feat 默认模块

discover/listener.go

@@ -41,7 +41,7 @@ func onCBByType(t common.ListenerType, data any) {
 	}
 }
 
-func Listen() {
+func Listen(ready *sync.WaitGroup) {
 	var stopCtx context.Context
 	stopCtx, stopFunc = context.WithCancel(context.Background())
 	wg.Add(1)
@@ -60,6 +60,8 @@ func Listen() {
 			onInstanceChange(clientv3.EventTypePut, string(kv.Key), string(kv.Value), nil)
 		}
 		chInstance := etcd.GetClient().Watch(common.KeyDiscoverScene, clientv3.WithPrefix(), clientv3.WithRev(instanceAll.Header.Revision+1), clientv3.WithPrevKV())
+		// 准备好了
+		ready.Done()
 		for {
 			select {
 			case msg := <-chService: