Package org.apache.cassandra.io.sstable.metadata

Interface IMetadataSerializer

All Known Implementing Classes:

MetadataSerializer

public interface IMetadataSerializer

Interface for SSTable metadata serializer

Method Summary

Modifier and Type	Method	Description
Map<MetadataType,MetadataComponent>	deserialize(Descriptor descriptor, EnumSet<MetadataType> types)	Deserialize specified metadata components from given descriptor.
MetadataComponent	deserialize(Descriptor descriptor, MetadataType type)	Deserialized only metadata component specified from given descriptor.
void	mutate(Descriptor descriptor, String description, UnaryOperator<StatsMetadata> transform)	Mutate SSTable Metadata NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.
void	mutateLevel(Descriptor descriptor, int newLevel)	Mutate SSTable level NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.
void	mutateRepairMetadata(Descriptor descriptor, long newRepairedAt, TimeUUID newPendingRepair, boolean isTransient)	Mutate the repairedAt time, pendingRepair ID, and transient status.
void	rewriteSSTableMetadata(Descriptor descriptor, Map<MetadataType,MetadataComponent> currentComponents)	Replace the sstable metadata file (-Statistics.db) with the given components.
void	serialize(Map<MetadataType,MetadataComponent> components, DataOutputPlus out, Version version)	Serialize given metadata components

Method Details

serialize

void serialize(Map<MetadataType,MetadataComponent> components,
 DataOutputPlus out,
 Version version)
        throws IOException

Serialize given metadata components

Parameters:

components - Metadata components to serialize

out -

version -

Throws:

IOException

deserialize

Map<MetadataType,MetadataComponent> deserialize(Descriptor descriptor,
 EnumSet<MetadataType> types)
                                         throws IOException

Deserialize specified metadata components from given descriptor.

Parameters:

descriptor - SSTable descriptor

Returns:

Deserialized metadata components, in deserialized order.

Throws:

IOException

deserialize

MetadataComponent deserialize(Descriptor descriptor,
 MetadataType type)
                       throws IOException

Deserialized only metadata component specified from given descriptor.

Parameters:

descriptor - SSTable descriptor

type - Metadata component type to deserialize

Returns:

Deserialized metadata component. Can be null if specified type does not exist.

Throws:

IOException

mutate

void mutate(Descriptor descriptor,
 String description,
 UnaryOperator<StatsMetadata> transform)
     throws IOException

Mutate SSTable Metadata NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Parameters:

descriptor - SSTable descriptor

description - on changed attributions

transform - function to mutate sstable metadata

Throws:

IOException

mutateLevel

void mutateLevel(Descriptor descriptor,
 int newLevel)
          throws IOException

Mutate SSTable level NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Parameters:

descriptor - SSTable descriptor

newLevel - new SSTable level

Throws:

IOException

mutateRepairMetadata

void mutateRepairMetadata(Descriptor descriptor,
 long newRepairedAt,
 TimeUUID newPendingRepair,
 boolean isTransient)
                   throws IOException

Mutate the repairedAt time, pendingRepair ID, and transient status. NOTE: mutating stats metadata of a live sstable will race with entire-sstable-streaming, please use SSTableReader.mutateLevelAndReload(int) instead on live sstable.

Throws:

IOException

rewriteSSTableMetadata

void rewriteSSTableMetadata(Descriptor descriptor,
 Map<MetadataType,MetadataComponent> currentComponents)
                     throws IOException

Replace the sstable metadata file (-Statistics.db) with the given components.

Throws:

IOException