func (c *VMCommand) Execute(args []string) error {
client, err := rpc.NewClient(true)
if err != nil {
return err
}
cfg, err := config.New(os.ExpandEnv("$SUDO_USER"))
if err != nil {
return err
}
err = cfg.Load()
if err != nil {
return err
}
vm := vm.New(cfg)
done, err := vm.Start()
if err != nil {
return err
}
shutdown := make(chan os.Signal, 1)
signal.Notify(shutdown, syscall.SIGINT, syscall.SIGTERM, syscall.SIGKILL)
go func() {
<-shutdown
var i int
client.Call("VM.Stop", "", &i)
}()
err = <-done
return err
}
func (c *StatusCommand) Execute(args []string) error {
client, err := rpc.NewClient(false)
if err != nil {
return err
}
status := args[0]
var i int
return client.Call("VM.SetStatus", status, &i)
}
func (c *StopCommand) Execute(args []string) error {
steps := Steps{
{
"Stopping virtual machine",
func() error {
client, err := rpc.NewClient(true)
if err != nil {
return err
}
var reply int
return client.Call("VM.Stop", os.ExpandEnv("$USER"), &reply)
},
},
}
return Spin(steps)
}
func (c *DaemonCommand) Execute(args []string) error {
client, err := rpc.NewClient(false)
if err != nil {
return err
}
log.Println("Polling for commands from server..")
for {
time.Sleep(time.Second)
var cmd rpc.Message
err := client.Call("VM.GetCommand", "", &cmd)
if err != nil {
if e, ok := err.(net.Error); ok && e.Timeout() {
continue
}
log.Println("Got an error:", err.Error())
return err
}
log.Println("Attempting to process message:", cmd.Command)
switch cmd.Command {
case "shutdown":
log.Println("Got shutdown command, halting virtual machine")
var i int
err = client.Call("VM.SetStatus", "The virtual machine is shutting down, please wait", &i)
err = exec.Command("halt").Run()
if err != nil {
log.Println(err)
}
case "wait":
continue
default:
log.Printf("Unknown command: %s\n", cmd)
}
}
return nil
}