package weed_server import ( "context" "crypto/md5" "io" "io/ioutil" "net/http" "path" "strconv" "strings" "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" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/stats" "github.com/chrislusf/seaweedfs/weed/util" ) func (fs *FilerServer) autoChunk(ctx context.Context, w http.ResponseWriter, r *http.Request, replication string, collection string, dataCenter string, ttlSec int32, ttlString string, fsync bool) 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.option.MaxMB > 0 { maxMB = int32(fs.option.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(ctx, w, r, contentLength, chunkSize, replication, collection, dataCenter, ttlSec, ttlString, fsync) 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(ctx context.Context, w http.ResponseWriter, r *http.Request, contentLength int64, chunkSize int32, replication string, collection string, dataCenter string, ttlSec int32, ttlString string, fsync bool) (filerResult *FilerPostResult, replyerr error) { stats.FilerRequestCounter.WithLabelValues("postAutoChunk").Inc() start := time.Now() defer func() { stats.FilerRequestHistogram.WithLabelValues("postAutoChunk").Observe(time.Since(start).Seconds()) }() 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) } contentType := part1.Header.Get("Content-Type") var fileChunks []*filer_pb.FileChunk md5Hash := md5.New() var partReader = ioutil.NopCloser(io.TeeReader(part1, md5Hash)) chunkOffset := int64(0) for chunkOffset < contentLength { limitedReader := io.LimitReader(partReader, int64(chunkSize)) // assign one file id for one chunk fileId, urlLocation, auth, assignErr := fs.assignNewFileInfo(replication, collection, dataCenter, ttlString, fsync) if assignErr != nil { return nil, assignErr } // upload the chunk to the volume server uploadResult, uploadErr := fs.doUpload(urlLocation, w, r, limitedReader, fileName, contentType, nil, auth) if uploadErr != nil { return nil, uploadErr } // if last chunk exhausted the reader exactly at the border if uploadResult.Size == 0 { break } // Save to chunk manifest structure fileChunks = append(fileChunks, uploadResult.ToPbFileChunk(fileId, chunkOffset)) glog.V(4).Infof("uploaded %s chunk %d to %s [%d,%d) of %d", fileName, len(fileChunks), fileId, chunkOffset, chunkOffset+int64(uploadResult.Size), contentLength) // reset variables for the next chunk chunkOffset = chunkOffset + int64(uploadResult.Size) // if last chunk was not at full chunk size, but already exhausted the reader if int64(uploadResult.Size) < int64(chunkSize) { break } } fileChunks, replyerr = filer2.MaybeManifestize(fs.saveAsChunk(replication, collection, dataCenter, ttlString, fsync), fileChunks) if replyerr != nil { glog.V(0).Infof("manifestize %s: %v", r.RequestURI, replyerr) return } path := r.URL.Path if strings.HasSuffix(path, "/") { if fileName != "" { path += fileName } } glog.V(4).Infoln("saving", path) entry := &filer2.Entry{ FullPath: util.FullPath(path), Attr: filer2.Attr{ Mtime: time.Now(), Crtime: time.Now(), Mode: 0660, Uid: OS_UID, Gid: OS_GID, Replication: replication, Collection: collection, TtlSec: ttlSec, Mime: contentType, Md5: md5Hash.Sum(nil), }, Chunks: fileChunks, } filerResult = &FilerPostResult{ Name: fileName, Size: chunkOffset, } if dbErr := fs.filer.CreateEntry(ctx, entry, false, false); dbErr != nil { fs.filer.DeleteChunks(entry.Chunks) replyerr = dbErr filerResult.Error = dbErr.Error() glog.V(0).Infof("failing to write %s to filer server : %v", path, dbErr) return } return } func (fs *FilerServer) doUpload(urlLocation string, w http.ResponseWriter, r *http.Request, limitedReader io.Reader, fileName string, contentType string, pairMap map[string]string, auth security.EncodedJwt) (*operation.UploadResult, error) { stats.FilerRequestCounter.WithLabelValues("postAutoChunkUpload").Inc() start := time.Now() defer func() { stats.FilerRequestHistogram.WithLabelValues("postAutoChunkUpload").Observe(time.Since(start).Seconds()) }() uploadResult, err, _ := operation.Upload(urlLocation, fileName, fs.option.Cipher, limitedReader, false, contentType, pairMap, auth) return uploadResult, err } func (fs *FilerServer) saveAsChunk(replication string, collection string, dataCenter string, ttlString string, fsync bool) filer2.SaveDataAsChunkFunctionType { return func(reader io.Reader, name string, offset int64) (*filer_pb.FileChunk, string, string, error) { // assign one file id for one chunk fileId, urlLocation, auth, assignErr := fs.assignNewFileInfo(replication, collection, dataCenter, ttlString, fsync) if assignErr != nil { return nil, "", "", assignErr } // upload the chunk to the volume server uploadResult, uploadErr, _ := operation.Upload(urlLocation, name, fs.option.Cipher, reader, false, "", nil, auth) if uploadErr != nil { return nil, "", "", uploadErr } return uploadResult.ToPbFileChunk(fileId, offset), collection, replication, nil } }