DockerCLI/cli/command/container/pause.go

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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 pauseOptions struct {
containers []string
}
// NewPauseCommand creates a new cobra.Command for `docker pause`
func NewPauseCommand(dockerCli *command.DockerCli) *cobra.Command {
var opts pauseOptions
return &cobra.Command{
Use: "pause CONTAINER [CONTAINER...]",
Short: "Pause all processes within one or more containers",
Args: cli.RequiresMinArgs(1),
RunE: func(cmd *cobra.Command, args []string) error {
opts.containers = args
return runPause(dockerCli, &opts)
},
}
}
func runPause(dockerCli *command.DockerCli, opts *pauseOptions) error {
ctx := context.Background()
var errs []string
errChan := parallelOperation(ctx, opts.containers, dockerCli.Client().ContainerPause)
for _, container := range opts.containers {
if err := <-errChan; err != nil {
errs = append(errs, err.Error())
continue
}
fmt.Fprintln(dockerCli.Out(), container)
}
if len(errs) > 0 {
return errors.New(strings.Join(errs, "\n"))
}
return nil
}