91 lines
2.4 KiB
Go
91 lines
2.4 KiB
Go
package digitalocean
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import (
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"context"
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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 stepShutdown struct{}
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func (s *stepShutdown) Run(state multistep.StateBag) multistep.StepAction {
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client := state.Get("client").(*godo.Client)
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c := state.Get("config").(Config)
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ui := state.Get("ui").(packer.Ui)
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dropletId := state.Get("droplet_id").(int)
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// Gracefully power off the droplet. We have to retry this a number
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// of times because sometimes it says it completed when it actually
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// did absolutely nothing (*ALAKAZAM!* magic!). We give up after
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// a pretty arbitrary amount of time.
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ui.Say("Gracefully shutting down droplet...")
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_, _, err := client.DropletActions.Shutdown(context.TODO(), dropletId)
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if 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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// A channel we use as a flag to end our goroutines
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done := make(chan struct{})
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shutdownRetryDone := make(chan struct{})
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// Make sure we wait for the shutdown retry goroutine to end
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// before moving on.
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defer func() {
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close(done)
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<-shutdownRetryDone
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}()
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// Start a goroutine that just keeps trying to shut down the
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// droplet.
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go func() {
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defer close(shutdownRetryDone)
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for attempts := 2; attempts > 0; attempts++ {
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log.Printf("ShutdownDroplet attempt #%d...", attempts)
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_, _, err := client.DropletActions.Shutdown(context.TODO(), dropletId)
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if err != nil {
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log.Printf("Shutdown retry error: %s", err)
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}
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select {
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case <-done:
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return
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case <-time.After(20 * time.Second):
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// Retry!
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}
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}
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}()
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err = waitForDropletState("off", dropletId, client, c.StateTimeout)
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if 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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if err := waitForDropletUnlocked(client, dropletId, c.StateTimeout); 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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return multistep.ActionContinue
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}
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func (s *stepShutdown) Cleanup(state multistep.StateBag) {
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// no cleanup
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}
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