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rename.go
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/
rename.go
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package container
import (
"fmt"
"strings"
"golang.org/x/net/context"
"github.com/docker/docker/api/client"
"github.com/docker/docker/cli"
"github.com/spf13/cobra"
)
type renameOptions struct {
oldName string
newName string
}
// NewRenameCommand creats a new cobra.Command for `docker rename`
func NewRenameCommand(dockerCli *client.DockerCli) *cobra.Command {
var opts renameOptions
cmd := &cobra.Command{
Use: "rename CONTAINER NEW_NAME",
Short: "Rename a container",
Args: cli.ExactArgs(2),
RunE: func(cmd *cobra.Command, args []string) error {
opts.oldName = args[0]
opts.newName = args[1]
return runRename(dockerCli, &opts)
},
}
return cmd
}
func runRename(dockerCli *client.DockerCli, opts *renameOptions) error {
ctx := context.Background()
oldName := strings.TrimSpace(opts.oldName)
newName := strings.TrimSpace(opts.newName)
if oldName == "" || newName == "" {
return fmt.Errorf("Error: Neither old nor new names may be empty")
}
if err := dockerCli.Client().ContainerRename(ctx, oldName, newName); err != nil {
fmt.Fprintf(dockerCli.Err(), "%s\n", err)
return fmt.Errorf("Error: failed to rename container named %s", oldName)
}
return nil
}