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minio/cmd/api-response-multipart.go

60 lines
2.2 KiB

/*
* Minio Cloud Storage, (C) 2016 Minio, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package cmd
import (
"context"
"net/http"
)
// Represents additional fields necessary for ErrPartTooSmall S3 error.
type completeMultipartAPIError struct {
// Proposed size represents uploaded size of the part.
ProposedSize int64
// Minimum size allowed epresents the minimum size allowed per
// part. Defaults to 5MB.
MinSizeAllowed int64
// Part number of the part which is incorrect.
PartNumber int
// ETag of the part which is incorrect.
PartETag string
// Other default XML error responses.
APIErrorResponse
}
// writeErrorResponsePartTooSmall - function is used specifically to
// construct a proper error response during CompleteMultipartUpload
// when one of the parts is < 5MB.
// The requirement comes due to the fact that generic ErrorResponse
// XML doesn't carry the additional fields required to send this
// error. So we construct a new type which lies well within the scope
// of this function.
func writePartSmallErrorResponse(ctx context.Context, w http.ResponseWriter, r *http.Request, err PartTooSmall) {
apiError := toAPIError(ctx, err)
// Generate complete multipart error response.
errorResponse := getAPIErrorResponse(ctx, apiError, r.URL.Path,
w.Header().Get(responseRequestIDKey),
w.Header().Get(responseDeploymentIDKey))
cmpErrResp := completeMultipartAPIError{err.PartSize, int64(5242880), err.PartNumber, err.PartETag, errorResponse}
encodedErrorResponse := encodeResponse(cmpErrResp)
// respond with 400 bad request.
w.WriteHeader(apiError.HTTPStatusCode)
// Write error body.
w.Write(encodedErrorResponse)
w.(http.Flusher).Flush()
}