mirror of
https://github.com/seaweedfs/seaweedfs.git
synced 2024-12-06 04:29:02 +08:00
154 lines
4.6 KiB
Go
154 lines
4.6 KiB
Go
package weed_server
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import (
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"fmt"
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"net/http"
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"strconv"
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"strings"
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"github.com/chrislusf/seaweedfs/weed/operation"
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"github.com/chrislusf/seaweedfs/weed/security"
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"github.com/chrislusf/seaweedfs/weed/stats"
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"github.com/chrislusf/seaweedfs/weed/storage/needle"
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)
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func (ms *MasterServer) lookupVolumeId(vids []string, collection string) (volumeLocations map[string]operation.LookupResult) {
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volumeLocations = make(map[string]operation.LookupResult)
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for _, vid := range vids {
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commaSep := strings.Index(vid, ",")
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if commaSep > 0 {
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vid = vid[0:commaSep]
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}
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if _, ok := volumeLocations[vid]; ok {
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continue
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}
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volumeLocations[vid] = ms.findVolumeLocation(collection, vid)
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}
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return
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}
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// If "fileId" is provided, this returns the fileId location and a JWT to update or delete the file.
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// If "volumeId" is provided, this only returns the volumeId location
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func (ms *MasterServer) dirLookupHandler(w http.ResponseWriter, r *http.Request) {
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vid := r.FormValue("volumeId")
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if vid != "" {
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// backward compatible
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commaSep := strings.Index(vid, ",")
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if commaSep > 0 {
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vid = vid[0:commaSep]
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}
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}
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fileId := r.FormValue("fileId")
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if fileId != "" {
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commaSep := strings.Index(fileId, ",")
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if commaSep > 0 {
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vid = fileId[0:commaSep]
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}
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}
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collection := r.FormValue("collection") // optional, but can be faster if too many collections
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location := ms.findVolumeLocation(collection, vid)
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httpStatus := http.StatusOK
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if location.Error != "" || location.Locations == nil {
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httpStatus = http.StatusNotFound
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} else {
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forRead := r.FormValue("read")
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isRead := forRead == "yes"
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ms.maybeAddJwtAuthorization(w, fileId, !isRead)
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}
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writeJsonQuiet(w, r, httpStatus, location)
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}
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// findVolumeLocation finds the volume location from master topo if it is leader,
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// or from master client if not leader
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func (ms *MasterServer) findVolumeLocation(collection, vid string) operation.LookupResult {
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var locations []operation.Location
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var err error
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if ms.Topo.IsLeader() {
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volumeId, newVolumeIdErr := needle.NewVolumeId(vid)
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if newVolumeIdErr != nil {
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err = fmt.Errorf("Unknown volume id %s", vid)
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} else {
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machines := ms.Topo.Lookup(collection, volumeId)
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for _, loc := range machines {
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locations = append(locations, operation.Location{Url: loc.Url(), PublicUrl: loc.PublicUrl})
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}
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}
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} else {
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machines, getVidLocationsErr := ms.MasterClient.GetVidLocations(vid)
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for _, loc := range machines {
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locations = append(locations, operation.Location{Url: loc.Url, PublicUrl: loc.PublicUrl})
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}
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err = getVidLocationsErr
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}
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if len(locations) == 0 && err == nil {
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err = fmt.Errorf("volume id %s not found", vid)
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}
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ret := operation.LookupResult{
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VolumeId: vid,
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Locations: locations,
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}
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if err != nil {
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ret.Error = err.Error()
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}
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return ret
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}
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func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request) {
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stats.AssignRequest()
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requestedCount, e := strconv.ParseUint(r.FormValue("count"), 10, 64)
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if e != nil || requestedCount == 0 {
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requestedCount = 1
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}
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writableVolumeCount, e := strconv.Atoi(r.FormValue("writableVolumeCount"))
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if e != nil {
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writableVolumeCount = 0
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}
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option, err := ms.getVolumeGrowOption(r)
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if err != nil {
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writeJsonQuiet(w, r, http.StatusNotAcceptable, operation.AssignResult{Error: err.Error()})
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return
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}
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if !ms.Topo.HasWritableVolume(option) {
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if ms.Topo.AvailableSpaceFor(option) <= 0 {
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writeJsonQuiet(w, r, http.StatusNotFound, operation.AssignResult{Error: "No free volumes left for " + option.String()})
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return
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}
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ms.vgLock.Lock()
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defer ms.vgLock.Unlock()
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if !ms.Topo.HasWritableVolume(option) {
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if _, err = ms.vg.AutomaticGrowByType(option, ms.grpcDialOption, ms.Topo, writableVolumeCount); err != nil {
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writeJsonError(w, r, http.StatusInternalServerError,
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fmt.Errorf("Cannot grow volume group! %v", err))
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return
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}
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}
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}
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fid, count, dn, err := ms.Topo.PickForWrite(requestedCount, option)
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if err == nil {
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ms.maybeAddJwtAuthorization(w, fid, true)
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writeJsonQuiet(w, r, http.StatusOK, operation.AssignResult{Fid: fid, Url: dn.Url(), PublicUrl: dn.PublicUrl, Count: count})
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} else {
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writeJsonQuiet(w, r, http.StatusNotAcceptable, operation.AssignResult{Error: err.Error()})
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}
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}
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func (ms *MasterServer) maybeAddJwtAuthorization(w http.ResponseWriter, fileId string, isWrite bool) {
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if fileId == "" {
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return
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}
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var encodedJwt security.EncodedJwt
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if isWrite {
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encodedJwt = security.GenJwt(ms.guard.SigningKey, ms.guard.ExpiresAfterSec, fileId)
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} else {
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encodedJwt = security.GenJwt(ms.guard.ReadSigningKey, ms.guard.ReadExpiresAfterSec, fileId)
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}
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if encodedJwt == "" {
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return
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}
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w.Header().Set("Authorization", "BEARER "+string(encodedJwt))
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}
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