Python项目集成Nacos的全流程指南

pip install nacos-sdk-python

from nacos import NacosClient

# 初始化客户端
client = NacosClient("127.0.0.1:8848", namespace="public")

# 服务注册
service_name = "my-service"
client.add_service(service_name, {"ip": "192.168.1.1", "port": 8080})

# 服务发现
instances = client.get_instances(service_name)
for instance in instances:
    print(f"服务地址: {instance.ip}:{instance.port}")

# 发布配置
data_id = "app-config"
group = "DEFAULT_GROUP"
content = "database.url=jdbc:mysql://localhost:3306/test"
client.publish_config(data_id, group, content)

# 获取配置
config = client.get_config(data_id, group)
print(f"配置内容: {config}")

def config_change_callback(config):
    print(f"配置更新: {config['content']}")

client.add_config_watcher(
    data_id="app-config",
    group="DEFAULT_GROUP",
    cb=config_change_callback
)

import asyncio
import threading

async def send_heartbeat():
    while True:
        try:
            response = await asyncio.to_thread(
                lambda: client.send_heartbeat(service_name, "192.168.1.1", 8080)
            )
        except Exception as e:
            logging.error(f"心跳发送失败: {str(e)}")
        await asyncio.sleep(10)

thread = threading.Thread(target=lambda: asyncio.run(send_heartbeat()))
thread.start()

client = NacosClient(
    "127.0.0.1:8848",
    namespace="dev",
    username="nacos",
    password="nacos"
)

try:
    client.get_config(...)
except NacosConnectionException:
    # 降级处理

client = NacosClient(
    "127.0.0.1:8848",
    auth_enabled=True,
    username="admin",
    password="password"
)

# nacos/client.py修改
if platform.system() != 'Windows':
    self.lock = asyncio.Lock()

# settings.py
NACOS_CONFIG = {
    'SERVER_ADDR': 'nacos:8848',
    'NAMESPACE': 'prod',
    'DATA_ID': 'django-config',
    'GROUP': 'WEB_GROUP'
}

# 动态加载配置
def load_nacos_config():
    config = client.get_config(
        NACOS_CONFIG['DATA_ID'],
        NACOS_CONFIG['GROUP']
    )
    # 解析配置并更新Django设置
    ...