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package query
import (
"encoding/xml"
"fmt"
"strings"
"github.com/aws/aws-sdk-go/aws/awserr"
"github.com/aws/aws-sdk-go/aws/request"
"github.com/aws/aws-sdk-go/private/protocol/xml/xmlutil"
)
// UnmarshalErrorHandler is a name request handler to unmarshal request errors
var UnmarshalErrorHandler = request.NamedHandler{Name: "awssdk.query.UnmarshalError", Fn: UnmarshalError}
type xmlErrorResponse struct {
Code string `xml:"Error>Code"`
Message string `xml:"Error>Message"`
RequestID string `xml:"RequestId"`
}
type xmlResponseError struct {
xmlErrorResponse
}
func (e *xmlResponseError) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
const svcUnavailableTagName = "ServiceUnavailableException"
const errorResponseTagName = "ErrorResponse"
switch start.Name.Local {
case svcUnavailableTagName:
e.Code = svcUnavailableTagName
e.Message = "service is unavailable"
return d.Skip()
case errorResponseTagName:
return d.DecodeElement(&e.xmlErrorResponse, &start)
default:
return fmt.Errorf("unknown error response tag, %v", start)
}
}
// UnmarshalError unmarshals an error response for an AWS Query service.
func UnmarshalError(r *request.Request) {
defer r.HTTPResponse.Body.Close()
var respErr xmlResponseError
err := xmlutil.UnmarshalXMLError(&respErr, r.HTTPResponse.Body)
if err != nil {
r.Error = awserr.NewRequestFailure(
awserr.New(request.ErrCodeSerialization,
"failed to unmarshal error message", err),
r.HTTPResponse.StatusCode,
r.RequestID,
)
return
}
reqID := respErr.RequestID
if len(reqID) == 0 {
reqID = r.RequestID
}
r.Error = awserr.NewRequestFailure(
awserr.New(strings.TrimSpace(respErr.Code), strings.TrimSpace(respErr.Message), nil),
r.HTTPResponse.StatusCode,
reqID,
)
}
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