package skiplist import ( "github.com/chrislusf/seaweedfs/weed/glog" "github.com/golang/protobuf/proto" ) func LoadNameList(data []byte, store ListStore, batchSize int) *NameList { nl := &NameList{ skipList: New(store), batchSize: batchSize, } if len(data) == 0 { return nl } message := &SkipListProto{} if err := proto.Unmarshal(data, message); err != nil { glog.Errorf("loading skiplist: %v", err) } nl.skipList.MaxNewLevel = int(message.MaxNewLevel) nl.skipList.MaxLevel = int(message.MaxLevel) for i, ref := range message.StartLevels { nl.skipList.StartLevels[i] = &SkipListElementReference{ ElementPointer: ref.ElementPointer, Key: ref.Key, } } for i, ref := range message.EndLevels { nl.skipList.EndLevels[i] = &SkipListElementReference{ ElementPointer: ref.ElementPointer, Key: ref.Key, } } return nl } func (nl *NameList) HasChanges() bool { return nl.skipList.HasChanges } func (nl *NameList) ToBytes() []byte { message := &SkipListProto{} message.MaxNewLevel = int32(nl.skipList.MaxNewLevel) message.MaxLevel = int32(nl.skipList.MaxLevel) for _, ref := range nl.skipList.StartLevels { if ref == nil { break } message.StartLevels = append(message.StartLevels, &SkipListElementReference{ ElementPointer: ref.ElementPointer, Key: ref.Key, }) } for _, ref := range nl.skipList.EndLevels { if ref == nil { break } message.EndLevels = append(message.EndLevels, &SkipListElementReference{ ElementPointer: ref.ElementPointer, Key: ref.Key, }) } data, err := proto.Marshal(message) if err != nil { glog.Errorf("marshal skiplist: %v", err) } return data }