func (ms *MasterServer) redirectHandler(w http.ResponseWriter, r *http.Request) {
vid, _, _, _, _ := parseURLPath(r.URL.Path)
volumeId, err := storage.NewVolumeId(vid)
if err != nil {
debug("parsing error:", err, r.URL.Path)
return
}
machines := ms.Topo.Lookup("", volumeId)
if machines != nil && machines.Length() > 0 {
var url string
if r.URL.RawQuery != "" {
url = util.NormalizeUrl(machines.PickForRead().PublicUrl) + r.URL.Path + "?" + r.URL.RawQuery
} else {
url = util.NormalizeUrl(machines.PickForRead().PublicUrl) + r.URL.Path
}
http.Redirect(w, r, url, http.StatusMovedPermanently)
} else {
writeJsonError(w, r, http.StatusNotFound, fmt.Errorf("volume id %d not found", volumeId))
}
}
func (ms *MasterServer) redirectHandler(w http.ResponseWriter, r *http.Request) {
vid, _, _, _, _ := parseURLPath(r.URL.Path)
volumeId, err := storage.NewVolumeId(vid)
if err != nil {
debug("parsing error:", err, r.URL.Path)
return
}
collection := r.FormValue("collection")
machines := ms.Topo.Lookup(collection, volumeId)
if machines != nil && len(machines) > 0 {
var url string
if r.URL.RawQuery != "" {
url = util.NormalizeUrl(machines[rand.Intn(len(machines))].PublicUrl) + r.URL.Path + "?" + r.URL.RawQuery
} else {
url = util.NormalizeUrl(machines[rand.Intn(len(machines))].PublicUrl) + r.URL.Path
}
http.Redirect(w, r, url, http.StatusMovedPermanently)
} else {
writeJsonError(w, r, http.StatusNotFound, fmt.Errorf("volume id %d or collection %s not found", volumeId, collection))
}
}
func (s *Store) ReadRemoteNeedle(fid *FileId, collection string) (*Needle, error) {
cacheKey := fid.String()
if cn, cacheHit := s.needleCache.Get(cacheKey); cacheHit {
glog.V(2).Infoln("Remote needle cache hit:", fid)
return cn.(*Needle), nil
}
glog.V(2).Infoln("Remote needle cache miss:", fid)
vid := fid.VolumeId.String()
lookupResult, err := operation.Lookup(s.GetMaster(), vid, collection)
glog.V(2).Infoln("volume", vid, "found on", lookupResult, "error", err)
if err != nil || len(lookupResult.Locations) == 0 {
return nil, errors.New("lookup error:" + err.Error())
}
u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations.PickForRead().Url))
u.Path = "/admin/sync/needle"
args := url.Values{
"volume": {vid},
"nid": {fid.Nid()},
}
u.RawQuery = args.Encode()
req, _ := http.NewRequest("GET", u.String(), nil)
resp, err := util.HttpDo(req)
if err != nil {
return nil, err
}
defer resp.Body.Close()
var buf []byte
if buf, err = ioutil.ReadAll(resp.Body); err != nil {
return nil, err
}
if resp.StatusCode != http.StatusOK {
errMsg := strconv.Itoa(resp.StatusCode)
m := map[string]string{}
if e := json.Unmarshal(buf, &m); e == nil {
if s, ok := m["error"]; ok {
errMsg += ", " + s
}
}
return nil, errors.New(errMsg)
}
n := &Needle{
Cookie: fid.Cookie,
Id: fid.Key,
}
n.Data = buf
n.DataSize = uint32(len(n.Data))
if h := resp.Header.Get("Seaweed-Flags"); h != "" {
if i, err := strconv.ParseInt(h, 16, 64); err == nil {
n.Flags = byte(i)
}
}
if h := resp.Header.Get("Seaweed-Checksum"); h != "" {
if i, err := strconv.ParseInt(h, 16, 64); err == nil {
n.Checksum = CRC(i)
newChecksum := NewCRC(n.Data)
if n.Checksum != newChecksum {
return nil, fmt.Errorf("CRC error! Read remote data corrupted (%x!=%x), fid=%v",
n.Checksum, newChecksum, fid.String())
}
}
}
if h := resp.Header.Get("Seaweed-LastModified"); h != "" {
if i, err := strconv.ParseUint(h, 16, 64); err == nil {
n.LastModified = i
n.SetHasLastModifiedDate()
}
}
if h := resp.Header.Get("Seaweed-Name"); h != "" {
n.Name = []byte(h)
n.SetHasName()
}
if h := resp.Header.Get("Seaweed-Mime"); h != "" {
n.Mime = []byte(h)
n.SetHasMime()
}
s.needleCache.Add(cacheKey, n)
return n, nil
}
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)
}
}
}
}
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"))
}
if needleData, _, _, err = images.Resized(ext, needleData, width, height); err != nil {
glog.V(0).Infoln("resize image error,", err, r.URL.Path)
}
}
if err = writeResponseContent(filename, mtype, bytes.NewReader(needleData), w, r); err != nil {
glog.V(2).Infoln("response write error:", err, r.URL.Path)
}
}
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)
}
}
}
}
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"))
}
n.Data, _, _ = images.Resized(ext, n.Data, width, height)
}
if e := writeResponseContent(filename, mtype, bytes.NewReader(n.Data), w, r); e != nil {
glog.V(2).Infoln("response write error:", e)
}
}