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templates/crond_tcp.py.tpl

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+#!/usr/bin/env python3
+# -*- coding: UTF-8 -*-
+# Auto-generated from template. DO NOT EDIT DIRECTLY!
+# Device: {device_name} ({device_id})
+
+import time
+import logging
+import os
+import socket
+import sys
+
+# ====== 配置参数（从配置文件读取）======
+TARGET_IP = '{tms_server_ip}'
+TARGET_PORT = {listen_port}
+LOG_FILE = '{base_dir}/log/crond-{device_id}.log'
+RESTART_COMMAND = "{python_path} {base_dir}/bin/{device_id}.py &"
+DEVICE_ID = '{device_id}'
+# =========================
+
+ISOTIMEFORMAT = '%Y-%m-%d %X'
+
+logging.basicConfig(filename=LOG_FILE, filemode="a", level=logging.DEBUG,
+                    format='%(asctime)s - %(levelname)s - %(message)s', datefmt=ISOTIMEFORMAT)
+
+
+def is_port_open(ip, port):
+    """检查指定IP和端口是否可达"""
+    s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
+    s.settimeout(1)
+    try:
+        logging.debug(f"尝试连接到 {{ip}}:{{port}}...")
+        s.connect((ip, int(port)))
+        s.shutdown(socket.SHUT_RDWR)
+        print(f"[{{DEVICE_ID}}] 端口 {{port}} is open")
+        logging.info(f"端口 {{port}} is open")
+        return True
+    except (OSError, socket.timeout) as e:
+        print(f"[{{DEVICE_ID}}] 端口 {{port}} is down")
+        logging.warning(f"端口 {{port}} 检查失败: {{e}}，尝试重启程序")
+        logging.info(f"执行重启命令: {{RESTART_COMMAND}}")
+        os.system(RESTART_COMMAND)
+        return False
+    except ValueError:
+        print(f"错误: 端口 '{{port}}' 不是有效的数字。")
+        logging.error(f"端口 '{{port}}' 不是有效的数字。")
+        return False
+    finally:
+        s.close()
+
+
+if __name__ == '__main__':
+    logging.info(f"[{{DEVICE_ID}}] 启动端口检查程序，检查 {{TARGET_IP}}:{{TARGET_PORT}}")
+    print(f"[{{DEVICE_ID}}] 启动端口检查程序，检查 {{TARGET_IP}}:{{TARGET_PORT}}")
+    is_port_open(TARGET_IP, TARGET_PORT)