[GitHub] wu-sheng commented on a change in pull request #738: Concurrency conflicts in Spring plugin #735

[GitBox <gi...@apache.org>]

wu-sheng commented on a change in pull request #738: Concurrency conflicts in Spring plugin #735
URL: https://github.com/apache/incubator-skywalking/pull/738#discussion_r160863648
 
 

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 File path: apm-sniffer/apm-sdk-plugin/spring-plugins/mvc-annotation-commons/src/main/java/org/apache/skywalking/apm/plugin/spring/mvc/commons/EnhanceRequireObjectCache.java
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 @@ -18,25 +18,26 @@
 
 package org.apache.skywalking.apm.plugin.spring.mvc.commons;
 
-import java.lang.reflect.Method;
-import javax.servlet.http.HttpServletResponse;
 import org.springframework.web.context.request.NativeWebRequest;
 
+import javax.servlet.http.HttpServletResponse;
+import java.lang.reflect.Method;
+
 public class EnhanceRequireObjectCache {
     private PathMappingCache pathMappingCache;
-    private NativeWebRequest nativeWebRequest;
-    private HttpServletResponse httpResponse;
+    private ThreadLocal<NativeWebRequest> nativeWebRequest = new ThreadLocal<NativeWebRequest>();
+    private ThreadLocal<HttpServletResponse> httpResponse = new ThreadLocal<HttpServletResponse>();
 
     public void setPathMappingCache(PathMappingCache pathMappingCache) {
         this.pathMappingCache = pathMappingCache;
     }
 
     public HttpServletResponse getHttpServletResponse() {
-        return httpResponse == null ? (HttpServletResponse)nativeWebRequest.getNativeResponse() : httpResponse;
+        return httpResponse.get() == null ? (HttpServletResponse) nativeWebRequest.get().getNativeResponse() : httpResponse.get();
 
 Review comment:
   You should clear the two `ThreadLocal`s after the get operation.

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