org.gridgain.grid.kernal.processors.affinity

Class GridAffinityProcessor

java.lang.Object

org.gridgain.grid.kernal.processors.GridProcessorAdapter

org.gridgain.grid.kernal.processors.affinity.GridAffinityProcessor

All Implemented Interfaces:

GridComponent, GridProcessor

public class GridAffinityProcessor
extends GridProcessorAdapter

Data affinity processor.

Field Summary

Fields inherited from class org.gridgain.grid.kernal.processors.GridProcessorAdapter

ctx, log

Constructor Summary

Constructors

Constructor and Description
GridAffinityProcessor(GridKernalContext ctx)

Method Summary

Methods

Modifier and Type	Method and Description
Object	affinityKey(String cacheName, Object key) Gets affinity key for cache key.
<K> Map<GridNode,Collection<K>>	mapKeysToNodes(Collection<? extends K> keys) Maps keys to nodes on default cache.
<K> Map<GridNode,Collection<K>>	mapKeysToNodes(String cacheName, Collection<? extends K> keys) Maps keys to nodes for given cache.
<K> GridNode	mapKeyToNode(K key) Maps single key to a node on default cache.
<K> GridNode	mapKeyToNode(String cacheName, K key) Maps single key to a node.
void	onKernalStart() Callback that notifies that kernal has successfully started, including all managers and processors.
void	onKernalStop(boolean cancel) Callback to notify that kernal is about to stop.
void	printMemoryStats() Prints memory statistics (sizes of internal structures, etc.).

Methods inherited from class org.gridgain.grid.kernal.processors.GridProcessorAdapter

addAttributes, assertParameter, collectDiscoveryData, onDiscoveryDataReceived, start, stop, toString, validateNode

Methods inherited from class java.lang.Object

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

Constructor Detail

GridAffinityProcessor

public GridAffinityProcessor(GridKernalContext ctx)

Parameters:

ctx - Context.

Method Detail

onKernalStart

public void onKernalStart()
                   throws GridException

Callback that notifies that kernal has successfully started, including all managers and processors.

Specified by:

onKernalStart in interface GridComponent

Overrides:

onKernalStart in class GridProcessorAdapter

Throws:

GridException - Thrown in case of any errors.

onKernalStop

public void onKernalStop(boolean cancel)

Callback to notify that kernal is about to stop.

Specified by:

onKernalStop in interface GridComponent

Overrides:

onKernalStop in class GridProcessorAdapter

Parameters:

cancel - Flag indicating whether jobs should be canceled.

mapKeysToNodes

public <K> Map<GridNode,Collection<K>> mapKeysToNodes(@Nullable
                                             String cacheName,
                                             @Nullable
                                             Collection<? extends K> keys)
                                           throws GridException

Maps keys to nodes for given cache.

Parameters:

cacheName - Cache name.

keys - Keys to map.

Returns:

Map of nodes to keys.

Throws:

GridException - If failed.

mapKeysToNodes

public <K> Map<GridNode,Collection<K>> mapKeysToNodes(@Nullable
                                             Collection<? extends K> keys)
                                           throws GridException

Maps keys to nodes on default cache.

Parameters:

keys - Keys to map.

Returns:

Map of nodes to keys.

Throws:

GridException - If failed.

mapKeyToNode

@Nullable
public <K> GridNode mapKeyToNode(@Nullable
                                 String cacheName,
                                 K key)
                      throws GridException

Maps single key to a node.

Parameters:

cacheName - Cache name.

key - Key to map.

Returns:

Picked node.

Throws:

GridException - If failed.

mapKeyToNode

@Nullable
public <K> GridNode mapKeyToNode(K key)
                      throws GridException

Maps single key to a node on default cache.

Parameters:

key - Key to map.

Returns:

Picked node.

Throws:

GridException - If failed.

affinityKey

@Nullable
public Object affinityKey(@Nullable
                          String cacheName,
                          @Nullable
                          Object key)
                   throws GridException

Gets affinity key for cache key.

Parameters:

cacheName - Cache name.

key - Cache key.

Returns:

Affinity key.

Throws:

GridException - In case of error.

printMemoryStats

public void printMemoryStats()

Prints memory statistics (sizes of internal structures, etc.). NOTE: this method is for testing and profiling purposes only.

Specified by:

printMemoryStats in interface GridComponent

Overrides:

printMemoryStats in class GridProcessorAdapter