func Info(flag *flag.FlagSet) Command {
query := crank.InfoQuery{}
return func(client *rpc.Client) (err error) {
var reply crank.InfoReply
if err = client.Call("crank.Info", &query, &reply); err != nil {
return
}
fmt.Printf("crankctl\n-------\n%s\n\n", crank.GetInfo(build))
fmt.Printf("crank\n-----\n%s\n", reply.Info)
return
}
}
func main() {
var err error
if err = flags.Parse(os.Args[1:]); err != nil {
usageError("%s", err)
}
if version {
fmt.Println(crank.GetInfo(build))
return
}
command := flags.Arg(0)
if command == "" {
usageError("command missing")
}
cmdSetup, ok := commands[command]
if !ok {
usageError("unknown command %s", command)
}
flagSet := flag.NewFlagSet(os.Args[0]+" "+command, flag.ExitOnError)
defaultFlags(flagSet)
cmd := cmdSetup(flagSet)
if err = flagSet.Parse(flags.Args()[1:]); err != nil {
usageError("%s", err)
}
ctl = crank.DefaultCtl(ctl, prefix, name)
conn, err := netutil.DialURI(ctl)
if err != nil {
fail("couldn't connect: %s", err)
}
client := rpc.NewClient(conn)
if err = cmd(client); err != nil {
fail("command failed: %v", err)
}
}