packer-cn/builder/googlecompute/step_check_existing_image.go

35 lines
1.0 KiB
Go

package googlecompute
import (
"context"
"fmt"
"github.com/hashicorp/packer/helper/multistep"
"github.com/hashicorp/packer/packer"
)
// StepCheckExistingImage represents a Packer build step that checks if the
// target image already exists, and aborts immediately if so.
type StepCheckExistingImage int
// Run executes the Packer build step that checks if the image already exists.
func (s *StepCheckExistingImage) Run(_ context.Context, state multistep.StateBag) multistep.StepAction {
c := state.Get("config").(*Config)
d := state.Get("driver").(Driver)
ui := state.Get("ui").(packer.Ui)
ui.Say("Checking image does not exist...")
c.imageAlreadyExists = d.ImageExists(c.ImageName)
if !c.PackerForce && c.imageAlreadyExists {
err := fmt.Errorf("Image %s already exists.\n"+
"Use the force flag to delete it prior to building.", c.ImageName)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
return multistep.ActionContinue
}
// Cleanup.
func (s *StepCheckExistingImage) Cleanup(state multistep.StateBag) {}