Check if initialized for ReferenceBean (#12723)

* Check if initialized for ReferenceBean

* fix name

dubbo-config/dubbo-config-api/src/main/java/org/apache/dubbo/config/ReferenceConfig.java

@@ -57,12 +57,12 @@
 import java.beans.Transient;
 import java.util.ArrayList;
 import java.util.Arrays;
-import java.util.TreeSet;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
 import java.util.Optional;
 import java.util.Set;
+import java.util.TreeSet;
 
 import static org.apache.dubbo.common.constants.CommonConstants.ANY_VALUE;
 import static org.apache.dubbo.common.constants.CommonConstants.CLUSTER_KEY;
@@ -796,6 +796,17 @@ private void postProcessConfig() {
         configPostProcessors.forEach(component -> component.postProcessReferConfig(this));
     }
 
+    /**
+     * Return if ReferenceConfig has been initialized
+     * Note: Cannot use `isInitilized` as it may be treated as a Java Bean property
+     *
+     * @return initialized
+     */
+    @Transient
+    public boolean configInitialized() {
+        return initialized;
+    }
+
     /**
      * just for test
      *

dubbo-config/dubbo-config-spring/src/main/java/org/apache/dubbo/config/spring/ReferenceBean.java

@@ -393,6 +393,9 @@ private Object getCallProxy() throws Exception {
         //Subclasses should synchronize on the given Object if they perform any sort of extended singleton creation phase.
         // In particular, subclasses should not have their own mutexes involved in singleton creation, to avoid the potential for deadlocks in lazy-init situations.
         //The redundant type cast is to be compatible with earlier than spring-4.2
+        if (referenceConfig.configInitialized()) {
+            return referenceConfig.get();
+        }
         synchronized (((DefaultSingletonBeanRegistry)getBeanFactory()).getSingletonMutex()) {
             return referenceConfig.get();
         }