filer: add back isAppend function

1 files changed, 2 insertions, 3 deletions

diff --git a/weed/server/filer_server_handlers_write_upload.go b/weed/server/filer_server_handlers_write_upload.go
index 294a97582..f09581453 100644
--- a/weed/server/filer_server_handlers_write_upload.go
+++ b/weed/server/filer_server_handlers_write_upload.go
@@ -31,7 +31,6 @@ var bufPool = sync.Pool{
 
 func (fs *FilerServer) uploadReaderToChunks(w http.ResponseWriter, r *http.Request, reader io.Reader, chunkSize int32, fileName, contentType string, contentLength int64, so *operation.StorageOption) (fileChunks []*filer_pb.FileChunk, md5Hash hash.Hash, chunkOffset int64, uploadErr error, smallContent []byte) {
 	query := r.URL.Query()
-	isAppend := query.Get("op") == "append"
 
 	if query.Has("offset") {
 		offset := query.Get("offset")
@@ -40,7 +39,7 @@ func (fs *FilerServer) uploadReaderToChunks(w http.ResponseWriter, r *http.Reque
 			err = fmt.Errorf("invalid 'offset': '%s'", offset)
 			return nil, nil, 0, err, nil
 		}
-		if isAppend && offsetInt > 0 {
+		if isAppend(r) && offsetInt > 0 {
 			err = fmt.Errorf("cannot set offset when op=append")
 			return nil, nil, 0, err, nil
 		}
@@ -81,7 +80,7 @@ func (fs *FilerServer) uploadReaderToChunks(w http.ResponseWriter, r *http.Reque
 			bytesBufferLimitCond.Signal()
 			break
 		}
-		if chunkOffset == 0 && !isAppend {
+		if chunkOffset == 0 && !isAppend(r) {
 			if dataSize < fs.option.SaveToFilerLimit || strings.HasPrefix(r.URL.Path, filer.DirectoryEtcRoot) {
 				chunkOffset += dataSize
 				smallContent = make([]byte, dataSize)