packer-plugin-xenserver/builder/xenserver/step_get_vnc_port.go

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package xenserver
import (
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"fmt"
"strconv"
"log"
)
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
}