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step_shutdown.go
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/
step_shutdown.go
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package virtualbox
import (
"errors"
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"log"
"time"
)
// This step shuts down the machine. It first attempts to do so gracefully,
// but ultimately forcefully shuts it down if that fails.
//
// Uses:
// communicator packer.Communicator
// config *config
// driver Driver
// ui packer.Ui
// vmName string
//
// Produces:
// <nothing>
type stepShutdown struct{}
func (s *stepShutdown) Run(state map[string]interface{}) multistep.StepAction {
comm := state["communicator"].(packer.Communicator)
config := state["config"].(*config)
driver := state["driver"].(Driver)
ui := state["ui"].(packer.Ui)
vmName := state["vmName"].(string)
if config.ShutdownCommand != "" {
ui.Say("Gracefully halting virtual machine...")
log.Printf("Executing shutdown command: %s", config.ShutdownCommand)
cmd := &packer.RemoteCmd{Command: config.ShutdownCommand}
if err := comm.Start(cmd); err != nil {
err := fmt.Errorf("Failed to send shutdown command: %s", err)
state["error"] = err
ui.Error(err.Error())
return multistep.ActionHalt
}
// Wait for the command to run
cmd.Wait()
// Wait for the machine to actually shut down
log.Printf("Waiting max %s for shutdown to complete", config.ShutdownTimeout)
shutdownTimer := time.After(config.ShutdownTimeout)
for {
running, _ := driver.IsRunning(vmName)
if !running {
break
}
select {
case <-shutdownTimer:
err := errors.New("Timeout while waiting for machine to shut down.")
state["error"] = err
ui.Error(err.Error())
return multistep.ActionHalt
default:
time.Sleep(1 * time.Second)
}
}
} else {
ui.Say("Halting the virtual machine...")
if err := driver.Stop(vmName); err != nil {
err := fmt.Errorf("Error stopping VM: %s", err)
state["error"] = err
ui.Error(err.Error())
return multistep.ActionHalt
}
}
log.Println("VM shut down.")
return multistep.ActionContinue
}
func (s *stepShutdown) Cleanup(state map[string]interface{}) {}