command: concurrent UI

This commit is contained in:
Mitchell Hashimoto 2014-06-26 22:01:05 -07:00
parent 23de2fc2f3
commit d3f2547f86
1 changed files with 16 additions and 2 deletions

View File

@ -2,6 +2,7 @@ package command
import (
"fmt"
"sync"
"github.com/hashicorp/terraform/terraform"
"github.com/mitchellh/cli"
@ -11,16 +12,29 @@ type UiHook struct {
terraform.NilHook
Ui cli.Ui
once sync.Once
ui cli.Ui
}
func (h *UiHook) PreDiff(
id string, s *terraform.ResourceState) (terraform.HookAction, error) {
h.Ui.Output(fmt.Sprintf("Calculating diff for %s", id))
h.once.Do(h.init)
h.ui.Output(fmt.Sprintf("%s: Calculating diff", id))
return terraform.HookActionContinue, nil
}
func (h *UiHook) PreRefresh(
id string, s *terraform.ResourceState) (terraform.HookAction, error) {
h.Ui.Output(fmt.Sprintf("Refreshing state for %s (ID: %s)", id, s.ID))
h.once.Do(h.init)
h.ui.Output(fmt.Sprintf("%s: Refreshing state (ID: %s)", id, s.ID))
return terraform.HookActionContinue, nil
}
func (h *UiHook) init() {
// Wrap the ui so that it is safe for concurrency regardless of the
// underlying reader/writer that is in place.
h.ui = &cli.ConcurrentUi{Ui: h.Ui}
}