Add backup & schedule describers

Signed-off-by: Andy Goldstein <andy.goldstein@gmail.com>

pkg/cmd/cli/backup/backup.go

@@ -33,11 +33,9 @@ func NewCommand(f client.Factory) *cobra.Command {
 		NewCreateCommand(f, "create"),
 		NewGetCommand(f, "get"),
 		NewLogsCommand(f),
+		NewDescribeCommand(f, "describe"),
 		NewDownloadCommand(f),
 
-		// Will implement describe later
-		// NewDescribeCommand(f),
-
 		// If you delete a backup and it still exists in object storage, the backup sync controller will
 		// recreate it. Until we have a good UX around this, we're disabling the delete command.
 		// NewDeleteCommand(f),

pkg/cmd/cli/backup/describe.go

@@ -17,18 +17,55 @@ limitations under the License.
 package backup
 
 import (
-	"github.com/spf13/cobra"
+	"fmt"
 
+	"github.com/spf13/cobra"
+	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
+
+	"github.com/heptio/ark/pkg/apis/ark/v1"
 	"github.com/heptio/ark/pkg/client"
+	"github.com/heptio/ark/pkg/cmd"
+	"github.com/heptio/ark/pkg/cmd/util/output"
 )
 
-func NewDescribeCommand(f client.Factory) *cobra.Command {
+func NewDescribeCommand(f client.Factory, use string) *cobra.Command {
+	var listOptions metav1.ListOptions
+
 	c := &cobra.Command{
-		Use:   "describe",
-		Short: "Describe a backup",
+		Use:   use + " [NAME1] [NAME2] [NAME...]",
+		Short: "Describe backups",
 		Run: func(c *cobra.Command, args []string) {
+			arkClient, err := f.Client()
+			cmd.CheckError(err)
+
+			var backups *v1.BackupList
+			if len(args) > 0 {
+				backups = new(v1.BackupList)
+				for _, name := range args {
+					backup, err := arkClient.Ark().Backups(v1.DefaultNamespace).Get(name, metav1.GetOptions{})
+					cmd.CheckError(err)
+					backups.Items = append(backups.Items, *backup)
+				}
+			} else {
+				backups, err = arkClient.ArkV1().Backups(v1.DefaultNamespace).List(listOptions)
+				cmd.CheckError(err)
+			}
+
+			first := true
+			for _, backup := range backups.Items {
+				s := output.DescribeBackup(&backup)
+				if first {
+					first = false
+					fmt.Print(s)
+				} else {
+					fmt.Printf("\n\n%s", s)
+				}
+			}
+			cmd.CheckError(err)
 		},
 	}
 
+	c.Flags().StringVarP(&listOptions.LabelSelector, "selector", "l", listOptions.LabelSelector, "only show items matching this label selector")
+
 	return c
 }