f"UDP模式：准备发送命令到 {{UPC_ADDR}}")
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upc_send_command(UPC_ADDR, upc_command, LOG_FILE)
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