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package docker
import (
"fmt"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
"io/ioutil"
"os"
)
// StepTempDir creates a temporary directory that we use in order to
// share data with the docker container over the communicator.
type StepTempDir struct {
tempDir string
}
func (s *StepTempDir) Run(state multistep.StateBag) multistep.StepAction {
ui := state.Get("ui").(packer.Ui)
ui.Say("Creating a temporary directory for sharing data...")
var err error
var tempdir string
configTmpDir, err := packer.ConfigTmpDir()
if err == nil {
tempdir, err = ioutil.TempDir(configTmpDir, "packer-docker")
}
if err != nil {
err := fmt.Errorf("Error making temp dir: %s", err)
state.Put("error", err)
ui.Error(err.Error())
return multistep.ActionHalt
}
s.tempDir = tempdir
state.Put("temp_dir", s.tempDir)
return multistep.ActionContinue
}
func (s *StepTempDir) Cleanup(state multistep.StateBag) {
if s.tempDir != "" {
os.RemoveAll(s.tempDir)
}
}
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