Files
virtual-kubelet/vendor/github.com/hyperhq/hypercli/hyper/hyper.go
2017-12-05 17:53:58 -06:00

115 lines
2.8 KiB
Go

package main
import (
"fmt"
"os"
"path/filepath"
"time"
"github.com/Sirupsen/logrus"
"github.com/hyperhq/hypercli/api/client"
"github.com/hyperhq/hypercli/cli"
"github.com/hyperhq/hypercli/dockerversion"
"github.com/hyperhq/hypercli/pkg/homedir"
flag "github.com/hyperhq/hypercli/pkg/mflag"
"github.com/hyperhq/hypercli/pkg/reexec"
"github.com/hyperhq/hypercli/pkg/selfupdate"
"github.com/hyperhq/hypercli/pkg/term"
"github.com/hyperhq/hypercli/utils"
)
func main() {
if reexec.Init() {
return
}
// Set terminal emulation based on platform as required.
stdin, stdout, stderr := term.StdStreams()
logrus.SetOutput(stderr)
flag.Merge(flag.CommandLine, clientFlags.FlagSet, commonFlags.FlagSet)
flag.Usage = func() {
fmt.Fprint(stdout, "Usage: hyper [OPTIONS] COMMAND [arg...]\n"+daemonUsage+" hyper [ --help | -v | --version ]\n\n")
fmt.Fprint(stdout, "A self-sufficient runtime for containers.\n\nOptions:\n")
flag.CommandLine.SetOutput(stdout)
flag.PrintDefaults()
help := "\nCommands:\n"
for _, cmd := range dockerCommands {
help += fmt.Sprintf(" %-10.10s%s\n", cmd.Name, cmd.Description)
}
help += "\nRun 'hyper COMMAND --help' for more information on a command."
fmt.Fprintf(stdout, "%s\n", help)
}
flag.Parse()
if *flVersion {
showVersion()
return
}
if *flHelp {
// if global flag --help is present, regardless of what other options and commands there are,
// just print the usage.
flag.Usage()
return
}
var errChan = make(chan error, 1)
var update bool = false
var updater = &selfupdate.Updater{
CurrentVersion: dockerversion.Version,
ApiURL: "https://hyper-update.s3.amazonaws.com/",
BinURL: "https://hyper-update.s3.amazonaws.com/",
DiffURL: "https://hyper-update.s3.amazonaws.com/",
Dir: filepath.Join(homedir.Get(), ".hyper"),
CmdName: "hyper", // app name
}
if updater != nil {
if update = updater.WantUpdate(); update {
go func() {
errChan <- updater.BackgroundRun(update)
}()
}
}
clientCli := client.NewDockerCli(stdin, stdout, stderr, clientFlags)
c := cli.New(clientCli, daemonCli)
if err := c.Run(flag.Args()...); err != nil {
if sterr, ok := err.(cli.StatusError); ok {
if sterr.Status != "" {
fmt.Fprintln(stderr, sterr.Status)
os.Exit(1)
}
os.Exit(sterr.StatusCode)
}
fmt.Fprintln(stderr, err)
os.Exit(1)
}
if updater != nil && update {
fmt.Fprintln(os.Stdout, "Found a newer version, downloading...")
select {
case <-time.After(20 * time.Second):
break
case <-errChan:
break
}
}
}
func showVersion() {
if utils.ExperimentalBuild() {
fmt.Printf("Hyper version %s, build %s, experimental\n", dockerversion.Version, dockerversion.GitCommit)
} else {
fmt.Printf("Hyper version %s, build %s\n", dockerversion.Version, dockerversion.GitCommit)
}
}