packer-cn/builder/googlecompute/step_wait_instance_startup.go

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package googlecompute
import(
"fmt"
"strings"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
type StepWaitInstanceStartup int
// Run reads the instance serial port output and looks for the log entry indicating the startup script finished.
func (s *StepWaitInstanceStartup) Run(state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
instanceName := state.Get("instance_name").(string)
ui.Say("Waiting for any running startup script to finish...")
// Keep checking the serial port output to see if the startup script is done.
err := Retry(10, 60, 0, func() (bool, error) {
output, err := driver.GetSerialPortOutput(config.Zone, instanceName)
if err != nil {
err := fmt.Errorf("Error getting serial port output: %s", err)
return false, err
}
done := strings.Contains(output, StartupScriptDoneLog)
if !done {
ui.Say("Startup script not finished yet. Waiting...")
}
return done, nil
})
if err != nil {
err := fmt.Errorf("Error waiting for startup script to finish: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
ui.Say("Startup script, if any, has finished running.")
return multistep.ActionContinue
}
// Cleanup.
func (s *StepWaitInstanceStartup) Cleanup(state multistep.StateBag) {}