vendor/github.com/hashicorp/terraform/states/statefile/version3.go

   1 package statefile
   2
   3 import (
   4         "encoding/json"
   5         "fmt"
   6
   7         "github.com/hashicorp/terraform/tfdiags"
   8 )
   9
  10 func readStateV3(src []byte) (*File, tfdiags.Diagnostics) {
  11         var diags tfdiags.Diagnostics
  12         sV3 := &stateV3{}
  13         err := json.Unmarshal(src, sV3)
  14         if err != nil {
  15                 diags = diags.Append(jsonUnmarshalDiags(err))
  16                 return nil, diags
  17         }
  18
  19         file, prepDiags := prepareStateV3(sV3)
  20         diags = diags.Append(prepDiags)
  21         return file, diags
  22 }
  23
  24 func prepareStateV3(sV3 *stateV3) (*File, tfdiags.Diagnostics) {
  25         var diags tfdiags.Diagnostics
  26         sV4, err := upgradeStateV3ToV4(sV3)
  27         if err != nil {
  28                 diags = diags.Append(tfdiags.Sourceless(
  29                         tfdiags.Error,
  30                         upgradeFailed,
  31                         fmt.Sprintf("Error upgrading state file format from version 3 to version 4: %s.", err),
  32                 ))
  33                 return nil, diags
  34         }
  35
  36         file, prepDiags := prepareStateV4(sV4)
  37         diags = diags.Append(prepDiags)
  38         return file, diags
  39 }
  40
  41 // stateV2 is a representation of the legacy JSON state format version 3.
  42 //
  43 // It is only used to read version 3 JSON files prior to upgrading them to
  44 // the current format.
  45 //
  46 // The differences between version 2 and version 3 are only in the data and
  47 // not in the structure, so stateV3 actually shares the same structs as
  48 // stateV2. Type stateV3 represents that the data within is formatted as
  49 // expected by the V3 format, rather than the V2 format.
  50 type stateV3 stateV2