105 lines
2.6 KiB
Go
105 lines
2.6 KiB
Go
package common
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import (
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"bytes"
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"errors"
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"fmt"
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"github.com/mitchellh/multistep"
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"github.com/mitchellh/packer/packer"
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"log"
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"time"
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)
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// This step shuts down the machine. It first attempts to do so gracefully,
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// but ultimately forcefully shuts it down if that fails.
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//
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// Uses:
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// communicator packer.Communicator
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// dir OutputDir
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// driver Driver
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// ui packer.Ui
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// vmx_path string
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//
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// Produces:
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// <nothing>
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type StepShutdown struct {
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Command string
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Timeout time.Duration
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}
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func (s *StepShutdown) Run(state multistep.StateBag) multistep.StepAction {
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comm := state.Get("communicator").(packer.Communicator)
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driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packer.Ui)
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vmName := state.Get("vmName").(string)
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if s.Command != "" {
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ui.Say("Gracefully halting virtual machine...")
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log.Printf("Executing shutdown command: %s", s.Command)
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var stdout, stderr bytes.Buffer
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cmd := &packer.RemoteCmd{
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Command: s.Command,
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Stdout: &stdout,
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Stderr: &stderr,
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}
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if err := comm.Start(cmd); err != nil {
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err := fmt.Errorf("Failed to send shutdown command: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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// Wait for the command to run
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cmd.Wait()
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stderrString := stderr.String()
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stdoutString := stdout.String()
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// If the command failed to run, notify the user in some way.
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if !(cmd.ExitStatus == 0 || (cmd.ExitStatus == 1 && len(stderrString) == 0)) {
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state.Put("error", fmt.Errorf(
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"Shutdown command has not successful.\n\nExitStatus: %d\n\nStdout: %s\n\nStderr: %s",
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cmd.ExitStatus, stdoutString, stderrString))
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return multistep.ActionHalt
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}
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log.Printf("Shutdown stdout: %s", stdoutString)
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log.Printf("Shutdown stderr: %s", stderrString)
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// Wait for the machine to actually shut down
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log.Printf("Waiting max %s for shutdown to complete", s.Timeout)
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shutdownTimer := time.After(s.Timeout)
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for {
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running, _ := driver.IsRunning(vmName)
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if !running {
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break
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}
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select {
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case <-shutdownTimer:
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err := errors.New("Timeout while waiting for machine to shut down.")
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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default:
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time.Sleep(150 * time.Millisecond)
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}
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}
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} else {
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ui.Say("Forcibly halting virtual machine...")
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if err := driver.Stop(vmName); err != nil {
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err := fmt.Errorf("Error stopping VM: %s", err)
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state.Put("error", err)
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ui.Error(err.Error())
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return multistep.ActionHalt
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}
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}
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log.Println("VM shut down.")
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return multistep.ActionContinue
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}
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func (s *StepShutdown) Cleanup(state multistep.StateBag) {}
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