mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
555 lines
17 KiB
Go
555 lines
17 KiB
Go
package weed_server
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import (
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"bytes"
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"crypto/md5"
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"encoding/base64"
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"encoding/json"
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"errors"
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"fmt"
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"io"
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"io/ioutil"
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"mime/multipart"
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"net/http"
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"net/textproto"
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"net/url"
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"path"
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"strconv"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/filer"
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"github.com/chrislusf/seaweedfs/weed/glog"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/storage"
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"github.com/chrislusf/seaweedfs/weed/util"
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)
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type FilerPostResult struct {
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Name string `json:"name,omitempty"`
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Size uint32 `json:"size,omitempty"`
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Error string `json:"error,omitempty"`
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Fid string `json:"fid,omitempty"`
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Url string `json:"url,omitempty"`
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}
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var quoteEscaper = strings.NewReplacer("\\", "\\\\", `"`, "\\\"")
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func escapeQuotes(s string) string {
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return quoteEscaper.Replace(s)
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}
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func createFormFile(writer *multipart.Writer, fieldname, filename, mime string) (io.Writer, error) {
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h := make(textproto.MIMEHeader)
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h.Set("Content-Disposition",
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fmt.Sprintf(`form-data; name="%s"; filename="%s"`,
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escapeQuotes(fieldname), escapeQuotes(filename)))
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if len(mime) == 0 {
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mime = "application/octet-stream"
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}
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h.Set("Content-Type", mime)
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return writer.CreatePart(h)
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}
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func makeFormData(filename, mimeType string, content io.Reader) (formData io.Reader, contentType string, err error) {
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buf := new(bytes.Buffer)
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writer := multipart.NewWriter(buf)
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defer writer.Close()
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part, err := createFormFile(writer, "file", filename, mimeType)
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if err != nil {
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glog.V(0).Infoln(err)
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return
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}
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_, err = io.Copy(part, content)
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if err != nil {
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glog.V(0).Infoln(err)
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return
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}
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formData = buf
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contentType = writer.FormDataContentType()
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return
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}
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func (fs *FilerServer) queryFileInfoByPath(w http.ResponseWriter, r *http.Request, path string) (fileId, urlLocation string, err error) {
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if fileId, err = fs.filer.FindFile(path); err != nil && err != filer.ErrNotFound {
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glog.V(0).Infoln("failing to find path in filer store", path, err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, err)
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} else if fileId != "" && err == nil {
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urlLocation, err = operation.LookupFileId(fs.getMasterNode(), fileId)
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if err != nil {
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glog.V(1).Infoln("operation LookupFileId %s failed, err is %s", fileId, err.Error())
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w.WriteHeader(http.StatusNotFound)
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}
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} else if fileId == "" && err == filer.ErrNotFound {
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w.WriteHeader(http.StatusNotFound)
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}
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return
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}
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func (fs *FilerServer) assignNewFileInfo(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) {
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ar := &operation.VolumeAssignRequest{
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Count: 1,
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Replication: replication,
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Collection: collection,
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Ttl: r.URL.Query().Get("ttl"),
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}
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assignResult, ae := operation.Assign(fs.getMasterNode(), ar)
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if ae != nil {
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glog.V(0).Infoln("failing to assign a file id", ae.Error())
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writeJsonError(w, r, http.StatusInternalServerError, ae)
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err = ae
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return
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}
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fileId = assignResult.Fid
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urlLocation = "http://" + assignResult.Url + "/" + assignResult.Fid
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return
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}
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func (fs *FilerServer) multipartUploadAnalyzer(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) {
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//Default handle way for http multipart
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if r.Method == "PUT" {
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buf, _ := ioutil.ReadAll(r.Body)
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r.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
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fileName, _, _, _, _, _, _, _, pe := storage.ParseUpload(r)
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if pe != nil {
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glog.V(0).Infoln("failing to parse post body", pe.Error())
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writeJsonError(w, r, http.StatusInternalServerError, pe)
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err = pe
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return
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}
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//reconstruct http request body for following new request to volume server
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r.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
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path := r.URL.Path
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if strings.HasSuffix(path, "/") {
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if fileName != "" {
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path += fileName
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}
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}
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fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path)
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} else {
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fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection)
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}
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return
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}
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func multipartHttpBodyBuilder(w http.ResponseWriter, r *http.Request, fileName string) (err error) {
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body, contentType, te := makeFormData(fileName, r.Header.Get("Content-Type"), r.Body)
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if te != nil {
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glog.V(0).Infoln("S3 protocol to raw seaweed protocol failed", te.Error())
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writeJsonError(w, r, http.StatusInternalServerError, te)
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err = te
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return
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}
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if body != nil {
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switch v := body.(type) {
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case *bytes.Buffer:
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r.ContentLength = int64(v.Len())
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case *bytes.Reader:
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r.ContentLength = int64(v.Len())
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case *strings.Reader:
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r.ContentLength = int64(v.Len())
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}
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}
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r.Header.Set("Content-Type", contentType)
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rc, ok := body.(io.ReadCloser)
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if !ok && body != nil {
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rc = ioutil.NopCloser(body)
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}
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r.Body = rc
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return
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}
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func checkContentMD5(w http.ResponseWriter, r *http.Request) (err error) {
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if contentMD5 := r.Header.Get("Content-MD5"); contentMD5 != "" {
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buf, _ := ioutil.ReadAll(r.Body)
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//checkMD5
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sum := md5.Sum(buf)
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fileDataMD5 := base64.StdEncoding.EncodeToString(sum[0:len(sum)])
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if strings.ToLower(fileDataMD5) != strings.ToLower(contentMD5) {
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glog.V(0).Infof("fileDataMD5 [%s] is not equal to Content-MD5 [%s]", fileDataMD5, contentMD5)
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err = fmt.Errorf("MD5 check failed")
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writeJsonError(w, r, http.StatusNotAcceptable, err)
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return
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}
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//reconstruct http request body for following new request to volume server
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r.Body = ioutil.NopCloser(bytes.NewBuffer(buf))
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}
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return
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}
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func (fs *FilerServer) monolithicUploadAnalyzer(w http.ResponseWriter, r *http.Request, replication, collection string) (fileId, urlLocation string, err error) {
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/*
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Amazon S3 ref link:[http://docs.aws.amazon.com/AmazonS3/latest/API/Welcome.html]
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There is a long way to provide a completely compatibility against all Amazon S3 API, I just made
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a simple data stream adapter between S3 PUT API and seaweedfs's volume storage Write API
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1. The request url format should be http://$host:$port/$bucketName/$objectName
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2. bucketName will be mapped to seaweedfs's collection name
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3. You could customize and make your enhancement.
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*/
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lastPos := strings.LastIndex(r.URL.Path, "/")
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if lastPos == -1 || lastPos == 0 || lastPos == len(r.URL.Path)-1 {
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glog.V(0).Infoln("URL Path [%s] is invalid, could not retrieve file name", r.URL.Path)
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err = fmt.Errorf("URL Path is invalid")
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writeJsonError(w, r, http.StatusInternalServerError, err)
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return
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}
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if err = checkContentMD5(w, r); err != nil {
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return
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}
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fileName := r.URL.Path[lastPos+1:]
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if err = multipartHttpBodyBuilder(w, r, fileName); err != nil {
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return
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}
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secondPos := strings.Index(r.URL.Path[1:], "/") + 1
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collection = r.URL.Path[1:secondPos]
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path := r.URL.Path
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if fileId, urlLocation, err = fs.queryFileInfoByPath(w, r, path); err == nil && fileId == "" {
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fileId, urlLocation, err = fs.assignNewFileInfo(w, r, replication, collection)
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}
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return
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}
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func (fs *FilerServer) PostHandler(w http.ResponseWriter, r *http.Request) {
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query := r.URL.Query()
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replication := query.Get("replication")
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if replication == "" {
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replication = fs.defaultReplication
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}
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collection := query.Get("collection")
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if collection == "" {
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collection = fs.collection
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}
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if autoChunked := fs.autoChunk(w, r, replication, collection); autoChunked {
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return
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}
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var fileId, urlLocation string
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var err error
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if strings.HasPrefix(r.Header.Get("Content-Type"), "multipart/form-data; boundary=") {
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fileId, urlLocation, err = fs.multipartUploadAnalyzer(w, r, replication, collection)
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if err != nil {
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return
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}
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} else {
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fileId, urlLocation, err = fs.monolithicUploadAnalyzer(w, r, replication, collection)
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if err != nil {
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return
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}
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}
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u, _ := url.Parse(urlLocation)
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// This allows a client to generate a chunk manifest and submit it to the filer -- it is a little off
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// because they need to provide FIDs instead of file paths...
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cm, _ := strconv.ParseBool(query.Get("cm"))
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if cm {
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q := u.Query()
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q.Set("cm", "true")
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u.RawQuery = q.Encode()
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}
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glog.V(4).Infoln("post to", u)
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request := &http.Request{
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Method: r.Method,
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URL: u,
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Proto: r.Proto,
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ProtoMajor: r.ProtoMajor,
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ProtoMinor: r.ProtoMinor,
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Header: r.Header,
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Body: r.Body,
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Host: r.Host,
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ContentLength: r.ContentLength,
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}
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resp, do_err := util.Do(request)
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if do_err != nil {
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glog.V(0).Infoln("failing to connect to volume server", r.RequestURI, do_err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, do_err)
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return
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}
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defer resp.Body.Close()
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resp_body, ra_err := ioutil.ReadAll(resp.Body)
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if ra_err != nil {
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glog.V(0).Infoln("failing to upload to volume server", r.RequestURI, ra_err.Error())
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writeJsonError(w, r, http.StatusInternalServerError, ra_err)
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return
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}
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glog.V(4).Infoln("post result", string(resp_body))
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var ret operation.UploadResult
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unmarshal_err := json.Unmarshal(resp_body, &ret)
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if unmarshal_err != nil {
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glog.V(0).Infoln("failing to read upload resonse", r.RequestURI, string(resp_body))
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writeJsonError(w, r, http.StatusInternalServerError, unmarshal_err)
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return
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}
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if ret.Error != "" {
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glog.V(0).Infoln("failing to post to volume server", r.RequestURI, ret.Error)
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writeJsonError(w, r, http.StatusInternalServerError, errors.New(ret.Error))
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return
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}
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path := r.URL.Path
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if strings.HasSuffix(path, "/") {
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if ret.Name != "" {
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path += ret.Name
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} else {
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operation.DeleteFile(fs.getMasterNode(), fileId, fs.jwt(fileId)) //clean up
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glog.V(0).Infoln("Can not to write to folder", path, "without a file name!")
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writeJsonError(w, r, http.StatusInternalServerError,
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errors.New("Can not to write to folder "+path+" without a file name"))
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return
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}
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}
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// also delete the old fid unless PUT operation
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if r.Method != "PUT" {
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if oldFid, err := fs.filer.FindFile(path); err == nil {
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operation.DeleteFile(fs.getMasterNode(), oldFid, fs.jwt(oldFid))
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} else if err != nil && err != filer.ErrNotFound {
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glog.V(0).Infof("error %v occur when finding %s in filer store", err, path)
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}
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}
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glog.V(4).Infoln("saving", path, "=>", fileId)
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if db_err := fs.filer.CreateFile(path, fileId); db_err != nil {
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operation.DeleteFile(fs.getMasterNode(), fileId, fs.jwt(fileId)) //clean up
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glog.V(0).Infof("failing to write %s to filer server : %v", path, db_err)
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writeJsonError(w, r, http.StatusInternalServerError, db_err)
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return
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}
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reply := FilerPostResult{
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Name: ret.Name,
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Size: ret.Size,
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Error: ret.Error,
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Fid: fileId,
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Url: urlLocation,
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}
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writeJsonQuiet(w, r, http.StatusCreated, reply)
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}
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func (fs *FilerServer) autoChunk(w http.ResponseWriter, r *http.Request, replication string, collection string) bool {
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if r.Method != "POST" {
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glog.V(4).Infoln("AutoChunking not supported for method", r.Method)
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return false
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}
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// autoChunking can be set at the command-line level or as a query param. Query param overrides command-line
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query := r.URL.Query()
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parsedMaxMB, _ := strconv.ParseInt(query.Get("maxMB"), 10, 32)
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maxMB := int32(parsedMaxMB)
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if maxMB <= 0 && fs.maxMB > 0 {
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maxMB = int32(fs.maxMB)
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}
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if maxMB <= 0 {
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glog.V(4).Infoln("AutoChunking not enabled")
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return false
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}
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glog.V(4).Infoln("AutoChunking level set to", maxMB, "(MB)")
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chunkSize := 1024 * 1024 * maxMB
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contentLength := int64(0)
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if contentLengthHeader := r.Header["Content-Length"]; len(contentLengthHeader) == 1 {
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contentLength, _ = strconv.ParseInt(contentLengthHeader[0], 10, 64)
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if contentLength <= int64(chunkSize) {
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glog.V(4).Infoln("Content-Length of", contentLength, "is less than the chunk size of", chunkSize, "so autoChunking will be skipped.")
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return false
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}
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}
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if contentLength <= 0 {
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glog.V(4).Infoln("Content-Length value is missing or unexpected so autoChunking will be skipped.")
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return false
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}
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reply, err := fs.doAutoChunk(w, r, contentLength, chunkSize, replication, collection)
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if err != nil {
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writeJsonError(w, r, http.StatusInternalServerError, err)
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} else if reply != nil {
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writeJsonQuiet(w, r, http.StatusCreated, reply)
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}
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return true
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}
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func (fs *FilerServer) doAutoChunk(w http.ResponseWriter, r *http.Request, contentLength int64, chunkSize int32, replication string, collection string) (filerResult *FilerPostResult, replyerr error) {
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multipartReader, multipartReaderErr := r.MultipartReader()
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if multipartReaderErr != nil {
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return nil, multipartReaderErr
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}
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part1, part1Err := multipartReader.NextPart()
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if part1Err != nil {
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return nil, part1Err
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}
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fileName := part1.FileName()
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if fileName != "" {
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fileName = path.Base(fileName)
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}
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chunks := (int64(contentLength) / int64(chunkSize)) + 1
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cm := operation.ChunkManifest{
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Name: fileName,
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Size: 0, // don't know yet
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Mime: "application/octet-stream",
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Chunks: make([]*operation.ChunkInfo, 0, chunks),
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}
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totalBytesRead := int64(0)
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tmpBufferSize := int32(1024 * 1024)
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tmpBuffer := bytes.NewBuffer(make([]byte, 0, tmpBufferSize))
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chunkBuf := make([]byte, chunkSize+tmpBufferSize, chunkSize+tmpBufferSize) // chunk size plus a little overflow
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chunkBufOffset := int32(0)
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chunkOffset := int64(0)
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writtenChunks := 0
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filerResult = &FilerPostResult{
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Name: fileName,
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}
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for totalBytesRead < contentLength {
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tmpBuffer.Reset()
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bytesRead, readErr := io.CopyN(tmpBuffer, part1, int64(tmpBufferSize))
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readFully := readErr != nil && readErr == io.EOF
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tmpBuf := tmpBuffer.Bytes()
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bytesToCopy := tmpBuf[0:int(bytesRead)]
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copy(chunkBuf[chunkBufOffset:chunkBufOffset+int32(bytesRead)], bytesToCopy)
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chunkBufOffset = chunkBufOffset + int32(bytesRead)
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if chunkBufOffset >= chunkSize || readFully || (chunkBufOffset > 0 && bytesRead == 0) {
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writtenChunks = writtenChunks + 1
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fileId, urlLocation, assignErr := fs.assignNewFileInfo(w, r, replication, collection)
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if assignErr != nil {
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return nil, assignErr
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}
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// upload the chunk to the volume server
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chunkName := fileName + "_chunk_" + strconv.FormatInt(int64(cm.Chunks.Len()+1), 10)
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uploadErr := fs.doUpload(urlLocation, w, r, chunkBuf[0:chunkBufOffset], chunkName, "application/octet-stream", fileId)
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if uploadErr != nil {
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return nil, uploadErr
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}
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// Save to chunk manifest structure
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cm.Chunks = append(cm.Chunks,
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&operation.ChunkInfo{
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Offset: chunkOffset,
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Size: int64(chunkBufOffset),
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Fid: fileId,
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},
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)
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// reset variables for the next chunk
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chunkBufOffset = 0
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chunkOffset = totalBytesRead + int64(bytesRead)
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}
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totalBytesRead = totalBytesRead + int64(bytesRead)
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if bytesRead == 0 || readFully {
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break
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}
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if readErr != nil {
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return nil, readErr
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}
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}
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cm.Size = totalBytesRead
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manifestBuf, marshalErr := cm.Marshal()
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if marshalErr != nil {
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return nil, marshalErr
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}
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manifestStr := string(manifestBuf)
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glog.V(4).Infoln("Generated chunk manifest: ", manifestStr)
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manifestFileId, manifestUrlLocation, manifestAssignmentErr := fs.assignNewFileInfo(w, r, replication, collection)
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if manifestAssignmentErr != nil {
|
|
return nil, manifestAssignmentErr
|
|
}
|
|
glog.V(4).Infoln("Manifest uploaded to:", manifestUrlLocation, "Fid:", manifestFileId)
|
|
filerResult.Fid = manifestFileId
|
|
|
|
u, _ := url.Parse(manifestUrlLocation)
|
|
q := u.Query()
|
|
q.Set("cm", "true")
|
|
u.RawQuery = q.Encode()
|
|
|
|
manifestUploadErr := fs.doUpload(u.String(), w, r, manifestBuf, fileName+"_manifest", "application/json", manifestFileId)
|
|
if manifestUploadErr != nil {
|
|
return nil, manifestUploadErr
|
|
}
|
|
|
|
path := r.URL.Path
|
|
// also delete the old fid unless PUT operation
|
|
if r.Method != "PUT" {
|
|
if oldFid, err := fs.filer.FindFile(path); err == nil {
|
|
operation.DeleteFile(fs.getMasterNode(), oldFid, fs.jwt(oldFid))
|
|
} else if err != nil && err != filer.ErrNotFound {
|
|
glog.V(0).Infof("error %v occur when finding %s in filer store", err, path)
|
|
}
|
|
}
|
|
|
|
glog.V(4).Infoln("saving", path, "=>", manifestFileId)
|
|
if db_err := fs.filer.CreateFile(path, manifestFileId); db_err != nil {
|
|
replyerr = db_err
|
|
filerResult.Error = db_err.Error()
|
|
operation.DeleteFile(fs.getMasterNode(), manifestFileId, fs.jwt(manifestFileId)) //clean up
|
|
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
|
|
// curl -X DELETE http://localhost:8888/path/to?recursive=true
|
|
func (fs *FilerServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
|
|
var err error
|
|
var fid string
|
|
if strings.HasSuffix(r.URL.Path, "/") {
|
|
isRecursive := r.FormValue("recursive") == "true"
|
|
err = fs.filer.DeleteDirectory(r.URL.Path, isRecursive)
|
|
} else {
|
|
fid, err = fs.filer.DeleteFile(r.URL.Path)
|
|
if err == nil && fid != "" {
|
|
err = operation.DeleteFile(fs.getMasterNode(), fid, fs.jwt(fid))
|
|
}
|
|
}
|
|
if err == nil {
|
|
writeJsonQuiet(w, r, http.StatusAccepted, map[string]string{"error": ""})
|
|
} else {
|
|
glog.V(4).Infoln("deleting", r.URL.Path, ":", err.Error())
|
|
writeJsonError(w, r, http.StatusInternalServerError, err)
|
|
}
|
|
}
|