protected override async Task DoSubscribe(ServiceConfig config, Action <IList <ServiceConfig> > onChange) { var path = $"/dubbo/{config.ServiceName}/providers"; await CreatePath(path, true); var childs = await client.SubscribeChildrenChange(path, ((zk, args) => { var configs = args.CurrentChildrens.Select(child => ServiceConfig.ParseServiceUrl(HttpUtility.UrlDecode(child, Encoding.UTF8))).ToArray(); onChange(configs); return(Task.CompletedTask); })); onChange(childs.Select(child => ServiceConfig.ParseServiceUrl(HttpUtility.UrlDecode(child, Encoding.UTF8))) .ToArray()); Log.InfoFormat("subscribe {0} success.", path); }