How to use persistentPreRunE method of cmd Package

Best K6 code snippet using cmd.persistentPreRunE

plugin.go

Source:plugin.go Github

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1package plugin2import (3 "encoding/json"4 "fmt"5 "os"6 "sync"7 "github.com/docker/cli/cli"8 "github.com/docker/cli/cli-plugins/manager"9 "github.com/docker/cli/cli/command"10 "github.com/docker/cli/cli/connhelper"11 "github.com/docker/docker/client"12 "github.com/spf13/cobra"13)14// PersistentPreRunE must be called by any plugin command (or15// subcommand) which uses the cobra `PersistentPreRun*` hook. Plugins16// which do not make use of `PersistentPreRun*` do not need to call17// this (although it remains safe to do so). Plugins are recommended18// to use `PersistenPreRunE` to enable the error to be19// returned. Should not be called outside of a command's20// PersistentPreRunE hook and must not be run unless Run has been21// called.22var PersistentPreRunE func(*cobra.Command, []string) error23func runPlugin(dockerCli *command.DockerCli, plugin *cobra.Command, meta manager.Metadata) error {24 tcmd := newPluginCommand(dockerCli, plugin, meta)25 var persistentPreRunOnce sync.Once26 PersistentPreRunE = func(_ *cobra.Command, _ []string) error {27 var err error28 persistentPreRunOnce.Do(func() {29 var opts []command.InitializeOpt30 if os.Getenv("DOCKER_CLI_PLUGIN_USE_DIAL_STDIO") != "" {31 opts = append(opts, withPluginClientConn(plugin.Name()))32 }33 err = tcmd.Initialize(opts...)34 })35 return err36 }37 cmd, args, err := tcmd.HandleGlobalFlags()38 if err != nil {39 return err40 }41 // We've parsed global args already, so reset args to those42 // which remain.43 cmd.SetArgs(args)44 return cmd.Execute()45}46// Run is the top-level entry point to the CLI plugin framework. It should be called from your plugin's `main()` function.47func Run(makeCmd func(command.Cli) *cobra.Command, meta manager.Metadata) {48 dockerCli, err := command.NewDockerCli()49 if err != nil {50 fmt.Fprintln(os.Stderr, err)51 os.Exit(1)52 }53 plugin := makeCmd(dockerCli)54 if err := runPlugin(dockerCli, plugin, meta); err != nil {55 if sterr, ok := err.(cli.StatusError); ok {56 if sterr.Status != "" {57 fmt.Fprintln(dockerCli.Err(), sterr.Status)58 }59 // StatusError should only be used for errors, and all errors should60 // have a non-zero exit status, so never exit with 061 if sterr.StatusCode == 0 {62 os.Exit(1)63 }64 os.Exit(sterr.StatusCode)65 }66 fmt.Fprintln(dockerCli.Err(), err)67 os.Exit(1)68 }69}70func withPluginClientConn(name string) command.InitializeOpt {71 return command.WithInitializeClient(func(dockerCli *command.DockerCli) (client.APIClient, error) {72 cmd := "docker"73 if x := os.Getenv(manager.ReexecEnvvar); x != "" {74 cmd = x75 }76 var flags []string77 // Accumulate all the global arguments, that is those78 // up to (but not including) the plugin's name. This79 // ensures that `docker system dial-stdio` is80 // evaluating the same set of `--config`, `--tls*` etc81 // global options as the plugin was called with, which82 // in turn is the same as what the original docker83 // invocation was passed.84 for _, a := range os.Args[1:] {85 if a == name {86 break87 }88 flags = append(flags, a)89 }90 flags = append(flags, "system", "dial-stdio")91 helper, err := connhelper.GetCommandConnectionHelper(cmd, flags...)92 if err != nil {93 return nil, err94 }95 return client.NewClientWithOpts(client.WithDialContext(helper.Dialer))96 })97}98func newPluginCommand(dockerCli *command.DockerCli, plugin *cobra.Command, meta manager.Metadata) *cli.TopLevelCommand {99 name := plugin.Name()100 fullname := manager.NamePrefix + name101 cmd := &cobra.Command{102 Use: fmt.Sprintf("docker [OPTIONS] %s [ARG...]", name),103 Short: fullname + " is a Docker CLI plugin",104 SilenceUsage: true,105 SilenceErrors: true,106 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {107 // We can't use this as the hook directly since it is initialised later (in runPlugin)108 return PersistentPreRunE(cmd, args)109 },110 TraverseChildren: true,111 DisableFlagsInUseLine: true,112 }113 opts, flags := cli.SetupPluginRootCommand(cmd)114 cmd.SetOutput(dockerCli.Out())115 cmd.AddCommand(116 plugin,117 newMetadataSubcommand(plugin, meta),118 )119 cli.DisableFlagsInUseLine(cmd)120 return cli.NewTopLevelCommand(cmd, dockerCli, opts, flags)121}122func newMetadataSubcommand(plugin *cobra.Command, meta manager.Metadata) *cobra.Command {123 if meta.ShortDescription == "" {124 meta.ShortDescription = plugin.Short125 }126 cmd := &cobra.Command{127 Use: manager.MetadataSubcommandName,128 Hidden: true,129 // Suppress the global/parent PersistentPreRunE, which130 // needlessly initializes the client and tries to131 // connect to the daemon.132 PersistentPreRun: func(cmd *cobra.Command, args []string) {},133 RunE: func(cmd *cobra.Command, args []string) error {134 enc := json.NewEncoder(os.Stdout)135 enc.SetEscapeHTML(false)136 enc.SetIndent("", " ")137 return enc.Encode(meta)138 },139 }140 return cmd141}...

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cobra.go

Source:cobra.go Github

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1package cmd2import (3 "github.com/spf13/cobra"4)5func AddSubCommand(cmd *cobra.Command, subCmd *cobra.Command) {6 if subCmd.PersistentPreRun != nil {7 innerFn := subCmd.PersistentPreRun8 subCmd.PersistentPreRun = func(cmd *cobra.Command, args []string) {9 if cmd.Parent().PersistentPreRun != nil {10 cmd.Parent().PersistentPreRun(cmd, args)11 }12 innerFn(cmd, args)13 }14 }15 if subCmd.PersistentPreRunE != nil {16 innerFn := subCmd.PersistentPreRunE17 subCmd.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {18 if cmd.Parent().PersistentPreRunE != nil {19 if err := cmd.Parent().PersistentPreRunE(cmd, args); err != nil {20 return err21 }22 }23 return innerFn(cmd, args)24 }25 }26 if subCmd.PersistentPostRun != nil {27 innerFn := subCmd.PersistentPostRun28 subCmd.PersistentPostRun = func(cmd *cobra.Command, args []string) {29 if cmd.Parent().PersistentPostRun != nil {30 cmd.Parent().PersistentPostRun(cmd, args)31 }32 innerFn(cmd, args)33 }34 }35 if subCmd.PersistentPostRunE != nil {36 innerFn := subCmd.PersistentPostRunE37 subCmd.PersistentPostRunE = func(cmd *cobra.Command, args []string) error {38 if cmd.Parent().PersistentPostRunE != nil {39 if err := cmd.Parent().PersistentPostRunE(cmd, args); err != nil {40 return err41 }42 }43 return innerFn(cmd, args)44 }45 }46 cmd.AddCommand(subCmd)47}...

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app.go

Source:app.go Github

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1package main2import (3 "errors"4 "fmt"5 "github.com/spf13/cobra"6)7// The *Run functions are executed in the following order:8// * PersistentPreRun()9// * PreRun()10// * Run()11// * PostRun()12// * PersistentPostRun()13func main() {14 cmd := &cobra.Command{15 Use: "app",16 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {17 fmt.Println("This is PersistentPreRunE")18 // return errors.New("this error is from PersistentPreRunE")19 return nil20 },21 PersistentPreRun: func(cmd *cobra.Command, args []string) {22 fmt.Println("This is PersistentPreRun")23 },24 PreRun: func(cmd *cobra.Command, args []string) {25 fmt.Println("This is PreRun")26 },27 Run: func(cmd *cobra.Command, args []string) {28 fmt.Println("This is Run")29 },30 RunE: func(cmd *cobra.Command, args []string) error {31 fmt.Println("This is RunE")32 // return errors.New("this error is from RunE")33 return nil34 },35 PostRun: func(cmd *cobra.Command, args []string) {36 fmt.Println("This is PreRun")37 },38 PersistentPostRun: func(cmd *cobra.Command, args []string) {39 fmt.Println("This is PersistentPostRun")40 },41 PersistentPostRunE: func(cmd *cobra.Command, args []string) error {42 fmt.Println("This is PersistentPostRunE")43 return errors.New("this error is from PersistentPostRunE")44 },45 }46 err := cmd.Execute()47 fmt.Println(err)48}...

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persistentPreRunE

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1import (2func main() {3 var rootCmd = &cobra.Command{Use: "app", PersistentPreRunE: func(cmd *cobra.Command, args []string) error {4 fmt.Println("PersistentPreRunE")5 }, Run: func(cmd *cobra.Command, args []string) {6 fmt.Println("Run")7 }}8 if err := rootCmd.Execute(); err != nil {9 fmt.Println(err)10 os.Exit(1)11 }12}

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persistentPreRunE

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1import (2var cmd1 = &cobra.Command{3 Run: func(cmd *cobra.Command, args []string) {4 fmt.Println("cmd1")5 },6 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {7 fmt.Println("cmd1 PersistentPreRunE")8 },9}10var cmd2 = &cobra.Command{11 Run: func(cmd *cobra.Command, args []string) {12 fmt.Println("cmd2")13 },14 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {15 fmt.Println("cmd2 PersistentPreRunE")16 },17}18func main() {19 cmd1.AddCommand(cmd2)20 cmd1.Execute()21}22import (23var cmd1 = &cobra.Command{24 Run: func(cmd *cobra.Command, args []string) {25 fmt.Println("cmd1")26 },27 PersistentPreRun: func(cmd *cobra.Command, args []string) {28 fmt.Println("cmd1 PersistentPreRun")29 },30}31var cmd2 = &cobra.Command{32 Run: func(cmd *cobra.Command, args []string) {33 fmt.Println("cmd2")34 },35 PersistentPreRun: func(cmd *cobra.Command, args []string) {36 fmt.Println("cmd2 PersistentPreRun")37 },38}39func main() {40 cmd1.AddCommand(cmd2)41 cmd1.Execute()42}43import (

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persistentPreRunE

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1import (2func main() {3 var cmd = &cobra.Command{4 Run: func(cmd *cobra.Command, args []string) {5 fmt.Println("Run called")6 },7 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {8 fmt.Println("PersistentPreRunE called")9 },10 }11 if err := cmd.Execute(); err != nil {12 fmt.Println(err)13 os.Exit(1)14 }15}16import (17func main() {18 var cmd = &cobra.Command{19 Run: func(cmd *cobra.Command, args []string) {20 fmt.Println("Run called")21 },22 PreRunE: func(cmd *cobra.Command, args []string) error {23 fmt.Println("PreRunE called")24 },25 }26 if err := cmd.Execute(); err != nil {27 fmt.Println(err)28 os.Exit(1)29 }30}31import (32func main() {33 var cmd = &cobra.Command{34 Run: func(cmd *cobra.Command, args []

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persistentPreRunE

Using AI Code Generation

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1import (2func main() {3 var cmd = &cobra.Command{4 }5 var cmd1 = &cobra.Command{6 }7 var cmd2 = &cobra.Command{8 }9 var cmd3 = &cobra.Command{10 }11 cmd1.PersistentPreRunE = func(cmd *cobra.Command, args []string) error {12 fmt.Println("cmd1 pre run")13 }14 cmd.AddCommand(cmd1)15 cmd.AddCommand(cmd2)16 cmd.AddCommand(cmd3)17 if err := cmd.Execute(); err != nil {18 log.Fatal(err)19 os.Exit(1)20 }21}

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persistentPreRunE

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1import (2func main() {3 var cmd = &cobra.Command{4 Run: func(cmd *cobra.Command, args []string) {5 fmt.Println("hello")6 },7 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {8 fmt.Println("hello persistent")9 },10 }11 cmd.Execute()12}13import (14func main() {15 var cmd = &cobra.Command{16 Run: func(cmd *cobra.Command, args []string) {17 fmt.Println("hello")18 },19 PersistentPostRunE: func(cmd *cobra.Command, args []string) error {20 fmt.Println("hello persistent")21 },22 }23 cmd.Execute()24}25import (26func main() {27 var cmd = &cobra.Command{28 Run: func(cmd *cobra.Command, args []string) {29 fmt.Println("hello")30 },31 PreRunE: func(cmd *cobra.Command, args []string) error {32 fmt.Println("hello persistent")33 },34 }35 cmd.Execute()36}37import (38func main() {39 var cmd = &cobra.Command{40 Run: func(cmd *cobra.Command, args []string) {41 fmt.Println("hello")42 },43 PostRunE: func(cmd *cobra.Command, args []string) error {44 fmt.Println("hello persistent")45 },

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persistentPreRunE

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1import (2func main() {3 var cmd = &cobra.Command{4 Run: func(cmd *cobra.Command, args []string) {5 fmt.Println("hello called")6 },7 PersistentPreRunE: func(cmd *cobra.Command, args []string) error {8 fmt.Println("hello called")9 },10 }11 if err := cmd.Execute(); err != nil {12 fmt.Println(err)13 os.Exit(1)14 }15}16import (17func main() {18 var cmd = &cobra.Command{19 Run: func(cmd *cobra.Command, args []string) {20 fmt.Println("hello called")21 },22 PersistentPreRun: func(cmd *cobra.Command, args []string) {23 fmt.Println("hello called")24 },25 }26 if err := cmd.Execute(); err != nil {27 fmt.Println(err)28 os.Exit(1)29 }30}31import (32func main() {33 var cmd = &cobra.Command{34 Run: func(cmd *cobra.Command, args []string) {35 fmt.Println("hello called")36 },37 PreRunE: func(cmd *cobra.Command, args []string) error {38 fmt.Println("hello called")39 },40 }41 if err := cmd.Execute(); err != nil {42 fmt.Println(err)43 os.Exit(1)44 }45}46import (47func main() {

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