github.com/olljanat/moby@v1.13.1/cli/command/swarm/unlock.go (about)

     1  package swarm
     2  
     3  import (
     4  	"bufio"
     5  	"fmt"
     6  	"io"
     7  	"strings"
     8  
     9  	"github.com/spf13/cobra"
    10  	"golang.org/x/crypto/ssh/terminal"
    11  
    12  	"github.com/docker/docker/api/types/swarm"
    13  	"github.com/docker/docker/cli"
    14  	"github.com/docker/docker/cli/command"
    15  	"golang.org/x/net/context"
    16  )
    17  
    18  func newUnlockCommand(dockerCli *command.DockerCli) *cobra.Command {
    19  	cmd := &cobra.Command{
    20  		Use:   "unlock",
    21  		Short: "Unlock swarm",
    22  		Args:  cli.ExactArgs(0),
    23  		RunE: func(cmd *cobra.Command, args []string) error {
    24  			client := dockerCli.Client()
    25  			ctx := context.Background()
    26  
    27  			key, err := readKey(dockerCli.In(), "Please enter unlock key: ")
    28  			if err != nil {
    29  				return err
    30  			}
    31  			req := swarm.UnlockRequest{
    32  				UnlockKey: key,
    33  			}
    34  
    35  			return client.SwarmUnlock(ctx, req)
    36  		},
    37  	}
    38  
    39  	return cmd
    40  }
    41  
    42  func readKey(in *command.InStream, prompt string) (string, error) {
    43  	if in.IsTerminal() {
    44  		fmt.Print(prompt)
    45  		dt, err := terminal.ReadPassword(int(in.FD()))
    46  		fmt.Println()
    47  		return string(dt), err
    48  	}
    49  	key, err := bufio.NewReader(in).ReadString('\n')
    50  	if err == io.EOF {
    51  		err = nil
    52  	}
    53  	return strings.TrimSpace(key), err
    54  }