126 lines
3.7 KiB
Go
126 lines
3.7 KiB
Go
package digitalocean
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import (
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"context"
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"errors"
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"fmt"
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"log"
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"time"
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"github.com/digitalocean/godo"
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"github.com/hashicorp/packer/packer"
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"github.com/mitchellh/multistep"
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)
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type stepSnapshot struct{}
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func (s *stepSnapshot) Run(state multistep.StateBag) multistep.StepAction {
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client := state.Get("client").(*godo.Client)
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ui := state.Get("ui").(packer.Ui)
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c := state.Get("config").(Config)
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dropletId := state.Get("droplet_id").(int)
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var snapshotRegions []string
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ui.Say(fmt.Sprintf("Creating snapshot: %v", c.SnapshotName))
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action, _, err := client.DropletActions.Snapshot(context.TODO(), dropletId, c.SnapshotName)
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if err != nil {
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err := fmt.Errorf("Error creating snapshot: %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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// With the pending state over, verify that we're in the active state
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ui.Say("Waiting for snapshot to complete...")
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if err := waitForActionState(godo.ActionCompleted, dropletId, action.ID,
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client, 20*time.Minute); err != nil {
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// If we get an error the first time, actually report it
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err := fmt.Errorf("Error waiting for snapshot: %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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// Wait for the droplet to become unlocked first. For snapshots
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// this can end up taking quite a long time, so we hardcode this to
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// 20 minutes.
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if err := waitForDropletUnlocked(client, dropletId, 20*time.Minute); err != nil {
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// If we get an error the first time, actually report it
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err := fmt.Errorf("Error shutting down droplet: %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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log.Printf("Looking up snapshot ID for snapshot: %s", c.SnapshotName)
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images, _, err := client.Droplets.Snapshots(context.TODO(), dropletId, nil)
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if err != nil {
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err := fmt.Errorf("Error looking up snapshot ID: %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 len(c.SnapshotRegions) > 0 {
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regionSet := make(map[string]struct{})
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regions := make([]string, 0, len(c.SnapshotRegions))
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regionSet[c.Region] = struct{}{}
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for _, region := range c.SnapshotRegions {
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// If we already saw the region, then don't look again
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if _, ok := regionSet[region]; ok {
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continue
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}
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// Mark that we saw the region
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regionSet[region] = struct{}{}
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regions = append(regions, region)
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}
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snapshotRegions = regions
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for transfer := range snapshotRegions {
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transferRequest := &godo.ActionRequest{
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"type": "transfer",
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"region": snapshotRegions[transfer],
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}
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imageTransfer, _, err := client.ImageActions.Transfer(context.TODO(), images[0].ID, transferRequest)
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if err != nil {
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err := fmt.Errorf("Error transferring snapshot: %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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ui.Say(fmt.Sprintf("transferring Snapshot ID: %d", imageTransfer.ID))
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if err := waitForImageState(godo.ActionCompleted, imageTransfer.ID, action.ID,
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client, 20*time.Minute); err != nil {
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// If we get an error the first time, actually report it
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err := fmt.Errorf("Error waiting for snapshot transfer: %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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var imageId int
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if len(images) == 1 {
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imageId = images[0].ID
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} else {
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err := errors.New("Couldn't find snapshot to get the image ID. Bug?")
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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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log.Printf("Snapshot image ID: %d", imageId)
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state.Put("snapshot_image_id", imageId)
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state.Put("snapshot_name", c.SnapshotName)
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state.Put("regions", snapshotRegions)
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return multistep.ActionContinue
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}
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func (s *stepSnapshot) Cleanup(state multistep.StateBag) {
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// no cleanup
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}
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