packer-cn/builder/vmware/common/step_output_dir.go

75 lines
1.5 KiB
Go

package common
import (
"fmt"
"log"
"time"
"github.com/mitchellh/multistep"
"github.com/mitchellh/packer/packer"
)
// StepOutputDir sets up the output directory by creating it if it does
// not exist, deleting it if it does exist and we're forcing, and cleaning
// it up when we're done with it.
type StepOutputDir struct {
Force bool
success bool
}
func (s *StepOutputDir) Run(state multistep.StateBag) multistep.StepAction {
dir := state.Get("dir").(OutputDir)
ui := state.Get("ui").(packer.Ui)
exists, err := dir.DirExists()
if err != nil {
state.Put("error", err)
return multistep.ActionHalt
}
if exists {
if s.Force {
ui.Say("Deleting previous output directory...")
dir.RemoveAll()
} else {
state.Put("error", fmt.Errorf(
"Output directory '%s' already exists.", dir.String()))
return multistep.ActionHalt
}
}
if err := dir.MkdirAll(); err != nil {
state.Put("error", err)
return multistep.ActionHalt
}
s.success = true
return multistep.ActionContinue
}
func (s *StepOutputDir) Cleanup(state multistep.StateBag) {
if !s.success {
return
}
_, cancelled := state.GetOk(multistep.StateCancelled)
_, halted := state.GetOk(multistep.StateHalted)
if cancelled || halted {
dir := state.Get("dir").(OutputDir)
ui := state.Get("ui").(packer.Ui)
ui.Say("Deleting output directory...")
for i := 0; i < 5; i++ {
err := dir.RemoveAll()
if err == nil {
break
}
log.Printf("Error removing output dir: %s", err)
time.Sleep(2 * time.Second)
}
}
}