DockerCLI/cli/command/network/list.go

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package network
import (
"context"
"sort"
"github.com/docker/cli/cli"
"github.com/docker/cli/cli/command"
"github.com/docker/cli/cli/command/formatter"
"github.com/docker/cli/opts"
"github.com/docker/docker/api/types"
"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
format string
filter opts.FilterOpt
}
func newListCommand(dockerCli command.Cli) *cobra.Command {
options := listOptions{filter: opts.NewFilterOpt()}
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, options)
},
}
flags := cmd.Flags()
flags.BoolVarP(&options.quiet, "quiet", "q", false, "Only display network IDs")
flags.BoolVar(&options.noTrunc, "no-trunc", false, "Do not truncate the output")
flags.StringVar(&options.format, "format", "", "Pretty-print networks using a Go template")
flags.VarP(&options.filter, "filter", "f", "Provide filter values (e.g. 'driver=bridge')")
return cmd
}
func runList(dockerCli command.Cli, options listOptions) error {
client := dockerCli.Client()
listOptions := types.NetworkListOptions{Filters: options.filter.Value()}
networkResources, err := client.NetworkList(context.Background(), listOptions)
if err != nil {
return err
}
format := options.format
if len(format) == 0 {
if len(dockerCli.ConfigFile().NetworksFormat) > 0 && !options.quiet {
format = dockerCli.ConfigFile().NetworksFormat
} else {
format = formatter.TableFormatKey
}
}
sort.Sort(byNetworkName(networkResources))
networksCtx := formatter.Context{
Output: dockerCli.Out(),
Format: formatter.NewNetworkFormat(format, options.quiet),
Trunc: !options.noTrunc,
}
return formatter.NetworkWrite(networksCtx, networkResources)
}