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Golang MVCCMetadata.Unmarshal方法代码示例

本文整理汇总了Golang中github.com/cockroachdb/cockroach/pkg/storage/engine/enginepb.MVCCMetadata.Unmarshal方法的典型用法代码示例。如果您正苦于以下问题:Golang MVCCMetadata.Unmarshal方法的具体用法?Golang MVCCMetadata.Unmarshal怎么用?Golang MVCCMetadata.Unmarshal使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在github.com/cockroachdb/cockroach/pkg/storage/engine/enginepb.MVCCMetadata的用法示例。


在下文中一共展示了MVCCMetadata.Unmarshal方法的2个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Golang代码示例。

示例1: maybeUnmarshalInline

func maybeUnmarshalInline(v []byte, dest proto.Message) error {
	var meta enginepb.MVCCMetadata
	if err := meta.Unmarshal(v); err != nil {
		return err
	}
	value := roachpb.Value{
		RawBytes: meta.RawBytes,
	}
	return value.GetProto(dest)
}
开发者ID:veteranlu,项目名称:cockroach,代码行数:10,代码来源:debug.go

示例2: tryRangeIDKey

func tryRangeIDKey(kv engine.MVCCKeyValue) (string, error) {
	if kv.Key.Timestamp != hlc.ZeroTimestamp {
		return "", fmt.Errorf("range ID keys shouldn't have timestamps: %s", kv.Key)
	}
	_, _, suffix, _, err := keys.DecodeRangeIDKey(kv.Key.Key)
	if err != nil {
		return "", err
	}

	// All range ID keys are stored inline on the metadata.
	var meta enginepb.MVCCMetadata
	if err := meta.Unmarshal(kv.Value); err != nil {
		return "", err
	}
	value := roachpb.Value{RawBytes: meta.RawBytes}

	// Values encoded as protobufs set msg and continue outside the
	// switch. Other types are handled inside the switch and return.
	var msg proto.Message
	switch {
	case bytes.Equal(suffix, keys.LocalLeaseAppliedIndexSuffix):
		fallthrough
	case bytes.Equal(suffix, keys.LocalRaftAppliedIndexSuffix):
		i, err := value.GetInt()
		if err != nil {
			return "", err
		}
		return strconv.FormatInt(i, 10), nil

	case bytes.Equal(suffix, keys.LocalRangeFrozenStatusSuffix):
		b, err := value.GetBool()
		if err != nil {
			return "", err
		}
		return strconv.FormatBool(b), nil

	case bytes.Equal(suffix, keys.LocalAbortCacheSuffix):
		msg = &roachpb.AbortCacheEntry{}

	case bytes.Equal(suffix, keys.LocalRangeLastGCSuffix):
		msg = &hlc.Timestamp{}

	case bytes.Equal(suffix, keys.LocalRaftTombstoneSuffix):
		msg = &roachpb.RaftTombstone{}

	case bytes.Equal(suffix, keys.LocalRaftTruncatedStateSuffix):
		msg = &roachpb.RaftTruncatedState{}

	case bytes.Equal(suffix, keys.LocalRangeLeaseSuffix):
		msg = &roachpb.Lease{}

	case bytes.Equal(suffix, keys.LocalRangeStatsSuffix):
		msg = &enginepb.MVCCStats{}

	case bytes.Equal(suffix, keys.LocalRaftHardStateSuffix):
		msg = &raftpb.HardState{}

	case bytes.Equal(suffix, keys.LocalRaftLastIndexSuffix):
		i, err := value.GetInt()
		if err != nil {
			return "", err
		}
		return strconv.FormatInt(i, 10), nil

	case bytes.Equal(suffix, keys.LocalRangeLastVerificationTimestampSuffixDeprecated):
		msg = &hlc.Timestamp{}

	case bytes.Equal(suffix, keys.LocalRangeLastReplicaGCTimestampSuffix):
		msg = &hlc.Timestamp{}

	default:
		return "", fmt.Errorf("unknown raft id key %s", suffix)
	}

	if err := value.GetProto(msg); err != nil {
		return "", err
	}
	return msg.String(), nil
}
开发者ID:veteranlu,项目名称:cockroach,代码行数:79,代码来源:debug.go


注:本文中的github.com/cockroachdb/cockroach/pkg/storage/engine/enginepb.MVCCMetadata.Unmarshal方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。