github.com/kobeld/docker@v1.12.0-rc1/api/client/volume/list.go (about)

     1  package volume
     2  
     3  import (
     4  	"fmt"
     5  	"sort"
     6  	"text/tabwriter"
     7  
     8  	"golang.org/x/net/context"
     9  
    10  	"github.com/docker/docker/api/client"
    11  	"github.com/docker/docker/cli"
    12  	"github.com/docker/engine-api/types"
    13  	"github.com/docker/engine-api/types/filters"
    14  	"github.com/spf13/cobra"
    15  )
    16  
    17  type byVolumeName []*types.Volume
    18  
    19  func (r byVolumeName) Len() int      { return len(r) }
    20  func (r byVolumeName) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
    21  func (r byVolumeName) Less(i, j int) bool {
    22  	return r[i].Name < r[j].Name
    23  }
    24  
    25  type listOptions struct {
    26  	quiet  bool
    27  	filter []string
    28  }
    29  
    30  func newListCommand(dockerCli *client.DockerCli) *cobra.Command {
    31  	var opts listOptions
    32  
    33  	cmd := &cobra.Command{
    34  		Use:     "ls",
    35  		Aliases: []string{"list"},
    36  		Short:   "List volumes",
    37  		Args:    cli.NoArgs,
    38  		RunE: func(cmd *cobra.Command, args []string) error {
    39  			return runList(dockerCli, opts)
    40  		},
    41  	}
    42  
    43  	flags := cmd.Flags()
    44  	flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only display volume names")
    45  	flags.StringSliceVarP(&opts.filter, "filter", "f", []string{}, "Provide filter values (i.e. 'dangling=true')")
    46  
    47  	return cmd
    48  }
    49  
    50  func runList(dockerCli *client.DockerCli, opts listOptions) error {
    51  	client := dockerCli.Client()
    52  
    53  	volFilterArgs := filters.NewArgs()
    54  	for _, f := range opts.filter {
    55  		var err error
    56  		volFilterArgs, err = filters.ParseFlag(f, volFilterArgs)
    57  		if err != nil {
    58  			return err
    59  		}
    60  	}
    61  
    62  	volumes, err := client.VolumeList(context.Background(), volFilterArgs)
    63  	if err != nil {
    64  		return err
    65  	}
    66  
    67  	w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0)
    68  	if !opts.quiet {
    69  		for _, warn := range volumes.Warnings {
    70  			fmt.Fprintln(dockerCli.Err(), warn)
    71  		}
    72  		fmt.Fprintf(w, "DRIVER \tVOLUME NAME")
    73  		fmt.Fprintf(w, "\n")
    74  	}
    75  
    76  	sort.Sort(byVolumeName(volumes.Volumes))
    77  	for _, vol := range volumes.Volumes {
    78  		if opts.quiet {
    79  			fmt.Fprintln(w, vol.Name)
    80  			continue
    81  		}
    82  		fmt.Fprintf(w, "%s\t%s\n", vol.Driver, vol.Name)
    83  	}
    84  	w.Flush()
    85  	return nil
    86  }