github.com/portworx/docker@v1.12.1/api/client/network/list.go (about)

     1  package network
     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/docker/pkg/stringid"
    13  	"github.com/docker/engine-api/types"
    14  	"github.com/docker/engine-api/types/filters"
    15  	"github.com/spf13/cobra"
    16  )
    17  
    18  type byNetworkName []types.NetworkResource
    19  
    20  func (r byNetworkName) Len() int           { return len(r) }
    21  func (r byNetworkName) Swap(i, j int)      { r[i], r[j] = r[j], r[i] }
    22  func (r byNetworkName) Less(i, j int) bool { return r[i].Name < r[j].Name }
    23  
    24  type listOptions struct {
    25  	quiet   bool
    26  	noTrunc 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 [OPTIONS]",
    35  		Aliases: []string{"list"},
    36  		Short:   "List networks",
    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.BoolVar(&opts.noTrunc, "no-trunc", false, "Do not truncate the output")
    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  	w := tabwriter.NewWriter(dockerCli.Out(), 20, 1, 3, ' ', 0)
    73  	if !opts.quiet {
    74  		fmt.Fprintf(w, "NETWORK ID\tNAME\tDRIVER\tSCOPE")
    75  		fmt.Fprintf(w, "\n")
    76  	}
    77  
    78  	sort.Sort(byNetworkName(networkResources))
    79  	for _, networkResource := range networkResources {
    80  		ID := networkResource.ID
    81  		netName := networkResource.Name
    82  		driver := networkResource.Driver
    83  		scope := networkResource.Scope
    84  		if !opts.noTrunc {
    85  			ID = stringid.TruncateID(ID)
    86  		}
    87  		if opts.quiet {
    88  			fmt.Fprintln(w, ID)
    89  			continue
    90  		}
    91  		fmt.Fprintf(w, "%s\t%s\t%s\t%s\t",
    92  			ID,
    93  			netName,
    94  			driver,
    95  			scope)
    96  		fmt.Fprint(w, "\n")
    97  	}
    98  	w.Flush()
    99  	return nil
   100  }