141 lines
3.6 KiB
Go
141 lines
3.6 KiB
Go
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package common
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import (
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"context"
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"fmt"
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"regexp"
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"strconv"
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"strings"
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"github.com/hashicorp/packer/helper/multistep"
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"github.com/hashicorp/packer/packer"
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)
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type StepSetFirstBootDevice struct {
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Generation uint
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FirstBootDevice string
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}
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func ParseBootDeviceIdentifier(deviceIdentifier string, generation uint) (string, uint, uint, error) {
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captureExpression := "^(FLOPPY|IDE|NET)|(CD|DVD)$"
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if generation > 1 {
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captureExpression = "^((IDE|SCSI):(\\d+):(\\d+))|(DVD|CD)|(NET)$"
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}
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r, err := regexp.Compile(captureExpression)
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if err != nil {
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return "", 0, 0, err
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}
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// match against the appropriate set of values.. we force to uppercase to ensure that
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// all devices are always in the same case
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identifierMatches := r.FindStringSubmatch(strings.ToUpper(deviceIdentifier))
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if identifierMatches == nil {
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return "", 0, 0, fmt.Errorf("The value %q is not a properly formatted device or device group identifier.", deviceIdentifier)
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}
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switch {
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// CD or DVD are always returned as "CD"
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case ((generation == 1) && (identifierMatches[2] != "")) || ((generation > 1) && (identifierMatches[5] != "")):
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return "CD", 0, 0, nil
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// generation 1 only has FLOPPY, IDE or NET remaining..
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case (generation == 1):
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return identifierMatches[0], 0, 0, nil
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// generation 2, check for IDE or SCSI and parse location and number
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case (identifierMatches[2] != ""):
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{
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var controllerLocation int64
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var controllerNumber int64
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// NOTE: controllerNumber and controllerLocation cannot be negative, the regex expression
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// would not have matched if either number was signed
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controllerNumber, err = strconv.ParseInt(identifierMatches[3], 10, 8)
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if err == nil {
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controllerLocation, err = strconv.ParseInt(identifierMatches[4], 10, 8)
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if err == nil {
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return identifierMatches[2], uint(controllerNumber), uint(controllerLocation), nil
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}
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}
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return "", 0, 0, err
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}
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// only "NET" left on generation 2
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default:
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return "NET", 0, 0, nil
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}
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}
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func (s *StepSetFirstBootDevice) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packer.Ui)
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vmName := state.Get("vmName").(string)
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if s.FirstBootDevice != "" {
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controllerType, controllerNumber, controllerLocation, err := ParseBootDeviceIdentifier(s.FirstBootDevice, s.Generation)
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if err == nil {
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switch {
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case controllerType == "CD":
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{
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// the "DVD" controller is special, we only apply the setting if we actually mounted
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// an ISO and only if that was mounted as the "IsoUrl" not a secondary ISO.
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dvdControllerState := state.Get("os.dvd.properties")
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if dvdControllerState == nil {
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ui.Say("First Boot Device is DVD, but no primary ISO mounted. Ignoring.")
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return multistep.ActionContinue
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}
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ui.Say(fmt.Sprintf("Setting boot device to %q", s.FirstBootDevice))
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dvdController := dvdControllerState.(DvdControllerProperties)
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err = driver.SetFirstBootDevice(vmName, controllerType, dvdController.ControllerNumber, dvdController.ControllerLocation, s.Generation)
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}
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default:
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{
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// anything else, we just pass as is..
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ui.Say(fmt.Sprintf("Setting boot device to %q", s.FirstBootDevice))
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err = driver.SetFirstBootDevice(vmName, controllerType, controllerNumber, controllerLocation, s.Generation)
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}
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}
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}
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if err != nil {
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err := fmt.Errorf("Error setting first boot device: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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}
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return multistep.ActionContinue
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}
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func (s *StepSetFirstBootDevice) Cleanup(state multistep.StateBag) {
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// do nothing
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}
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