feat(helm): Add --full-output to helm list and helm history

The default maximum length of the output table is 60 chars.
When the length is greater than 60, the content will be omitted.
This patch adds -f and --full-output to helm list and helm history
which can display full information of releases on the screen.

Closes #2828

cmd/helm/history.go

@@ -50,7 +50,7 @@ type historyCmd struct {
 	rls      string
 	out      io.Writer
 	helmc    helm.Interface
-	output string
+	colWidth uint
 }
 
 func newHistoryCmd(c helm.Interface, w io.Writer) *cobra.Command {
@@ -76,7 +76,7 @@ func newHistoryCmd(c helm.Interface, w io.Writer) *cobra.Command {
 
 	f := cmd.Flags()
 	f.Int32Var(&his.max, "max", 256, "maximum number of revision to include in history")
-	f.StringVar(&his.output, "output", "short", "specifies the output format: short|wide")
+	f.UintVar(&his.colWidth, "col-width", 60, "specifies the max column width of output")
 
 	return cmd
 }
@@ -90,19 +90,14 @@ func (cmd *historyCmd) run() error {
 		return nil
 	}
 
-	fmt.Fprintln(cmd.out, formatHistory(r.Releases, cmd.output))
+	fmt.Fprintln(cmd.out, formatHistory(r.Releases, cmd.colWidth))
 	return nil
 }
 
-func formatHistory(rls []*release.Release, output string) string {
+func formatHistory(rls []*release.Release, colWidth uint) string {
 	tbl := uitable.New()
-	switch output {
-	case "wide":
-		break
-	default:
-		tbl.MaxColWidth = 60
-	}
 
+	tbl.MaxColWidth = colWidth
 	tbl.AddRow("REVISION", "UPDATED", "STATUS", "CHART", "DESCRIPTION")
 	for i := len(rls) - 1; i >= 0; i-- {
 		r := rls[i]

cmd/helm/list.go

@@ -74,7 +74,7 @@ type listCmd struct {
 	superseded bool
 	pending    bool
 	client     helm.Interface
-	output     string
+	colWidth   uint
 }
 
 func newListCmd(client helm.Interface, out io.Writer) *cobra.Command {
@@ -113,7 +113,7 @@ func newListCmd(client helm.Interface, out io.Writer) *cobra.Command {
 	f.BoolVar(&list.failed, "failed", false, "show failed releases")
 	f.BoolVar(&list.pending, "pending", false, "show pending releases")
 	f.StringVar(&list.namespace, "namespace", "", "show releases within a specific namespace")
-	f.StringVar(&list.output, "output", "short", "specifies the output format: short|wide")
+	f.UintVar(&list.colWidth, "col-width", 60, "specifies the max column width of output")
 
 	// TODO: Do we want this as a feature of 'helm list'?
 	//f.BoolVar(&list.superseded, "history", true, "show historical releases")
@@ -164,7 +164,7 @@ func (l *listCmd) run() error {
 		}
 		return nil
 	}
-	fmt.Fprintln(l.out, formatList(rels, l.output))
+	fmt.Fprintln(l.out, formatList(rels, l.colWidth))
 	return nil
 }
 
@@ -209,15 +209,10 @@ func (l *listCmd) statusCodes() []release.Status_Code {
 	return status
 }
 
-func formatList(rels []*release.Release, output string) string {
+func formatList(rels []*release.Release, colWidth uint) string {
 	table := uitable.New()
-	switch output {
-	case "wide":
-		break
-	default:
-		table.MaxColWidth = 60
-	}
 
+	table.MaxColWidth = colWidth
 	table.AddRow("NAME", "REVISION", "UPDATED", "STATUS", "CHART", "NAMESPACE")
 	for _, r := range rels {
 		c := fmt.Sprintf("%s-%s", r.Chart.Metadata.Name, r.Chart.Metadata.Version)

docs/helm/helm_history.md

@@ -28,8 +28,8 @@ helm history [flags] RELEASE_NAME
 ### Options
 
 ```
+      --col-width uint       specifies the max column width of output (default 60)
       --max int32            maximum number of revision to include in history (default 256)
-      --output string        specifies the output format: short|wide (default "short")
       --tls                  enable TLS for request
       --tls-ca-cert string   path to TLS CA certificate file (default "$HELM_HOME/ca.pem")
       --tls-cert string      path to TLS certificate file (default "$HELM_HOME/cert.pem")

docs/helm/helm_list.md

@@ -40,6 +40,7 @@ helm list [flags] [FILTER]
 
 ```
   -a, --all                  show all releases, not just the ones marked DEPLOYED
+      --col-width uint       specifies the max column width of output (default 60)
   -d, --date                 sort by release date
       --deleted              show deleted releases
       --deleting             show releases that are currently being deleted
@@ -48,7 +49,6 @@ helm list [flags] [FILTER]
   -m, --max int              maximum number of releases to fetch (default 256)
       --namespace string     show releases within a specific namespace
   -o, --offset string        next release name in the list, used to offset from start value
-      --output string        specifies the output format: short|wide (default "short")
       --pending              show pending releases
   -r, --reverse              reverse the sort order
   -q, --short                output short (quiet) listing format