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

   1 package terraform
   2
   3 import (
   4         "fmt"
   5
   6         "github.com/hashicorp/terraform/configs/configschema"
   7         "github.com/hashicorp/terraform/provisioners"
   8 )
   9
  10 // EvalInitProvisioner is an EvalNode implementation that initializes a provisioner
  11 // and returns nothing. The provisioner can be retrieved again with the
  12 // EvalGetProvisioner node.
  13 type EvalInitProvisioner struct {
  14         Name string
  15 }
  16
  17 func (n *EvalInitProvisioner) Eval(ctx EvalContext) (interface{}, error) {
  18         return ctx.InitProvisioner(n.Name)
  19 }
  20
  21 // EvalCloseProvisioner is an EvalNode implementation that closes provisioner
  22 // connections that aren't needed anymore.
  23 type EvalCloseProvisioner struct {
  24         Name string
  25 }
  26
  27 func (n *EvalCloseProvisioner) Eval(ctx EvalContext) (interface{}, error) {
  28         ctx.CloseProvisioner(n.Name)
  29         return nil, nil
  30 }
  31
  32 // EvalGetProvisioner is an EvalNode implementation that retrieves an already
  33 // initialized provisioner instance for the given name.
  34 type EvalGetProvisioner struct {
  35         Name   string
  36         Output *provisioners.Interface
  37         Schema **configschema.Block
  38 }
  39
  40 func (n *EvalGetProvisioner) Eval(ctx EvalContext) (interface{}, error) {
  41         result := ctx.Provisioner(n.Name)
  42         if result == nil {
  43                 return nil, fmt.Errorf("provisioner %s not initialized", n.Name)
  44         }
  45
  46         if n.Output != nil {
  47                 *n.Output = result
  48         }
  49
  50         if n.Schema != nil {
  51                 *n.Schema = ctx.ProvisionerSchema(n.Name)
  52         }
  53
  54         return result, nil
  55 }