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

   1 package terraform
   2
   3 import (
   4         "log"
   5
   6         "github.com/hashicorp/terraform/config"
   7         "github.com/hashicorp/terraform/config/module"
   8 )
   9
  10 // OrphanOutputTransformer finds the outputs that aren't present
  11 // in the given config that are in the state and adds them to the graph
  12 // for deletion.
  13 type OrphanOutputTransformer struct {
  14         Module *module.Tree // Root module
  15         State  *State       // State is the root state
  16 }
  17
  18 func (t *OrphanOutputTransformer) Transform(g *Graph) error {
  19         if t.State == nil {
  20                 log.Printf("[DEBUG] No state, no orphan outputs")
  21                 return nil
  22         }
  23
  24         for _, ms := range t.State.Modules {
  25                 if err := t.transform(g, ms); err != nil {
  26                         return err
  27                 }
  28         }
  29         return nil
  30 }
  31
  32 func (t *OrphanOutputTransformer) transform(g *Graph, ms *ModuleState) error {
  33         if ms == nil {
  34                 return nil
  35         }
  36
  37         path := normalizeModulePath(ms.Path)
  38
  39         // Get the config for this path, which is nil if the entire module has been
  40         // removed.
  41         var c *config.Config
  42         if m := t.Module.Child(path[1:]); m != nil {
  43                 c = m.Config()
  44         }
  45
  46         // add all the orphaned outputs to the graph
  47         for _, n := range ms.RemovedOutputs(c) {
  48                 g.Add(&NodeOutputOrphan{OutputName: n, PathValue: path})
  49
  50         }
  51
  52         return nil
  53 }