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

     1  package common
     2  
     3  import (
     4  	"bytes"
     5  	"fmt"
     6  	"log"
     7  
     8  	"github.com/mitchellh/multistep"
     9  	"github.com/mitchellh/packer/packer"
    10  )
    11  
    12  // StepUploadVersion is a step that uploads a file containing the version of
    13  // Parallels Desktop, which can be useful for various provisioning reasons.
    14  //
    15  // Uses:
    16  //   communicator packer.Communicator
    17  //   driver Driver
    18  //   ui packer.Ui
    19  type StepUploadVersion struct {
    20  	Path string
    21  }
    22  
    23  // Run uploads a file containing the version of Parallels Desktop.
    24  func (s *StepUploadVersion) Run(state multistep.StateBag) multistep.StepAction {
    25  	comm := state.Get("communicator").(packer.Communicator)
    26  	driver := state.Get("driver").(Driver)
    27  	ui := state.Get("ui").(packer.Ui)
    28  
    29  	if s.Path == "" {
    30  		log.Println("ParallelsVersionFile is empty. Not uploading.")
    31  		return multistep.ActionContinue
    32  	}
    33  
    34  	version, err := driver.Version()
    35  	if err != nil {
    36  		state.Put("error", fmt.Errorf("Error reading version for metadata upload: %s", err))
    37  		return multistep.ActionHalt
    38  	}
    39  
    40  	ui.Say(fmt.Sprintf("Uploading Parallels version info (%s)", version))
    41  	var data bytes.Buffer
    42  	data.WriteString(version)
    43  	if err := comm.Upload(s.Path, &data, nil); err != nil {
    44  		state.Put("error", fmt.Errorf("Error uploading Parallels version: %s", err))
    45  		return multistep.ActionHalt
    46  	}
    47  
    48  	return multistep.ActionContinue
    49  }
    50  
    51  // Cleanup does nothing.
    52  func (s *StepUploadVersion) Cleanup(state multistep.StateBag) {}