fix stuck loading in some scenerios for ls-* command line options

src/config/config.go

@@ -249,7 +249,7 @@ func (cfg *Config) loadProviders(providers *M.ProxyProviders) (res E.NestedError
 	for name, dockerHost := range providers.Docker {
 		p, err := PR.NewDockerProvider(name, dockerHost)
 		if err != nil {
-			b.Add(err.Subject(dockerHost))
+			b.Add(err.Subjectf("%s (%s)", name, dockerHost))
 			continue
 		}
 		cfg.proxyProviders.Store(p.GetName(), p)

src/main.go

@@ -80,8 +80,6 @@ func main() {
 		return
 	}
 
-	cfg.StartProxyProviders()
-
 	if args.Command == common.CommandListRoutes {
 		printJSON(cfg.RoutesByAlias())
 		return
@@ -92,6 +90,8 @@ func main() {
 		return
 	}
 
+	cfg.StartProxyProviders()
+
 	if err.HasError() {
 		l.Warn(err)
 	}
@@ -177,10 +177,11 @@ func main() {
 		close(done)
 	}()
 
+	timeout := time.After(time.Duration(cfg.Value().TimeoutShutdown) * time.Second)
 	select {
 	case <-done:
 		logrus.Info("shutdown complete")
-	case <-time.After(time.Duration(cfg.Value().TimeoutShutdown) * time.Second):
+	case <-timeout:
 		logrus.Info("timeout waiting for shutdown")
 	}
 }

src/proxy/provider/provider.go

@@ -143,10 +143,13 @@ func (p *Provider) GetRoute(alias string) (R.Route, bool) {
 }
 
 func (p *Provider) LoadRoutes() E.NestedError {
-	routes, err := p.LoadRoutesImpl()
-	p.routes = routes
-	p.l.Infof("loaded %d routes", routes.Size())
-	return err
+	var err E.NestedError
+	p.routes, err = p.LoadRoutesImpl()
+	if p.routes.Size() > 0 {
+		p.l.Infof("loaded %d routes", p.routes.Size())
+		return err
+	}
+	return E.FailWith("loading routes", err)
 }
 
 func (p *Provider) watchEvents() {

src/watcher/docker_watcher.go

@@ -72,9 +72,9 @@ func (w DockerWatcher) EventsWithOptions(ctx context.Context, options DockerList
 
 		if !w.client.Connected() {
 			var err E.NestedError
+			attempts := 0
 			for {
 				w.client, err = D.ConnectClient(w.host)
-				attempts := 0
 				if err != nil {
 					break
 				}