76147bae94
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)
58 lines
1.6 KiB
Python
58 lines
1.6 KiB
Python
"""中间件链 - CORS/日志/限流等"""
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from typing import Callable, Optional, Any
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from .server import Request, Response
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class Middleware:
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"""中间件基类"""
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def process(self, ctx: dict[str, Any], next_fn: Callable) -> Optional[Response]:
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"""处理请求"""
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return None
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class CorsMiddleware(Middleware):
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"""CORS 中间件"""
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def process(self, ctx: dict, next_fn: Callable) -> Optional[Response]:
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ctx["response_headers"] = {
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"Access-Control-Allow-Origin": "*",
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"Access-Control-Allow-Methods": "GET, POST, PUT, DELETE, OPTIONS",
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"Access-Control-Allow-Headers": "Content-Type",
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}
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return None
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class LoggerMiddleware(Middleware):
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"""日志中间件"""
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def process(self, ctx: dict, next_fn: Callable) -> Optional[Response]:
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req = ctx.get("request")
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if req:
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print(f"[http-api] {req.method} {req.path}")
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return None
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class MiddlewareChain:
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"""中间件链"""
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def __init__(self):
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self.middlewares: list[Middleware] = []
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self.add(LoggerMiddleware())
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self.add(CorsMiddleware())
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def add(self, middleware: Middleware):
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"""添加中间件"""
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self.middlewares.append(middleware)
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def run(self, ctx: dict[str, Any]) -> Optional[Response]:
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"""执行中间件链"""
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idx = 0
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def next_fn():
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nonlocal idx
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if idx < len(self.middlewares):
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mw = self.middlewares[idx]
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idx += 1
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return mw.process(ctx, next_fn)
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return None
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return next_fn()
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