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https://github.com/cubefs/cubefs.git
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9c561ac9e3
close:#1000167427
Signed-off-by: chihe <chihe@oppo.com>
(cherry picked from commit b7af94e2a4)
48 lines
1.0 KiB
Go
48 lines
1.0 KiB
Go
package flashgroupmanager
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import (
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"fmt"
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"io"
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"github.com/tecbot/gorocksdb"
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)
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// MetadataSnapshot represents the snapshot of a meta partition
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type MetadataSnapshot struct {
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fsm *MetadataFsm
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applied uint64
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snapshot *gorocksdb.Snapshot
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iterator *gorocksdb.Iterator
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}
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// ApplyIndex implements the Snapshot interface
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func (ms *MetadataSnapshot) ApplyIndex() uint64 {
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return ms.applied
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}
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// Close implements the Snapshot interface
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func (ms *MetadataSnapshot) Close() {
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ms.fsm.store.ReleaseSnapshot(ms.snapshot)
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}
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// Next implements the Snapshot interface
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func (ms *MetadataSnapshot) Next() (data []byte, err error) {
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md := new(RaftCmd)
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if ms.iterator.Valid() {
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key := ms.iterator.Key()
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md.K = string(key.Data())
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md.setOpType()
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value := ms.iterator.Value()
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if value != nil {
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md.V = value.Data()
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}
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if data, err = md.Marshal(); err != nil {
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err = fmt.Errorf("action[Next],marshal kv:%v,err:%v", md, err.Error())
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return nil, err
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}
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ms.iterator.Next()
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return data, nil
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}
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return nil, io.EOF
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}
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