python项目接入nacos实现方式

pip install nacos-sdk-python

from nacos import NacosClient, ConfigException, NacosException

SERVER_ADDRESSES = "127.0.0.1:8848"  # 替换为你的Nacos服务器地址
NAMESPACE = ""  # 命名空间，默认为空字符串
USERNAME = "nacos"  # 用户名，默认为nacos
PASSWORD = "nacos"  # 密码，默认为nacos

client = NacosClient(SERVER_ADDRESSES, namespace=NAMESPACE, username=USERNAME, password=PASSWORD)

try:
    # 注册一个服务
    instance_id = client.register_instance("your-service-name", "127.0.0.1", 8080, "DEFAULT_GROUP", {
        "metadata": {"weight": "1"}
    })
    print(f"Service registered with instance ID: {instance_id}")
except NacosException as e:
    print(f"Failed to register service: {e}")

try:
    # 获取服务实例列表
    instances = client.get_all_instances("your-service-name", "DEFAULT_GROUP")
    for instance in instances:
        print(f"Found service instance: {instance}")
except NacosException as e:
    print(f"Failed to discover services: {e}")

try:
    # 发布一个配置
    data_id = "example-data-id"
    group = "DEFAULT_GROUP"
    content = "your configuration content"
    client.publish_config(data_id, group, content)
    print("Configuration published successfully")
except NacosException as e:
    print(f"Failed to publish configuration: {e}")

try:
    # 获取一个配置
    data_id = "example-data-id"
    group = "DEFAULT_GROUP"
    content = client.get_config(data_id, group)
    print(f"Configuration content: {content}")
except ConfigException as ce:
    # 当配置不存在时会抛出ConfigException
    print(f"Configuration not found: {ce}")
except NacosException as e:
    print(f"Failed to get configuration: {e}")

def callback(old_data, new_data):
    print(f"Configuration changed from '{old_data}' to '{new_data}'")

try:
    # 监听配置变更
    client.add_config_watcher("example-data-id", "DEFAULT_GROUP", callback)
    # 注意：在实际应用中，你需要保持这个监听器活跃，通常是在一个长时间运行的服务中。
except NacosException as e:
    print(f"Failed to add config watcher: {e}")