github.com/codemac/docker@v1.2.1-0.20150518222241-6a18412d5b9c/api/client/info.go (about)

     1  package client
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  
     7  	"github.com/docker/docker/api/types"
     8  	flag "github.com/docker/docker/pkg/mflag"
     9  	"github.com/docker/docker/pkg/units"
    10  )
    11  
    12  // CmdInfo displays system-wide information.
    13  //
    14  // Usage: docker info
    15  func (cli *DockerCli) CmdInfo(args ...string) error {
    16  	cmd := cli.Subcmd("info", "", "Display system-wide information", true)
    17  	cmd.Require(flag.Exact, 0)
    18  	cmd.ParseFlags(args, false)
    19  
    20  	rdr, _, err := cli.call("GET", "/info", nil, nil)
    21  	if err != nil {
    22  		return err
    23  	}
    24  
    25  	info := &types.Info{}
    26  	if err := json.NewDecoder(rdr).Decode(info); err != nil {
    27  		return fmt.Errorf("Error reading remote info: %v", err)
    28  	}
    29  
    30  	fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers)
    31  	fmt.Fprintf(cli.out, "Images: %d\n", info.Images)
    32  	fmt.Fprintf(cli.out, "Storage Driver: %s\n", info.Driver)
    33  	if info.DriverStatus != nil {
    34  		for _, pair := range info.DriverStatus {
    35  			fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1])
    36  		}
    37  	}
    38  	fmt.Fprintf(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
    39  	fmt.Fprintf(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
    40  	fmt.Fprintf(cli.out, "Kernel Version: %s\n", info.KernelVersion)
    41  	fmt.Fprintf(cli.out, "Operating System: %s\n", info.OperatingSystem)
    42  	fmt.Fprintf(cli.out, "CPUs: %d\n", info.NCPU)
    43  	fmt.Fprintf(cli.out, "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
    44  	fmt.Fprintf(cli.out, "Name: %s\n", info.Name)
    45  	fmt.Fprintf(cli.out, "ID: %s\n", info.ID)
    46  
    47  	if info.Debug {
    48  		fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug)
    49  		fmt.Fprintf(cli.out, "File Descriptors: %d\n", info.NFd)
    50  		fmt.Fprintf(cli.out, "Goroutines: %d\n", info.NGoroutines)
    51  		fmt.Fprintf(cli.out, "System Time: %s\n", info.SystemTime)
    52  		fmt.Fprintf(cli.out, "EventsListeners: %d\n", info.NEventsListener)
    53  		fmt.Fprintf(cli.out, "Init SHA1: %s\n", info.InitSha1)
    54  		fmt.Fprintf(cli.out, "Init Path: %s\n", info.InitPath)
    55  		fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir)
    56  	}
    57  
    58  	if info.HttpProxy != "" {
    59  		fmt.Fprintf(cli.out, "Http Proxy: %s\n", info.HttpProxy)
    60  	}
    61  	if info.HttpsProxy != "" {
    62  		fmt.Fprintf(cli.out, "Https Proxy: %s\n", info.HttpsProxy)
    63  	}
    64  	if info.NoProxy != "" {
    65  		fmt.Fprintf(cli.out, "No Proxy: %s\n", info.NoProxy)
    66  	}
    67  
    68  	if info.IndexServerAddress != "" {
    69  		u := cli.configFile.AuthConfigs[info.IndexServerAddress].Username
    70  		if len(u) > 0 {
    71  			fmt.Fprintf(cli.out, "Username: %v\n", u)
    72  			fmt.Fprintf(cli.out, "Registry: %v\n", info.IndexServerAddress)
    73  		}
    74  	}
    75  	if !info.MemoryLimit {
    76  		fmt.Fprintf(cli.err, "WARNING: No memory limit support\n")
    77  	}
    78  	if !info.SwapLimit {
    79  		fmt.Fprintf(cli.err, "WARNING: No swap limit support\n")
    80  	}
    81  	if !info.IPv4Forwarding {
    82  		fmt.Fprintf(cli.err, "WARNING: IPv4 forwarding is disabled.\n")
    83  	}
    84  	if info.Labels != nil {
    85  		fmt.Fprintln(cli.out, "Labels:")
    86  		for _, attribute := range info.Labels {
    87  			fmt.Fprintf(cli.out, " %s\n", attribute)
    88  		}
    89  	}
    90  
    91  	return nil
    92  }