DockerCLI/cobraadaptor/adaptor.go

131 lines
4.1 KiB
Go

package cobraadaptor
import (
"github.com/docker/docker/api/client"
"github.com/docker/docker/api/client/container"
"github.com/docker/docker/api/client/image"
"github.com/docker/docker/api/client/network"
"github.com/docker/docker/api/client/system"
"github.com/docker/docker/api/client/volume"
"github.com/docker/docker/cli"
cliflags "github.com/docker/docker/cli/flags"
"github.com/docker/docker/pkg/term"
"github.com/spf13/cobra"
)
// CobraAdaptor is an adaptor for supporting spf13/cobra commands in the
// docker/cli framework
type CobraAdaptor struct {
rootCmd *cobra.Command
dockerCli *client.DockerCli
}
// NewCobraAdaptor returns a new handler
func NewCobraAdaptor(clientFlags *cliflags.ClientFlags) CobraAdaptor {
stdin, stdout, stderr := term.StdStreams()
dockerCli := client.NewDockerCli(stdin, stdout, stderr, clientFlags)
var rootCmd = &cobra.Command{
Use: "docker",
SilenceUsage: true,
SilenceErrors: true,
}
rootCmd.SetUsageTemplate(usageTemplate)
rootCmd.SetHelpTemplate(helpTemplate)
rootCmd.SetFlagErrorFunc(cli.FlagErrorFunc)
rootCmd.SetOutput(stdout)
rootCmd.AddCommand(
container.NewAttachCommand(dockerCli),
container.NewCreateCommand(dockerCli),
container.NewDiffCommand(dockerCli),
container.NewExportCommand(dockerCli),
container.NewKillCommand(dockerCli),
container.NewLogsCommand(dockerCli),
container.NewPauseCommand(dockerCli),
container.NewPortCommand(dockerCli),
container.NewRenameCommand(dockerCli),
container.NewRestartCommand(dockerCli),
container.NewRmCommand(dockerCli),
container.NewRunCommand(dockerCli),
container.NewStartCommand(dockerCli),
container.NewStatsCommand(dockerCli),
container.NewStopCommand(dockerCli),
container.NewTopCommand(dockerCli),
container.NewUnpauseCommand(dockerCli),
container.NewWaitCommand(dockerCli),
image.NewBuildCommand(dockerCli),
image.NewHistoryCommand(dockerCli),
image.NewImagesCommand(dockerCli),
image.NewLoadCommand(dockerCli),
image.NewRemoveCommand(dockerCli),
image.NewSearchCommand(dockerCli),
image.NewImportCommand(dockerCli),
image.NewTagCommand(dockerCli),
network.NewNetworkCommand(dockerCli),
system.NewEventsCommand(dockerCli),
system.NewVersionCommand(dockerCli),
volume.NewVolumeCommand(dockerCli),
)
rootCmd.PersistentFlags().BoolP("help", "h", false, "Print usage")
rootCmd.PersistentFlags().MarkShorthandDeprecated("help", "please use --help")
return CobraAdaptor{
rootCmd: rootCmd,
dockerCli: dockerCli,
}
}
// Usage returns the list of commands and their short usage string for
// all top level cobra commands.
func (c CobraAdaptor) Usage() []cli.Command {
cmds := []cli.Command{}
for _, cmd := range c.rootCmd.Commands() {
cmds = append(cmds, cli.Command{Name: cmd.Name(), Description: cmd.Short})
}
return cmds
}
func (c CobraAdaptor) run(cmd string, args []string) error {
if err := c.dockerCli.Initialize(); err != nil {
return err
}
// Prepend the command name to support normal cobra command delegation
c.rootCmd.SetArgs(append([]string{cmd}, args...))
return c.rootCmd.Execute()
}
// Command returns a cli command handler if one exists
func (c CobraAdaptor) Command(name string) func(...string) error {
for _, cmd := range c.rootCmd.Commands() {
if cmd.Name() == name {
return func(args ...string) error {
return c.run(name, args)
}
}
}
return nil
}
var usageTemplate = `Usage: {{if not .HasSubCommands}}{{if .HasLocalFlags}}{{appendIfNotPresent .UseLine "[OPTIONS]"}}{{else}}{{.UseLine}}{{end}}{{end}}{{if .HasSubCommands}}{{ .CommandPath}} COMMAND{{end}}
{{with or .Long .Short }}{{. | trim}}{{end}}{{if gt .Aliases 0}}
Aliases:
{{.NameAndAliases}}{{end}}{{if .HasExample}}
Examples:
{{ .Example }}{{end}}{{if .HasFlags}}
Options:
{{.Flags.FlagUsages | trimRightSpace}}{{end}}{{ if .HasAvailableSubCommands}}
Commands:{{range .Commands}}{{if .IsAvailableCommand}}
{{rpad .Name .NamePadding }} {{.Short}}{{end}}{{end}}{{end}}{{ if .HasSubCommands }}
Run '{{.CommandPath}} COMMAND --help' for more information on a command.{{end}}
`
var helpTemplate = `
{{if or .Runnable .HasSubCommands}}{{.UsageString}}{{end}}`