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