package weed_server import ( "errors" "fmt" "math/rand" "net/http" "strconv" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/storage" "github.com/chrislusf/seaweedfs/weed/topology" "github.com/chrislusf/seaweedfs/weed/util" ) func (ms *MasterServer) collectionDeleteHandler(w http.ResponseWriter, r *http.Request) { collection, ok := ms.Topo.FindCollection(r.FormValue("collection")) if !ok { writeJsonError(w, r, http.StatusBadRequest, fmt.Errorf("collection %s does not exist", r.FormValue("collection"))) return } for _, server := range collection.ListVolumeServers() { _, err := util.Get("http://" + server.Ip + ":" + strconv.Itoa(server.Port) + "/admin/delete_collection?collection=" + r.FormValue("collection")) if err != nil { writeJsonError(w, r, http.StatusInternalServerError, err) return } } ms.Topo.DeleteCollection(r.FormValue("collection")) } func (ms *MasterServer) dirStatusHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.VERSION m["Topology"] = ms.Topo.ToMap() writeJsonQuiet(w, r, http.StatusOK, m) } func (ms *MasterServer) volumeVacuumHandler(w http.ResponseWriter, r *http.Request) { gcThreshold := r.FormValue("garbageThreshold") if gcThreshold == "" { gcThreshold = ms.garbageThreshold } glog.Infoln("garbageThreshold =", gcThreshold) ms.Topo.Vacuum(gcThreshold) ms.dirStatusHandler(w, r) } func (ms *MasterServer) volumeGrowHandler(w http.ResponseWriter, r *http.Request) { count := 0 option, err := ms.getVolumeGrowOption(r) if err != nil { writeJsonError(w, r, http.StatusNotAcceptable, err) return } if err == nil { if count, err = strconv.Atoi(r.FormValue("count")); err == nil { if ms.Topo.FreeSpace() < count*option.ReplicaPlacement.GetCopyCount() { err = errors.New("Only " + strconv.Itoa(ms.Topo.FreeSpace()) + " volumes left! Not enough for " + strconv.Itoa(count*option.ReplicaPlacement.GetCopyCount())) } else { count, err = ms.vg.GrowByCountAndType(count, option, ms.Topo) } } else { err = errors.New("parameter count is not found") } } if err != nil { writeJsonError(w, r, http.StatusNotAcceptable, err) } else { writeJsonQuiet(w, r, http.StatusOK, map[string]interface{}{"count": count}) } } func (ms *MasterServer) volumeStatusHandler(w http.ResponseWriter, r *http.Request) { m := make(map[string]interface{}) m["Version"] = util.VERSION m["Volumes"] = ms.Topo.ToVolumeMap() writeJsonQuiet(w, r, http.StatusOK, m) } 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 (ms *MasterServer) selfUrl(r *http.Request) string { if r.Host != "" { return r.Host } return "localhost:" + strconv.Itoa(ms.port) } func (ms *MasterServer) submitFromMasterServerHandler(w http.ResponseWriter, r *http.Request) { if ms.Topo.IsLeader() { submitForClientHandler(w, r, ms.selfUrl(r)) } else { masterUrl, err := ms.Topo.Leader() if err != nil { writeJsonError(w, r, http.StatusInternalServerError, err) } else { submitForClientHandler(w, r, masterUrl) } } } func (ms *MasterServer) deleteFromMasterServerHandler(w http.ResponseWriter, r *http.Request) { if ms.Topo.IsLeader() { deleteForClientHandler(w, r, ms.selfUrl(r)) } else { deleteForClientHandler(w, r, ms.Topo.RaftServer.Leader()) } } func (ms *MasterServer) HasWritableVolume(option *topology.VolumeGrowOption) bool { vl := ms.Topo.GetVolumeLayout(option.Collection, option.ReplicaPlacement, option.Ttl) return vl.GetActiveVolumeCount(option) > 0 } func (ms *MasterServer) getVolumeGrowOption(r *http.Request) (*topology.VolumeGrowOption, error) { replicationString := r.FormValue("replication") if replicationString == "" { replicationString = ms.defaultReplicaPlacement } replicaPlacement, err := storage.NewReplicaPlacementFromString(replicationString) if err != nil { return nil, err } ttl, err := storage.ReadTTL(r.FormValue("ttl")) if err != nil { return nil, err } preallocate := ms.preallocate if r.FormValue("preallocate") != "" { preallocate, err = strconv.ParseInt(r.FormValue("preallocate"), 10, 64) if err != nil { return nil, fmt.Errorf("Failed to parse int64 preallocate = %s: %v", r.FormValue("preallocate"), err) } } volumeGrowOption := &topology.VolumeGrowOption{ Collection: r.FormValue("collection"), ReplicaPlacement: replicaPlacement, Ttl: ttl, Prealloacte: preallocate, DataCenter: r.FormValue("dataCenter"), Rack: r.FormValue("rack"), DataNode: r.FormValue("dataNode"), } return volumeGrowOption, nil }