github.com/tsuna/docker@v1.7.0-rc3/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  	"github.com/docker/docker/pkg/ioutils"
     9  	flag "github.com/docker/docker/pkg/mflag"
    10  	"github.com/docker/docker/pkg/units"
    11  )
    12  
    13  // CmdInfo displays system-wide information.
    14  //
    15  // Usage: docker info
    16  func (cli *DockerCli) CmdInfo(args ...string) error {
    17  	cmd := cli.Subcmd("info", "", "Display system-wide information", true)
    18  	cmd.Require(flag.Exact, 0)
    19  	cmd.ParseFlags(args, true)
    20  
    21  	rdr, _, err := cli.call("GET", "/info", nil, nil)
    22  	if err != nil {
    23  		return err
    24  	}
    25  
    26  	info := &types.Info{}
    27  	if err := json.NewDecoder(rdr).Decode(info); err != nil {
    28  		return fmt.Errorf("Error reading remote info: %v", err)
    29  	}
    30  
    31  	fmt.Fprintf(cli.out, "Containers: %d\n", info.Containers)
    32  	fmt.Fprintf(cli.out, "Images: %d\n", info.Images)
    33  	ioutils.FprintfIfNotEmpty(cli.out, "Storage Driver: %s\n", info.Driver)
    34  	if info.DriverStatus != nil {
    35  		for _, pair := range info.DriverStatus {
    36  			fmt.Fprintf(cli.out, " %s: %s\n", pair[0], pair[1])
    37  		}
    38  	}
    39  	ioutils.FprintfIfNotEmpty(cli.out, "Execution Driver: %s\n", info.ExecutionDriver)
    40  	ioutils.FprintfIfNotEmpty(cli.out, "Logging Driver: %s\n", info.LoggingDriver)
    41  	ioutils.FprintfIfNotEmpty(cli.out, "Kernel Version: %s\n", info.KernelVersion)
    42  	ioutils.FprintfIfNotEmpty(cli.out, "Operating System: %s\n", info.OperatingSystem)
    43  	fmt.Fprintf(cli.out, "CPUs: %d\n", info.NCPU)
    44  	fmt.Fprintf(cli.out, "Total Memory: %s\n", units.BytesSize(float64(info.MemTotal)))
    45  	ioutils.FprintfIfNotEmpty(cli.out, "Name: %s\n", info.Name)
    46  	ioutils.FprintfIfNotEmpty(cli.out, "ID: %s\n", info.ID)
    47  
    48  	if info.Debug {
    49  		fmt.Fprintf(cli.out, "Debug mode (server): %v\n", info.Debug)
    50  		fmt.Fprintf(cli.out, "File Descriptors: %d\n", info.NFd)
    51  		fmt.Fprintf(cli.out, "Goroutines: %d\n", info.NGoroutines)
    52  		fmt.Fprintf(cli.out, "System Time: %s\n", info.SystemTime)
    53  		fmt.Fprintf(cli.out, "EventsListeners: %d\n", info.NEventsListener)
    54  		fmt.Fprintf(cli.out, "Init SHA1: %s\n", info.InitSha1)
    55  		fmt.Fprintf(cli.out, "Init Path: %s\n", info.InitPath)
    56  		fmt.Fprintf(cli.out, "Docker Root Dir: %s\n", info.DockerRootDir)
    57  	}
    58  
    59  	ioutils.FprintfIfNotEmpty(cli.out, "Http Proxy: %s\n", info.HttpProxy)
    60  	ioutils.FprintfIfNotEmpty(cli.out, "Https Proxy: %s\n", info.HttpsProxy)
    61  	ioutils.FprintfIfNotEmpty(cli.out, "No Proxy: %s\n", info.NoProxy)
    62  
    63  	if info.IndexServerAddress != "" {
    64  		u := cli.configFile.AuthConfigs[info.IndexServerAddress].Username
    65  		if len(u) > 0 {
    66  			fmt.Fprintf(cli.out, "Username: %v\n", u)
    67  			fmt.Fprintf(cli.out, "Registry: %v\n", info.IndexServerAddress)
    68  		}
    69  	}
    70  	if !info.MemoryLimit {
    71  		fmt.Fprintf(cli.err, "WARNING: No memory limit support\n")
    72  	}
    73  	if !info.SwapLimit {
    74  		fmt.Fprintf(cli.err, "WARNING: No swap limit support\n")
    75  	}
    76  	if !info.IPv4Forwarding {
    77  		fmt.Fprintf(cli.err, "WARNING: IPv4 forwarding is disabled.\n")
    78  	}
    79  	if info.Labels != nil {
    80  		fmt.Fprintln(cli.out, "Labels:")
    81  		for _, attribute := range info.Labels {
    82  			fmt.Fprintf(cli.out, " %s\n", attribute)
    83  		}
    84  	}
    85  
    86  	if info.ExperimentalBuild {
    87  		fmt.Fprintf(cli.out, "Experimental: true\n")
    88  	}
    89  
    90  	return nil
    91  }