ywxzm03 commented on code in PR #3612:
URL: https://github.com/apache/dubbo-go/pull/3612#discussion_r3864115449


##########
config_center/zookeeper/impl.go:
##########
@@ -134,23 +163,85 @@ func (c *zookeeperDynamicConfiguration) GetProperties(key 
string, opts ...config
        } else {
                key = c.GetURL().GetParam(constant.ConfigNamespaceKey, 
config_center.DefaultGroup) + "/" + key
        }
-       content, _, err := c.client.GetContent(c.rootPath + "/" + key)
-       if errors.Is(err, zk.ErrNoNode) {
-               logger.Warnf("[ConfigCenter][Zookeeper] query rule fail, key=%s 
err=%v", key, err)
-               return "", nil
-       }
-       if err != nil {
-               return "", perrors.WithStack(err)
+       return buildPath(c.rootPath, key)
+}
+
+func (c *zookeeperDynamicConfiguration) loadProperties(path string, 
registerWatch bool) (configCacheEntry, watchRegistration, error) {
+       if !c.cache.enabled() || !registerWatch {
+               beforeSessionID := c.client.Conn.SessionID()
+               content, _, err := c.client.GetContent(path)
+               afterSessionID := c.client.Conn.SessionID()
+               registration := watchRegistration{
+                       beforeSessionID: beforeSessionID,
+                       afterSessionID:  afterSessionID,
+               }
+               if errors.Is(err, zk.ErrNoNode) {
+                       logger.Warnf("[ConfigCenter][Zookeeper] query rule 
fail, key=%s err=%v", path, err)
+                       return configCacheEntry{exists: false}, registration, 
nil
+               }
+               if err != nil {
+                       return configCacheEntry{}, registration, 
perrors.WithStack(err)
+               }
+               return configCacheEntry{content: string(content), exists: 
true}, registration, nil
        }
-       if !c.base64Enabled {
-               return string(content), nil
+
+       for {
+               beforeSessionID := c.client.Conn.SessionID()
+               content, _, events, err := c.client.Conn.GetW(path)
+               registration := watchRegistration{
+                       events:          events,
+                       beforeSessionID: beforeSessionID,
+                       afterSessionID:  c.client.Conn.SessionID(),
+               }
+               if err == nil {
+                       return configCacheEntry{content: string(content), 
exists: true}, registration, nil
+               }
+               if !errors.Is(err, zk.ErrNoNode) {
+                       return configCacheEntry{}, watchRegistration{}, 
perrors.WithStack(err)
+               }
+
+               beforeSessionID = c.client.Conn.SessionID()
+               exists, _, events, watchErr := c.client.Conn.ExistsW(path)
+               registration = watchRegistration{
+                       events:          events,
+                       beforeSessionID: beforeSessionID,
+                       afterSessionID:  c.client.Conn.SessionID(),
+               }
+               if watchErr != nil {
+                       return configCacheEntry{}, watchRegistration{}, 
perrors.WithStack(watchErr)
+               }
+               if !exists {
+                       logger.Warnf("[ConfigCenter][Zookeeper] query rule 
fail, key=%s err=%v", path, err)
+                       return configCacheEntry{exists: false}, registration, 
nil
+               }
+
+               readBeforeSessionID := c.client.Conn.SessionID()
+               content, _, getErr := c.client.Conn.Get(path)
+               readAfterSessionID := c.client.Conn.SessionID()
+               registration.readBeforeSessionID = readBeforeSessionID
+               registration.readAfterSessionID = readAfterSessionID
+               if errors.Is(getErr, zk.ErrNoNode) {
+                       continue
+               }
+               if getErr != nil {
+                       return configCacheEntry{}, registration, 
perrors.WithStack(getErr)
+               }
+               return configCacheEntry{content: string(content), exists: 
true}, registration, nil
        }
+}
 
-       decoded, err := base64.StdEncoding.DecodeString(string(content))
+func parseConfigCacheTTL(value string) (time.Duration, error) {
+       if value == "" {

Review Comment:
   fixed



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