github.com/rahart/packer@v0.12.2-0.20161229105310-282bb6ad370f/builder/parallels/common/step_compact_disk.go (about)

     1  package common
     2  
     3  import (
     4  	"fmt"
     5  
     6  	"github.com/mitchellh/multistep"
     7  	"github.com/mitchellh/packer/packer"
     8  )
     9  
    10  // StepCompactDisk is a step that removes all empty blocks from expanding
    11  // Parallels virtual disks and reduces the result disk size
    12  //
    13  // Uses:
    14  //   driver Driver
    15  //   vmName string
    16  //   ui     packer.Ui
    17  //
    18  // Produces:
    19  //   <nothing>
    20  type StepCompactDisk struct {
    21  	Skip bool
    22  }
    23  
    24  // Run runs the compaction of the virtual disk attached to the VM.
    25  func (s *StepCompactDisk) Run(state multistep.StateBag) multistep.StepAction {
    26  	driver := state.Get("driver").(Driver)
    27  	vmName := state.Get("vmName").(string)
    28  	ui := state.Get("ui").(packer.Ui)
    29  
    30  	if s.Skip {
    31  		ui.Say("Skipping disk compaction step...")
    32  		return multistep.ActionContinue
    33  	}
    34  
    35  	ui.Say("Compacting the disk image")
    36  	diskPath, err := driver.DiskPath(vmName)
    37  	if err != nil {
    38  		err = fmt.Errorf("Error detecting virtual disk path: %s", err)
    39  		state.Put("error", err)
    40  		ui.Error(err.Error())
    41  		return multistep.ActionHalt
    42  	}
    43  
    44  	if err := driver.CompactDisk(diskPath); err != nil {
    45  		state.Put("error", fmt.Errorf("Error compacting disk: %s", err))
    46  		ui.Error(err.Error())
    47  		return multistep.ActionHalt
    48  	}
    49  
    50  	return multistep.ActionContinue
    51  }
    52  
    53  // Cleanup does nothing.
    54  func (*StepCompactDisk) Cleanup(multistep.StateBag) {}