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