packer-cn/builder/docker/step_pull.go

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package docker
import (
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"log"
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)
type StepPull struct{}
func (s *StepPull) Run(state multistep.StateBag) multistep.StepAction {
config := state.Get("config").(*Config)
driver := state.Get("driver").(Driver)
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ui := state.Get("ui").(packer.Ui)
if !config.Pull {
log.Println("Pull disabled, won't docker pull")
return multistep.ActionContinue
}
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ui.Say(fmt.Sprintf("Pulling Docker image: %s", config.Image))
if err := driver.Pull(config.Image); err != nil {
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err := fmt.Errorf("Error pulling Docker image: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
return multistep.ActionContinue
}
func (s *StepPull) Cleanup(state multistep.StateBag) {
}