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Python3 Client for Ctrip's Apollo

Project description

py3-apollo-client - Python3 Client for Ctrip's Apollo

License

方便Python接入配置中心框架 Apollo 所开发的Python版本客户端。

基于 onecer/apollo-python 修改, 主要修复配置未更新也会触发change_listener

链接


依赖


  • python 3.x

安装


pip install py3-apollo-client

使用


导入包

from py3_apollo import ApolloClient
app_id = 'demo-service'
config_url = 'http://127.0.0.1:8080'
cluster = 'default'
secret = ''
env = 'DEV'

client = ApolloClient(app_id=app_id, config_url=config_url, cluster=cluster, secret=secret, env=env)
lm_API_KEY = client.get_value("lm_API_KEY")

也默认支持通过环境变量来传递值,基本和 Java 客户端保持一致

客户端初始化参数

参数 说明 默认值 环境变量
app_id 应用名 APP_ID
config_url 配置中心地址 http://127.0.0.1:8080 ${ENV}_META or APOLLO_META
cluster 集群名 default IDC
secret 访问密钥 APOLLO_ACCESS_KEY_SECRET
env 环境 DEV ENV
client_ip 客户端ip 获取当前 IP CLIENT_IP
cache_path 配置缓存路径 tmp/apollo/cache APOLLO_CACHE_PATH
need_hot_update 是否需要热更新 True -
change_listener 配置变更监听器(回调函数) None -
log_level 日志级别 INFO LOG_LEVEL
notification_map 通知配置 (dict) None -

配置变更监听器 change_listener

"""
接受 4 个参数 
action:delete \ add  \ update
namespace:namespace
key:key
old_value:old_value
"""
def change_listener(action, namespace, key, old_value):
    print(f"action:{action} namespace: {namespace} key: {key} old_value: {old_value}")

通知配置 notification_map

notification_map = {
    "application": ["application"],
    "application.yml": ["application.yml"]
}

配置优先级

*** 环境变量 > 代码配置 ***

如果环境变量存在,则优先使用环境变量的值。

如果环境中存在 ENV的环境变量, 如 ENV=DEV。则优先组合出 DEV_META 这个环境变量名称来获取 config url。 如果该环境变量不存在,则取 APOLLO_META 环境变量的值。如果 APOLLO_META 也不存在,则使用代码定义的 config_url 的值。

其它环境变量同理,以此类推。

热更新

默认会启动一个线程来定时更新本地缓存的配置,所以,如果每次用的是 get_value 来获取配置,可以实现配置热更新。

本地打包 wheel

# install uv
pip install uv

# build
uv build

# upload
uv publish --token <TOKEN>

License


This is free and unencumbered software released into the public domain.

Anyone is free to copy, modify, publish, use, compile, sell, or distribute this software, either in source code form or as a compiled binary, for any purpose, commercial or non-commercial, and by any means.

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