fix(helm): change 'helm update' to 'helm repo update'

The old form is marked deprecated.

Relates to #1196

cmd/helm/helm.go

@@ -83,6 +83,9 @@ func newRootCmd(out io.Writer) *cobra.Command {
 	p.StringVar(&tillerHost, "host", thost, "address of tiller. Overrides $HELM_HOST.")
 	p.BoolVarP(&flagDebug, "debug", "", false, "enable verbose output")
 
+	rup := newRepoUpdateCmd(out)
+	rup.Deprecated = "use 'helm repo update'\n"
+
 	cmd.AddCommand(
 		newCreateCmd(out),
 		newDeleteCmd(nil, out),
@@ -101,10 +104,11 @@ func newRootCmd(out io.Writer) *cobra.Command {
 		newSearchCmd(out),
 		newServeCmd(out),
 		newStatusCmd(nil, out),
-		newUpdateCmd(out),
 		newUpgradeCmd(nil, out),
 		newVerifyCmd(out),
 		newVersionCmd(nil, out),
+		// Deprecated
+		rup,
 	)
 	return cmd
 }

cmd/helm/repo.go

@@ -36,8 +36,8 @@ type repoCmd struct {
 
 func newRepoCmd(out io.Writer) *cobra.Command {
 	cmd := &cobra.Command{
-		Use:   "repo [FLAGS] add|remove|list|index [ARGS]",
-		Short: "add, list, remove, index chart repositories",
+		Use:   "repo [FLAGS] add|remove|list|index|update [ARGS]",
+		Short: "add, list, remove, update, and index chart repositories",
 		Long:  repoHelm,
 	}
 
@@ -45,6 +45,7 @@ func newRepoCmd(out io.Writer) *cobra.Command {
 	cmd.AddCommand(newRepoListCmd(out))
 	cmd.AddCommand(newRepoRemoveCmd(out))
 	cmd.AddCommand(newRepoIndexCmd(out))
+	cmd.AddCommand(newRepoUpdateCmd(out))
 
 	return cmd
 }

cmd/helm/update.go → cmd/helm/repo_update.go

@@ -30,16 +30,19 @@ import (
 const updateDesc = `
 Update gets the latest information about charts from the respective chart repositories.
 Information is cached locally, where it is used by commands like 'helm search'.
+
+'helm update' is the deprecated form of 'helm repo update'. It will be removed in
+future releases.
 `
 
-type updateCmd struct {
+type repoUpdateCmd struct {
 	repoFile string
 	update   func(map[string]string, bool, io.Writer)
 	out      io.Writer
 }
 
-func newUpdateCmd(out io.Writer) *cobra.Command {
-	u := &updateCmd{
+func newRepoUpdateCmd(out io.Writer) *cobra.Command {
+	u := &repoUpdateCmd{
 		out:      out,
 		update:   updateCharts,
 		repoFile: repositoriesFile(),
@@ -56,7 +59,7 @@ func newUpdateCmd(out io.Writer) *cobra.Command {
 	return cmd
 }
 
-func (u *updateCmd) run() error {
+func (u *repoUpdateCmd) run() error {
 	f, err := repo.LoadRepositoriesFile(u.repoFile)
 	if err != nil {
 		return err

cmd/helm/update_test.go → cmd/helm/repo_update_test.go

@@ -34,7 +34,7 @@ func TestUpdateCmd(t *testing.T) {
 			fmt.Fprintln(out, name)
 		}
 	}
-	uc := &updateCmd{
+	uc := &repoUpdateCmd{
 		out:      out,
 		update:   updater,
 		repoFile: "testdata/repositories.yaml",

docs/chart_repository.md

@@ -129,9 +129,9 @@ fantastic-charts    https://storage.googleapis.com/fantastic-charts
 
 *Note: A repository will not be added if it does not contain a valid index.yaml.*
 
-After that, they'll be able to search through your charts. After you've updated the repository, they can use the `helm update` command to get the latest chart information.
+After that, they'll be able to search through your charts. After you've updated the repository, they can use the `helm repo update` command to get the latest chart information.
 
-*Under the hood, the `helm repo add` and `helm update` commands are fetching the index.yaml file and storing them in the `$HELM_HOME/repository/cache/` directory. This is where the `helm search` function finds information about charts.*
+*Under the hood, the `helm repo add` and `helm repo update` commands are fetching the index.yaml file and storing them in the `$HELM_HOME/repository/cache/` directory. This is where the `helm search` function finds information about charts.*
 
 ## Contributing charts to the official helm chart repository
 *Coming Soon*

docs/using_helm.md

@@ -338,7 +338,7 @@ $ helm repo add dev https://example.com/dev-charts
 ```
 
 Because chart repositories change frequently, at any point you can make
-sure your Helm client is up to date by running `helm update`.
+sure your Helm client is up to date by running `helm repo update`.
 
 ## Creating Your Own Charts