org.apache.ignite.internal.processors.cache

Class GridCacheAffinityManager

java.lang.Object

org.apache.ignite.internal.processors.cache.GridCacheManagerAdapter

org.apache.ignite.internal.processors.cache.GridCacheAffinityManager

All Implemented Interfaces:

GridCacheManager

public class GridCacheAffinityManager
extends GridCacheManagerAdapter

Cache affinity manager.

Field Summary

Fields inherited from class org.apache.ignite.internal.processors.cache.GridCacheManagerAdapter

cctx, log

Constructor Summary

Constructors

Constructor and Description
GridCacheAffinityManager()

Method Summary

Methods

Modifier and Type	Method and Description
IgniteInternalFuture<AffinityTopologyVersion>	affinityReadyFuture(AffinityTopologyVersion topVer) Gets affinity ready future, a future that will be completed after affinity with given topology version is calculated.
IgniteInternalFuture<AffinityTopologyVersion>	affinityReadyFuture(long topVer) Gets affinity ready future, a future that will be completed after affinity with given topology version is calculated.
IgniteInternalFuture<AffinityTopologyVersion>	affinityReadyFuturex(AffinityTopologyVersion topVer) Gets affinity ready future that will be completed after affinity with given topology version is calculated.
AffinityTopologyVersion	affinityTopologyVersion()
List<List<ClusterNode>>	assignments(AffinityTopologyVersion topVer)
Set<Integer>	backupPartitions(UUID nodeId, AffinityTopologyVersion topVer)
Collection<ClusterNode>	backups(int part, AffinityTopologyVersion topVer)
Collection<ClusterNode>	backups(Object key, AffinityTopologyVersion topVer)
boolean	belongs(ClusterNode node, int part, AffinityTopologyVersion topVer)
List<List<ClusterNode>>	calculateAffinity(AffinityTopologyVersion topVer, DiscoveryEvent discoEvt) Calculates affinity cache for given topology version.
void	cleanUpCache(AffinityTopologyVersion topVer) Clean up outdated cache items.
void	clientEventTopologyChange(DiscoveryEvent evt, AffinityTopologyVersion topVer) Copies previous affinity assignment when discovery event does not cause affinity assignment changes (e.g. client node joins on leaves).
void	initializeAffinity(AffinityTopologyVersion topVer, List<List<ClusterNode>> affAssignment) Initializes affinity for joined node.
boolean	localNode(int part, AffinityTopologyVersion topVer)
boolean	localNode(Object key, AffinityTopologyVersion topVer)
List<ClusterNode>	nodes(int part, AffinityTopologyVersion topVer)
List<ClusterNode>	nodes(Object key, AffinityTopologyVersion topVer)
void	onDisconnected(IgniteFuture reconnectFut)
protected void	onKernalStart0()
protected void	onKernalStop0(boolean cancel)
void	onReconnected()
int	partition(Object key) NOTE: Use this method always when you need to calculate partition id for a key provided by user.
int	partitions()
boolean	primary(ClusterNode n, int part, AffinityTopologyVersion topVer)
boolean	primary(ClusterNode n, Object key, AffinityTopologyVersion topVer)
ClusterNode	primary(int part, AffinityTopologyVersion topVer)
ClusterNode	primary(Object key, AffinityTopologyVersion topVer)
Set<Integer>	primaryPartitions(UUID nodeId, AffinityTopologyVersion topVer)
Collection<ClusterNode>	remoteNodes(Iterable keys, AffinityTopologyVersion topVer)
void	start0()
protected void	stop0(boolean cancel)

Methods inherited from class org.apache.ignite.internal.processors.cache.GridCacheManagerAdapter

context, kernalStartInfo, kernalStopInfo, log, onKernalStart, onKernalStop, printMemoryStats, start, startInfo, stop, stopInfo, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

GridCacheAffinityManager

public GridCacheAffinityManager()

Method Detail

start0

public void start0()
            throws IgniteCheckedException

Overrides:

start0 in class GridCacheManagerAdapter

Throws:

IgniteCheckedException - If failed.

onKernalStart0

protected void onKernalStart0()
                       throws IgniteCheckedException

Overrides:

onKernalStart0 in class GridCacheManagerAdapter

Throws:

IgniteCheckedException - If failed.

onKernalStop0

protected void onKernalStop0(boolean cancel)

Overrides:

onKernalStop0 in class GridCacheManagerAdapter

Parameters:

cancel - Cancel flag.

onDisconnected

public void onDisconnected(IgniteFuture reconnectFut)

Specified by:

onDisconnected in interface GridCacheManager

Overrides:

onDisconnected in class GridCacheManagerAdapter

Parameters:

reconnectFut - Reconnect future.

onReconnected

public void onReconnected()

stop0

protected void stop0(boolean cancel)

Overrides:

stop0 in class GridCacheManagerAdapter

Parameters:

cancel - Cancel flag.

affinityReadyFuture

public IgniteInternalFuture<AffinityTopologyVersion> affinityReadyFuture(long topVer)

Gets affinity ready future, a future that will be completed after affinity with given topology version is calculated.

Parameters:

topVer - Topology version to wait.

Returns:

Affinity ready future.

affinityReadyFuture

public IgniteInternalFuture<AffinityTopologyVersion> affinityReadyFuture(AffinityTopologyVersion topVer)

Gets affinity ready future, a future that will be completed after affinity with given topology version is calculated.

Parameters:

topVer - Topology version to wait.

Returns:

Affinity ready future.

affinityReadyFuturex

@Nullable
public IgniteInternalFuture<AffinityTopologyVersion> affinityReadyFuturex(AffinityTopologyVersion topVer)

Gets affinity ready future that will be completed after affinity with given topology version is calculated. Will return null if topology with given version is ready by the moment method is invoked.

Parameters:

topVer - Topology version to wait.

Returns:

Affinity ready future or null.

cleanUpCache

public void cleanUpCache(AffinityTopologyVersion topVer)

Clean up outdated cache items.

Parameters:

topVer - Actual topology version, older versions will be removed.

initializeAffinity

public void initializeAffinity(AffinityTopologyVersion topVer,
                      List<List<ClusterNode>> affAssignment)

Initializes affinity for joined node.

Parameters:

topVer - Topology version.

affAssignment - Affinity assignment for this topology version.

assignments

public List<List<ClusterNode>> assignments(AffinityTopologyVersion topVer)

Parameters:

topVer - Topology version.

Returns:

Affinity assignments.

calculateAffinity

public List<List<ClusterNode>> calculateAffinity(AffinityTopologyVersion topVer,
                                        DiscoveryEvent discoEvt)

Calculates affinity cache for given topology version.

Parameters:

topVer - Topology version to calculate affinity for.

discoEvt - Discovery event that causes this topology change.

Returns:

Affinity assignments.

clientEventTopologyChange

public void clientEventTopologyChange(DiscoveryEvent evt,
                             AffinityTopologyVersion topVer)

Copies previous affinity assignment when discovery event does not cause affinity assignment changes (e.g. client node joins on leaves).

Parameters:

evt - Event.

topVer - Topology version.

partitions

public int partitions()

Returns:

Partition count.

partition

public int partition(Object key)

NOTE: Use this method always when you need to calculate partition id for a key provided by user. It's required since we should apply affinity mapper logic in order to find a key that will eventually be passed to affinity function.

Parameters:

key - Key.

Returns:

Partition.

nodes

public List<ClusterNode> nodes(Object key,
                      AffinityTopologyVersion topVer)

Parameters:

key - Key.

topVer - Topology version.

Returns:

Affinity nodes.

nodes

public List<ClusterNode> nodes(int part,
                      AffinityTopologyVersion topVer)

Parameters:

part - Partition.

topVer - Topology version.

Returns:

Affinity nodes.

primary

@Nullable
public ClusterNode primary(Object key,
                           AffinityTopologyVersion topVer)

Parameters:

key - Key to check.

topVer - Topology version.

Returns:

Primary node for given key.

primary

@Nullable
public ClusterNode primary(int part,
                           AffinityTopologyVersion topVer)

Parameters:

part - Partition.

topVer - Topology version.

Returns:

Primary node for given key.

primary

public boolean primary(ClusterNode n,
              Object key,
              AffinityTopologyVersion topVer)

Parameters:

n - Node to check.

key - Key to check.

topVer - Topology version.

Returns:

True if checked node is primary for given key.

primary

public boolean primary(ClusterNode n,
              int part,
              AffinityTopologyVersion topVer)

Parameters:

n - Node to check.

part - Partition.

topVer - Topology version.

Returns:

True if checked node is primary for given key.

backups

public Collection<ClusterNode> backups(Object key,
                              AffinityTopologyVersion topVer)

Parameters:

key - Key to check.

topVer - Topology version.

Returns:

Backup nodes.

backups

public Collection<ClusterNode> backups(int part,
                              AffinityTopologyVersion topVer)

Parameters:

part - Partition.

topVer - Topology version.

Returns:

Backup nodes.

remoteNodes

public Collection<ClusterNode> remoteNodes(Iterable keys,
                                  AffinityTopologyVersion topVer)

Parameters:

keys - keys.

topVer - Topology version.

Returns:

Nodes for the keys.

localNode

public boolean localNode(Object key,
                AffinityTopologyVersion topVer)

Parameters:

key - Key to check.

topVer - Topology version.

Returns:

true if given key belongs to local node.

localNode

public boolean localNode(int part,
                AffinityTopologyVersion topVer)

Parameters:

part - Partition number to check.

topVer - Topology version.

Returns:

true if given partition belongs to local node.

belongs

public boolean belongs(ClusterNode node,
              int part,
              AffinityTopologyVersion topVer)

Parameters:

node - Node.

part - Partition number to check.

topVer - Topology version.

Returns:

true if given partition belongs to specified node.

primaryPartitions

public Set<Integer> primaryPartitions(UUID nodeId,
                             AffinityTopologyVersion topVer)

Parameters:

nodeId - Node ID.

topVer - Topology version to calculate affinity.

Returns:

Partitions for which given node is primary.

backupPartitions

public Set<Integer> backupPartitions(UUID nodeId,
                            AffinityTopologyVersion topVer)

Parameters:

nodeId - Node ID.

topVer - Topology version to calculate affinity.

Returns:

Partitions for which given node is backup.

affinityTopologyVersion

public AffinityTopologyVersion affinityTopologyVersion()

Returns:

Affinity-ready topology version.