github.phpd.cn/hashicorp/packer@v1.3.2/builder/hyperv/common/step_create_external_switch.go (about)

     1  package common
     2  
     3  import (
     4  	"context"
     5  	"fmt"
     6  
     7  	"github.com/hashicorp/packer/common/uuid"
     8  	"github.com/hashicorp/packer/helper/multistep"
     9  	"github.com/hashicorp/packer/packer"
    10  )
    11  
    12  // This step creates an external switch for the VM.
    13  //
    14  // Produces:
    15  //   SwitchName string - The name of the Switch
    16  type StepCreateExternalSwitch struct {
    17  	SwitchName    string
    18  	oldSwitchName string
    19  }
    20  
    21  // Run runs the step required to create an external switch. Depending on
    22  // the connectivity of the host machine, the external switch will allow the
    23  // build VM to connect to the outside world.
    24  func (s *StepCreateExternalSwitch) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
    25  	driver := state.Get("driver").(Driver)
    26  	ui := state.Get("ui").(packer.Ui)
    27  
    28  	vmName := state.Get("vmName").(string)
    29  	errorMsg := "Error creating external switch: %s"
    30  	var err error
    31  
    32  	ui.Say("Creating external switch...")
    33  
    34  	packerExternalSwitchName := "paes_" + uuid.TimeOrderedUUID()
    35  
    36  	// CreateExternalVirtualSwitch checks for an existing external switch,
    37  	// creating one if required, and connects the VM to it
    38  	err = driver.CreateExternalVirtualSwitch(vmName, packerExternalSwitchName)
    39  	if err != nil {
    40  		err := fmt.Errorf(errorMsg, err)
    41  		state.Put("error", err)
    42  		ui.Error(err.Error())
    43  		s.SwitchName = ""
    44  		return multistep.ActionHalt
    45  	}
    46  
    47  	switchName, err := driver.GetVirtualMachineSwitchName(vmName)
    48  	if err != nil {
    49  		err := fmt.Errorf(errorMsg, err)
    50  		state.Put("error", err)
    51  		ui.Error(err.Error())
    52  		return multistep.ActionHalt
    53  	}
    54  
    55  	if len(switchName) == 0 {
    56  		err := fmt.Errorf(errorMsg, err)
    57  		state.Put("error", "Can't get the VM switch name")
    58  		ui.Error(err.Error())
    59  		return multistep.ActionHalt
    60  	}
    61  
    62  	ui.Say("External switch name is: '" + switchName + "'")
    63  
    64  	if switchName != packerExternalSwitchName {
    65  		s.SwitchName = ""
    66  	} else {
    67  		s.SwitchName = packerExternalSwitchName
    68  		s.oldSwitchName = state.Get("SwitchName").(string)
    69  	}
    70  
    71  	// Set the final name in the state bag so others can use it
    72  	state.Put("SwitchName", switchName)
    73  
    74  	return multistep.ActionContinue
    75  }
    76  
    77  func (s *StepCreateExternalSwitch) Cleanup(state multistep.StateBag) {
    78  	if s.SwitchName == "" {
    79  		return
    80  	}
    81  	driver := state.Get("driver").(Driver)
    82  	ui := state.Get("ui").(packer.Ui)
    83  	vmName := state.Get("vmName").(string)
    84  
    85  	ui.Say("Unregistering and deleting external switch...")
    86  
    87  	var err error = nil
    88  
    89  	errMsg := "Error deleting external switch: %s"
    90  
    91  	// connect the vm to the old switch
    92  	if s.oldSwitchName == "" {
    93  		ui.Error(fmt.Sprintf(errMsg, "the old switch name is empty"))
    94  		return
    95  	}
    96  
    97  	err = driver.ConnectVirtualMachineNetworkAdapterToSwitch(vmName, s.oldSwitchName)
    98  	if err != nil {
    99  		ui.Error(fmt.Sprintf(errMsg, err))
   100  		return
   101  	}
   102  
   103  	state.Put("SwitchName", s.oldSwitchName)
   104  
   105  	err = driver.DeleteVirtualSwitch(s.SwitchName)
   106  	if err != nil {
   107  		ui.Error(fmt.Sprintf(errMsg, err))
   108  	}
   109  }