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

   1 package terraform
   2
   3 import (
   4         "github.com/hashicorp/terraform/configs"
   5         "github.com/hashicorp/terraform/dag"
   6 )
   7
   8 // CountBoundaryTransformer adds a node that depends on everything else
   9 // so that it runs last in order to clean up the state for nodes that
  10 // are on the "count boundary": "foo.0" when only one exists becomes "foo"
  11 type CountBoundaryTransformer struct {
  12         Config *configs.Config
  13 }
  14
  15 func (t *CountBoundaryTransformer) Transform(g *Graph) error {
  16         node := &NodeCountBoundary{
  17                 Config: t.Config,
  18         }
  19         g.Add(node)
  20
  21         // Depends on everything
  22         for _, v := range g.Vertices() {
  23                 // Don't connect to ourselves
  24                 if v == node {
  25                         continue
  26                 }
  27
  28                 // Connect!
  29                 g.Connect(dag.BasicEdge(node, v))
  30         }
  31
  32         return nil
  33 }