DockerCLI/command/volume/list.go

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package volume
import (
"sort"
"golang.org/x/net/context"
"github.com/docker/docker/api/types"
"github.com/docker/docker/cli"
"github.com/docker/docker/cli/command"
"github.com/docker/docker/cli/command/formatter"
"github.com/docker/docker/opts"
"github.com/spf13/cobra"
)
type byVolumeName []*types.Volume
func (r byVolumeName) Len() int { return len(r) }
func (r byVolumeName) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
func (r byVolumeName) Less(i, j int) bool {
return r[i].Name < r[j].Name
}
type listOptions struct {
quiet bool
format string
filter opts.FilterOpt
}
func newListCommand(dockerCli *command.DockerCli) *cobra.Command {
opts := listOptions{filter: opts.NewFilterOpt()}
cmd := &cobra.Command{
Use: "ls [OPTIONS]",
Aliases: []string{"list"},
Short: "List volumes",
Long: listDescription,
Args: cli.NoArgs,
RunE: func(cmd *cobra.Command, args []string) error {
return runList(dockerCli, opts)
},
}
flags := cmd.Flags()
flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only display volume names")
flags.StringVar(&opts.format, "format", "", "Pretty-print volumes using a Go template")
flags.VarP(&opts.filter, "filter", "f", "Provide filter values (e.g. 'dangling=true')")
return cmd
}
func runList(dockerCli *command.DockerCli, opts listOptions) error {
client := dockerCli.Client()
volumes, err := client.VolumeList(context.Background(), opts.filter.Value())
if err != nil {
return err
}
f := opts.format
if len(f) == 0 {
if len(dockerCli.ConfigFile().VolumesFormat) > 0 && !opts.quiet {
f = dockerCli.ConfigFile().VolumesFormat
} else {
f = "table"
}
}
sort.Sort(byVolumeName(volumes.Volumes))
volumeCtx := formatter.VolumeContext{
Context: formatter.Context{
Output: dockerCli.Out(),
Format: f,
Quiet: opts.quiet,
},
Volumes: volumes.Volumes,
}
volumeCtx.Write()
return nil
}
var listDescription = `
Lists all the volumes Docker knows about. You can filter using the **-f** or
**--filter** flag. The filtering format is a **key=value** pair. To specify
more than one filter, pass multiple flags (for example,
**--filter "foo=bar" --filter "bif=baz"**)
The currently supported filters are:
* **dangling** (boolean - **true** or **false**, **1** or **0**)
* **driver** (a volume driver's name)
* **label** (**label=<key>** or **label=<key>=<value>**)
* **name** (a volume's name)
`