packer-cn/builder/vmware/common/step_shutdown.go

156 lines
3.9 KiB
Go

package common
import (
"bytes"
"errors"
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"log"
"regexp"
"runtime"
"strings"
"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
// dir OutputDir
// driver Driver
// ui packer.Ui
// vmx_path string
//
// Produces:
// <nothing>
type StepShutdown struct {
Command string
Timeout time.Duration
// Set this to true if we're testing
Testing bool
}
func (s *StepShutdown) Run(state multistep.StateBag) multistep.StepAction {
comm := state.Get("communicator").(packer.Communicator)
dir := state.Get("dir").(OutputDir)
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
vmxPath := state.Get("vmx_path").(string)
if s.Command != "" {
ui.Say("Gracefully halting virtual machine...")
log.Printf("Executing shutdown command: %s", s.Command)
var stdout, stderr bytes.Buffer
cmd := &packer.RemoteCmd{
Command: s.Command,
Stdout: &stdout,
Stderr: &stderr,
}
if err := comm.Start(cmd); err != nil {
err := fmt.Errorf("Failed to send shutdown command: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Wait for the command to run
cmd.Wait()
// If the command failed to run, notify the user in some way.
if cmd.ExitStatus != 0 {
state.Put("error", fmt.Errorf(
"Shutdown command has non-zero exit status.\n\nStdout: %s\n\nStderr: %s",
stdout.String(), stderr.String()))
return multistep.ActionHalt
}
log.Printf("Shutdown stdout: %s", stdout.String())
log.Printf("Shutdown stderr: %s", stderr.String())
// Wait for the machine to actually shut down
log.Printf("Waiting max %s for shutdown to complete", s.Timeout)
shutdownTimer := time.After(s.Timeout)
for {
running, _ := driver.IsRunning(vmxPath)
if !running {
break
}
select {
case <-shutdownTimer:
err := errors.New("Timeout while waiting for machine to shut down.")
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
default:
time.Sleep(150 * time.Millisecond)
}
}
} else {
ui.Say("Forcibly halting virtual machine...")
if err := driver.Stop(vmxPath); err != nil {
err := fmt.Errorf("Error stopping VM: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
ui.Message("Waiting for VMware to clean up after itself...")
lockRegex := regexp.MustCompile(`(?i)\.lck$`)
timer := time.After(120 * time.Second)
LockWaitLoop:
for {
files, err := dir.ListFiles()
if err != nil {
log.Printf("Error listing files in outputdir: %s", err)
} else {
var locks []string
for _, file := range files {
if lockRegex.MatchString(file) {
locks = append(locks, file)
}
}
if len(locks) == 0 {
log.Println("No more lock files found. VMware is clean.")
break
}
if len(locks) == 1 && strings.HasSuffix(locks[0], ".vmx.lck") {
log.Println("Only waiting on VMX lock. VMware is clean.")
break
}
log.Printf("Waiting on lock files: %#v", locks)
}
select {
case <-timer:
log.Println("Reached timeout on waiting for clean VMware. Assuming clean.")
break LockWaitLoop
case <-time.After(150 * time.Millisecond):
}
}
if runtime.GOOS != "darwin" && !s.Testing {
// Windows takes a while to yield control of the files when the
// process is exiting. Ubuntu will yield control of the files but
// VMWare may overwrite the VMX cleanup steps that run after this,
// so we wait to ensure VMWare has exited and flushed the VMX.
// We just sleep here. In the future, it'd be nice to find a better
// solution to this.
time.Sleep(5 * time.Second)
}
log.Println("VM shut down.")
return multistep.ActionContinue
}
func (s *StepShutdown) Cleanup(state multistep.StateBag) {}