package weed_server import ( "fmt" "net/http" "strconv" "strings" "github.com/chrislusf/seaweedfs/weed/operation" "github.com/chrislusf/seaweedfs/weed/security" "github.com/chrislusf/seaweedfs/weed/stats" "github.com/chrislusf/seaweedfs/weed/storage" ) func (ms *MasterServer) lookupVolumeId(vids []string, collection string) (volumeLocations map[string]operation.LookupResult) { volumeLocations = make(map[string]operation.LookupResult) for _, vid := range vids { commaSep := strings.Index(vid, ",") if commaSep > 0 { vid = vid[0:commaSep] } if _, ok := volumeLocations[vid]; ok { continue } volumeId, err := storage.NewVolumeId(vid) if err == nil { machines := ms.Topo.Lookup(collection, volumeId) if machines != nil { var ret []operation.Location for _, dn := range machines { ret = append(ret, operation.Location{Url: dn.Url(), PublicUrl: dn.PublicUrl}) } volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Locations: ret} } else { volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Error: fmt.Sprintf("volumeId %s not found.", vid)} } } else { volumeLocations[vid] = operation.LookupResult{VolumeId: vid, Error: fmt.Sprintf("Unknown volumeId format: %s", vid)} } } return } // If "fileId" is provided, this returns the fileId location and a JWT to update or delete the file. // If "volumeId" is provided, this only returns the volumeId location func (ms *MasterServer) dirLookupHandler(w http.ResponseWriter, r *http.Request) { vid := r.FormValue("volumeId") if vid != "" { // backward compatible commaSep := strings.Index(vid, ",") if commaSep > 0 { vid = vid[0:commaSep] } } fileId := r.FormValue("fileId") if fileId != "" { commaSep := strings.Index(fileId, ",") if commaSep > 0 { vid = fileId[0:commaSep] } } vids := []string{vid} collection := r.FormValue("collection") //optional, but can be faster if too many collections volumeLocations := ms.lookupVolumeId(vids, collection) location := volumeLocations[vid] httpStatus := http.StatusOK if location.Error != "" { httpStatus = http.StatusNotFound } else { ms.maybeAddJwtAuthorization(w, fileId) } writeJsonQuiet(w, r, httpStatus, location) } func (ms *MasterServer) dirAssignHandler(w http.ResponseWriter, r *http.Request) { stats.AssignRequest() requestedCount, e := strconv.ParseUint(r.FormValue("count"), 10, 64) if e != nil || requestedCount == 0 { requestedCount = 1 } option, err := ms.getVolumeGrowOption(r) if err != nil { writeJsonQuiet(w, r, http.StatusNotAcceptable, operation.AssignResult{Error: err.Error()}) return } if !ms.Topo.HasWritableVolume(option) { if ms.Topo.FreeSpace() <= 0 { writeJsonQuiet(w, r, http.StatusNotFound, operation.AssignResult{Error: "No free volumes left!"}) return } ms.vgLock.Lock() defer ms.vgLock.Unlock() if !ms.Topo.HasWritableVolume(option) { if _, err = ms.vg.AutomaticGrowByType(option, ms.Topo); err != nil { writeJsonError(w, r, http.StatusInternalServerError, fmt.Errorf("Cannot grow volume group! %v", err)) return } } } fid, count, dn, err := ms.Topo.PickForWrite(requestedCount, option) if err == nil { ms.maybeAddJwtAuthorization(w, fid) writeJsonQuiet(w, r, http.StatusOK, operation.AssignResult{Fid: fid, Url: dn.Url(), PublicUrl: dn.PublicUrl, Count: count}) } else { writeJsonQuiet(w, r, http.StatusNotAcceptable, operation.AssignResult{Error: err.Error()}) } } func (ms *MasterServer) maybeAddJwtAuthorization(w http.ResponseWriter, fileId string) { encodedJwt := security.GenJwt(ms.guard.SigningKey, fileId) if encodedJwt == "" { return } w.Header().Set("Authorization", "BEARER "+string(encodedJwt)) }