feat(client): 添加 Python 客户端及示例应用

- 新增 python-client 模块，提供 ConfigClient 配置拉取、定时同步、变更监听 - 使用 pyaes 替代 cryptography 实现 AES 解密，避免编译问题 - 新增 python-client-demo Flask 示例应用 - .gitignore 添加 Python 相关忽略规则
2026-02-05 21:05:19 +08:00
parent 6653c752e7
commit c31746d7d1
11 changed files with 431 additions and 0 deletions
@@ -0,0 +1,72 @@
+import json
+import logging
+import os
+
+from flask import Flask
+from kenaito_conf import Config, ConfigClient
+
+logging.basicConfig(level=logging.INFO, format="%(asctime)s [%(name)s] %(message)s")
+logger = logging.getLogger("demo")
+
+app = Flask(__name__)
+
+# Config defaults (overridden by remote config center)
+config_values = {
+    "database.host": os.getenv("DATABASE_HOST", "192.168.1.1"),
+    "database.port": os.getenv("DATABASE_PORT", "8888"),
+    "database.name": os.getenv("DATABASE_NAME", "xxxx"),
+    "database.user": os.getenv("DATABASE_USER", "xxxx"),
+    "database.password": os.getenv("DATABASE_PASSWORD", "xxxxxxxx"),
+}
+
+client: ConfigClient | None = None
+
+
+def on_config_changed(changed: dict[str, str]) -> None:
+    for k, v in changed.items():
+        if k in config_values:
+            config_values[k] = v
+            logger.info("config updated: %s = %s", k, v)
+
+
+def create_client() -> ConfigClient:
+    cfg = Config(
+        base_url=os.getenv("KENAITO_BASE_URL", "http://localhost:8080"),
+        app_name=os.getenv("KENAITO_APP_NAME", "kenaito-springboot-demo"),
+        env=os.getenv("KENAITO_PROFILE", "daily"),
+        version=os.getenv("KENAITO_VERSION", "latest"),
+        token=os.getenv("KENAITO_TOKEN", ""),
+        sync_interval=int(os.getenv("KENAITO_SYNC_INTERVAL", "30")),
+        cache_dir=os.getenv("KENAITO_CACHE_DIR", "."),
+    )
+    c = ConfigClient(cfg)
+    c.on_change(on_config_changed)
+    c.start()
+    return c
+
+
+@app.route("/")
+def index():
+    return json.dumps(config_values, ensure_ascii=False, indent=2), 200, {
+        "Content-Type": "application/json; charset=utf-8",
+    }
+
+
+@app.route("/health")
+def health():
+    return "OK"
+
+
+if __name__ == "__main__":
+    try:
+        client = create_client()
+        remote = client.get_all()
+        for k in config_values:
+            if k in remote:
+                config_values[k] = remote[k]
+        logger.info("loaded %d configs from remote", len(remote))
+    except Exception:
+        logger.exception("failed to init config client, using local defaults")
+
+    port = int(os.getenv("SERVER_PORT", "8082"))
+    app.run(host="0.0.0.0", port=port)