github.com/circular-dark/docker@v1.7.0/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", "", "Show the Docker version information.", true)
    22  	cmd.Require(flag.Exact, 0)
    23  
    24  	cmd.ParseFlags(args, true)
    25  
    26  	if dockerversion.VERSION != "" {
    27  		fmt.Fprintf(cli.out, "Client version: %s\n", dockerversion.VERSION)
    28  	}
    29  	fmt.Fprintf(cli.out, "Client API version: %s\n", api.APIVERSION)
    30  	fmt.Fprintf(cli.out, "Go version (client): %s\n", runtime.Version())
    31  	if dockerversion.GITCOMMIT != "" {
    32  		fmt.Fprintf(cli.out, "Git commit (client): %s\n", dockerversion.GITCOMMIT)
    33  	}
    34  	fmt.Fprintf(cli.out, "OS/Arch (client): %s/%s\n", runtime.GOOS, runtime.GOARCH)
    35  	if utils.ExperimentalBuild() {
    36  		fmt.Fprintf(cli.out, "Experimental (client): true\n")
    37  	}
    38  
    39  	stream, _, err := cli.call("GET", "/version", nil, nil)
    40  	if err != nil {
    41  		return err
    42  	}
    43  
    44  	var v types.Version
    45  	if err := json.NewDecoder(stream).Decode(&v); err != nil {
    46  		fmt.Fprintf(cli.err, "Error reading remote version: %s\n", err)
    47  		return err
    48  	}
    49  
    50  	fmt.Fprintf(cli.out, "Server version: %s\n", v.Version)
    51  	if v.ApiVersion != "" {
    52  		fmt.Fprintf(cli.out, "Server API version: %s\n", v.ApiVersion)
    53  	}
    54  	fmt.Fprintf(cli.out, "Go version (server): %s\n", v.GoVersion)
    55  	fmt.Fprintf(cli.out, "Git commit (server): %s\n", v.GitCommit)
    56  	fmt.Fprintf(cli.out, "OS/Arch (server): %s/%s\n", v.Os, v.Arch)
    57  	if v.Experimental {
    58  		fmt.Fprintf(cli.out, "Experimental (server): true\n")
    59  	}
    60  	return nil
    61  }