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

   1 package terraform
   2
   3 import (
   4         "fmt"
   5         "strings"
   6 )
   7
   8 // ImportProviderValidateTransformer is a GraphTransformer that goes through
   9 // the providers in the graph and validates that they only depend on variables.
  10 type ImportProviderValidateTransformer struct{}
  11
  12 func (t *ImportProviderValidateTransformer) Transform(g *Graph) error {
  13         for _, v := range g.Vertices() {
  14                 // We only care about providers
  15                 pv, ok := v.(GraphNodeProvider)
  16                 if !ok {
  17                         continue
  18                 }
  19
  20                 // We only care about providers that reference things
  21                 rn, ok := pv.(GraphNodeReferencer)
  22                 if !ok {
  23                         continue
  24                 }
  25
  26                 for _, ref := range rn.References() {
  27                         if !strings.HasPrefix(ref, "var.") {
  28                                 return fmt.Errorf(
  29                                         "Provider %q depends on non-var %q. Providers for import can currently\n"+
  30                                                 "only depend on variables or must be hardcoded. You can stop import\n"+
  31                                                 "from loading configurations by specifying `-config=\"\"`.",
  32                                         pv.ProviderName(), ref)
  33                         }
  34                 }
  35         }
  36
  37         return nil
  38 }