Azure Appconfiguration Py

Azure App Configuration SDK for Python

集中化配置管理，支持功能开关和动态设置。

安装

pip install azure-appconfiguration

环境变量

AZURE_APPCONFIGURATION_CONNECTION_STRING=Endpoint=https://<name>.azconfig.io;Id=...;Secret=...
# 或使用 Entra ID：
AZURE_APPCONFIGURATION_ENDPOINT=https://<name>.azconfig.io

认证

连接字符串

from azure.appconfiguration import AzureAppConfigurationClient

client = AzureAppConfigurationClient.from_connection_string(
    os.environ["AZURE_APPCONFIGURATION_CONNECTION_STRING"]
)

Entra ID

from azure.appconfiguration import AzureAppConfigurationClient
from azure.identity import DefaultAzureCredential

client = AzureAppConfigurationClient(
    base_url=os.environ["AZURE_APPCONFIGURATION_ENDPOINT"],
    credential=DefaultAzureCredential()
)

配置设置

获取设置

setting = client.get_configuration_setting(key="app:settings:message")
print(f"{setting.key} = {setting.value}")

使用标签获取

# 标签允许环境特定的值
setting = client.get_configuration_setting(
    key="app:settings:message",
    label="production"
)

设置值

from azure.appconfiguration import ConfigurationSetting

setting = ConfigurationSetting(
    key="app:settings:message",
    value="Hello, World!",
    label="development",
    content_type="text/plain",
    tags={"environment": "dev"}
)

client.set_configuration_setting(setting)

删除设置

client.delete_configuration_setting(
    key="app:settings:message",
    label="development"
)

列出设置

所有设置

settings = client.list_configuration_settings()
for setting in settings:
    print(f"{setting.key} [{setting.label}] = {setting.value}")

按键前缀过滤

settings = client.list_configuration_settings(
    key_filter="app:settings:*"
)

按标签过滤

settings = client.list_configuration_settings(
    label_filter="production"
)

功能开关

设置功能开关

from azure.appconfiguration import ConfigurationSetting
import json

feature_flag = ConfigurationSetting(
    key=".appconfig.featureflag/beta-feature",
    value=json.dumps({
        "id": "beta-feature",
        "enabled": True,
        "conditions": {
            "client_filters": []
        }
    }),
    content_type="application/vnd.microsoft.appconfig.ff+json;charset=utf-8"
)

client.set_configuration_setting(feature_flag)

获取功能开关

setting = client.get_configuration_setting(
    key=".appconfig.featureflag/beta-feature"
)
flag_data = json.loads(setting.value)
print(f"Feature enabled: {flag_data['enabled']}")

列出功能开关

flags = client.list_configuration_settings(
    key_filter=".appconfig.featureflag/*"
)
for flag in flags:
    data = json.loads(flag.value)
    print(f"{data['id']}: {'enabled' if data['enabled'] else 'disabled'}")

只读设置

# 将设置设为只读
client.set_read_only(
    configuration_setting=setting,
    read_only=True
)

# 取消只读
client.set_read_only(
    configuration_setting=setting,
    read_only=False
)

快照

创建快照

from azure.appconfiguration import ConfigurationSnapshot, ConfigurationSettingFilter

snapshot = ConfigurationSnapshot(
    name="v1-snapshot",
    filters=[
        ConfigurationSettingFilter(key="app:*", label="production")
    ]
)

created = client.begin_create_snapshot(
    name="v1-snapshot",
    snapshot=snapshot
).result()

列出快照设置

settings = client.list_configuration_settings(
    snapshot_name="v1-snapshot"
)

异步客户端

from azure.appconfiguration.aio import AzureAppConfigurationClient
from azure.identity.aio import DefaultAzureCredential

async def main():
    credential = DefaultAzureCredential()
    client = AzureAppConfigurationClient(
        base_url=endpoint,
        credential=credential
    )
    
    setting = await client.get_configuration_setting(key="app:message")
    print(setting.value)
    
    await client.close()
    await credential.close()

客户端操作

最佳实践

1. 使用标签进行环境分离（dev、staging、prod）
2. 使用键前缀进行逻辑分组（app:database:、app:cache:）
3. 将生产设置设为只读以防止意外更改
4. 在部署前创建快照以便回滚
5. 在生产环境中使用 Entra ID而非连接字符串
6. 在长时间运行的应用中定期刷新设置
7. 使用功能开关进行渐进式发布和 A/B 测试

适用场景

本技能适用于执行概述中描述的工作流或操作。

限制

• 仅当任务明确匹配上述描述范围时使用本技能。
• 不要将输出视为环境特定验证、测试或专家审查的替代品。
• 如果缺少必需的输入、权限、安全边界或成功标准，请停止并请求澄清。