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moby--moby/api/client/network/list.go
Sebastiaan van Stijn 4f0b510552
Don't automagically add "[OPTIONS]" to usage
This removes the logic to automatically
add [OPTIONS] to the usage output.

The current logic was broken if a command
only has deprecated or hidden flags, and
in many cases put the [OPTIONS] in the
wrong location.

Requiring the usage string to be set
manually gives more predictable results,
and shouldn't require much to maintain.

Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
2016-07-19 00:07:19 +02:00

100 lines
2.3 KiB
Go

package network
import (
"fmt"
"sort"
"text/tabwriter"
"golang.org/x/net/context"
"github.com/docker/docker/api/client"
"github.com/docker/docker/cli"
"github.com/docker/docker/pkg/stringid"
"github.com/docker/engine-api/types"
"github.com/docker/engine-api/types/filters"
"github.com/spf13/cobra"
)
type byNetworkName []types.NetworkResource
func (r byNetworkName) Len() int { return len(r) }
func (r byNetworkName) Swap(i, j int) { r[i], r[j] = r[j], r[i] }
func (r byNetworkName) Less(i, j int) bool { return r[i].Name < r[j].Name }
type listOptions struct {
quiet bool
noTrunc bool
filter []string
}
func newListCommand(dockerCli *client.DockerCli) *cobra.Command {
var opts listOptions
cmd := &cobra.Command{
Use: "ls [OPTIONS]",
Aliases: []string{"list"},
Short: "List networks",
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.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate the output")
flags.StringSliceVarP(&opts.filter, "filter", "f", []string{}, "Provide filter values (i.e. 'dangling=true')")
return cmd
}
func runList(dockerCli *client.DockerCli, opts listOptions) error {
client := dockerCli.Client()
netFilterArgs := filters.NewArgs()
for _, f := range opts.filter {
var err error
netFilterArgs, err = filters.ParseFlag(f, netFilterArgs)
if err != nil {
return err
}
}
options := types.NetworkListOptions{
Filters: netFilterArgs,
}
networkResources, err := client.NetworkList(context.Background(), options)
if err != nil {
return err
}
w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0)
if !opts.quiet {
fmt.Fprintf(w, "NETWORK ID\tNAME\tDRIVER\tSCOPE")
fmt.Fprintf(w, "\n")
}
sort.Sort(byNetworkName(networkResources))
for _, networkResource := range networkResources {
ID := networkResource.ID
netName := networkResource.Name
driver := networkResource.Driver
scope := networkResource.Scope
if !opts.noTrunc {
ID = stringid.TruncateID(ID)
}
if opts.quiet {
fmt.Fprintln(w, ID)
continue
}
fmt.Fprintf(w, "%s\t%s\t%s\t%s\t",
ID,
netName,
driver,
scope)
fmt.Fprint(w, "\n")
}
w.Flush()
return nil
}