diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go index 2aad20980..597004f7d 100644 --- a/weed/server/filer_server_handlers_write.go +++ b/weed/server/filer_server_handlers_write.go @@ -2,10 +2,16 @@ package weed_server import ( "bytes" + "crypto/md5" + "encoding/base64" "encoding/json" "errors" + "fmt" + "io" "io/ioutil" + "mime/multipart" "net/http" + "net/textproto" "net/url" "strings" @@ -16,13 +22,6 @@ import ( "github.com/syndtr/goleveldb/leveldb" ) -type analogueReader struct { - *bytes.Buffer -} - -// So that it implements the io.ReadCloser interface -func (m analogueReader) Close() error { return nil } - type FilerPostResult struct { Name string `json:"name,omitempty"` Size uint32 `json:"size,omitempty"` @@ -31,31 +30,89 @@ type FilerPostResult struct { Url string `json:"url,omitempty"` } -func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) { - query := r.URL.Query() - replication := query.Get("replication") - if replication == "" { - replication = fs.defaultReplication +var quoteEscaper = strings.NewReplacer("\\", "\\\\", `"`, "\\\"") + +func escapeQuotes(s string) string { + return quoteEscaper.Replace(s) +} + +func createFormFile(writer *multipart.Writer, fieldname, filename, mime string) (io.Writer, error) { + h := make(textproto.MIMEHeader) + h.Set("Content-Disposition", + fmt.Sprintf(`form-data; name="%s"; filename="%s"`, + escapeQuotes(fieldname), escapeQuotes(filename))) + if len(mime) == 0 { + mime = "application/octet-stream" } - collection := query.Get("collection") - if collection == "" { - collection = fs.collection + h.Set("Content-Type", mime) + return writer.CreatePart(h) +} + +func makeFormData(filename, mimeType string, content io.Reader) (formData io.Reader, contentType string, err error) { + buf := new(bytes.Buffer) + writer := multipart.NewWriter(buf) + defer writer.Close() + + part, err := createFormFile(writer, "file", filename, mimeType) + if err != nil { + glog.V(0).Infoln(err) + return + } + _, err = io.Copy(part, content) + if err != nil { + glog.V(0).Infoln(err) + return } - var fileId string - var err error - var urlLocation string + formData = buf + contentType = writer.FormDataContentType() + + return +} + +func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) { + if fileId, err = fs.filer.FindFile(path); err != nil && err != leveldb.ErrNotFound { + glog.V(0).Infoln("failing to find path in filer store", path, err.Error()) + writeJsonError(w, r, http.StatusInternalServerError, err) + return + } else if fileId != "" && err == nil { + urlLocation, err = operation.LookupFileId(fs.getMasterNode(), fileId) + if err != nil { + glog.V(1).Infoln("operation LookupFileId %s failed, err is %s", fileId, err.Error()) + w.WriteHeader(http.StatusNotFound) + return + } + } + return +} + +func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) { + assignResult, ae := operation.Assign(fs.getMasterNode(), 1, replication, collection, r.URL.Query().Get("ttl")) + if ae != nil { + glog.V(0).Infoln("failing to assign a file id", ae.Error()) + writeJsonError(w, r, http.StatusInternalServerError, ae) + err = ae + return + } + fileId = assignResult.Fid + urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid + return +} + +func (fs *FilerServer) multipartUploadAnalyzer(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) { + //Default handle way for http multipart if r.Method == "PUT" { buf, _ := ioutil.ReadAll(r.Body) - r.Body = analogueReader{bytes.NewBuffer(buf)} + r.Body = ioutil.NopCloser(bytes.NewBuffer(buf)) fileName, _, _, _, _, _, _, pe := storage.ParseUpload(r) if pe != nil { glog.V(0).Infoln("failing to parse post body", pe.Error()) writeJsonError(w, r, http.StatusInternalServerError, pe) + err = pe return } //reconstruct http request body for following new request to volume server - r.Body = analogueReader{bytes.NewBuffer(buf)} + r.Body = ioutil.NopCloser(bytes.NewBuffer(buf)) path := r.URL.Path if strings.HasSuffix(path, "/") { @@ -63,29 +120,120 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) { path += fileName } } + fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path) + } else { + fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection) + } + return +} - if fileId, err = fs.filer.FindFile(path); err != nil && err != leveldb.ErrNotFound { - glog.V(0).Infoln("failing to find path in filer store", path, err.Error()) - writeJsonError(w, r, http.StatusInternalServerError, err) +func multipartHttpBodyBuilder(w http.ResponseWriter, r *http.Request, fileName string) (err error) { + body, contentType, te := makeFormData(fileName, r.Header.Get("Content-Type"), r.Body) + if te != nil { + glog.V(0).Infoln("S3 protocol to raw seaweed protocol failed", te.Error()) + writeJsonError(w, r, http.StatusInternalServerError, te) + err = te + return + } + + if body != nil { + switch v := body.(type) { + case *bytes.Buffer: + r.ContentLength = int64(v.Len()) + case *bytes.Reader: + r.ContentLength = int64(v.Len()) + case *strings.Reader: + r.ContentLength = int64(v.Len()) + } + } + + r.Header.Set("Content-Type", contentType) + rc, ok := body.(io.ReadCloser) + if !ok && body != nil { + rc = ioutil.NopCloser(body) + } + r.Body = rc + return +} + +func checkContentMD5(w http.ResponseWriter, r *http.Request) (err error) { + if contentMD5 := r.Header.Get("Content-MD5"); contentMD5 != "" { + buf, _ := ioutil.ReadAll(r.Body) + //checkMD5 + sum := md5.Sum(buf) + fileDataMD5 := base64.StdEncoding.EncodeToString(sum[0:len(sum)]) + if strings.ToLower(fileDataMD5) != strings.ToLower(contentMD5) { + glog.V(0).Infof("fileDataMD5 [%s] is not equal to Content-MD5 [%s]", fileDataMD5, contentMD5) + err = fmt.Errorf("MD5 check failed") + writeJsonError(w, r, http.StatusNotAcceptable, err) + return + } + //reconstruct http request body for following new request to volume server + r.Body = ioutil.NopCloser(bytes.NewBuffer(buf)) + } + return +} + +func (fs *FilerServer) monolithicUploadAnalyzer(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) { + /* + Amazon S3 ref link:[http://docs.aws.amazon.com/AmazonS3/latest/API/Welcome.html] + There is a long way to provide a completely compatibility against all Amazon S3 API, I just made + a simple data stream adapter between S3 PUT API and seaweedfs's volume storage Write API + 1. The request url format should be http://$host:$port/$bucketName/$objectName + 2. bucketName will be mapped to seaweedfs's collection name + 3. You could customize and make your enhancement. + */ + lastPos := strings.LastIndex(r.URL.Path, "/") + if lastPos == -1 || lastPos == 0 || lastPos == len(r.URL.Path)-1 { + glog.V(0).Infoln("URL Path [%s] is invalid, could not retrieve file name", r.URL.Path) + err = fmt.Errorf("URL Path is invalid") + writeJsonError(w, r, http.StatusInternalServerError, err) + return + } + + if err = checkContentMD5(w, r); err != nil { + return + } + + fileName := r.URL.Path[lastPos+1:] + if err = multipartHttpBodyBuilder(w, r, fileName); err != nil { + return + } + + secondPos := strings.Index(r.URL.Path[1:], "/") + 1 + collection = r.URL.Path[1:secondPos] + path := r.URL.Path + + if fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path); err == nil && fileId == "" { + fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection) + } + return +} + +func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) { + query := r.URL.Query() + replication := query.Get("replication") + if replication == "" { + replication = fs.defaultReplication + } + collection := query.Get("collection") + if collection == "" { + collection = fs.collection + } + + var fileId, urlLocation string + var err error + + if strings.HasPrefix(r.Header.Get("Content-Type"), "multipart/form-data; boundary=") { + fileId, urlLocation, err = fs.multipartUploadAnalyzer(w, r, replication, collection) + if err != nil { return - } else if fileId != "" && err == nil { - var le error - urlLocation, le = operation.LookupFileId(fs.getMasterNode(), fileId) - if le != nil { - glog.V(1).Infoln("operation LookupFileId %s failed, err is %s", fileId, le.Error()) - w.WriteHeader(http.StatusNotFound) - return - } } } else { - assignResult, ae := operation.Assign(fs.getMasterNode(), 1, replication, collection, query.Get("ttl")) - if ae != nil { - glog.V(0).Infoln("failing to assign a file id", ae.Error()) - writeJsonError(w, r, http.StatusInternalServerError, ae) + fileId, urlLocation, err = fs.monolithicUploadAnalyzer(w, r, replication, collection) + if err != nil { return } - fileId = assignResult.Fid - urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid } u, _ := url.Parse(urlLocation)