DockerCLI/command/checkpoint/list.go

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package checkpoint
import (
"fmt"
"text/tabwriter"
"golang.org/x/net/context"
"github.com/docker/docker/api/types"
"github.com/docker/docker/cli"
"github.com/docker/docker/cli/command"
"github.com/spf13/cobra"
)
type listOptions struct {
checkpointDir string
}
func newListCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts listOptions
cmd := &cobra.Command{
Use: "ls CONTAINER",
Aliases: []string{"list"},
Short: "List checkpoints for a container",
Args: cli.ExactArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
return runList(dockerCli, args[0], opts)
},
}
flags := cmd.Flags()
flags.StringVarP(&opts.checkpointDir, "checkpoint-dir", "", "", "use a custom checkpoint storage directory")
return cmd
}
func runList(dockerCli *command.DockerCli, container string, opts listOptions) error {
client := dockerCli.Client()
listOpts := types.CheckpointListOptions{
CheckpointDir: opts.checkpointDir,
}
checkpoints, err := client.CheckpointList(context.Background(), container, listOpts)
if err != nil {
return err
}
w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0)
fmt.Fprintf(w, "CHECKPOINT NAME")
fmt.Fprintf(w, "\n")
for _, checkpoint := range checkpoints {
fmt.Fprintf(w, "%s\t", checkpoint.Name)
fmt.Fprint(w, "\n")
}
w.Flush()
return nil
}