Golang Needle.IsGzipped方法代碼示例

func (vs *VolumeServer) tryHandleChunkedFile(n *storage.Needle, fileName string, w http.ResponseWriter, r *http.Request) (processed bool) {
	if !n.IsChunkedManifest() {
		return false
	}

	chunkManifest, e := operation.LoadChunkManifest(n.Data, n.IsGzipped())
	if e != nil {
		glog.V(0).Infof("load chunked manifest (%s) error: %v", r.URL.Path, e)
		return false
	}
	if fileName == "" && chunkManifest.Name != "" {
		fileName = chunkManifest.Name
	}
	mType := ""
	if chunkManifest.Mime != "" {
		mt := chunkManifest.Mime
		if !strings.HasPrefix(mt, "application/octet-stream") {
			mType = mt
		}
	}

	w.Header().Set("X-File-Store", "chunked")

	chunkedFileReader := &operation.ChunkedFileReader{
		Manifest: chunkManifest,
		Master:   vs.GetMasterNode(),
	}
	defer chunkedFileReader.Close()
	if e := writeResponseContent(fileName, mType, chunkedFileReader, w, r); e != nil {
		glog.V(2).Infoln("response write error:", e)
	}
	return true
}

func (vs *VolumeServer) DeleteHandler(w http.ResponseWriter, r *http.Request) {
	n := new(storage.Needle)
	vid, fid, _, _, _ := parseURLPath(r.URL.Path)
	volumeId, _ := storage.NewVolumeId(vid)
	n.ParsePath(fid)

	glog.V(2).Infoln("deleting", n)

	cookie := n.Cookie

	_, ok := vs.store.ReadVolumeNeedle(volumeId, n)
	if ok != nil {
		m := make(map[string]uint32)
		m["size"] = 0
		writeJsonQuiet(w, r, http.StatusNotFound, m)
		return
	}
	defer n.ReleaseMemory()

	if n.Cookie != cookie {
		glog.V(0).Infoln("delete", r.URL.Path, "with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
		writeJsonError(w, r, http.StatusBadRequest, errors.New("File Random Cookie does not match."))
		return
	}

	count := int64(n.Size)

	if n.IsChunkedManifest() {
		chunkManifest, e := operation.LoadChunkManifest(n.Data, n.IsGzipped())
		if e != nil {
			writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("Load chunks manifest error: %v", e))
			return
		}
		// make sure all chunks had deleted before delete manifest
		if e := chunkManifest.DeleteChunks(vs.GetMasterNode()); e != nil {
			writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("Delete chunks error: %v", e))
			return
		}
		count = chunkManifest.Size
	}

	_, err := topology.ReplicatedDelete(vs.GetMasterNode(), vs.store, volumeId, n, r)

	if err == nil {
		m := make(map[string]int64)
		m["size"] = count
		writeJsonQuiet(w, r, http.StatusAccepted, m)
	} else {
		writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("Deletion Failed: %v", err))
	}

}

func ReplicatedWrite(masterNode string, s *storage.Store,
	volumeId storage.VolumeId, needle *storage.Needle,
	r *http.Request) (size uint32, errorStatus string) {

	//check JWT
	jwt := security.GetJwt(r)

	ret, err := s.Write(volumeId, needle)
	needToReplicate := !s.HasVolume(volumeId)
	if err != nil {
		errorStatus = "Failed to write to local disk (" + err.Error() + ")"
	} else if ret > 0 {
		needToReplicate = needToReplicate || s.GetVolume(volumeId).NeedToReplicate()
	} else {
		errorStatus = "Failed to write to local disk"
	}
	if !needToReplicate && ret > 0 {
		needToReplicate = s.GetVolume(volumeId).NeedToReplicate()
	}
	if needToReplicate { //send to other replica locations
		if r.FormValue("type") != "replicate" {

			if err = distributedOperation(masterNode, s, volumeId, func(location operation.Location) error {
				u := url.URL{
					Scheme: "http",
					Host:   location.Url,
					Path:   r.URL.Path,
				}
				q := url.Values{
					"type": {"replicate"},
				}
				if needle.LastModified > 0 {
					q.Set("ts", strconv.FormatUint(needle.LastModified, 10))
				}
				if needle.IsChunkedManifest() {
					q.Set("cm", "true")
				}
				u.RawQuery = q.Encode()
				_, err := operation.Upload(u.String(),
					string(needle.Name), bytes.NewReader(needle.Data), needle.IsGzipped(), string(needle.Mime),
					jwt)
				return err
			}); err != nil {
				ret = 0
				errorStatus = fmt.Sprintf("Failed to write to replicas for volume %d: %v", volumeId, err)
			}
		}
	}
	size = ret
	return
}

func ReplicatedWrite(masterNode string, s *storage.Store,
	volumeId storage.VolumeId, needle *storage.Needle,
	r *http.Request) (size uint32, errorStatus string) {
	//check JWT
	jwt := security.GetJwt(r)
	defer func() {
		if errorStatus == "" {
			return
		}
		ReplicatedDelete(masterNode, s, volumeId, needle, r)
	}()
	ret, err := s.Write(volumeId, needle)
	if err != nil {
		errorStatus = "Failed to write to local disk (" + err.Error() + ")"
	} else if ret <= 0 {
		errorStatus = "Failed to write to local disk"
	}
	//send to other replica locations
	if r.FormValue("type") != "replicate" {
		repWrite := func(location operation.Location) bool {
			args := url.Values{
				"type": {"replicate"},
			}
			if needle.LastModified > 0 {
				args.Set("ts", strconv.FormatUint(needle.LastModified, 10))
			}
			if needle.IsChunkedManifest() {
				args.Set("cm", "true")
			}

			u := util.MkUrl(location.Url, r.URL.Path, args)
			glog.V(4).Infoln("write replication to", u)
			_, err := operation.Upload(u,
				string(needle.Name), bytes.NewReader(needle.Data), needle.IsGzipped(), string(needle.Mime),
				jwt)
			if err != nil {
				glog.V(0).Infof("write replication to %s err, %v", u, err)
			}
			return err == nil
		}
		if !distributedOperation(masterNode, s, volumeId, repWrite) {
			ret = 0
			errorStatus = "Failed to write to replicas for volume " + volumeId.String()
		}
	}

	size = ret
	return
}

func walker(vid storage.VolumeId, n *storage.Needle, version storage.Version) (err error) {
	key := storage.NewFileIdFromNeedle(vid, n).String()
	if tarOutputFile != nil {
		fileNameTemplateBuffer.Reset()
		if err = fileNameTemplate.Execute(fileNameTemplateBuffer,
			nameParams{
				Name: string(n.Name),
				Id:   n.Id,
				Mime: string(n.Mime),
				Key:  key,
				Ext:  filepath.Ext(string(n.Name)),
			},
		); err != nil {
			return err
		}

		fileName := fileNameTemplateBuffer.String()

		if n.IsGzipped() && path.Ext(fileName) != ".gz" {
			fileName = fileName + ".gz"
		}

		tarHeader.Name, tarHeader.Size = fileName, int64(len(n.Data))
		if n.HasLastModifiedDate() {
			tarHeader.ModTime = time.Unix(int64(n.LastModified), 0)
		} else {
			tarHeader.ModTime = time.Unix(0, 0)
		}
		tarHeader.ChangeTime = tarHeader.ModTime
		if err = tarOutputFile.WriteHeader(&tarHeader); err != nil {
			return err
		}
		_, err = tarOutputFile.Write(n.Data)
	} else {
		size := n.DataSize
		if version == storage.Version1 {
			size = n.Size
		}
		fmt.Printf("key=%s Name=%s Size=%d gzip=%t mime=%s\n",
			key,
			n.Name,
			size,
			n.IsGzipped(),
			n.Mime,
		)
	}
	return
}

func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request) {
	vid, nid, filename, ext, _ := parseURLPath(r.URL.Path)
	volumeId, err := storage.NewVolumeId(vid)
	if err != nil {
		glog.V(2).Infoln("parsing error:", err, r.URL.Path)
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	var (
		n *storage.Needle
	)

	fid, err := storage.NewFileIdFromNid(vid, nid)
	if err != nil {
		glog.V(2).Infoln("parsing fid error:", err, r.URL.Path)
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	glog.V(4).Infoln("volume", volumeId, "reading", n)
	if vs.store.HasVolume(volumeId) {
		n, err = vs.store.ReadLocalNeedle(fid)
		glog.V(4).Infoln("read local needle", fid, "error", err)
		if err != nil {
			glog.V(0).Infoln("read local error:", err, r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
			return
		}
	} else if vs.ReadRemoteNeedle {
		n, err = vs.store.ReadRemoteNeedle(fid, r.FormValue("collection"))
		glog.V(4).Infoln("read remote needle", fid, "error", err)
		if err != nil {
			glog.V(0).Infoln("read remote error:", err, ",url path:", r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
			return
		}
	} else if vs.ReadRedirect {
		lookupResult, err := operation.Lookup(vs.GetMasterNode(), volumeId.String(), r.FormValue("collection"))
		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
		if err == nil && len(lookupResult.Locations) > 0 {
			u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations.PickForRead().PublicUrl))
			u.Path = r.URL.Path
			http.Redirect(w, r, u.String(), http.StatusMovedPermanently)
		} else {
			glog.V(2).Infoln("lookup error:", err, r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
		}
		return
	} else {
		glog.V(2).Infoln("volume is not local:", err, r.URL.Path)
		w.WriteHeader(http.StatusNotFound)
		return
	}

	if n.LastModified != 0 {
		w.Header().Set("Last-Modified", time.Unix(int64(n.LastModified), 0).UTC().Format(http.TimeFormat))
		if r.Header.Get("If-Modified-Since") != "" {
			if t, parseError := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since")); parseError == nil {
				if t.Unix() >= int64(n.LastModified) {
					w.WriteHeader(http.StatusNotModified)
					return
				}
			}
		}
	}
	etag := n.Etag()
	if inm := r.Header.Get("If-None-Match"); inm == etag {
		w.WriteHeader(http.StatusNotModified)
		return
	}
	w.Header().Set("Etag", etag)

	if vs.tryHandleChunkedFile(volumeId, n, filename, w, r) {
		return
	}

	if n.NameSize > 0 && filename == "" {
		filename = string(n.Name)
		if ext == "" {
			ext = path.Ext(filename)
		}
	}
	mtype := ""
	if n.MimeSize > 0 {
		mt := string(n.Mime)
		if !strings.HasPrefix(mt, "application/octet-stream") {
			mtype = mt
		}
	}
	needleData := n.Data
	if ext != ".gz" {
		if n.IsGzipped() {
			if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
				w.Header().Set("Content-Encoding", "gzip")
			} else {
				if needleData, err = operation.UnGzipData(needleData); err != nil {
					glog.V(0).Infoln("ungzip error:", err, r.URL.Path)
				}
			}
		}
	}
//.........這裏部分代碼省略.........

func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request) {
	n := new(storage.Needle)
	vid, fid, filename, ext, _ := parseURLPath(r.URL.Path)
	volumeId, err := storage.NewVolumeId(vid)
	if err != nil {
		glog.V(2).Infoln("parsing error:", err, r.URL.Path)
		w.WriteHeader(http.StatusBadRequest)
		return
	}
	err = n.ParsePath(fid)
	if err != nil {
		glog.V(2).Infoln("parsing fid error:", err, r.URL.Path)
		w.WriteHeader(http.StatusBadRequest)
		return
	}

	glog.V(4).Infoln("volume", volumeId, "reading", n)
	if !vs.store.HasVolume(volumeId) {
		if !vs.ReadRedirect {
			glog.V(2).Infoln("volume is not local:", err, r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
			return
		}
		lookupResult, err := operation.Lookup(vs.GetMasterNode(), volumeId.String())
		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
		if err == nil && len(lookupResult.Locations) > 0 {
			u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations[0].PublicUrl))
			u.Path = r.URL.Path
			arg := url.Values{}
			if c := r.FormValue("collection"); c != "" {
				arg.Set("collection", c)
			}
			u.RawQuery = arg.Encode()
			http.Redirect(w, r, u.String(), http.StatusMovedPermanently)

		} else {
			glog.V(2).Infoln("lookup error:", err, r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
		}
		return
	}
	cookie := n.Cookie
	count, e := vs.store.ReadVolumeNeedle(volumeId, n)
	glog.V(4).Infoln("read bytes", count, "error", e)
	if e != nil || count <= 0 {
		glog.V(0).Infoln("read error:", e, r.URL.Path)
		w.WriteHeader(http.StatusNotFound)
		return
	}
	defer n.ReleaseMemory()
	if n.Cookie != cookie {
		glog.V(0).Infoln("request", r.URL.Path, "with unmaching cookie seen:", cookie, "expected:", n.Cookie, "from", r.RemoteAddr, "agent", r.UserAgent())
		w.WriteHeader(http.StatusNotFound)
		return
	}
	if n.LastModified != 0 {
		w.Header().Set("Last-Modified", time.Unix(int64(n.LastModified), 0).UTC().Format(http.TimeFormat))
		if r.Header.Get("If-Modified-Since") != "" {
			if t, parseError := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since")); parseError == nil {
				if t.Unix() >= int64(n.LastModified) {
					w.WriteHeader(http.StatusNotModified)
					return
				}
			}
		}
	}
	etag := n.Etag()
	if inm := r.Header.Get("If-None-Match"); inm == etag {
		w.WriteHeader(http.StatusNotModified)
		return
	}
	w.Header().Set("Etag", etag)

	if vs.tryHandleChunkedFile(n, filename, w, r) {
		return
	}

	if n.NameSize > 0 && filename == "" {
		filename = string(n.Name)
		if ext == "" {
			ext = path.Ext(filename)
		}
	}
	mtype := ""
	if n.MimeSize > 0 {
		mt := string(n.Mime)
		if !strings.HasPrefix(mt, "application/octet-stream") {
			mtype = mt
		}
	}

	if ext != ".gz" {
		if n.IsGzipped() {
			if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") {
				w.Header().Set("Content-Encoding", "gzip")
			} else {
				if n.Data, err = operation.UnGzipData(n.Data); err != nil {
					glog.V(0).Infoln("ungzip error:", err, r.URL.Path)
				}
			}
//.........這裏部分代碼省略.........