gaoran10 commented on code in PR #20030:
URL: https://github.com/apache/pulsar/pull/20030#discussion_r1176056730


##########
pulsar-broker-common/src/main/java/org/apache/pulsar/broker/authentication/AuthenticationProviderToken.java:
##########
@@ -158,19 +164,18 @@ public String getAuthMethodName() {
 
     @Override
     public String authenticate(AuthenticationDataSource authData) throws 
AuthenticationException {
+        String token;
         try {
             // Get Token
-            String token;
             token = getToken(authData);

Review Comment:
   The method `getToken` is static, some methods use it and catch exceptions to 
record failure metrics, such as OpenID provider, if we increment the 
`INVALID_AUTH_DATA` error in the `getToken` method, this will generate repeat 
failure records.
   
   OpenID provider
   ```
       CompletableFuture<DecodedJWT> 
authenticateTokenAsync(AuthenticationDataSource authData) {
           String token;
           try {
               token = AuthenticationProviderToken.getToken(authData);
           } catch (AuthenticationException e) {
               
incrementFailureMetric(AuthenticationExceptionCode.ERROR_DECODING_JWT);
               return CompletableFuture.failedFuture(e);
           }
           return authenticateToken(token)
                   .whenComplete((jwt, e) -> {
                       if (jwt != null) {
                           
AuthenticationMetrics.authenticateSuccess(getClass().getSimpleName(), 
getAuthMethodName());
                       }
                       // Failure metrics are incremented within methods above
                   });
       }
   
   ```



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