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

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