mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-01-19 02:48:24 +00:00
417 lines
12 KiB
Go
417 lines
12 KiB
Go
package weed_server
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import (
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"bytes"
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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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"mime"
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"net/http"
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"net/url"
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"path/filepath"
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"strconv"
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"strings"
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"sync/atomic"
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"time"
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"github.com/seaweedfs/seaweedfs/weed/storage/types"
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"github.com/seaweedfs/seaweedfs/weed/util/mem"
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"github.com/seaweedfs/seaweedfs/weed/glog"
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"github.com/seaweedfs/seaweedfs/weed/images"
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"github.com/seaweedfs/seaweedfs/weed/operation"
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"github.com/seaweedfs/seaweedfs/weed/stats"
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"github.com/seaweedfs/seaweedfs/weed/storage"
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"github.com/seaweedfs/seaweedfs/weed/storage/needle"
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"github.com/seaweedfs/seaweedfs/weed/util"
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)
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var fileNameEscaper = strings.NewReplacer(`\`, `\\`, `"`, `\"`)
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func NotFound(w http.ResponseWriter) {
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stats.VolumeServerHandlerCounter.WithLabelValues(stats.ErrorGetNotFound).Inc()
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w.WriteHeader(http.StatusNotFound)
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}
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func InternalError(w http.ResponseWriter) {
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stats.VolumeServerHandlerCounter.WithLabelValues(stats.ErrorGetInternal).Inc()
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w.WriteHeader(http.StatusInternalServerError)
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}
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func (vs *VolumeServer) GetOrHeadHandler(w http.ResponseWriter, r *http.Request) {
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n := new(needle.Needle)
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vid, fid, filename, ext, _ := parseURLPath(r.URL.Path)
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if !vs.maybeCheckJwtAuthorization(r, vid, fid, false) {
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writeJsonError(w, r, http.StatusUnauthorized, errors.New("wrong jwt"))
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return
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}
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volumeId, err := needle.NewVolumeId(vid)
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if err != nil {
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glog.V(2).Infof("parsing vid %s: %v", r.URL.Path, err)
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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err = n.ParsePath(fid)
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if err != nil {
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glog.V(2).Infof("parsing fid %s: %v", r.URL.Path, err)
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w.WriteHeader(http.StatusBadRequest)
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return
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}
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// glog.V(4).Infoln("volume", volumeId, "reading", n)
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hasVolume := vs.store.HasVolume(volumeId)
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_, hasEcVolume := vs.store.FindEcVolume(volumeId)
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if !hasVolume && !hasEcVolume {
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if vs.ReadMode == "local" {
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glog.V(0).Infoln("volume is not local:", err, r.URL.Path)
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NotFound(w)
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return
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}
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lookupResult, err := operation.LookupVolumeId(vs.GetMaster, vs.grpcDialOption, volumeId.String())
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glog.V(2).Infoln("volume", volumeId, "found on", lookupResult, "error", err)
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if err != nil || len(lookupResult.Locations) <= 0 {
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glog.V(0).Infoln("lookup error:", err, r.URL.Path)
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NotFound(w)
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return
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}
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if vs.ReadMode == "proxy" {
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// proxy client request to target server
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u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations[0].Url))
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r.URL.Host = u.Host
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r.URL.Scheme = u.Scheme
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request, err := http.NewRequest("GET", r.URL.String(), nil)
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if err != nil {
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glog.V(0).Infof("failed to instance http request of url %s: %v", r.URL.String(), err)
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InternalError(w)
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return
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}
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for k, vv := range r.Header {
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for _, v := range vv {
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request.Header.Add(k, v)
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}
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}
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response, err := client.Do(request)
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if err != nil {
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glog.V(0).Infof("request remote url %s: %v", r.URL.String(), err)
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InternalError(w)
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return
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}
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defer util.CloseResponse(response)
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// proxy target response to client
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for k, vv := range response.Header {
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for _, v := range vv {
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w.Header().Add(k, v)
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}
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}
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w.WriteHeader(response.StatusCode)
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buf := mem.Allocate(128 * 1024)
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defer mem.Free(buf)
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io.CopyBuffer(w, response.Body, buf)
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return
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} else {
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// redirect
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u, _ := url.Parse(util.NormalizeUrl(lookupResult.Locations[0].PublicUrl))
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u.Path = fmt.Sprintf("%s/%s,%s", u.Path, vid, fid)
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arg := url.Values{}
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if c := r.FormValue("collection"); c != "" {
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arg.Set("collection", c)
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}
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u.RawQuery = arg.Encode()
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http.Redirect(w, r, u.String(), http.StatusMovedPermanently)
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return
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}
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}
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cookie := n.Cookie
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readOption := &storage.ReadOption{
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ReadDeleted: r.FormValue("readDeleted") == "true",
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HasSlowRead: vs.hasSlowRead,
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ReadBufferSize: vs.readBufferSizeMB * 1024 * 1024,
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}
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var count int
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var memoryCost types.Size
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readOption.AttemptMetaOnly, readOption.MustMetaOnly = shouldAttemptStreamWrite(hasVolume, ext, r)
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onReadSizeFn := func(size types.Size) {
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memoryCost = size
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atomic.AddInt64(&vs.inFlightDownloadDataSize, int64(memoryCost))
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}
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if hasVolume {
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count, err = vs.store.ReadVolumeNeedle(volumeId, n, readOption, onReadSizeFn)
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} else if hasEcVolume {
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count, err = vs.store.ReadEcShardNeedle(volumeId, n, onReadSizeFn)
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}
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defer func() {
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atomic.AddInt64(&vs.inFlightDownloadDataSize, -int64(memoryCost))
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vs.inFlightDownloadDataLimitCond.Signal()
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}()
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if err != nil && err != storage.ErrorDeleted && hasVolume {
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glog.V(4).Infof("read needle: %v", err)
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// start to fix it from other replicas, if not deleted and hasVolume and is not a replicated request
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}
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// glog.V(4).Infoln("read bytes", count, "error", err)
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if err != nil || count < 0 {
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glog.V(3).Infof("read %s isNormalVolume %v error: %v", r.URL.Path, hasVolume, err)
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if err == storage.ErrorNotFound || err == storage.ErrorDeleted {
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NotFound(w)
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} else {
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InternalError(w)
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}
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return
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}
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if n.Cookie != cookie {
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glog.V(0).Infof("request %s with cookie:%x expected:%x from %s agent %s", r.URL.Path, cookie, n.Cookie, r.RemoteAddr, r.UserAgent())
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NotFound(w)
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return
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}
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if n.LastModified != 0 {
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w.Header().Set("Last-Modified", time.Unix(int64(n.LastModified), 0).UTC().Format(http.TimeFormat))
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if r.Header.Get("If-Modified-Since") != "" {
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if t, parseError := time.Parse(http.TimeFormat, r.Header.Get("If-Modified-Since")); parseError == nil {
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if t.Unix() >= int64(n.LastModified) {
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w.WriteHeader(http.StatusNotModified)
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return
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}
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}
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}
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}
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if inm := r.Header.Get("If-None-Match"); inm == "\""+n.Etag()+"\"" {
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w.WriteHeader(http.StatusNotModified)
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return
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}
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setEtag(w, n.Etag())
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if n.HasPairs() {
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pairMap := make(map[string]string)
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err = json.Unmarshal(n.Pairs, &pairMap)
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if err != nil {
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glog.V(0).Infoln("Unmarshal pairs error:", err)
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}
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for k, v := range pairMap {
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w.Header().Set(k, v)
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}
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}
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if vs.tryHandleChunkedFile(n, filename, ext, w, r) {
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return
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}
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if n.NameSize > 0 && filename == "" {
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filename = string(n.Name)
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if ext == "" {
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ext = filepath.Ext(filename)
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}
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}
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mtype := ""
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if n.MimeSize > 0 {
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mt := string(n.Mime)
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if !strings.HasPrefix(mt, "application/octet-stream") {
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mtype = mt
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}
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}
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if n.IsCompressed() {
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_, _, _, shouldResize := shouldResizeImages(ext, r)
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_, _, _, _, shouldCrop := shouldCropImages(ext, r)
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if shouldResize || shouldCrop {
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if n.Data, err = util.DecompressData(n.Data); err != nil {
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glog.V(0).Infoln("ungzip error:", err, r.URL.Path)
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}
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// } else if strings.Contains(r.Header.Get("Accept-Encoding"), "zstd") && util.IsZstdContent(n.Data) {
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// w.Header().Set("Content-Encoding", "zstd")
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} else if strings.Contains(r.Header.Get("Accept-Encoding"), "gzip") && util.IsGzippedContent(n.Data) {
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w.Header().Set("Content-Encoding", "gzip")
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} else {
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if n.Data, err = util.DecompressData(n.Data); err != nil {
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glog.V(0).Infoln("uncompress error:", err, r.URL.Path)
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}
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}
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}
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if !readOption.IsMetaOnly {
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rs := conditionallyCropImages(bytes.NewReader(n.Data), ext, r)
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rs = conditionallyResizeImages(rs, ext, r)
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if e := writeResponseContent(filename, mtype, rs, w, r); e != nil {
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glog.V(2).Infoln("response write error:", e)
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}
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} else {
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vs.streamWriteResponseContent(filename, mtype, volumeId, n, w, r, readOption)
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}
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}
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func shouldAttemptStreamWrite(hasLocalVolume bool, ext string, r *http.Request) (shouldAttempt bool, mustMetaOnly bool) {
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if !hasLocalVolume {
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return false, false
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}
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if len(ext) > 0 {
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ext = strings.ToLower(ext)
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}
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if r.Method == "HEAD" {
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return true, true
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}
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_, _, _, shouldResize := shouldResizeImages(ext, r)
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_, _, _, _, shouldCrop := shouldCropImages(ext, r)
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if shouldResize || shouldCrop {
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return false, false
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}
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return true, false
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}
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func (vs *VolumeServer) tryHandleChunkedFile(n *needle.Needle, fileName string, ext string, w http.ResponseWriter, r *http.Request) (processed bool) {
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if !n.IsChunkedManifest() || r.URL.Query().Get("cm") == "false" {
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return false
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}
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chunkManifest, e := operation.LoadChunkManifest(n.Data, n.IsCompressed())
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if e != nil {
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glog.V(0).Infof("load chunked manifest (%s) error: %v", r.URL.Path, e)
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return false
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}
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if fileName == "" && chunkManifest.Name != "" {
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fileName = chunkManifest.Name
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}
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if ext == "" {
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ext = filepath.Ext(fileName)
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}
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mType := ""
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if chunkManifest.Mime != "" {
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mt := chunkManifest.Mime
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if !strings.HasPrefix(mt, "application/octet-stream") {
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mType = mt
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}
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}
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w.Header().Set("X-File-Store", "chunked")
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chunkedFileReader := operation.NewChunkedFileReader(chunkManifest.Chunks, vs.GetMaster(), vs.grpcDialOption)
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defer chunkedFileReader.Close()
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rs := conditionallyCropImages(chunkedFileReader, ext, r)
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rs = conditionallyResizeImages(rs, ext, r)
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if e := writeResponseContent(fileName, mType, rs, w, r); e != nil {
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glog.V(2).Infoln("response write error:", e)
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}
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return true
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}
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func conditionallyResizeImages(originalDataReaderSeeker io.ReadSeeker, ext string, r *http.Request) io.ReadSeeker {
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rs := originalDataReaderSeeker
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if len(ext) > 0 {
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ext = strings.ToLower(ext)
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}
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width, height, mode, shouldResize := shouldResizeImages(ext, r)
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if shouldResize {
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rs, _, _ = images.Resized(ext, originalDataReaderSeeker, width, height, mode)
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}
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return rs
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}
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func shouldResizeImages(ext string, r *http.Request) (width, height int, mode string, shouldResize bool) {
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if ext == ".png" || ext == ".jpg" || ext == ".jpeg" || ext == ".gif" || ext == ".webp" {
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if r.FormValue("width") != "" {
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width, _ = strconv.Atoi(r.FormValue("width"))
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}
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if r.FormValue("height") != "" {
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height, _ = strconv.Atoi(r.FormValue("height"))
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}
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}
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mode = r.FormValue("mode")
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shouldResize = width > 0 || height > 0
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return
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}
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func conditionallyCropImages(originalDataReaderSeeker io.ReadSeeker, ext string, r *http.Request) io.ReadSeeker {
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rs := originalDataReaderSeeker
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if len(ext) > 0 {
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ext = strings.ToLower(ext)
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}
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x1, y1, x2, y2, shouldCrop := shouldCropImages(ext, r)
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if shouldCrop {
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var err error
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rs, err = images.Cropped(ext, rs, x1, y1, x2, y2)
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if err != nil {
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glog.Errorf("Cropping images error: %s", err)
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}
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}
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return rs
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}
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func shouldCropImages(ext string, r *http.Request) (x1, y1, x2, y2 int, shouldCrop bool) {
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if ext == ".png" || ext == ".jpg" || ext == ".jpeg" || ext == ".gif" {
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if r.FormValue("crop_x1") != "" {
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x1, _ = strconv.Atoi(r.FormValue("crop_x1"))
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}
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if r.FormValue("crop_y1") != "" {
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y1, _ = strconv.Atoi(r.FormValue("crop_y1"))
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}
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if r.FormValue("crop_x2") != "" {
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x2, _ = strconv.Atoi(r.FormValue("crop_x2"))
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}
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if r.FormValue("crop_y2") != "" {
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y2, _ = strconv.Atoi(r.FormValue("crop_y2"))
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}
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}
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shouldCrop = x1 >= 0 && y1 >= 0 && x2 > x1 && y2 > y1
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return
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}
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func writeResponseContent(filename, mimeType string, rs io.ReadSeeker, w http.ResponseWriter, r *http.Request) error {
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totalSize, e := rs.Seek(0, 2)
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if mimeType == "" {
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if ext := filepath.Ext(filename); ext != "" {
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mimeType = mime.TypeByExtension(ext)
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}
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}
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if mimeType != "" {
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w.Header().Set("Content-Type", mimeType)
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}
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w.Header().Set("Accept-Ranges", "bytes")
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adjustPassthroughHeaders(w, r, filename)
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if r.Method == "HEAD" {
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w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10))
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return nil
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}
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return processRangeRequest(r, w, totalSize, mimeType, func(writer io.Writer, offset int64, size int64) error {
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if _, e = rs.Seek(offset, 0); e != nil {
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return e
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}
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_, e = io.CopyN(writer, rs, size)
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return e
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})
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}
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func (vs *VolumeServer) streamWriteResponseContent(filename string, mimeType string, volumeId needle.VolumeId, n *needle.Needle, w http.ResponseWriter, r *http.Request, readOption *storage.ReadOption) {
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totalSize := int64(n.DataSize)
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if mimeType == "" {
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if ext := filepath.Ext(filename); ext != "" {
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mimeType = mime.TypeByExtension(ext)
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}
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}
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if mimeType != "" {
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w.Header().Set("Content-Type", mimeType)
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}
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w.Header().Set("Accept-Ranges", "bytes")
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adjustPassthroughHeaders(w, r, filename)
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if r.Method == "HEAD" {
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w.Header().Set("Content-Length", strconv.FormatInt(totalSize, 10))
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return
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}
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processRangeRequest(r, w, totalSize, mimeType, func(writer io.Writer, offset int64, size int64) error {
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return vs.store.ReadVolumeNeedleDataInto(volumeId, n, readOption, writer, offset, size)
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})
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}
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