[Dubbo-3669] Only parse rules on init, does not override. (#3685)

Author: chickenlj

dubbo-registry/dubbo-registry-api/src/main/java/org/apache/dubbo/registry/integration/AbstractConfiguratorListener.java

@@ -44,7 +44,7 @@ protected final void initWith(String key) {
         dynamicConfiguration.addListener(key, this);
         String rawConfig = dynamicConfiguration.getConfig(key, CommonConstants.DUBBO);
         if (!StringUtils.isEmpty(rawConfig)) {
-            process(new ConfigChangeEvent(key, rawConfig));
+            genConfiguratorsFromRawRule(rawConfig);
         }
     }
 
@@ -58,20 +58,28 @@ public void process(ConfigChangeEvent event) {
         if (event.getChangeType().equals(ConfigChangeType.DELETED)) {
             configurators.clear();
         } else {
-            try {
-                // parseConfigurators will recognize app/service config automatically.
-                configurators = Configurator.toConfigurators(ConfigParser.parseConfigurators(event.getValue()))
-                        .orElse(configurators);
-            } catch (Exception e) {
-                logger.error("Failed to parse raw dynamic config and it will not take effect, the raw config is: " +
-                        event.getValue(), e);
+            if (!genConfiguratorsFromRawRule(event.getValue())) {
                 return;
             }
         }
 
         notifyOverrides();
     }
 
+    private boolean genConfiguratorsFromRawRule(String rawConfig) {
+        boolean parseSuccess = true;
+        try {
+            // parseConfigurators will recognize app/service config automatically.
+            configurators = Configurator.toConfigurators(ConfigParser.parseConfigurators(rawConfig))
+                    .orElse(configurators);
+        } catch (Exception e) {
+            logger.error("Failed to parse raw dynamic config and it will not take effect, the raw config is: " +
+                    rawConfig, e);
+            parseSuccess = false;
+        }
+        return parseSuccess;
+    }
+
     protected abstract void notifyOverrides();
 
     public List<Configurator> getConfigurators() {