unmarshal.go 2.5 KB

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  1. package ec2query
  2. //go:generate go run -tags codegen ../../../models/protocol_tests/generate.go ../../../models/protocol_tests/output/ec2.json unmarshal_test.go
  3. import (
  4. "encoding/xml"
  5. "github.com/aws/aws-sdk-go/aws/awserr"
  6. "github.com/aws/aws-sdk-go/aws/request"
  7. "github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
  8. )
  9. // UnmarshalHandler is a named request handler for unmarshaling ec2query protocol requests
  10. var UnmarshalHandler = request.NamedHandler{Name: "awssdk.ec2query.Unmarshal", Fn: Unmarshal}
  11. // UnmarshalMetaHandler is a named request handler for unmarshaling ec2query protocol request metadata
  12. var UnmarshalMetaHandler = request.NamedHandler{Name: "awssdk.ec2query.UnmarshalMeta", Fn: UnmarshalMeta}
  13. // UnmarshalErrorHandler is a named request handler for unmarshaling ec2query protocol request errors
  14. var UnmarshalErrorHandler = request.NamedHandler{Name: "awssdk.ec2query.UnmarshalError", Fn: UnmarshalError}
  15. // Unmarshal unmarshals a response body for the EC2 protocol.
  16. func Unmarshal(r *request.Request) {
  17. defer r.HTTPResponse.Body.Close()
  18. if r.DataFilled() {
  19. decoder := xml.NewDecoder(r.HTTPResponse.Body)
  20. err := xmlutil.UnmarshalXML(r.Data, decoder, "")
  21. if err != nil {
  22. r.Error = awserr.NewRequestFailure(
  23. awserr.New(request.ErrCodeSerialization,
  24. "failed decoding EC2 Query response", err),
  25. r.HTTPResponse.StatusCode,
  26. r.RequestID,
  27. )
  28. return
  29. }
  30. }
  31. }
  32. // UnmarshalMeta unmarshals response headers for the EC2 protocol.
  33. func UnmarshalMeta(r *request.Request) {
  34. r.RequestID = r.HTTPResponse.Header.Get("X-Amzn-Requestid")
  35. if r.RequestID == "" {
  36. // Alternative version of request id in the header
  37. r.RequestID = r.HTTPResponse.Header.Get("X-Amz-Request-Id")
  38. }
  39. }
  40. type xmlErrorResponse struct {
  41. XMLName xml.Name `xml:"Response"`
  42. Code string `xml:"Errors>Error>Code"`
  43. Message string `xml:"Errors>Error>Message"`
  44. RequestID string `xml:"RequestID"`
  45. }
  46. // UnmarshalError unmarshals a response error for the EC2 protocol.
  47. func UnmarshalError(r *request.Request) {
  48. defer r.HTTPResponse.Body.Close()
  49. var respErr xmlErrorResponse
  50. err := xmlutil.UnmarshalXMLError(&respErr, r.HTTPResponse.Body)
  51. if err != nil {
  52. r.Error = awserr.NewRequestFailure(
  53. awserr.New(request.ErrCodeSerialization,
  54. "failed to unmarshal error message", err),
  55. r.HTTPResponse.StatusCode,
  56. r.RequestID,
  57. )
  58. return
  59. }
  60. r.Error = awserr.NewRequestFailure(
  61. awserr.New(respErr.Code, respErr.Message, nil),
  62. r.HTTPResponse.StatusCode,
  63. respErr.RequestID,
  64. )
  65. }