refactoring: split into 4 files

4 files changed, 365 insertions, 331 deletions

diff --git a/weed/server/filer_server_handlers_write.go b/weed/server/filer_server_handlers_write.go
index 78028051e..53b8d9e67 100644
--- a/weed/server/filer_server_handlers_write.go
+++ b/weed/server/filer_server_handlers_write.go
@@ -1,19 +1,11 @@
 package weed_server
 
 import (
-	"bytes"
-	"crypto/md5"
-	"encoding/base64"
 	"encoding/json"
 	"errors"
-	"fmt"
-	"io"
 	"io/ioutil"
-	"mime/multipart"
 	"net/http"
-	"net/textproto"
 	"net/url"
-	"path"
 	"strconv"
 	"strings"
 
@@ -21,7 +13,6 @@ import (
 	"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/storage"
 	"github.com/chrislusf/seaweedfs/weed/util"
 	"time"
 )
@@ -34,46 +25,6 @@ type FilerPostResult struct {
 	Url   string `json:"url,omitempty"`
 }
 
-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"
-	}
-	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
-	}
-
-	formData = buf
-	contentType = writer.FormDataContentType()
-
-	return
-}
-
 func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) {
 	var entry *filer2.Entry
 	if entry, err = fs.filer.FindEntry(filer2.FullPath(path)); err != nil {
@@ -109,117 +60,6 @@ func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request,
 	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 = 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 = ioutil.NopCloser(bytes.NewBuffer(buf))
-
-		path := r.URL.Path
-		if strings.HasSuffix(path, "/") {
-			if fileName != "" {
-				path += fileName
-			}
-		}
-		fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path)
-	} else {
-		fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection)
-	}
-	return
-}
-
-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()
@@ -352,177 +192,6 @@ func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
 	writeJsonQuiet(w, r, http.StatusCreated, reply)
 }
 
-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{
-			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
-}
-
 // curl -X DELETE http://localhost:8888/path/to
 func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
 
diff --git a/weed/server/filer_server_handlers_write_autochunk.go b/weed/server/filer_server_handlers_write_autochunk.go
new file mode 100644
index 000000000..76a720e49
--- /dev/null
+++ b/weed/server/filer_server_handlers_write_autochunk.go
@@ -0,0 +1,186 @@
+package weed_server
+
+import (
+	"bytes"
+	"io"
+	"net/http"
+	"path"
+	"strconv"
+	"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"
+	"time"
+	"io/ioutil"
+)
+
+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{
+			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
+}
diff --git a/weed/server/filer_server_handlers_write_monopart.go b/weed/server/filer_server_handlers_write_monopart.go
new file mode 100644
index 000000000..550d32aed
--- /dev/null
+++ b/weed/server/filer_server_handlers_write_monopart.go
@@ -0,0 +1,67 @@
+package weed_server
+
+import (
+	"bytes"
+	"crypto/md5"
+	"encoding/base64"
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"strings"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+)
+
+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
+}
diff --git a/weed/server/filer_server_handlers_write_multipart.go b/weed/server/filer_server_handlers_write_multipart.go
new file mode 100644
index 000000000..edf9305c6
--- /dev/null
+++ b/weed/server/filer_server_handlers_write_multipart.go
@@ -0,0 +1,112 @@
+package weed_server
+
+import (
+	"bytes"
+	"fmt"
+	"io"
+	"io/ioutil"
+	"mime/multipart"
+	"net/http"
+	"net/textproto"
+	"strings"
+
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/storage"
+)
+
+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"
+	}
+	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
+	}
+
+	formData = buf
+	contentType = writer.FormDataContentType()
+
+	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 = 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 = ioutil.NopCloser(bytes.NewBuffer(buf))
+
+		path := r.URL.Path
+		if strings.HasSuffix(path, "/") {
+			if fileName != "" {
+				path += fileName
+			}
+		}
+		fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path)
+	} else {
+		fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection)
+	}
+	return
+}
+
+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
+}