Fail on failed chart repository update

cmd/helm/repo_update.go

@@ -40,7 +40,7 @@ future releases.
 var errNoRepositories = errors.New("no repositories found. You must add one before updating")
 
 type repoUpdateCmd struct {
-	update func([]*repo.ChartRepository, io.Writer, helmpath.Home)
+	update func([]*repo.ChartRepository, io.Writer, helmpath.Home) error
 	home   helmpath.Home
 	out    io.Writer
 }
@@ -80,14 +80,15 @@ func (u *repoUpdateCmd) run() error {
 		}
 		repos = append(repos, r)
 	}
-
-	u.update(repos, u.out, u.home)
-	return nil
+	return u.update(repos, u.out, u.home)
 }
 
-func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Home) {
+func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Home) error {
 	fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...")
-	var wg sync.WaitGroup
+	var (
+		errorCounter int
+		wg           sync.WaitGroup
+	)
 	for _, re := range repos {
 		wg.Add(1)
 		go func(re *repo.ChartRepository) {
@@ -98,6 +99,7 @@ func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Ho
 			}
 			err := re.DownloadIndexFile(home.Cache())
 			if err != nil {
+				errorCounter++
 				fmt.Fprintf(out, "...Unable to get an update from the %q chart repository (%s):\n\t%s\n", re.Config.Name, re.Config.URL, err)
 			} else {
 				fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", re.Config.Name)
@@ -105,5 +107,9 @@ func updateCharts(repos []*repo.ChartRepository, out io.Writer, home helmpath.Ho
 		}(re)
 	}
 	wg.Wait()
+	if errorCounter != 0 {
+		return errors.New("Update Failed. Check log for details")
+	}
 	fmt.Fprintln(out, "Update Complete. ⎈ Happy Helming!⎈ ")
+	return nil
 }

pkg/downloader/manager.go

@@ -445,7 +445,10 @@ func (m *Manager) UpdateRepositories() error {
 func (m *Manager) parallelRepoUpdate(repos []*repo.Entry) error {
 	out := m.Out
 	fmt.Fprintln(out, "Hang tight while we grab the latest from your chart repositories...")
-	var wg sync.WaitGroup
+	var (
+		errorCounter int
+		wg           sync.WaitGroup
+	)
 	for _, c := range repos {
 		r, err := repo.NewChartRepository(c, m.Getters)
 		if err != nil {
@@ -454,6 +457,7 @@ func (m *Manager) parallelRepoUpdate(repos []*repo.Entry) error {
 		wg.Add(1)
 		go func(r *repo.ChartRepository) {
 			if err := r.DownloadIndexFile(m.HelmHome.Cache()); err != nil {
+				errorCounter++
 				fmt.Fprintf(out, "...Unable to get an update from the %q chart repository (%s):\n\t%s\n", r.Config.Name, r.Config.URL, err)
 			} else {
 				fmt.Fprintf(out, "...Successfully got an update from the %q chart repository\n", r.Config.Name)
@@ -462,6 +466,9 @@ func (m *Manager) parallelRepoUpdate(repos []*repo.Entry) error {
 		}(r)
 	}
 	wg.Wait()
+	if errorCounter != 0 {
+		return errors.New("Update Failed. Check log for details")
+	}
 	fmt.Fprintln(out, "Update Complete. ⎈Happy Helming!⎈")
 	return nil
 }