You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
115 lines
3.1 KiB
115 lines
3.1 KiB
package s3
|
|
|
|
import (
|
|
"bytes"
|
|
"encoding/xml"
|
|
"fmt"
|
|
"io"
|
|
"io/ioutil"
|
|
"net/http"
|
|
"strings"
|
|
|
|
"github.com/aws/aws-sdk-go/aws"
|
|
"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"
|
|
)
|
|
|
|
type xmlErrorResponse struct {
|
|
XMLName xml.Name `xml:"Error"`
|
|
Code string `xml:"Code"`
|
|
Message string `xml:"Message"`
|
|
}
|
|
|
|
func unmarshalError(r *request.Request) {
|
|
defer r.HTTPResponse.Body.Close()
|
|
defer io.Copy(ioutil.Discard, r.HTTPResponse.Body)
|
|
|
|
// Bucket exists in a different region, and request needs
|
|
// to be made to the correct region.
|
|
if r.HTTPResponse.StatusCode == http.StatusMovedPermanently {
|
|
msg := fmt.Sprintf(
|
|
"incorrect region, the bucket is not in '%s' region at endpoint '%s'",
|
|
aws.StringValue(r.Config.Region),
|
|
aws.StringValue(r.Config.Endpoint),
|
|
)
|
|
if v := r.HTTPResponse.Header.Get("x-amz-bucket-region"); len(v) != 0 {
|
|
msg += fmt.Sprintf(", bucket is in '%s' region", v)
|
|
}
|
|
r.Error = awserr.NewRequestFailure(
|
|
awserr.New("BucketRegionError", msg, nil),
|
|
r.HTTPResponse.StatusCode,
|
|
r.RequestID,
|
|
)
|
|
return
|
|
}
|
|
|
|
// Attempt to parse error from body if it is known
|
|
var errResp xmlErrorResponse
|
|
var err error
|
|
if r.HTTPResponse.StatusCode >= 200 && r.HTTPResponse.StatusCode < 300 {
|
|
err = s3unmarshalXMLError(&errResp, r.HTTPResponse.Body)
|
|
} else {
|
|
err = xmlutil.UnmarshalXMLError(&errResp, r.HTTPResponse.Body)
|
|
}
|
|
|
|
if err != nil {
|
|
var errorMsg string
|
|
if err == io.EOF {
|
|
errorMsg = "empty response payload"
|
|
} else {
|
|
errorMsg = "failed to unmarshal error message"
|
|
}
|
|
|
|
r.Error = awserr.NewRequestFailure(
|
|
awserr.New(request.ErrCodeSerialization,
|
|
errorMsg, err),
|
|
r.HTTPResponse.StatusCode,
|
|
r.RequestID,
|
|
)
|
|
return
|
|
}
|
|
|
|
// Fallback to status code converted to message if still no error code
|
|
if len(errResp.Code) == 0 {
|
|
statusText := http.StatusText(r.HTTPResponse.StatusCode)
|
|
errResp.Code = strings.Replace(statusText, " ", "", -1)
|
|
errResp.Message = statusText
|
|
}
|
|
|
|
r.Error = awserr.NewRequestFailure(
|
|
awserr.New(errResp.Code, errResp.Message, err),
|
|
r.HTTPResponse.StatusCode,
|
|
r.RequestID,
|
|
)
|
|
}
|
|
|
|
// A RequestFailure provides access to the S3 Request ID and Host ID values
|
|
// returned from API operation errors. Getting the error as a string will
|
|
// return the formated error with the same information as awserr.RequestFailure,
|
|
// while also adding the HostID value from the response.
|
|
type RequestFailure interface {
|
|
awserr.RequestFailure
|
|
|
|
// Host ID is the S3 Host ID needed for debug, and contacting support
|
|
HostID() string
|
|
}
|
|
|
|
// s3unmarshalXMLError is s3 specific xml error unmarshaler
|
|
// for 200 OK errors and response payloads.
|
|
// This function differs from the xmlUtil.UnmarshalXMLError
|
|
// func. It does not ignore the EOF error and passes it up.
|
|
// Related to bug fix for `s3 200 OK response with empty payload`
|
|
func s3unmarshalXMLError(v interface{}, stream io.Reader) error {
|
|
var errBuf bytes.Buffer
|
|
body := io.TeeReader(stream, &errBuf)
|
|
|
|
err := xml.NewDecoder(body).Decode(v)
|
|
if err != nil && err != io.EOF {
|
|
return awserr.NewUnmarshalError(err,
|
|
"failed to unmarshal error message", errBuf.Bytes())
|
|
}
|
|
|
|
return err
|
|
}
|