packer-cn/builder/digitalocean/step_snapshot.go

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package digitalocean
import (
"errors"
"fmt"
"log"
"time"
"github.com/digitalocean/godo"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
type stepSnapshot struct{}
func (s *stepSnapshot) Run(state multistep.StateBag) multistep.StepAction {
client := state.Get("client").(*godo.Client)
ui := state.Get("ui").(packer.Ui)
c := state.Get("config").(Config)
dropletId := state.Get("droplet_id").(int)
ui.Say(fmt.Sprintf("Creating snapshot: %v", c.SnapshotName))
_, _, err := client.DropletActions.Snapshot(dropletId, c.SnapshotName)
if err != nil {
err := fmt.Errorf("Error creating snapshot: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// Wait for the droplet to become unlocked first. For snapshots
// this can end up taking quite a long time, so we hardcode this to
// 10 minutes.
if err := waitForDropletUnlocked(client, dropletId, 10*time.Minute); err != nil {
// If we get an error the first time, actually report it
err := fmt.Errorf("Error shutting down droplet: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
// With the pending state over, verify that we're in the active state
ui.Say("Waiting for snapshot to complete...")
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err = waitForDropletState("active", dropletId, client, c.StateTimeout)
if err != nil {
err := fmt.Errorf("Error waiting for snapshot to complete: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
log.Printf("Looking up snapshot ID for snapshot: %s", c.SnapshotName)
images, _, err := client.Images.ListUser(&godo.ListOptions{PerPage: 200})
if err != nil {
err := fmt.Errorf("Error looking up snapshot ID: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
var imageId int
for _, image := range images {
if image.Name == c.SnapshotName {
imageId = image.ID
break
}
}
if imageId == 0 {
err := errors.New("Couldn't find snapshot to get the image ID. Bug?")
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
log.Printf("Snapshot image ID: %d", imageId)
state.Put("snapshot_image_id", imageId)
state.Put("snapshot_name", c.SnapshotName)
state.Put("region", c.Region)
return multistep.ActionContinue
}
func (s *stepSnapshot) Cleanup(state multistep.StateBag) {
// no cleanup
}