本文整理匯總了Golang中github.com/cockroachdb/cockroach/storage/engine.MVCCMetadata類的典型用法代碼示例。如果您正苦於以下問題：Golang MVCCMetadata類的具體用法？Golang MVCCMetadata怎麽用？Golang MVCCMetadata使用的例子？那麽, 這裏精選的類代碼示例或許可以為您提供幫助。
在下文中一共展示了MVCCMetadata類的3個代碼示例，這些例子默認根據受歡迎程度排序。您可以為喜歡或者感覺有用的代碼點讚，您的評價將有助於係統推薦出更棒的Golang代碼示例。
示例1: printRaftLogEntry
func printRaftLogEntry(kv engine.MVCCKeyValue) (bool, error) {
var meta engine.MVCCMetadata
if err := meta.Unmarshal(kv.Value); err != nil {
return false, err
}
value := roachpb.Value{
RawBytes: meta.RawBytes,
}
var ent raftpb.Entry
if err := value.GetProto(&ent); err != nil {
return false, err
}
if len(ent.Data) > 0 {
_, cmdData := storage.DecodeRaftCommand(ent.Data)
var cmd roachpb.RaftCommand
if err := cmd.Unmarshal(cmdData); err != nil {
return false, err
}
ent.Data = nil
fmt.Printf("%s\n", &ent)
fmt.Printf("%s\n", &cmd)
} else {
fmt.Printf("%s: EMPTY\n", &ent)
}
return false, nil
}示例2: maybeUnmarshalInline
func maybeUnmarshalInline(v []byte, dest proto.Message) error {
var meta engine.MVCCMetadata
if err := meta.Unmarshal(v); err != nil {
return err
}
value := roachpb.Value{
RawBytes: meta.RawBytes,
}
return value.GetProto(dest)
}示例3: copySeqCache
func copySeqCache(
e engine.Engine,
ms *engine.MVCCStats,
srcID, dstID roachpb.RangeID,
keyMin, keyMax engine.MVCCKey,
) (int, error) {
var scratch [64]byte
var count int
var meta engine.MVCCMetadata
// TODO(spencer): look into making this an MVCCIteration and writing
// the values using MVCC so we can avoid the ugliness of updating
// the MVCCStats by hand below.
err := e.Iterate(keyMin, keyMax,
func(kv engine.MVCCKeyValue) (bool, error) {
// Decode the key, skipping on error. Otherwise, write it to the
// corresponding key in the new cache.
txnID, err := decodeAbortCacheMVCCKey(kv.Key, scratch[:0])
if err != nil {
return false, util.Errorf("could not decode an abort cache key %s: %s", kv.Key, err)
}
key := keys.AbortCacheKey(dstID, txnID)
encKey := engine.MakeMVCCMetadataKey(key)
// Decode the MVCCMetadata value.
if err := proto.Unmarshal(kv.Value, &meta); err != nil {
return false, util.Errorf("could not decode mvcc metadata %s [% x]: %s", kv.Key, kv.Value, err)
}
value := meta.Value()
value.ClearChecksum()
value.InitChecksum(key)
meta.RawBytes = value.RawBytes
keyBytes, valBytes, err := engine.PutProto(e, encKey, &meta)
if err != nil {
return false, err
}
count++
if ms != nil {
ms.SysBytes += keyBytes + valBytes
ms.SysCount++
}
return false, nil
})
return count, err
}