// CmdVersion shows Docker version information.
//
// 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.
//
// Usage: docker version
func (cli *DockerCli) CmdVersion(args ...string) (err error) {
cmd := Cli.Subcmd("version", nil, Cli.DockerCommands["version"].Description, true)
tmplStr := cmd.String([]string{"f", "#format", "-format"}, "", "Format the output using the given go template")
cmd.Require(flag.Exact, 0)
cmd.ParseFlags(args, true)
templateFormat := versionTemplate
if *tmplStr != "" {
templateFormat = *tmplStr
}
var tmpl *template.Template
if tmpl, err = template.New("").Funcs(funcMap).Parse(templateFormat); err != nil {
return Cli.StatusError{StatusCode: 64,
Status: "Template parsing error: " + err.Error()}
}
vd := types.VersionResponse{
Client: &types.Version{
Version: dockerversion.Version,
APIVersion: version.Version(cli.client.ClientVersion()),
GoVersion: runtime.Version(),
GitCommit: dockerversion.GitCommit,
BuildTime: dockerversion.BuildTime,
Os: runtime.GOOS,
Arch: runtime.GOARCH,
Experimental: utils.ExperimentalBuild(),
},
}
serverVersion, err := cli.client.ServerVersion()
if err == nil {
vd.Server = &serverVersion
}
// first we need to make BuildTime more human friendly
t, errTime := time.Parse(time.RFC3339Nano, vd.Client.BuildTime)
if errTime == nil {
vd.Client.BuildTime = t.Format(time.ANSIC)
}
if vd.ServerOK() {
t, errTime = time.Parse(time.RFC3339Nano, vd.Server.BuildTime)
if errTime == nil {
vd.Server.BuildTime = t.Format(time.ANSIC)
}
}
if err2 := tmpl.Execute(cli.out, vd); err2 != nil && err == nil {
err = err2
}
cli.out.Write([]byte{'\n'})
return err
}
func runVersion(dockerCli *command.DockerCli, opts *versionOptions) error {
ctx := context.Background()
templateFormat := versionTemplate
if opts.format != "" {
templateFormat = opts.format
}
tmpl, err := templates.Parse(templateFormat)
if err != nil {
return cli.StatusError{StatusCode: 64,
Status: "Template parsing error: " + err.Error()}
}
APIVersion := dockerCli.Client().ClientVersion()
if defaultAPIVersion := dockerCli.DefaultVersion(); APIVersion != defaultAPIVersion {
APIVersion = fmt.Sprintf("%s (downgraded from %s)", APIVersion, defaultAPIVersion)
}
vd := types.VersionResponse{
Client: &types.Version{
Version: dockerversion.Version,
APIVersion: APIVersion,
GoVersion: runtime.Version(),
GitCommit: dockerversion.GitCommit,
BuildTime: dockerversion.BuildTime,
Os: runtime.GOOS,
Arch: runtime.GOARCH,
},
}
serverVersion, err := dockerCli.Client().ServerVersion(ctx)
if err == nil {
vd.Server = &serverVersion
}
// first we need to make BuildTime more human friendly
t, errTime := time.Parse(time.RFC3339Nano, vd.Client.BuildTime)
if errTime == nil {
vd.Client.BuildTime = t.Format(time.ANSIC)
}
if vd.ServerOK() {
t, errTime = time.Parse(time.RFC3339Nano, vd.Server.BuildTime)
if errTime == nil {
vd.Server.BuildTime = t.Format(time.ANSIC)
}
}
if err2 := tmpl.Execute(dockerCli.Out(), vd); err2 != nil && err == nil {
err = err2
}
dockerCli.Out().Write([]byte{'\n'})
return err
}