poorbarcode commented on code in PR #16165:
URL: https://github.com/apache/pulsar/pull/16165#discussion_r931124287


##########
pulsar-client/src/main/java/org/apache/pulsar/client/impl/ClientCnx.java:
##########
@@ -1265,4 +1278,165 @@ private void checkRequestTimeout() {
     }
 
     private static final Logger log = LoggerFactory.getLogger(ClientCnx.class);
+
+    /**
+     * Check client connection is now free. This method may change the state 
to idle.
+     * This method will not change the state to idle.
+     * @return true if the connection is eligible.
+     */
+    public boolean idleCheck(){
+        if (pendingRequests != null && !pendingRequests.isEmpty()){
+            return false;
+        }
+        if (waitingLookupRequests != null  && 
!waitingLookupRequests.isEmpty()){
+            return false;
+        }
+        if (!consumers.isEmpty()){
+            return false;
+        }
+        if (!producers.isEmpty()){
+            return false;
+        }
+        if (!transactionMetaStoreHandlers.isEmpty()){
+            return false;
+        }
+        return true;
+    }
+    /**

Review Comment:
   Already fixed, extract `ClientCnxIdleStateManager` to make `ClientCnx` more 
simple, you can review this in `ClientCnxIdleStateManager`.



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