写一个 python daemo 注册到nacos中

"""
注册到nacos中的deamon
nacos:2.3.2(模式:standalone)
python:3.6.8

nohup python3 demon.py &
"""
import requests
import threading
import time

# Nacos 服务器地址和端口
nacos_url = "http://127.0.0.1:8848"

# Nacos 登录信息
username = "test"
password = "123456"

# 服务注册信息
service_name = "suyajun-service"
ip = "127.0.0.1"
port = 8080

# 登录 Nacos 获取 token
def login_to_nacos(url, username, password):
    login_url = f"{url}/nacos/v1/auth/login"
    login_data = {
        "username": username,
        "password": password
    }
    response = requests.post(login_url, data=login_data)
    if response.status_code == 200:
        return response.json().get("accessToken")
    else:
        raise Exception(f"Failed to login to Nacos: {response.text}")

# 注册服务到 Nacos
def register_service(url, token, service_name, ip, port):
    register_url = f"{url}/nacos/v1/ns/instance"
    register_data = {
        "serviceName": service_name,
        "ip": ip,
        "port": port,
        "namespaceId": "public",  # 这里使用 public 命名空间，如果有其他命名空间请替换
        "groupName": "DEFAULT_GROUP",  # 默认组名
        "weight": 1.0,
        "enable": "true",
        "healthy": "true",
        "metadata": "{}",
        "ephemeral": "true",
        "accessToken": token
    }
    response = requests.post(register_url, params=register_data)
    if response.status_code == 200:
        print("Service registered successfully")
    else:
        raise Exception(f"Failed to register service: {response.status_code} - {response.text}")

# 发送心跳信息到 Nacos
def send_heartbeat(url, token, service_name, ip, port):
    while True:
        heartbeat_url = f"{url}/nacos/v1/ns/instance/beat"
        heartbeat_data = {
            "serviceName": service_name,
            "ip": ip,
            "port": port,
            "namespaceId": "public",  # 这里使用 public 命名空间，如果有其他命名空间请替换
            "groupName": "DEFAULT_GROUP",  # 默认组名
            "ephemeral": "true",
            "accessToken": token
        }
        response = requests.put(heartbeat_url, params=heartbeat_data)
        if response.status_code == 200:
            print("Heartbeat sent successfully")
        else:
            print(f"Failed to send heartbeat: {response.status_code} - {response.text}")
        
        # 每 5 秒发送一次心跳
        time.sleep(5)

# 主函数
def main():
    try:
        # 登录获取 token
        token = login_to_nacos(nacos_url, username, password)
        print(f"Login successful, token: {token}")

        # 注册服务
        register_service(nacos_url, token, service_name, ip, port)

        # 启动心跳线程
        heartbeat_thread = threading.Thread(target=send_heartbeat, args=(nacos_url, token, service_name, ip, port))
        heartbeat_thread.daemon = True
        heartbeat_thread.start()

        # 保持主线程运行
        while True:
            time.sleep(1)
    except Exception as e:
        print(e)

if __name__ == "__main__":
    main()