github.com/brahmaroutu/docker@v1.2.1-0.20160809185609-eb28dde01f16/api/client/network/list.go (about)

     1  package network
     2  
     3  import (
     4  	"sort"
     5  
     6  	"golang.org/x/net/context"
     7  
     8  	"github.com/docker/docker/api/client"
     9  	"github.com/docker/docker/api/client/formatter"
    10  	"github.com/docker/docker/cli"
    11  	"github.com/docker/engine-api/types"
    12  	"github.com/docker/engine-api/types/filters"
    13  	"github.com/spf13/cobra"
    14  )
    15  
    16  type byNetworkName []types.NetworkResource
    17  
    18  func (r byNetworkName) Len() int           { return len(r) }
    19  func (r byNetworkName) Swap(i, j int)      { r[i], r[j] = r[j], r[i] }
    20  func (r byNetworkName) Less(i, j int) bool { return r[i].Name < r[j].Name }
    21  
    22  type listOptions struct {
    23  	quiet   bool
    24  	noTrunc bool
    25  	format  string
    26  	filter  []string
    27  }
    28  
    29  func newListCommand(dockerCli *client.DockerCli) *cobra.Command {
    30  	var opts listOptions
    31  
    32  	cmd := &cobra.Command{
    33  		Use:     "ls [OPTIONS]",
    34  		Aliases: []string{"list"},
    35  		Short:   "List networks",
    36  		Args:    cli.NoArgs,
    37  		RunE: func(cmd *cobra.Command, args []string) error {
    38  			return runList(dockerCli, opts)
    39  		},
    40  	}
    41  
    42  	flags := cmd.Flags()
    43  	flags.BoolVarP(&opts.quiet, "quiet", "q", false, "Only display volume names")
    44  	flags.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate the output")
    45  	flags.StringVar(&opts.format, "format", "", "Pretty-print networks using a Go template")
    46  	flags.StringSliceVarP(&opts.filter, "filter", "f", []string{}, "Provide filter values (i.e. 'dangling=true')")
    47  
    48  	return cmd
    49  }
    50  
    51  func runList(dockerCli *client.DockerCli, opts listOptions) error {
    52  	client := dockerCli.Client()
    53  
    54  	netFilterArgs := filters.NewArgs()
    55  	for _, f := range opts.filter {
    56  		var err error
    57  		netFilterArgs, err = filters.ParseFlag(f, netFilterArgs)
    58  		if err != nil {
    59  			return err
    60  		}
    61  	}
    62  
    63  	options := types.NetworkListOptions{
    64  		Filters: netFilterArgs,
    65  	}
    66  
    67  	networkResources, err := client.NetworkList(context.Background(), options)
    68  	if err != nil {
    69  		return err
    70  	}
    71  
    72  	f := opts.format
    73  	if len(f) == 0 {
    74  		if len(dockerCli.ConfigFile().NetworksFormat) > 0 && !opts.quiet {
    75  			f = dockerCli.ConfigFile().NetworksFormat
    76  		} else {
    77  			f = "table"
    78  		}
    79  	}
    80  
    81  	sort.Sort(byNetworkName(networkResources))
    82  
    83  	networksCtx := formatter.NetworkContext{
    84  		Context: formatter.Context{
    85  			Output: dockerCli.Out(),
    86  			Format: f,
    87  			Quiet:  opts.quiet,
    88  			Trunc:  !opts.noTrunc,
    89  		},
    90  		Networks: networkResources,
    91  	}
    92  
    93  	networksCtx.Write()
    94  
    95  	return nil
    96  }