github.com/kaisenlinux/docker.io@v0.0.0-20230510090727-ea55db55fac7/swarmkit/cmd/swarmctl/network/inspect.go (about)

     1  package network
     2  
     3  import (
     4  	"errors"
     5  	"fmt"
     6  	"os"
     7  	"text/tabwriter"
     8  
     9  	"github.com/docker/swarmkit/api"
    10  	"github.com/docker/swarmkit/cmd/swarmctl/common"
    11  	"github.com/spf13/cobra"
    12  )
    13  
    14  var (
    15  	inspectCmd = &cobra.Command{
    16  		Use:   "inspect <network ID>",
    17  		Short: "Inspect a network",
    18  		RunE: func(cmd *cobra.Command, args []string) error {
    19  			if len(args) == 0 {
    20  				return errors.New("network ID missing")
    21  			}
    22  
    23  			if len(args) > 1 {
    24  				return errors.New("inspect command takes exactly 1 argument")
    25  			}
    26  
    27  			c, err := common.Dial(cmd)
    28  			if err != nil {
    29  				return err
    30  			}
    31  			network, err := GetNetwork(common.Context(cmd), c, args[0])
    32  			if err != nil {
    33  				return err
    34  			}
    35  
    36  			printNetworkSummary(network)
    37  
    38  			return nil
    39  		},
    40  	}
    41  )
    42  
    43  func printNetworkSummary(network *api.Network) {
    44  	w := tabwriter.NewWriter(os.Stdout, 8, 8, 8, ' ', 0)
    45  	defer func() {
    46  		// Ignore flushing errors - there's nothing we can do.
    47  		_ = w.Flush()
    48  	}()
    49  
    50  	spec := &network.Spec
    51  	common.FprintfIfNotEmpty(w, "ID\t: %s\n", network.ID)
    52  	common.FprintfIfNotEmpty(w, "Name\t: %s\n", spec.Annotations.Name)
    53  
    54  	fmt.Fprintln(w, "Spec:\t")
    55  	if len(spec.Annotations.Labels) > 0 {
    56  		fmt.Fprintln(w, "  Labels:\t")
    57  		for k, v := range spec.Annotations.Labels {
    58  			fmt.Fprintf(w, "    %s = %s\n", k, v)
    59  		}
    60  	}
    61  	fmt.Fprintf(w, "  IPv6Enabled\t: %t\n", spec.Ipv6Enabled)
    62  	fmt.Fprintf(w, "  Internal\t: %t\n", spec.Internal)
    63  
    64  	driver := network.DriverState
    65  	if driver != nil {
    66  		fmt.Fprintln(w, "Driver:\t")
    67  		common.FprintfIfNotEmpty(w, "  Name\t: %s\n", driver.Name)
    68  		if len(driver.Options) > 0 {
    69  			fmt.Fprintln(w, "  Options:\t")
    70  			for k, v := range driver.Options {
    71  				fmt.Fprintf(w, "    %s = %s\n", k, v)
    72  			}
    73  		}
    74  	}
    75  
    76  	ipam := network.IPAM
    77  	if ipam != nil {
    78  		fmt.Fprintln(w, "IPAM:\t")
    79  		if ipam.Driver != nil {
    80  			fmt.Fprintln(w, "  Driver:\t")
    81  			common.FprintfIfNotEmpty(w, "    Name\t: %s\n", ipam.Driver.Name)
    82  			if len(ipam.Driver.Options) > 0 {
    83  				fmt.Fprintln(w, "    Options:\t")
    84  				for k, v := range ipam.Driver.Options {
    85  					fmt.Fprintf(w, "      %s = %s\n", k, v)
    86  				}
    87  			}
    88  		}
    89  
    90  		if len(ipam.Configs) > 0 {
    91  			for _, config := range ipam.Configs {
    92  				fmt.Fprintln(w, "  IPAM Config:\t")
    93  				common.FprintfIfNotEmpty(w, "    Family\t: %s\n", config.Family.String())
    94  				common.FprintfIfNotEmpty(w, "    Subnet\t: %s\n", config.Subnet)
    95  				common.FprintfIfNotEmpty(w, "    Range\t: %s\n", config.Range)
    96  				common.FprintfIfNotEmpty(w, "    Range\t: %s\n", config.Range)
    97  				common.FprintfIfNotEmpty(w, "    Gateway\t: %s\n", config.Gateway)
    98  				if len(config.Reserved) > 0 {
    99  					fmt.Fprintln(w, "    Reserved:\t")
   100  					for k, v := range config.Reserved {
   101  						fmt.Fprintf(w, "      %s = %s\n", k, v)
   102  					}
   103  				}
   104  			}
   105  		}
   106  	}
   107  }