package xenserver import ( "fmt" "github.com/mitchellh/multistep" "github.com/mitchellh/packer/packer" "log" "strconv" ) type stepGetVNCPort struct{} func (self *stepGetVNCPort) Run(state multistep.StateBag) multistep.StepAction { config := state.Get("config").(config) ui := state.Get("ui").(packer.Ui) ui.Say("Step: forward the instances VNC port over SSH") domid := state.Get("domid").(string) cmd := fmt.Sprintf("xenstore-read /local/domain/%s/console/vnc-port", domid) remote_vncport, _ := execute_ssh_cmd(cmd, config.HostIp, "22", config.Username, config.Password) remote_port, err := strconv.ParseUint(remote_vncport, 10, 16) if err != nil { log.Fatal(err.Error()) log.Fatal(fmt.Sprintf("Unable to convert '%s' to an int", remote_vncport)) return multistep.ActionHalt } state.Put("instance_vnc_port", uint(remote_port)) return multistep.ActionContinue } func (self *stepGetVNCPort) Cleanup(state multistep.StateBag) { } func instanceVNCPort(state multistep.StateBag) (uint, error) { vncPort := state.Get("instance_vnc_port").(uint) return vncPort, nil } func instanceVNCIP(state multistep.StateBag) (string, error) { // The port is in Dom0, so we want to forward from localhost return "127.0.0.1", nil }