reta commented on code in PR #3382:
URL: https://github.com/apache/cxf/pull/3382#discussion_r3824137031


##########
rt/rs/security/oauth-parent/oauth2/src/main/java/org/apache/cxf/rs/security/oauth2/services/AbstractAccessTokenValidator.java:
##########
@@ -105,8 +116,16 @@ protected AccessTokenValidation 
getAccessTokenValidation(String authScheme, Stri
         }
 
         AccessTokenValidation accessTokenV = null;
+        AccessTokenValidationCacheEntry cacheEntry = null;
         if (maxValidationDataCacheSize > 0) {
-            accessTokenV = accessTokenValidations.get(authSchemeData);
+            cacheEntry = accessTokenValidations.get(authSchemeData);
+            if (cacheEntry != null) {
+                if (isValidationDataCacheEntryExpired(cacheEntry)) {

Review Comment:
   Do we concerned about the race here: new token gets added, replacing the 
existing one, while we are checking the expiration?



##########
rt/rs/security/oauth-parent/oauth2/src/main/java/org/apache/cxf/rs/security/oauth2/services/AbstractAccessTokenValidator.java:
##########
@@ -105,8 +116,16 @@ protected AccessTokenValidation 
getAccessTokenValidation(String authScheme, Stri
         }
 
         AccessTokenValidation accessTokenV = null;
+        AccessTokenValidationCacheEntry cacheEntry = null;
         if (maxValidationDataCacheSize > 0) {
-            accessTokenV = accessTokenValidations.get(authSchemeData);
+            cacheEntry = accessTokenValidations.get(authSchemeData);
+            if (cacheEntry != null) {
+                if (isValidationDataCacheEntryExpired(cacheEntry)) {

Review Comment:
   Are we concerned about the race here: new token gets added, replacing the 
existing one, while we are checking the expiration?



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