vendor/github.com/hashicorp/terraform/terraform/eval_check_prevent_destroy.go

   1 package terraform
   2
   3 import (
   4         "fmt"
   5
   6         "github.com/hashicorp/terraform/config"
   7 )
   8
   9 // EvalPreventDestroy is an EvalNode implementation that returns an
  10 // error if a resource has PreventDestroy configured and the diff
  11 // would destroy the resource.
  12 type EvalCheckPreventDestroy struct {
  13         Resource   *config.Resource
  14         ResourceId string
  15         Diff       **InstanceDiff
  16 }
  17
  18 func (n *EvalCheckPreventDestroy) Eval(ctx EvalContext) (interface{}, error) {
  19         if n.Diff == nil || *n.Diff == nil || n.Resource == nil {
  20                 return nil, nil
  21         }
  22
  23         diff := *n.Diff
  24         preventDestroy := n.Resource.Lifecycle.PreventDestroy
  25
  26         if diff.GetDestroy() && preventDestroy {
  27                 resourceId := n.ResourceId
  28                 if resourceId == "" {
  29                         resourceId = n.Resource.Id()
  30                 }
  31
  32                 return nil, fmt.Errorf(preventDestroyErrStr, resourceId)
  33         }
  34
  35         return nil, nil
  36 }
  37
  38 const preventDestroyErrStr = `%s: the plan would destroy this resource, but it currently has lifecycle.prevent_destroy set to true. To avoid this error and continue with the plan, either disable lifecycle.prevent_destroy or adjust the scope of the plan using the -target flag.`