95 lines
2.5 KiB
Go
95 lines
2.5 KiB
Go
package qemu
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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/hashicorp/packer/helper/communicator"
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"github.com/hashicorp/packer/packer"
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"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
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)
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// This step shuts down the machine. It first attempts to do so gracefully,
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// but ultimately forcefully shuts it down if that fails.
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//
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// Uses:
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// communicator packer.Communicator
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// config *config
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// driver Driver
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// ui packer.Ui
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//
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// Produces:
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// <nothing>
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type stepShutdown struct {
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ShutdownCommand string
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ShutdownTimeout time.Duration
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Comm *communicator.Config
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}
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func (s *stepShutdown) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
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driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packer.Ui)
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if s.Comm.Type == "none" {
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cancelCh := make(chan struct{}, 1)
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go func() {
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defer close(cancelCh)
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<-time.After(s.ShutdownTimeout)
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}()
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ui.Say("Waiting for shutdown...")
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if ok := driver.WaitForShutdown(cancelCh); ok {
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log.Println("VM shut down.")
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return multistep.ActionContinue
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} else {
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err := fmt.Errorf("Failed to shutdown")
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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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if s.ShutdownCommand != "" {
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comm := state.Get("communicator").(packer.Communicator)
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ui.Say("Gracefully halting virtual machine...")
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log.Printf("Executing shutdown command: %s", s.ShutdownCommand)
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cmd := &packer.RemoteCmd{Command: s.ShutdownCommand}
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if err := cmd.RunWithUi(ctx, comm, ui); err != nil {
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err := fmt.Errorf("Failed to send shutdown command: %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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// Start the goroutine that will time out our graceful attempt
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cancelCh := make(chan struct{}, 1)
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go func() {
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defer close(cancelCh)
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<-time.After(s.ShutdownTimeout)
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}()
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log.Printf("Waiting max %s for shutdown to complete", s.ShutdownTimeout)
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if ok := driver.WaitForShutdown(cancelCh); !ok {
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err := errors.New("Timeout while waiting for machine to shut down.")
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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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} else {
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ui.Say("Halting the virtual machine...")
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if err := driver.Stop(); err != nil {
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err := fmt.Errorf("Error stopping 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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log.Println("VM shut down.")
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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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