mirror of https://github.com/docker/cli.git
119 lines
3.3 KiB
Go
119 lines
3.3 KiB
Go
package main
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import (
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"fmt"
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"os"
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"path/filepath"
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"github.com/Sirupsen/logrus"
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"github.com/docker/docker/api/client"
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"github.com/docker/docker/cli"
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"github.com/docker/docker/cli/cobraadaptor"
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cliflags "github.com/docker/docker/cli/flags"
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"github.com/docker/docker/cliconfig"
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"github.com/docker/docker/dockerversion"
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flag "github.com/docker/docker/pkg/mflag"
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"github.com/docker/docker/pkg/term"
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"github.com/docker/docker/utils"
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)
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var (
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commonFlags = cliflags.InitCommonFlags()
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clientFlags = initClientFlags(commonFlags)
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flHelp = flag.Bool([]string{"h", "-help"}, false, "Print usage")
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flVersion = flag.Bool([]string{"v", "-version"}, false, "Print version information and quit")
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)
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func main() {
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// Set terminal emulation based on platform as required.
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stdin, stdout, stderr := term.StdStreams()
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logrus.SetOutput(stderr)
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flag.Merge(flag.CommandLine, clientFlags.FlagSet, commonFlags.FlagSet)
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cobraAdaptor := cobraadaptor.NewCobraAdaptor(clientFlags)
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flag.Usage = func() {
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fmt.Fprint(stdout, "Usage: docker [OPTIONS] COMMAND [arg...]\n docker [ --help | -v | --version ]\n\n")
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fmt.Fprint(stdout, "A self-sufficient runtime for containers.\n\nOptions:\n")
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flag.CommandLine.SetOutput(stdout)
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flag.PrintDefaults()
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help := "\nCommands:\n"
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dockerCommands := append(cli.DockerCommandUsage, cobraAdaptor.Usage()...)
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for _, cmd := range sortCommands(dockerCommands) {
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help += fmt.Sprintf(" %-10.10s%s\n", cmd.Name, cmd.Description)
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}
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help += "\nRun 'docker COMMAND --help' for more information on a command."
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fmt.Fprintf(stdout, "%s\n", help)
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}
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flag.Parse()
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if *flVersion {
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showVersion()
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return
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}
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if *flHelp {
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// if global flag --help is present, regardless of what other options and commands there are,
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// just print the usage.
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flag.Usage()
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return
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}
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clientCli := client.NewDockerCli(stdin, stdout, stderr, clientFlags)
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c := cli.New(clientCli, NewDaemonProxy(), cobraAdaptor)
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if err := c.Run(flag.Args()...); err != nil {
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if sterr, ok := err.(cli.StatusError); ok {
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if sterr.Status != "" {
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fmt.Fprintln(stderr, sterr.Status)
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}
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// StatusError should only be used for errors, and all errors should
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// have a non-zero exit status, so never exit with 0
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if sterr.StatusCode == 0 {
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os.Exit(1)
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}
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os.Exit(sterr.StatusCode)
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}
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fmt.Fprintln(stderr, err)
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os.Exit(1)
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}
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}
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func showVersion() {
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if utils.ExperimentalBuild() {
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fmt.Printf("Docker version %s, build %s, experimental\n", dockerversion.Version, dockerversion.GitCommit)
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} else {
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fmt.Printf("Docker version %s, build %s\n", dockerversion.Version, dockerversion.GitCommit)
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}
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}
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func initClientFlags(commonFlags *cliflags.CommonFlags) *cliflags.ClientFlags {
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clientFlags := &cliflags.ClientFlags{FlagSet: new(flag.FlagSet), Common: commonFlags}
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client := clientFlags.FlagSet
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client.StringVar(&clientFlags.ConfigDir, []string{"-config"}, cliconfig.ConfigDir(), "Location of client config files")
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clientFlags.PostParse = func() {
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clientFlags.Common.PostParse()
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if clientFlags.ConfigDir != "" {
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cliconfig.SetConfigDir(clientFlags.ConfigDir)
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}
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if clientFlags.Common.TrustKey == "" {
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clientFlags.Common.TrustKey = filepath.Join(cliconfig.ConfigDir(), cliflags.DefaultTrustKeyFile)
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}
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if clientFlags.Common.Debug {
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utils.EnableDebug()
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}
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}
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return clientFlags
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}
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