package client import ( "encoding/json" "runtime" "text/template" "github.com/docker/docker/api" "github.com/docker/docker/api/types" "github.com/docker/docker/autogen/dockerversion" flag "github.com/docker/docker/pkg/mflag" "github.com/docker/docker/utils" ) var VersionTemplate = `Client: Version: {{.Client.Version}} API version: {{.Client.ApiVersion}} Go version: {{.Client.GoVersion}} Git commit: {{.Client.GitCommit}} Built: {{.Client.BuildTime}} OS/Arch: {{.Client.Os}}/{{.Client.Arch}}{{if .Client.Experimental}} Experimental: {{.Client.Experimental}}{{end}}{{if .ServerOK}} Server: Version: {{.Server.Version}} API version: {{.Server.ApiVersion}} Go version: {{.Server.GoVersion}} Git commit: {{.Server.GitCommit}} Built: {{.Server.BuildTime}} OS/Arch: {{.Server.Os}}/{{.Server.Arch}}{{if .Server.Experimental}} Experimental: {{.Server.Experimental}}{{end}}{{end}}` type VersionData struct { Client types.Version ServerOK bool Server types.Version } // 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, "Show the Docker version information.", 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) if *tmplStr == "" { *tmplStr = VersionTemplate } var tmpl *template.Template if tmpl, err = template.New("").Funcs(funcMap).Parse(*tmplStr); err != nil { return StatusError{StatusCode: 64, Status: "Template parsing error: " + err.Error()} } vd := VersionData{ Client: types.Version{ Version: dockerversion.VERSION, ApiVersion: api.Version, GoVersion: runtime.Version(), GitCommit: dockerversion.GITCOMMIT, BuildTime: dockerversion.BUILDTIME, Os: runtime.GOOS, Arch: runtime.GOARCH, Experimental: utils.ExperimentalBuild(), }, } defer func() { if err2 := tmpl.Execute(cli.out, vd); err2 != nil && err == nil { err = err2 } cli.out.Write([]byte{'\n'}) }() serverResp, err := cli.call("GET", "/version", nil, nil) if err != nil { return err } defer serverResp.body.Close() if err = json.NewDecoder(serverResp.body).Decode(&vd.Server); err != nil { return StatusError{StatusCode: 1, Status: "Error reading remote version: " + err.Error()} } vd.ServerOK = true return }