package weed_server import ( "bytes" "io" "io/ioutil" "net/http" "path" "strconv" "time" "github.com/chrislusf/seaweedfs/weed/filer2" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" ) func (fs *FilerServer) autoChunk(w http.ResponseWriter, r *http.Request, replication string, collection string) bool { if r.Method != "POST" { glog.V(4).Infoln("AutoChunking not supported for method", r.Method) return false } // autoChunking can be set at the command-line level or as a query param. Query param overrides command-line query := r.URL.Query() parsedMaxMB, _ := strconv.ParseInt(query.Get("maxMB"), 10, 32) maxMB := int32(parsedMaxMB) if maxMB <= 0 && fs.maxMB > 0 { maxMB = int32(fs.maxMB) } if maxMB <= 0 { glog.V(4).Infoln("AutoChunking not enabled") return false } glog.V(4).Infoln("AutoChunking level set to", maxMB, "(MB)") chunkSize := 1024 * 1024 * maxMB contentLength := int64(0) if contentLengthHeader := r.Header["Content-Length"]; len(contentLengthHeader) == 1 { contentLength, _ = strconv.ParseInt(contentLengthHeader[0], 10, 64) if contentLength <= int64(chunkSize) { glog.V(4).Infoln("Content-Length of", contentLength, "is less than the chunk size of", chunkSize, "so autoChunking will be skipped.") return false } } if contentLength <= 0 { glog.V(4).Infoln("Content-Length value is missing or unexpected so autoChunking will be skipped.") return false } reply, err := fs.doAutoChunk(w, r, contentLength, chunkSize, replication, collection) if err != nil { writeJsonError(w, r, http.StatusInternalServerError, err) } else if reply != nil { writeJsonQuiet(w, r, http.StatusCreated, reply) } return true } func (fs *FilerServer) doAutoChunk(w http.ResponseWriter, r *http.Request, contentLength int64, chunkSize int32, replication string, collection string) (filerResult *FilerPostResult, replyerr error) { multipartReader, multipartReaderErr := r.MultipartReader() if multipartReaderErr != nil { return nil, multipartReaderErr } part1, part1Err := multipartReader.NextPart() if part1Err != nil { return nil, part1Err } fileName := part1.FileName() if fileName != "" { fileName = path.Base(fileName) } var fileChunks []*filer_pb.FileChunk totalBytesRead := int64(0) tmpBufferSize := int32(1024 * 1024) tmpBuffer := bytes.NewBuffer(make([]byte, 0, tmpBufferSize)) chunkBuf := make([]byte, chunkSize+tmpBufferSize, chunkSize+tmpBufferSize) // chunk size plus a little overflow chunkBufOffset := int32(0) chunkOffset := int64(0) writtenChunks := 0 filerResult = &FilerPostResult{ Name: fileName, } for totalBytesRead < contentLength { tmpBuffer.Reset() bytesRead, readErr := io.CopyN(tmpBuffer, part1, int64(tmpBufferSize)) readFully := readErr != nil && readErr == io.EOF tmpBuf := tmpBuffer.Bytes() bytesToCopy := tmpBuf[0:int(bytesRead)] copy(chunkBuf[chunkBufOffset:chunkBufOffset+int32(bytesRead)], bytesToCopy) chunkBufOffset = chunkBufOffset + int32(bytesRead) if chunkBufOffset >= chunkSize || readFully || (chunkBufOffset > 0 && bytesRead == 0) { writtenChunks = writtenChunks + 1 fileId, urlLocation, assignErr := fs.assignNewFileInfo(w, r, replication, collection) if assignErr != nil { return nil, assignErr } // upload the chunk to the volume server chunkName := fileName + "_chunk_" + strconv.FormatInt(int64(len(fileChunks)+1), 10) uploadErr := fs.doUpload(urlLocation, w, r, chunkBuf[0:chunkBufOffset], chunkName, "application/octet-stream", fileId) if uploadErr != nil { return nil, uploadErr } // Save to chunk manifest structure fileChunks = append(fileChunks, &filer_pb.FileChunk{ FileId: fileId, Offset: chunkOffset, Size: uint64(chunkBufOffset), Mtime: time.Now().UnixNano(), }, ) // reset variables for the next chunk chunkBufOffset = 0 chunkOffset = totalBytesRead + int64(bytesRead) } totalBytesRead = totalBytesRead + int64(bytesRead) if bytesRead == 0 || readFully { break } if readErr != nil { return nil, readErr } } path := r.URL.Path // also delete the old fid unless PUT operation if r.Method != "PUT" { if entry, err := fs.filer.FindEntry(filer2.FullPath(path)); err == nil { for _, chunk := range entry.Chunks { oldFid := chunk.FileId operation.DeleteFile(fs.getMasterNode(), oldFid, fs.jwt(oldFid)) } } else if err != nil { glog.V(0).Infof("error %v occur when finding %s in filer store", err, path) } } glog.V(4).Infoln("saving", path) entry := &filer2.Entry{ FullPath: filer2.FullPath(path), Attr: filer2.Attr{ Mtime: time.Now(), Crtime: time.Now(), Mode: 0660, }, Chunks: fileChunks, } if db_err := fs.filer.CreateEntry(entry); db_err != nil { replyerr = db_err filerResult.Error = db_err.Error() glog.V(0).Infof("failing to write %s to filer server : %v", path, db_err) return } return } func (fs *FilerServer) doUpload(urlLocation string, w http.ResponseWriter, r *http.Request, chunkBuf []byte, fileName string, contentType string, fileId string) (err error) { err = nil ioReader := ioutil.NopCloser(bytes.NewBuffer(chunkBuf)) uploadResult, uploadError := operation.Upload(urlLocation, fileName, ioReader, false, contentType, nil, fs.jwt(fileId)) if uploadResult != nil { glog.V(0).Infoln("Chunk upload result. Name:", uploadResult.Name, "Fid:", fileId, "Size:", uploadResult.Size) } if uploadError != nil { err = uploadError } return }