Golang storage.Needle类代码示例

原作者: [db:作者] 来自: [db:来源] 收藏邀请

本文整理汇总了Golang中code/google/com/p/weed-fs/go/storage.Needle类的典型用法代码示例。如果您正苦于以下问题：Golang Needle类的具体用法？Golang Needle怎么用？Golang Needle使用的例子？那么恭喜您, 这里精选的类代码示例或许可以为您提供帮助。

在下文中一共展示了Needle类的8个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于我们的系统推荐出更棒的Golang代码示例。

示例1: batchDeleteHandler

//Experts only: takes multiple fid parameters. This function does not propagate deletes to replicas.
func (vs *VolumeServer) batchDeleteHandler(w http.ResponseWriter, r *http.Request) {
	r.ParseForm()
	var ret []operation.DeleteResult
	for _, fid := range r.Form["fid"] {
		vid, id_cookie, err := operation.ParseFileId(fid)
		if err != nil {
			ret = append(ret, operation.DeleteResult{Fid: fid, Error: err.Error()})
			continue
		}
		n := new(storage.Needle)
		volumeId, _ := storage.NewVolumeId(vid)
		n.ParsePath(id_cookie)
		glog.V(4).Infoln("batch deleting", n)
		cookie := n.Cookie
		if _, err := vs.store.Read(volumeId, n); err != nil {
			ret = append(ret, operation.DeleteResult{Fid: fid, Error: err.Error()})
			continue
		}
		if n.Cookie != cookie {
			ret = append(ret, operation.DeleteResult{Fid: fid, Error: "File Random Cookie does not match."})
			glog.V(0).Infoln("deleting", fid, "with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
			return
		}
		if size, err := vs.store.Delete(volumeId, n); err != nil {
			ret = append(ret, operation.DeleteResult{Fid: fid, Error: err.Error()})
		} else {
			ret = append(ret, operation.DeleteResult{Fid: fid, Size: int(size)})
		}
	}

	w.WriteHeader(http.StatusAccepted)

	writeJsonQuiet(w, r, ret)
}

开发者ID:yonglehou，项目名称:weedfs，代码行数:35，代码来源:volume_server_handlers.go

示例2: DeleteHandler

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

	debug("deleting", n)

	cookie := n.Cookie
	count, ok := store.Read(volumeId, n)

	if ok != nil {
		m := make(map[string]uint32)
		m["size"] = 0
		writeJsonQuiet(w, r, m)
		return
	}

	if n.Cookie != cookie {
		log.Println("delete with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
		return
	}

	n.Size = 0
	ret, err := store.Delete(volumeId, n)
	if err != nil {
		log.Println("delete error:", err)
		return
	}

	needToReplicate := !store.HasVolume(volumeId)
	if !needToReplicate && ret > 0 {
		needToReplicate = store.GetVolume(volumeId).NeedToReplicate()
	}
	if needToReplicate { //send to other replica locations
		if r.FormValue("type") != "standard" {
			if !distributedOperation(volumeId, func(location operation.Location) bool {
				return nil == operation.Delete("http://"+location.Url+r.URL.Path+"?type=standard")
			}) {
				ret = 0
			}
		}
	}

	if ret != 0 {
		w.WriteHeader(http.StatusAccepted)
	} else {
		w.WriteHeader(http.StatusInternalServerError)
	}

	m := make(map[string]uint32)
	m["size"] = uint32(count)
	writeJsonQuiet(w, r, m)
}

开发者ID:hfeeki，项目名称:weedfs，代码行数:54，代码来源:volume.go

示例3: walker

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

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

		tarHeader.Name, tarHeader.Size = nm, int64(len(n.Data))
		if err = tarFh.WriteHeader(&tarHeader); err != nil {
			return err
		}
		_, err = tarFh.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
}

开发者ID:varun2784，项目名称:weed-fs，代码行数:39，代码来源:export.go

示例4: DeleteHandler

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
	count, ok := vs.store.Read(volumeId, n)

	if ok != nil {
		m := make(map[string]uint32)
		m["size"] = 0
		writeJsonQuiet(w, r, m)
		return
	}

	if n.Cookie != cookie {
		glog.V(0).Infoln("delete", r.URL.Path, "with unmaching cookie from ", r.RemoteAddr, "agent", r.UserAgent())
		return
	}

	n.Size = 0
	ret := topology.ReplicatedDelete(vs.masterNode, vs.store, volumeId, n, r)

	if ret != 0 {
		w.WriteHeader(http.StatusAccepted)
	} else {
		w.WriteHeader(http.StatusInternalServerError)
	}

	m := make(map[string]uint32)
	m["size"] = uint32(count)
	writeJsonQuiet(w, r, m)
}

开发者ID:yonglehou，项目名称:weedfs，代码行数:36，代码来源:volume_server_handlers.go

示例5: GetOrHeadHandler

func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request, isGetMethod bool) {
	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) {
		lookupResult, err := operation.Lookup(vs.masterNode, volumeId.String())
		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
		if err == nil && len(lookupResult.Locations) > 0 {
			http.Redirect(w, r, "http://"+lookupResult.Locations[0].PublicUrl+r.URL.Path, 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.Read(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
	}
	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
				}
			}
		}
	}
	if n.NameSize > 0 && filename == "" {
		filename = string(n.Name)
		dotIndex := strings.LastIndex(filename, ".")
		if dotIndex > 0 {
			ext = filename[dotIndex:]
		}
	}
	mtype := ""
	if ext != "" {
		mtype = mime.TypeByExtension(ext)
	}
	if n.MimeSize > 0 {
		mtype = string(n.Mime)
	}
	if mtype != "" {
		w.Header().Set("Content-Type", mtype)
	}
	if filename != "" {
		w.Header().Set("Content-Disposition", "filename="+fileNameEscaper.Replace(filename))
	}
	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 = storage.UnGzipData(n.Data); err != nil {
					glog.V(0).Infoln("lookup error:", err, r.URL.Path)
				}
			}
		}
	}
	if ext == ".png" || ext == ".jpg" || ext == ".gif" {
		if srcImage, _, err := image.Decode(bytes.NewReader(n.Data)); err == nil {
			width, height := 0, 0
			if r.FormValue("width") != "" {
				width, _ = strconv.Atoi(r.FormValue("width"))
			}
			if r.FormValue("height") != "" {
				height, _ = strconv.Atoi(r.FormValue("height"))
			}
			if width != 0 || height != 0 {
				bounds := srcImage.Bounds()
				var dstImage *image.NRGBA
				if width == height && bounds.Dx() != bounds.Dy() {
					dstImage = imaging.Thumbnail(srcImage, width, height, imaging.Lanczos)
				} else {
					dstImage = imaging.Resize(srcImage, width, height, imaging.Lanczos)
				}
//.........这里部分代码省略.........

开发者ID:yonglehou，项目名称:weedfs，代码行数:101，代码来源:volume_server_handlers.go

示例6: ReplicatedWrite

func ReplicatedWrite(masterNode string, s *storage.Store, volumeId storage.VolumeId, needle *storage.Needle, r *http.Request) (size uint32, errorStatus string) {
	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 !distributedOperation(masterNode, s, volumeId, func(location operation.Location) bool {
				_, err := operation.Upload("http://"+location.Url+r.URL.Path+"?type=replicate&ts="+strconv.FormatUint(needle.LastModified, 10), string(needle.Name), bytes.NewReader(needle.Data), needle.IsGzipped(), string(needle.Mime))
				return err == nil
			}) {
				ret = 0
				errorStatus = "Failed to write to replicas for volume " + volumeId.String()
			}
		}
	}
	if errorStatus != "" {
		if _, err = s.Delete(volumeId, needle); err != nil {
			errorStatus += "\nCannot delete " + strconv.FormatUint(needle.Id, 10) + " from " +
				volumeId.String() + ": " + err.Error()
		} else {
			distributedOperation(masterNode, s, volumeId, func(location operation.Location) bool {
				return nil == operation.Delete("http://"+location.Url+r.URL.Path+"?type=replicate")
			})
		}
	}
	size = ret
	return
}

开发者ID:asdf20122012，项目名称:weed-fs，代码行数:37，代码来源:store_replicate.go

示例7: GetOrHeadHandler

func GetOrHeadHandler(w http.ResponseWriter, r *http.Request, isGetMethod bool) {
	n := new(storage.Needle)
	vid, fid, filename, ext := parseURLPath(r.URL.Path)
	volumeId, err := storage.NewVolumeId(vid)
	if err != nil {
		debug("parsing error:", err, r.URL.Path)
		return
	}
	n.ParsePath(fid)

	debug("volume", volumeId, "reading", n)
	if !store.HasVolume(volumeId) {
		lookupResult, err := operation.Lookup(*masterNode, volumeId)
		debug("volume", volumeId, "found on", lookupResult, "error", err)
		if err == nil {
			http.Redirect(w, r, "http://"+lookupResult.Locations[0].PublicUrl+r.URL.Path, http.StatusMovedPermanently)
		} else {
			debug("lookup error:", err, r.URL.Path)
			w.WriteHeader(http.StatusNotFound)
		}
		return
	}
	cookie := n.Cookie
	count, e := store.Read(volumeId, n)
	debug("read bytes", count, "error", e)
	if e != nil || count <= 0 {
		debug("read error:", e, r.URL.Path)
		w.WriteHeader(http.StatusNotFound)
		return
	}
	if n.Cookie != cookie {
		log.Println("request with unmaching 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
				}
			}
		}
	}
	if n.NameSize > 0 && filename == "" {
		filename := string(n.Name)
		dotIndex := strings.LastIndex(filename, ".")
		if dotIndex > 0 {
			ext = filename[dotIndex:]
		}
	}
	mtype := ""
	if ext != "" {
		mtype = mime.TypeByExtension(ext)
	}
	if n.MimeSize > 0 {
		mtype = string(n.Mime)
	}
	if mtype != "" {
		w.Header().Set("Content-Type", mtype)
	}
	if filename != "" {
		w.Header().Set("Content-Disposition", "filename="+fileNameEscaper.Replace(filename))
	}
	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 = storage.UnGzipData(n.Data); err != nil {
					debug("lookup error:", err, r.URL.Path)
				}
			}
		}
	}
	w.Header().Set("Content-Length", strconv.Itoa(len(n.Data)))
	if isGetMethod {
		if _, e = w.Write(n.Data); e != nil {
			debug("response write error:", e)
		}
	}
}

开发者ID:pipul，项目名称:weed-fs，代码行数:84，代码来源:volume.go

示例8: GetOrHeadHandler

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) {
		lookupResult, err := operation.Lookup(vs.masterNode, volumeId.String())
		glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
		if err == nil && len(lookupResult.Locations) > 0 {
			http.Redirect(w, r, "http://"+lookupResult.Locations[0].PublicUrl+r.URL.Path, 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.Read(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
	}
	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 n.NameSize > 0 && filename == "" {
		filename = string(n.Name)
		dotIndex := strings.LastIndex(filename, ".")
		if dotIndex > 0 {
			ext = filename[dotIndex:]
		}
	}
	mtype := ""
	if ext != "" {
		mtype = mime.TypeByExtension(ext)
	}
	if n.MimeSize > 0 {
		mt := string(n.Mime)
		if mt != "application/octet-stream" {
			mtype = mt
		}
	}
	if mtype != "" {
		w.Header().Set("Content-Type", mtype)
	}
	if filename != "" {
		w.Header().Set("Content-Disposition", "filename=\""+fileNameEscaper.Replace(filename)+"\"")
	}
	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 = storage.UnGzipData(n.Data); err != nil {
					glog.V(0).Infoln("lookup error:", err, r.URL.Path)
				}
			}
		}
	}
	if ext == ".png" || ext == ".jpg" || ext == ".gif" {
		width, height := 0, 0
		if r.FormValue("width") != "" {
			width, _ = strconv.Atoi(r.FormValue("width"))
		}
		if r.FormValue("height") != "" {
			height, _ = strconv.Atoi(r.FormValue("height"))
		}
//.........这里部分代码省略.........

开发者ID:hanlz，项目名称:weed-fs，代码行数:101，代码来源:volume_server_handlers.go

注：本文中的code/google/com/p/weed-fs/go/storage.Needle类示例整理自Github/MSDocs等源码及文档管理平台，相关代码片段筛选自各路编程大神贡献的开源项目，源码版权归原作者所有，传播和使用请参考对应项目的License；未经允许，请勿转载。