package operation import ( "bytes" "crypto/md5" "encoding/json" "errors" "fmt" "io" "io/ioutil" "mime" "mime/multipart" "net/http" "net/textproto" "path/filepath" "strings" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/util" ) type UploadResult struct { Name string `json:"name,omitempty"` Size uint32 `json:"size,omitempty"` Error string `json:"error,omitempty"` ETag string `json:"eTag,omitempty"` CipherKey []byte `json:"cipherKey,omitempty"` Mime string `json:"mime,omitempty"` Gzip uint32 `json:"gzip,omitempty"` Md5 string `json:"md5,omitempty"` } var ( client *http.Client ) func init() { client = &http.Client{Transport: &http.Transport{ MaxIdleConnsPerHost: 1024, }} } var fileNameEscaper = strings.NewReplacer("\\", "\\\\", "\"", "\\\"") // Upload sends a POST request to a volume server to upload the content with adjustable compression level func UploadData(uploadUrl string, filename string, cipher bool, data []byte, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) { hash := md5.New() hash.Write(data) uploadResult, err = doUploadData(uploadUrl, filename, cipher, data, isInputGzipped, mtype, pairMap, jwt) if uploadResult != nil { uploadResult.Md5 = fmt.Sprintf("%x", hash.Sum(nil)) } return } // Upload sends a POST request to a volume server to upload the content with fast compression func Upload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error, data []byte) { hash := md5.New() reader = io.TeeReader(reader, hash) uploadResult, err, data = doUpload(uploadUrl, filename, cipher, reader, isInputGzipped, mtype, pairMap, jwt) if uploadResult != nil { uploadResult.Md5 = fmt.Sprintf("%x", hash.Sum(nil)) } return } func doUpload(uploadUrl string, filename string, cipher bool, reader io.Reader, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error, data []byte) { data, err = ioutil.ReadAll(reader) if err != nil { err = fmt.Errorf("read input: %v", err) return } uploadResult, uploadErr := doUploadData(uploadUrl, filename, cipher, data, isInputGzipped, mtype, pairMap, jwt) return uploadResult, uploadErr, data } func doUploadData(uploadUrl string, filename string, cipher bool, data []byte, isInputGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (uploadResult *UploadResult, err error) { contentIsGzipped := isInputGzipped shouldGzipNow := false if !isInputGzipped { if shouldBeZipped, iAmSure := util.IsGzippableFileType(filepath.Base(filename), mtype); iAmSure && shouldBeZipped { shouldGzipNow = true } else if len(data) > 128 { var compressed []byte compressed, err = util.GzipData(data[0:128]) shouldGzipNow = len(compressed)*10 < 128*9 // can not compress to less than 90% } } var clearDataLen int // gzip if possible // this could be double copying clearDataLen = len(data) if shouldGzipNow { compressed, compressErr := util.GzipData(data) // fmt.Printf("data is compressed from %d ==> %d\n", len(data), len(compressed)) if compressErr == nil { data = compressed contentIsGzipped = true } } else if isInputGzipped { // just to get the clear data length clearData, err := util.UnGzipData(data) if err == nil { clearDataLen = len(clearData) } } if cipher { // encrypt(gzip(data)) // encrypt cipherKey := util.GenCipherKey() encryptedData, encryptionErr := util.Encrypt(data, cipherKey) if encryptionErr != nil { err = fmt.Errorf("encrypt input: %v", encryptionErr) return } // upload data uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) { _, err = w.Write(encryptedData) return }, "", false, "", nil, jwt) if uploadResult != nil { uploadResult.Name = filename uploadResult.Mime = mtype uploadResult.CipherKey = cipherKey } } else { // upload data uploadResult, err = upload_content(uploadUrl, func(w io.Writer) (err error) { _, err = w.Write(data) return }, filename, contentIsGzipped, mtype, pairMap, jwt) } if uploadResult == nil { return } uploadResult.Size = uint32(clearDataLen) if contentIsGzipped { uploadResult.Gzip = 1 } return uploadResult, err } func upload_content(uploadUrl string, fillBufferFunction func(w io.Writer) error, filename string, isGzipped bool, mtype string, pairMap map[string]string, jwt security.EncodedJwt) (*UploadResult, error) { body_buf := bytes.NewBufferString("") body_writer := multipart.NewWriter(body_buf) h := make(textproto.MIMEHeader) h.Set("Content-Disposition", fmt.Sprintf(`form-data; name="file"; filename="%s"`, fileNameEscaper.Replace(filename))) if mtype == "" { mtype = mime.TypeByExtension(strings.ToLower(filepath.Ext(filename))) } if mtype != "" { h.Set("Content-Type", mtype) } if isGzipped { h.Set("Content-Encoding", "gzip") } file_writer, cp_err := body_writer.CreatePart(h) if cp_err != nil { glog.V(0).Infoln("error creating form file", cp_err.Error()) return nil, cp_err } if err := fillBufferFunction(file_writer); err != nil { glog.V(0).Infoln("error copying data", err) return nil, err } content_type := body_writer.FormDataContentType() if err := body_writer.Close(); err != nil { glog.V(0).Infoln("error closing body", err) return nil, err } req, postErr := http.NewRequest("POST", uploadUrl, body_buf) if postErr != nil { glog.V(0).Infoln("failing to upload to", uploadUrl, postErr.Error()) return nil, postErr } req.Header.Set("Content-Type", content_type) for k, v := range pairMap { req.Header.Set(k, v) } if jwt != "" { req.Header.Set("Authorization", "BEARER "+string(jwt)) } resp, post_err := client.Do(req) if post_err != nil { glog.V(0).Infoln("failing to upload to", uploadUrl, post_err.Error()) return nil, post_err } defer resp.Body.Close() var ret UploadResult etag := getEtag(resp) if resp.StatusCode == http.StatusNoContent { ret.ETag = etag return &ret, nil } resp_body, ra_err := ioutil.ReadAll(resp.Body) if ra_err != nil { return nil, ra_err } unmarshal_err := json.Unmarshal(resp_body, &ret) if unmarshal_err != nil { glog.V(0).Infoln("failing to read upload response", uploadUrl, string(resp_body)) return nil, unmarshal_err } if ret.Error != "" { return nil, errors.New(ret.Error) } ret.ETag = etag return &ret, nil } func getEtag(r *http.Response) (etag string) { etag = r.Header.Get("ETag") if strings.HasPrefix(etag, "\"") && strings.HasSuffix(etag, "\"") { etag = etag[1 : len(etag)-1] } return }