package googlecompute import ( "fmt" "path/filepath" "github.com/mitchellh/multistep" "github.com/mitchellh/packer/packer" ) // StepCreateImage represents a Packer build step that creates GCE machine // images. type StepCreateImage int // Run executes the Packer build step that creates a GCE machine image. // // Currently the only way to create a GCE image is to run the gcimagebundle // command on the running GCE instance. func (s *StepCreateImage) Run(state multistep.StateBag) multistep.StepAction { config := state.Get("config").(*Config) comm := state.Get("communicator").(packer.Communicator) ui := state.Get("ui").(packer.Ui) sudoPrefix := "" if config.SSHUsername != "root" { sudoPrefix = "sudo " } imageFilename := fmt.Sprintf("%s.tar.gz", config.ImageName) imageBundleCmd := "/usr/bin/gcimagebundle -d /dev/sda -o /tmp/" ui.Say("Creating image...") cmd := new(packer.RemoteCmd) cmd.Command = fmt.Sprintf("%s%s --output_file_name %s", sudoPrefix, imageBundleCmd, imageFilename) err := cmd.StartWithUi(comm, ui) if err == nil && cmd.ExitStatus != 0 { err = fmt.Errorf( "gcimagebundle exited with non-zero exit status: %d", cmd.ExitStatus) } if err != nil { err := fmt.Errorf("Error creating image: %s", err) state.Put("error", err) ui.Error(err.Error()) return multistep.ActionHalt } state.Put("image_file_name", filepath.Join("/tmp", imageFilename)) return multistep.ActionContinue } func (s *StepCreateImage) Cleanup(state multistep.StateBag) {}