91 lines
2.8 KiB
Go
91 lines
2.8 KiB
Go
package vm
|
|
|
|
import (
|
|
"context"
|
|
"fmt"
|
|
|
|
vboxcommon "github.com/hashicorp/packer/builder/virtualbox/common"
|
|
"github.com/hashicorp/packer/helper/multistep"
|
|
"github.com/hashicorp/packer/packer"
|
|
)
|
|
|
|
type StepSetSnapshot struct {
|
|
Name string
|
|
AttachSnapshot string
|
|
KeepRegistered bool
|
|
revertToSnapshot string
|
|
}
|
|
|
|
func (s *StepSetSnapshot) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
|
|
driver := state.Get("driver").(vboxcommon.Driver)
|
|
ui := state.Get("ui").(packer.Ui)
|
|
snapshotTree, err := driver.LoadSnapshots(s.Name)
|
|
if err != nil {
|
|
err := fmt.Errorf("Error loading snapshots for VM: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
|
|
if s.AttachSnapshot != "" {
|
|
if nil == snapshotTree {
|
|
err := fmt.Errorf("Unable to attach snapshot on VM %s when no snapshots exist", s.Name)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
currentSnapshot := snapshotTree.GetCurrentSnapshot()
|
|
s.revertToSnapshot = currentSnapshot.UUID
|
|
ui.Say(fmt.Sprintf("Attaching snapshot %s on virtual machine %s", s.AttachSnapshot, s.Name))
|
|
candidateSnapshots := snapshotTree.GetSnapshotsByName(s.AttachSnapshot)
|
|
if 0 >= len(candidateSnapshots) {
|
|
err := fmt.Errorf("Snapshot %s not found on VM %s", s.AttachSnapshot, s.Name)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
} else if 1 > len(candidateSnapshots) {
|
|
err := fmt.Errorf("More than one Snapshot %s found on VM %s", s.AttachSnapshot, s.Name)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
} else {
|
|
err = driver.SetSnapshot(s.Name, candidateSnapshots[0])
|
|
if err != nil {
|
|
err := fmt.Errorf("Unable to set snapshot for VM: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return multistep.ActionHalt
|
|
}
|
|
}
|
|
}
|
|
return multistep.ActionContinue
|
|
}
|
|
|
|
func (s *StepSetSnapshot) Cleanup(state multistep.StateBag) {
|
|
driver := state.Get("driver").(vboxcommon.Driver)
|
|
if s.revertToSnapshot != "" {
|
|
ui := state.Get("ui").(packer.Ui)
|
|
if s.KeepRegistered {
|
|
ui.Say("Keeping virtual machine state (keep_registered = true)")
|
|
return
|
|
} else {
|
|
ui.Say(fmt.Sprintf("Reverting to snapshot %s on virtual machine %s", s.revertToSnapshot, s.Name))
|
|
snapshotTree, err := driver.LoadSnapshots(s.Name)
|
|
revertTo := snapshotTree.GetSnapshotByUUID(s.revertToSnapshot)
|
|
if nil == revertTo {
|
|
err := fmt.Errorf("Snapshot with UUID %s not found for VM %s", s.revertToSnapshot, s.Name)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return
|
|
}
|
|
err = driver.SetSnapshot(s.Name, revertTo)
|
|
if err != nil {
|
|
err := fmt.Errorf("Unable to set snapshot for VM: %s", err)
|
|
state.Put("error", err)
|
|
ui.Error(err.Error())
|
|
return
|
|
}
|
|
}
|
|
}
|
|
}
|