package topology import ( "code.google.com/p/weed-fs/go/storage" "code.google.com/p/weed-fs/go/util" "encoding/json" "errors" "net/url" ) type AllocateVolumeResult struct { Error string } func AllocateVolume(dn *DataNode, vid storage.VolumeId, collection string, rp *storage.ReplicaPlacement) error { values := make(url.Values) values.Add("volume", vid.String()) values.Add("collection", collection) values.Add("replication", rp.String()) jsonBlob, err := util.Post("http://"+dn.PublicUrl+"/admin/assign_volume", values) if err != nil { return err } var ret AllocateVolumeResult if err := json.Unmarshal(jsonBlob, &ret); err != nil { return err } if ret.Error != "" { return errors.New(ret.Error) } return nil }