本文整理汇总了Golang中github.com/chrislusf/seaweedfs/weed/storage.Needle.Etag方法的典型用法代码示例。如果您正苦于以下问题：Golang Needle.Etag方法的具体用法？Golang Needle.Etag怎么用？Golang Needle.Etag使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类github.com/chrislusf/seaweedfs/weed/storage.Needle的用法示例。
在下文中一共展示了Needle.Etag方法的2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，您的评价将有助于系统推荐出更棒的Golang代码示例。
示例1: GetOrHeadHandler
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)
}
}
}
}
//.........这里部分代码省略.........
示例2: 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) {
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)
}
}
//.........这里部分代码省略.........