github.com/StackPointCloud/packer@v0.10.2-0.20180716202532-b28098e0f79b/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 switch for 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  func (s *StepCreateExternalSwitch) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
    22  	driver := state.Get("driver").(Driver)
    23  	ui := state.Get("ui").(packer.Ui)
    24  
    25  	vmName := state.Get("vmName").(string)
    26  	errorMsg := "Error creating external switch: %s"
    27  	var err error
    28  
    29  	ui.Say("Creating external switch...")
    30  
    31  	packerExternalSwitchName := "paes_" + uuid.TimeOrderedUUID()
    32  
    33  	err = driver.CreateExternalVirtualSwitch(vmName, packerExternalSwitchName)
    34  	if err != nil {
    35  		err := fmt.Errorf("Error creating switch: %s", err)
    36  		state.Put(errorMsg, err)
    37  		ui.Error(err.Error())
    38  		s.SwitchName = ""
    39  		return multistep.ActionHalt
    40  	}
    41  
    42  	switchName, err := driver.GetVirtualMachineSwitchName(vmName)
    43  	if err != nil {
    44  		err := fmt.Errorf(errorMsg, err)
    45  		state.Put("error", err)
    46  		ui.Error(err.Error())
    47  		return multistep.ActionHalt
    48  	}
    49  
    50  	if len(switchName) == 0 {
    51  		err := fmt.Errorf(errorMsg, err)
    52  		state.Put("error", "Can't get the VM switch name")
    53  		ui.Error(err.Error())
    54  		return multistep.ActionHalt
    55  	}
    56  
    57  	ui.Say("External switch name is: '" + switchName + "'")
    58  
    59  	if switchName != packerExternalSwitchName {
    60  		s.SwitchName = ""
    61  	} else {
    62  		s.SwitchName = packerExternalSwitchName
    63  		s.oldSwitchName = state.Get("SwitchName").(string)
    64  	}
    65  
    66  	// Set the final name in the state bag so others can use it
    67  	state.Put("SwitchName", switchName)
    68  
    69  	return multistep.ActionContinue
    70  }
    71  
    72  func (s *StepCreateExternalSwitch) Cleanup(state multistep.StateBag) {
    73  	if s.SwitchName == "" {
    74  		return
    75  	}
    76  	driver := state.Get("driver").(Driver)
    77  	ui := state.Get("ui").(packer.Ui)
    78  	vmName := state.Get("vmName").(string)
    79  
    80  	ui.Say("Unregistering and deleting external switch...")
    81  
    82  	var err error = nil
    83  
    84  	errMsg := "Error deleting external switch: %s"
    85  
    86  	// connect the vm to the old switch
    87  	if s.oldSwitchName == "" {
    88  		ui.Error(fmt.Sprintf(errMsg, "the old switch name is empty"))
    89  		return
    90  	}
    91  
    92  	err = driver.ConnectVirtualMachineNetworkAdapterToSwitch(vmName, s.oldSwitchName)
    93  	if err != nil {
    94  		ui.Error(fmt.Sprintf(errMsg, err))
    95  		return
    96  	}
    97  
    98  	state.Put("SwitchName", s.oldSwitchName)
    99  
   100  	err = driver.DeleteVirtualSwitch(s.SwitchName)
   101  	if err != nil {
   102  		ui.Error(fmt.Sprintf(errMsg, err))
   103  	}
   104  }