package topology import ( "encoding/json" "errors" "fmt" "net/url" "github.com/chrislusf/seaweedfs/weed/storage" "github.com/chrislusf/seaweedfs/weed/util" ) type AllocateVolumeResult struct { Error string } func AllocateVolume(dn *DataNode, vid storage.VolumeId, option *VolumeGrowOption) error { values := make(url.Values) values.Add("volume", vid.String()) values.Add("collection", option.Collection) values.Add("replication", option.ReplicaPlacement.String()) values.Add("ttl", option.Ttl.String()) jsonBlob, err := util.Post("http://"+dn.Url()+"/admin/assign_volume", values) if err != nil { return err } var ret AllocateVolumeResult if err := json.Unmarshal(jsonBlob, &ret); err != nil { return fmt.Errorf("Invalid JSON result for %s: %s", "/admin/assign_volum", string(jsonBlob)) } if ret.Error != "" { return errors.New(ret.Error) } return nil }