org.infinispan.container.versioning.irac

Class DefaultIracVersionGenerator

java.lang.Object

org.infinispan.container.versioning.irac.DefaultIracVersionGenerator

All Implemented Interfaces:

Lifecycle, IracVersionGenerator

public class DefaultIracVersionGenerator
extends Object
implements IracVersionGenerator

Default implementation of IracVersionGenerator.

Since:

11.0

Author:

Pedro Ruivo

Constructor Summary

Constructors

Constructor and Description
DefaultIracVersionGenerator()

Method Summary

Modifier and Type	Method and Description
IracMetadata	generateNewMetadata(int segment) Generator a new IracMetadata for a given segment.
IracMetadata	getTombstone(Object key) Returns the tombstone associated to the key or null if it doesn't exist.
void	onTopologyChange(CacheTopology newTopology) Invoked when a topology change occurs in the cluster.
void	removeTombstone(Object key) Removes the tombstone for key.
void	removeTombstone(Object key, IracMetadata iracMetadata) Removes the tombstone for key if the metadata matches.
void	start() Invoked on component start
void	stop() Invoked on component stop
void	storeTombstone(Object key, IracMetadata metadata) Stores a tombstone for a key removed.
void	storeTombstoneIfAbsent(Object key, IracMetadata metadata) Same as IracVersionGenerator.storeTombstone(Object, IracMetadata) but it doesn't overwrite an existing tombstone.
void	updateVersion(int segment, IracEntryVersion remoteVersion) Updates the version for the segment with a new remoteVersion seen.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

DefaultIracVersionGenerator

public DefaultIracVersionGenerator()

Method Detail

start

public void start()

Description copied from interface: Lifecycle

Invoked on component start

Specified by:

start in interface Lifecycle

stop

public void stop()

Description copied from interface: Lifecycle

Invoked on component stop

Specified by:

stop in interface Lifecycle

generateNewMetadata

public IracMetadata generateNewMetadata(int segment)

Description copied from interface: IracVersionGenerator

Generator a new IracMetadata for a given segment.

The IracEntryVersion created is always higher than the previous one for the same segment.

Specified by:

generateNewMetadata in interface IracVersionGenerator

Parameters:

segment - The segment.

Returns:

The IracMetadata created.

updateVersion

public void updateVersion(int segment,
                          IracEntryVersion remoteVersion)

Description copied from interface: IracVersionGenerator

Updates the version for the segment with a new remoteVersion seen.

This method should merge both the current version internally stored and the remoteVersion to achieve an IracEntryVersion higher than both.

Specified by:

updateVersion in interface IracVersionGenerator

Parameters:

segment - The segment.

remoteVersion - The remote IracEntryVersion received.

onTopologyChange

public void onTopologyChange(CacheTopology newTopology)

Description copied from interface: IracVersionGenerator

Invoked when a topology change occurs in the cluster.

Specified by:

onTopologyChange in interface IracVersionGenerator

Parameters:

newTopology - The new CacheTopology

storeTombstone

public void storeTombstone(Object key,
                           IracMetadata metadata)

Description copied from interface: IracVersionGenerator

Stores a tombstone for a key removed.

It overwrites any existing tombstone.

Specified by:

storeTombstone in interface IracVersionGenerator

Parameters:

key - The key.

metadata - The IracMetadata.

storeTombstoneIfAbsent

public void storeTombstoneIfAbsent(Object key,
                                   IracMetadata metadata)

Description copied from interface: IracVersionGenerator

Same as IracVersionGenerator.storeTombstone(Object, IracMetadata) but it doesn't overwrite an existing tombstone.

Specified by:

storeTombstoneIfAbsent in interface IracVersionGenerator

Parameters:

key - The key.

metadata - The IracMetadata.

getTombstone

public IracMetadata getTombstone(Object key)

Description copied from interface: IracVersionGenerator

Returns the tombstone associated to the key or null if it doesn't exist.

Specified by:

getTombstone in interface IracVersionGenerator

Parameters:

key - The key.

Returns:

The tombstone.

removeTombstone

public void removeTombstone(Object key,
                            IracMetadata iracMetadata)

Description copied from interface: IracVersionGenerator

Removes the tombstone for key if the metadata matches.

Specified by:

removeTombstone in interface IracVersionGenerator

Parameters:

key - The key.

iracMetadata - The expected IracMetadata.

removeTombstone

public void removeTombstone(Object key)

Description copied from interface: IracVersionGenerator

Removes the tombstone for key.

Specified by:

removeTombstone in interface IracVersionGenerator

Parameters:

key - The key.