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package googlecompute
import (
"context"
"errors"
"fmt"
"time"
"github.com/hashicorp/packer/packer-plugin-sdk/multistep"
packersdk "github.com/hashicorp/packer/packer-plugin-sdk/packer"
"github.com/hashicorp/packer/packer-plugin-sdk/retry"
)
type StepWaitStartupScript int
// Run reads the instance metadata and looks for the log entry
// indicating the startup script finished.
func (s *StepWaitStartupScript) Run(ctx context.Context, state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
driver := state.Get("driver").(Driver)
ui := state.Get("ui").(packersdk.Ui)
instanceName := state.Get("instance_name").(string)
if config.WrapStartupScriptFile.False() {
return multistep.ActionContinue
}
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.Config{
ShouldRetry: func(error) bool {
return true
},
RetryDelay: (&retry.Backoff{InitialBackoff: 10 * time.Second, MaxBackoff: 60 * time.Second, Multiplier: 2}).Linear,
}.Run(ctx, func(ctx context.Context) error {
status, err := driver.GetInstanceMetadata(config.Zone,
instanceName, StartupScriptStatusKey)
if err != nil {
err := fmt.Errorf("Error getting startup script status: %s", err)
return err
}
if status == StartupScriptStatusError {
err = errors.New("Startup script error.")
return err
}
done := status == StartupScriptStatusDone
if !done {
ui.Say("Startup script not finished yet. Waiting...")
return errors.New("Startup script not done.")
}
return 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 *StepWaitStartupScript) Cleanup(state multistep.StateBag) {}
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