⚡ 初始提交 - FutureOSS v1.0 插件化运行时框架

一切皆为插件的开发者工具运行时框架

🧩 核心特性:
  - 插件热插拔 (importlib 动态加载)
  - 依赖自动解析 (拓扑排序 + 循环检测)
  - 企业级稳定 (熔断/降级/重试/隔离)
  - 事件驱动 (发布/订阅事件总线)
  - 完整配置 (YAML 配置 + 热重载)

store/@{FutureOSS}/http-api/middleware.py

@@ -0,0 +1,57 @@
+"""中间件链 - CORS/日志/限流等"""
+from typing import Callable, Optional, Any
+from .server import Request, Response
+
+
+class Middleware:
+    """中间件基类"""
+    def process(self, ctx: dict[str, Any], next_fn: Callable) -> Optional[Response]:
+        """处理请求"""
+        return None
+
+
+class CorsMiddleware(Middleware):
+    """CORS 中间件"""
+    def process(self, ctx: dict, next_fn: Callable) -> Optional[Response]:
+        ctx["response_headers"] = {
+            "Access-Control-Allow-Origin": "*",
+            "Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
+            "Access-Control-Allow-Headers": "Content-Type",
+        }
+        return None
+
+
+class LoggerMiddleware(Middleware):
+    """日志中间件"""
+    def process(self, ctx: dict, next_fn: Callable) -> Optional[Response]:
+        req = ctx.get("request")
+        if req:
+            print(f"[http-api] {req.method} {req.path}")
+        return None
+
+
+class MiddlewareChain:
+    """中间件链"""
+
+    def __init__(self):
+        self.middlewares: list[Middleware] = []
+        self.add(LoggerMiddleware())
+        self.add(CorsMiddleware())
+
+    def add(self, middleware: Middleware):
+        """添加中间件"""
+        self.middlewares.append(middleware)
+
+    def run(self, ctx: dict[str, Any]) -> Optional[Response]:
+        """执行中间件链"""
+        idx = 0
+
+        def next_fn():
+            nonlocal idx
+            if idx < len(self.middlewares):
+                mw = self.middlewares[idx]
+                idx += 1
+                return mw.process(ctx, next_fn)
+            return None
+
+        return next_fn()