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

     1  package common
     2  
     3  import (
     4  	"context"
     5  	"errors"
     6  	"fmt"
     7  	"log"
     8  	"time"
     9  
    10  	"github.com/hashicorp/packer/helper/multistep"
    11  	"github.com/hashicorp/packer/packer"
    12  )
    13  
    14  // This step shuts down the machine. It first attempts to do so gracefully,
    15  // but ultimately forcefully shuts it down if that fails.
    16  //
    17  // Uses:
    18  //   communicator packer.Communicator
    19  //   driver Driver
    20  //   ui     packer.Ui
    21  //   vmName string
    22  //
    23  // Produces:
    24  //   <nothing>
    25  type StepShutdown struct {
    26  	Command string
    27  	Timeout time.Duration
    28  	Delay   time.Duration
    29  }
    30  
    31  func (s *StepShutdown) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
    32  	comm := state.Get("communicator").(packer.Communicator)
    33  	driver := state.Get("driver").(Driver)
    34  	ui := state.Get("ui").(packer.Ui)
    35  	vmName := state.Get("vmName").(string)
    36  
    37  	if s.Command != "" {
    38  		ui.Say("Gracefully halting virtual machine...")
    39  		log.Printf("Executing shutdown command: %s", s.Command)
    40  		cmd := &packer.RemoteCmd{Command: s.Command}
    41  		if err := cmd.StartWithUi(comm, ui); err != nil {
    42  			err := fmt.Errorf("Failed to send shutdown command: %s", err)
    43  			state.Put("error", err)
    44  			ui.Error(err.Error())
    45  			return multistep.ActionHalt
    46  		}
    47  
    48  		// Wait for the machine to actually shut down
    49  		log.Printf("Waiting max %s for shutdown to complete", s.Timeout)
    50  		shutdownTimer := time.After(s.Timeout)
    51  		for {
    52  			running, _ := driver.IsRunning(vmName)
    53  			if !running {
    54  
    55  				if s.Delay.Nanoseconds() > 0 {
    56  					log.Printf("Delay for %s after shutdown to allow locks to clear...", s.Delay)
    57  					time.Sleep(s.Delay)
    58  				}
    59  
    60  				break
    61  			}
    62  
    63  			select {
    64  			case <-shutdownTimer:
    65  				err := errors.New("Timeout while waiting for machine to shut down.")
    66  				state.Put("error", err)
    67  				ui.Error(err.Error())
    68  				return multistep.ActionHalt
    69  			default:
    70  				time.Sleep(500 * time.Millisecond)
    71  			}
    72  		}
    73  	} else {
    74  		ui.Say("Halting the virtual machine...")
    75  		if err := driver.Stop(vmName); err != nil {
    76  			err := fmt.Errorf("Error stopping VM: %s", err)
    77  			state.Put("error", err)
    78  			ui.Error(err.Error())
    79  			return multistep.ActionHalt
    80  		}
    81  	}
    82  
    83  	log.Println("VM shut down.")
    84  	return multistep.ActionContinue
    85  }
    86  
    87  func (s *StepShutdown) Cleanup(state multistep.StateBag) {}