github.com/chenchun/docker@v1.3.2-0.20150629222414-20467faf132b/api/client/version.go (about)

     1  package client
     2  
     3  import (
     4  	"encoding/json"
     5  	"fmt"
     6  	"runtime"
     7  
     8  	"github.com/docker/docker/api"
     9  	"github.com/docker/docker/api/types"
    10  	"github.com/docker/docker/autogen/dockerversion"
    11  	flag "github.com/docker/docker/pkg/mflag"
    12  	"github.com/docker/docker/utils"
    13  )
    14  
    15  // CmdVersion shows Docker version information.
    16  //
    17  // Available version information is shown for: client Docker version, client API version, client Go version, client Git commit, client OS/Arch, server Docker version, server API version, server Go version, server Git commit, and server OS/Arch.
    18  //
    19  // Usage: docker version
    20  func (cli *DockerCli) CmdVersion(args ...string) error {
    21  	cmd := cli.Subcmd("version", nil, "Show the Docker version information.", true)
    22  	cmd.Require(flag.Exact, 0)
    23  
    24  	cmd.ParseFlags(args, true)
    25  
    26  	fmt.Println("Client:")
    27  	if dockerversion.VERSION != "" {
    28  		fmt.Fprintf(cli.out, " Version:      %s\n", dockerversion.VERSION)
    29  	}
    30  	fmt.Fprintf(cli.out, " API version:  %s\n", api.Version)
    31  	fmt.Fprintf(cli.out, " Go version:   %s\n", runtime.Version())
    32  	if dockerversion.GITCOMMIT != "" {
    33  		fmt.Fprintf(cli.out, " Git commit:   %s\n", dockerversion.GITCOMMIT)
    34  	}
    35  	if dockerversion.BUILDTIME != "" {
    36  		fmt.Fprintf(cli.out, " Built:        %s\n", dockerversion.BUILDTIME)
    37  	}
    38  	fmt.Fprintf(cli.out, " OS/Arch:      %s/%s\n", runtime.GOOS, runtime.GOARCH)
    39  	if utils.ExperimentalBuild() {
    40  		fmt.Fprintf(cli.out, " Experimental: true\n")
    41  	}
    42  
    43  	stream, _, _, err := cli.call("GET", "/version", nil, nil)
    44  	if err != nil {
    45  		return err
    46  	}
    47  
    48  	var v types.Version
    49  	if err := json.NewDecoder(stream).Decode(&v); err != nil {
    50  		fmt.Fprintf(cli.err, "Error reading remote version: %s\n", err)
    51  		return err
    52  	}
    53  
    54  	fmt.Println("\nServer:")
    55  	fmt.Fprintf(cli.out, " Version:      %s\n", v.Version)
    56  	if v.ApiVersion != "" {
    57  		fmt.Fprintf(cli.out, " API version:  %s\n", v.ApiVersion)
    58  	}
    59  	fmt.Fprintf(cli.out, " Go version:   %s\n", v.GoVersion)
    60  	fmt.Fprintf(cli.out, " Git commit:   %s\n", v.GitCommit)
    61  	if len(v.BuildTime) > 0 {
    62  		fmt.Fprintf(cli.out, " Built:        %s\n", v.BuildTime)
    63  	}
    64  	fmt.Fprintf(cli.out, " OS/Arch:      %s/%s\n", v.Os, v.Arch)
    65  	if v.Experimental {
    66  		fmt.Fprintf(cli.out, " Experimental: true\n")
    67  	}
    68  	fmt.Fprintf(cli.out, "\n")
    69  	return nil
    70  }