package container import ( "fmt" "strings" "github.com/docker/cli/cli" "github.com/docker/cli/cli/command" "github.com/pkg/errors" "github.com/spf13/cobra" "golang.org/x/net/context" ) type waitOptions struct { containers []string } // NewWaitCommand creates a new cobra.Command for `docker wait` func NewWaitCommand(dockerCli *command.DockerCli) *cobra.Command { var opts waitOptions cmd := &cobra.Command{ Use: "wait CONTAINER [CONTAINER...]", Short: "Block until one or more containers stop, then print their exit codes", Args: cli.RequiresMinArgs(1), RunE: func(cmd *cobra.Command, args []string) error { opts.containers = args return runWait(dockerCli, &opts) }, } return cmd } func runWait(dockerCli *command.DockerCli, opts *waitOptions) error { ctx := context.Background() var errs []string for _, container := range opts.containers { resultC, errC := dockerCli.Client().ContainerWait(ctx, container, "") select { case result := <-resultC: fmt.Fprintf(dockerCli.Out(), "%d\n", result.StatusCode) case err := <-errC: errs = append(errs, err.Error()) } } if len(errs) > 0 { return errors.New(strings.Join(errs, "\n")) } return nil }