github.com/containers/libpod@v1.9.4-0.20220419124438-4284fd425507/cmd/podman/version.go (about) 1 package main 2 3 import ( 4 "fmt" 5 "io" 6 "os" 7 "strings" 8 "text/tabwriter" 9 "time" 10 11 "github.com/containers/buildah/pkg/formats" 12 "github.com/containers/libpod/cmd/podman/cliconfig" 13 "github.com/containers/libpod/libpod/define" 14 "github.com/containers/libpod/pkg/adapter" 15 "github.com/pkg/errors" 16 "github.com/spf13/cobra" 17 ) 18 19 var ( 20 versionCommand cliconfig.VersionValues 21 _versionCommand = &cobra.Command{ 22 Use: "version", 23 Args: noSubArgs, 24 Short: "Display the Podman Version Information", 25 RunE: func(cmd *cobra.Command, args []string) error { 26 versionCommand.InputArgs = args 27 versionCommand.GlobalFlags = MainGlobalOpts 28 versionCommand.Remote = remoteclient 29 return versionCmd(&versionCommand) 30 }, 31 } 32 ) 33 34 func init() { 35 versionCommand.Command = _versionCommand 36 versionCommand.SetUsageTemplate(UsageTemplate()) 37 flags := versionCommand.Flags() 38 flags.StringVarP(&versionCommand.Format, "format", "f", "", "Change the output format to JSON or a Go template") 39 } 40 func getRemoteVersion(c *cliconfig.VersionValues) (version define.Version, err error) { 41 runtime, err := adapter.GetRuntime(getContext(), &c.PodmanCommand) 42 if err != nil { 43 return version, errors.Wrapf(err, "could not get runtime") 44 } 45 defer runtime.DeferredShutdown(false) 46 47 return runtime.GetVersion() 48 } 49 50 type versionStruct struct { 51 Client define.Version 52 Server define.Version 53 } 54 55 // versionCmd gets and prints version info for version command 56 func versionCmd(c *cliconfig.VersionValues) error { 57 58 var ( 59 v versionStruct 60 err error 61 ) 62 v.Client, err = define.GetVersion() 63 if err != nil { 64 return errors.Wrapf(err, "unable to determine version") 65 } 66 if remote { 67 v.Server, err = getRemoteVersion(c) 68 if err != nil { 69 return err 70 } 71 } else { 72 v.Server = v.Client 73 } 74 75 versionOutputFormat := c.Format 76 if versionOutputFormat != "" { 77 if strings.Join(strings.Fields(versionOutputFormat), "") == "{{json.}}" { 78 versionOutputFormat = formats.JSONString 79 } 80 var out formats.Writer 81 switch versionOutputFormat { 82 case formats.JSONString: 83 out = formats.JSONStruct{Output: v} 84 return out.Out() 85 default: 86 out = formats.StdoutTemplate{Output: v, Template: versionOutputFormat} 87 err := out.Out() 88 if err != nil { 89 // On Failure, assume user is using older version of podman version --format and check client 90 out = formats.StdoutTemplate{Output: v.Client, Template: versionOutputFormat} 91 if err1 := out.Out(); err1 != nil { 92 return err 93 } 94 } 95 } 96 return nil 97 } 98 w := tabwriter.NewWriter(os.Stdout, 0, 0, 2, ' ', 0) 99 defer w.Flush() 100 101 if remote { 102 if _, err := fmt.Fprintf(w, "Client:\n"); err != nil { 103 return err 104 } 105 formatVersion(w, v.Client) 106 if _, err := fmt.Fprintf(w, "\nServer:\n"); err != nil { 107 return err 108 } 109 formatVersion(w, v.Server) 110 } else { 111 formatVersion(w, v.Client) 112 } 113 return nil 114 } 115 116 func formatVersion(writer io.Writer, version define.Version) { 117 fmt.Fprintf(writer, "Version:\t%s\n", version.Version) 118 fmt.Fprintf(writer, "RemoteAPI Version:\t%d\n", version.RemoteAPIVersion) 119 fmt.Fprintf(writer, "Go Version:\t%s\n", version.GoVersion) 120 if version.GitCommit != "" { 121 fmt.Fprintf(writer, "Git Commit:\t%s\n", version.GitCommit) 122 } 123 // Prints out the build time in readable format 124 if version.Built != 0 { 125 fmt.Fprintf(writer, "Built:\t%s\n", time.Unix(version.Built, 0).Format(time.ANSIC)) 126 } 127 128 fmt.Fprintf(writer, "OS/Arch:\t%s\n", version.OsArch) 129 }