sentinel springwebmvc不支持异步async请求 · alibaba/Sentinel#2447

(1 评论) (0 反应) (0 负责人)Java (23,109 star) (8,150 fork)batch import

area/integrationsgood first issuekind/bug

描述

我们在Controller使用了WebAsyncTask的异步返回方式，这种情况下，AbstractSentinelInterceptor中的prehandle会执行两次，rckey变成了2，但是afterCompletion只会执行一次（而且还是在另外一个线程请求的），导致clean的逻辑无法执行，这样entry和context在threadlocal中一直无法清除，最终oom

贡献者指南

技术栈: javaspring
领域: backend
议题类型: bug
难度: 4
预计时间: 1-2 days
活动状态: stale
清晰度: clear
前置要求: JavaSpring Web MVCSentinelAsync request handling
新手友好度: 20
研究方向: Investigate the AbstractSentinelInterceptor class in Sentinel's Spring Web MVC integration. Focus on how preHandle and afterCompletion are called for async requests (WebAsyncTask). Check the thread local management for entry and context. Consider adding async support similar to Spring's async handler interceptor pattern. Also examine existing test cases for async endpoints. Might need to ensure afterCompletion is called on the original thread or handle cleanup appropriately.