/
step_create_snapshot.go
73 lines (64 loc) · 2.16 KB
/
step_create_snapshot.go
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package vm
import (
"context"
"fmt"
"log"
"github.com/hashicorp/packer-plugin-sdk/multistep"
packersdk "github.com/hashicorp/packer-plugin-sdk/packer"
vboxcommon "github.com/hashicorp/packer/builder/virtualbox/common"
)
type StepCreateSnapshot struct {
Name string
TargetSnapshot string
}
func (s *StepCreateSnapshot) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
driver := state.Get("driver").(vboxcommon.Driver)
ui := state.Get("ui").(packersdk.Ui)
if s.TargetSnapshot != "" {
running, err := driver.IsRunning(s.Name)
if err != nil {
err = fmt.Errorf("Failed to test if VM %s is still running: %s", s.Name, err)
} else if running {
err = fmt.Errorf("VM %s is still running. Unable to create snapshot %s", s.Name, s.TargetSnapshot)
}
if err != nil {
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
ui.Say(fmt.Sprintf("Creating snapshot %s on virtual machine %s", s.TargetSnapshot, s.Name))
snapshotTree, err := driver.LoadSnapshots(s.Name)
if err != nil {
err = fmt.Errorf("Failed to load snapshots for VM %s: %s", s.Name, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Remove any snapshot with the target's name, if present.
if snapshotTree != nil {
currentSnapshot := snapshotTree.GetCurrentSnapshot()
targetSnapshot := currentSnapshot.GetChildWithName(s.TargetSnapshot)
if nil != targetSnapshot {
log.Printf("Deleting existing target snapshot %s", s.TargetSnapshot)
err = driver.DeleteSnapshot(s.Name, targetSnapshot)
if nil != err {
err = fmt.Errorf("Unable to delete snapshot %s from VM %s: %s", s.TargetSnapshot, s.Name, err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
}
}
err = driver.CreateSnapshot(s.Name, s.TargetSnapshot)
if err != nil {
err := fmt.Errorf("Error creating snaphot VM: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
} else {
ui.Say("No target snapshot defined...")
}
return multistep.ActionContinue
}
func (s *StepCreateSnapshot) Cleanup(state multistep.StateBag) {}