org.apache.ignite.internal

Class IgniteKernal

java.lang.Object

org.apache.ignite.internal.IgniteKernal

All Implemented Interfaces:

Externalizable, Serializable, AutoCloseable, Ignite, IgniteEx, IgniteMXBean

public class IgniteKernal
extends Object
implements IgniteEx, IgniteMXBean, Externalizable

Ignite kernal.

See http://en.wikipedia.org/wiki/Kernal for information on the misspelling.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IgniteKernal() No-arg constructor is required by externalization.
IgniteKernal(GridSpringResourceContext rsrcCtx)

Method Summary

Methods

Modifier and Type	Method and Description
<K> CacheAffinity<K>	affinity(String cacheName) Gets affinity service to provide information about data partitioning and distribution.
boolean	allEventsUserRecordable(int[] types) Checks whether all provided events are user-recordable.
IgniteAtomicLong	atomicLong(String name, long initVal, boolean create) Will get a atomic long from cache and create one if it has not been created yet and create flag is true.
<T> IgniteAtomicReference<T>	atomicReference(String name, T initVal, boolean create) Will get a atomic reference from cache and create one if it has not been created yet and create flag is true.
IgniteAtomicSequence	atomicSequence(String name, long initVal, boolean create) Will get an atomic sequence from cache and create one if it has not been created yet and create flag is true.
<T,S> IgniteAtomicStamped<T,S>	atomicStamped(String name, T initVal, S initStamp, boolean create) Will get a atomic stamped from cache and create one if it has not been created yet and create flag is true.
<K,V> GridCache<K,V>	cache(String name)
Collection<GridCache<?,?>>	caches()
Collection<GridCache<?,?>>	cachesx(IgnitePredicate<? super GridCache<?,?>>[] p) Gets configured cache instance that satisfy all provided predicates including non-public caches.
<K,V> GridCache<K,V>	cachex() Gets default cache instance if one is configured or null otherwise returning even non-public caches.
<K,V> GridCache<K,V>	cachex(String name) Gets the cache instance for the given name if one is configured or null otherwise returning even non-public caches.
void	close() Closes this instance of grid.
IgniteClusterEx	cluster() Gets an instance of IgniteCluster interface.
Collection<String>	compatibleVersions() Gets list of compatible versions.
IgniteCompute	compute() Gets compute functionality over this grid projection.
IgniteCompute	compute(ClusterGroup grp)
IgniteConfiguration	configuration() Gets the configuration of this grid instance.
GridKernalContext	context() It's intended for use by internal marshalling implementation only.
IgniteCountDownLatch	countDownLatch(String name, int cnt, boolean autoDel, boolean create) Gets or creates count down latch.
<K,V> IgniteDataStreamer<K,V>	dataStreamer(String cacheName) Gets a new instance of data streamer associated with given cache name.
IgniteEvents	events() Gets events functionality over this grid projection.
IgniteEvents	events(ClusterGroup grp)
boolean	eventUserRecordable(int type) Checks if the event type is user-recordable.
String	executeTask(String taskName, String arg) A shortcut method that executes given task assuming single java.lang.String argument and java.lang.String return type.
ExecutorService	executorService() Creates new ExecutorService which will execute all submitted Callable and Runnable jobs on nodes in this grid projection.
ExecutorService	executorService(ClusterGroup grp)
IgniteFileSystem	fileSystem(String name) Gets an instance of IGFS (Ignite In-Memory File System).
Collection<IgniteFileSystem>	fileSystems() Gets all instances of IGFS (Ignite In-Memory File System).
String	getCheckpointSpiFormatted() Gets a formatted instance of configured checkpoint SPI implementation.
String	getCollisionSpiFormatted() Gets a formatted instance of configured collision SPI implementations.
String	getCommunicationSpiFormatted() Gets a formatted instance of fully configured SPI communication implementation.
String	getCopyright() Gets copyright statement for Ignite product.
String	getDeploymentSpiFormatted() Gets a formatted instance of fully configured deployment SPI implementation.
String	getDiscoverySpiFormatted() Gets a formatted instance of configured discovery SPI implementation.
String	getEventStorageSpiFormatted() Gets a formatted instance of fully configured event SPI implementation.
String	getExecutorServiceFormatted() Gets a formatted instance of fully configured thread pool that is used in grid.
String	getFailoverSpiFormatted() Gets a formatted instance of fully configured failover SPI implementations.
String	getFullVersion() Gets string presentation of the version.
String	getGridLoggerFormatted() Gets a formatted instance of logger that is in grid.
String	getIgniteHome() Gets Ignite installation home folder.
String	getInstanceName() Gets optional kernal instance name.
String	getJdkInformation() Gets JDK information.
Collection<String>	getLifecycleBeansFormatted() Gets toString() representation of of lifecycle beans configured with Ignite.
String	getLoadBalancingSpiFormatted() Gets a formatted instance of fully configured load balancing SPI implementations.
UUID	getLocalNodeId() Unique identifier for this node within grid.
String	getMBeanServerFormatted() Gets a formatted instance of MBean server instance.
String	getOsInformation() Gets OS information.
String	getOsUser() Gets OS user.
long	getStartTimestamp() Get start timestamp of the kernal.
String	getStartTimestampFormatted() Gets string presentation of the kernal start timestamp.
String	getSwapSpaceSpiFormatted() Gets a formatted instance of configured swapspace SPI implementations.
long	getUpTime() Gets up-time of the kernal.
String	getUpTimeFormatted() Gets string presentation of up-time for the kernal.
Collection<String>	getUserAttributesFormatted() Gets a collection of formatted user-defined attributes added to this node.
String	getVmName() Gets VM name.
Hadoop	hadoop() Get Hadoop facade.
IgniteFileSystem	igfsx(String name) Get IGFS instance returning null if it doesn't exist.
<K,V> GridCacheAdapter<K,V>	internalCache() USED ONLY FOR TESTING.
<K,V> GridCacheAdapter<K,V>	internalCache(String name) USED ONLY FOR TESTING.
boolean	isJmxRemoteEnabled() Whether or not remote JMX management is enabled for this node.
boolean	isPeerClassLoadingEnabled() Returns true if peer class loading is enabled, false otherwise.
boolean	isRestartEnabled() Whether or not node restart is enabled.
<K,V> IgniteCache<K,V>	jcache(String name) Gets an instance of IgniteCache API.
String	latestVersion() Get latest version in string form.
ClusterNode	localNode() Gets local grid node.
IgniteLogger	log() Gets grid's logger.
IgniteMessaging	message() Gets messaging functionality over this grid projection.
IgniteMessaging	message(ClusterGroup prj)
String	name() Gets the name of the grid this grid instance (and correspondingly its local node) belongs to.
boolean	pingNode(String nodeId) Pings node with given node ID to see whether it is alive.
boolean	pingNodeByAddress(String host) Pings node with given host name to see if it is alive.
<T extends IgnitePlugin> T	plugin(String name) Gets an instance of deployed Ignite plugin.
void	printLastErrors() Prints errors.
<T> IgniteQueue<T>	queue(String name, int cap, CollectionConfiguration cfg) Will get a named queue from cache and create one if it has not been created yet and cfg is not null.
void	readExternal(ObjectInput in)
protected Object	readResolve()
boolean	removeCheckpoint(String key) This method allows manually remove the checkpoint with given key.
IgniteScheduler	scheduler() Gets an instance of cron-based scheduler.
IgniteServices	services() Gets services functionality over this grid projection.
IgniteServices	services(ClusterGroup grp)
<T> IgniteSet<T>	set(String name, CollectionConfiguration cfg) Will get a named set from cache and create one if it has not been created yet and cfg is not null.
void	start(IgniteConfiguration cfg, ExecutorService utilityCachePool, ExecutorService marshCachePool, ExecutorService execSvc, ExecutorService sysExecSvc, ExecutorService p2pExecSvc, ExecutorService mgmtExecSvc, ExecutorService igfsExecSvc, ExecutorService restExecSvc, GridAbsClosure errHnd)
void	stop(boolean cancel) Stops grid instance.
IgniteStreamer	streamer(String name) Gets an instance of streamer by name, if one does not exist then IllegalArgumentException will be thrown.
Collection<IgniteStreamer>	streamers() Gets all instances of streamers.
String	toString()
IgniteTransactions	transactions() Gets grid transactions facade.
void	undeployTaskFromGrid(String taskName) Makes the best attempt to undeploy a task from the whole grid.
<K extends GridCacheUtilityKey,V> GridCacheProjectionEx<K,V>	utilityCache(Class<K> keyCls, Class<V> valCls) Gets utility cache.
IgniteProductVersion	version() Gets Ignite version.
void	writeExternal(ObjectOutput out)

Methods inherited from class java.lang.Object

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

Constructor Detail

IgniteKernal

public IgniteKernal()

No-arg constructor is required by externalization.

IgniteKernal

public IgniteKernal(@Nullable
            GridSpringResourceContext rsrcCtx)

Parameters:

rsrcCtx - Optional Spring application context.

Method Detail

cluster

public IgniteClusterEx cluster()

Gets an instance of IgniteCluster interface.

Specified by:

cluster in interface Ignite

Specified by:

cluster in interface IgniteEx

Returns:

Instance of IgniteCluster interface.

localNode

public ClusterNode localNode()

Gets local grid node.

Specified by:

localNode in interface IgniteEx

Returns:

Local grid node.

compute

public IgniteCompute compute()

Gets compute functionality over this grid projection. All operations on the returned IgniteCompute instance will only include nodes from this projection.

Specified by:

compute in interface Ignite

Returns:

Compute instance over this grid projection.

message

public IgniteMessaging message()

Gets messaging functionality over this grid projection. All operations on the returned IgniteMessaging instance will only include nodes from this projection.

Specified by:

message in interface Ignite

Returns:

Messaging instance over this grid projection.

events

public IgniteEvents events()

Gets events functionality over this grid projection. All operations on the returned IgniteEvents instance will only include nodes from this projection.

Specified by:

events in interface Ignite

Returns:

Events instance over this grid projection.

services

public IgniteServices services()

Gets services functionality over this grid projection. All operations on the returned IgniteMessaging instance will only include nodes from this projection.

Specified by:

services in interface Ignite

Returns:

Services instance over this grid projection.

executorService

public ExecutorService executorService()

Creates new ExecutorService which will execute all submitted Callable and Runnable jobs on nodes in this grid projection. This essentially creates a Distributed Thread Pool that can be used as a replacement for local thread pools.

Specified by:

executorService in interface Ignite

Returns:

Grid-enabled ExecutorService.

compute

public final IgniteCompute compute(ClusterGroup grp)

Specified by:

compute in interface Ignite

Parameters:

grp - Cluster group..

Returns:

Compute instance over given cluster group.

message

public final IgniteMessaging message(ClusterGroup prj)

Specified by:

message in interface Ignite

Parameters:

prj - Cluster group.

Returns:

Messaging instance over given cluster group.

events

public final IgniteEvents events(ClusterGroup grp)

Specified by:

events in interface Ignite

Parameters:

grp - Cluster group.

Returns:

Events instance over given cluster group.

services

public IgniteServices services(ClusterGroup grp)

Specified by:

services in interface Ignite

Parameters:

grp - Cluster group.

Returns:

Services functionality over given cluster group.

executorService

public ExecutorService executorService(ClusterGroup grp)

Specified by:

executorService in interface Ignite

Parameters:

grp - Cluster group.

Returns:

ExecutorService which will execute jobs on nodes in given cluster group.

name

public String name()

Gets the name of the grid this grid instance (and correspondingly its local node) belongs to. Note that single Java VM can have multiple grid instances all belonging to different grids. Grid name allows to indicate to what grid this particular grid instance (i.e. grid runtime and its local node) belongs to.

If default grid instance is used, then null is returned. Refer to Ignition documentation for information on how to start named grids.

Specified by:

name in interface Ignite

Returns:

Name of the grid, or null for default grid.

getCopyright

public String getCopyright()

Gets copyright statement for Ignite product.

Specified by:

getCopyright in interface IgniteMXBean

Returns:

Copyright statement for Ignite product.

getStartTimestamp

public long getStartTimestamp()

Get start timestamp of the kernal.

Specified by:

getStartTimestamp in interface IgniteMXBean

Returns:

Start timestamp of the kernal.

getStartTimestampFormatted

public String getStartTimestampFormatted()

Gets string presentation of the kernal start timestamp.

Specified by:

getStartTimestampFormatted in interface IgniteMXBean

Returns:

String presentation of the kernal start timestamp.

getUpTime

public long getUpTime()

Gets up-time of the kernal.

Specified by:

getUpTime in interface IgniteMXBean

Returns:

Up-time of the kernal.

getUpTimeFormatted

public String getUpTimeFormatted()

Gets string presentation of up-time for the kernal.

Specified by:

getUpTimeFormatted in interface IgniteMXBean

Returns:

String presentation of up-time for the kernal.

getFullVersion

public String getFullVersion()

Gets string presentation of the version.

Specified by:

getFullVersion in interface IgniteMXBean

Returns:

String presentation of the version.

getCheckpointSpiFormatted

public String getCheckpointSpiFormatted()

Gets a formatted instance of configured checkpoint SPI implementation.

Specified by:

getCheckpointSpiFormatted in interface IgniteMXBean

Returns:

Grid checkpoint SPI implementation.

getSwapSpaceSpiFormatted

public String getSwapSpaceSpiFormatted()

Gets a formatted instance of configured swapspace SPI implementations.

Specified by:

getSwapSpaceSpiFormatted in interface IgniteMXBean

Returns:

Grid swapspace SPI implementations.

getCommunicationSpiFormatted

public String getCommunicationSpiFormatted()

Gets a formatted instance of fully configured SPI communication implementation.

Specified by:

getCommunicationSpiFormatted in interface IgniteMXBean

Returns:

Grid communication SPI implementation.

getDeploymentSpiFormatted

public String getDeploymentSpiFormatted()

Gets a formatted instance of fully configured deployment SPI implementation.

Specified by:

getDeploymentSpiFormatted in interface IgniteMXBean

Returns:

Grid deployment SPI implementation.

getDiscoverySpiFormatted

public String getDiscoverySpiFormatted()

Gets a formatted instance of configured discovery SPI implementation.

Specified by:

getDiscoverySpiFormatted in interface IgniteMXBean

Returns:

Grid discovery SPI implementation.

getEventStorageSpiFormatted

public String getEventStorageSpiFormatted()

Gets a formatted instance of fully configured event SPI implementation.

Specified by:

getEventStorageSpiFormatted in interface IgniteMXBean

Returns:

Grid event SPI implementation.

getCollisionSpiFormatted

public String getCollisionSpiFormatted()

Gets a formatted instance of configured collision SPI implementations.

Specified by:

getCollisionSpiFormatted in interface IgniteMXBean

Returns:

Grid collision SPI implementations.

getFailoverSpiFormatted

public String getFailoverSpiFormatted()

Gets a formatted instance of fully configured failover SPI implementations.

Specified by:

getFailoverSpiFormatted in interface IgniteMXBean

Returns:

Grid failover SPI implementations.

getLoadBalancingSpiFormatted

public String getLoadBalancingSpiFormatted()

Gets a formatted instance of fully configured load balancing SPI implementations.

Specified by:

getLoadBalancingSpiFormatted in interface IgniteMXBean

Returns:

Grid load balancing SPI implementations.

getOsInformation

public String getOsInformation()

Gets OS information.

Specified by:

getOsInformation in interface IgniteMXBean

Returns:

OS information.

getJdkInformation

public String getJdkInformation()

Gets JDK information.

Specified by:

getJdkInformation in interface IgniteMXBean

Returns:

JDK information.

getOsUser

public String getOsUser()

Gets OS user.

Specified by:

getOsUser in interface IgniteMXBean

Returns:

OS user name.

printLastErrors

public void printLastErrors()

Prints errors.

Specified by:

printLastErrors in interface IgniteMXBean

getVmName

public String getVmName()

Gets VM name.

Specified by:

getVmName in interface IgniteMXBean

Returns:

VM name.

getInstanceName

public String getInstanceName()

Gets optional kernal instance name. It can be null.

Specified by:

getInstanceName in interface IgniteMXBean

Returns:

Optional kernal instance name.

getExecutorServiceFormatted

public String getExecutorServiceFormatted()

Gets a formatted instance of fully configured thread pool that is used in grid.

Specified by:

getExecutorServiceFormatted in interface IgniteMXBean

Returns:

Thread pool implementation that is used in grid.

getIgniteHome

public String getIgniteHome()

Gets Ignite installation home folder.

Specified by:

getIgniteHome in interface IgniteMXBean

Returns:

Ignite installation home.

getGridLoggerFormatted

public String getGridLoggerFormatted()

Gets a formatted instance of logger that is in grid.

Specified by:

getGridLoggerFormatted in interface IgniteMXBean

Returns:

Logger that is used in grid.

getMBeanServerFormatted

public String getMBeanServerFormatted()

Gets a formatted instance of MBean server instance.

Specified by:

getMBeanServerFormatted in interface IgniteMXBean

Returns:

MBean server instance.

getLocalNodeId

public UUID getLocalNodeId()

Unique identifier for this node within grid.

Specified by:

getLocalNodeId in interface IgniteMXBean

Returns:

Unique identifier for this node within grid.

getUserAttributesFormatted

public Collection<String> getUserAttributesFormatted()

Gets a collection of formatted user-defined attributes added to this node.

Note that grid will add all System properties and environment properties to grid node attributes also. SPIs may also add node attributes that are used for SPI implementation.

Specified by:

getUserAttributesFormatted in interface IgniteMXBean

Returns:

User defined attributes for this node.

isPeerClassLoadingEnabled

public boolean isPeerClassLoadingEnabled()

Returns true if peer class loading is enabled, false otherwise. Default value is true.

When peer class loading is enabled and task is not deployed on local node, local node will try to load classes from the node that initiated task execution. This way, a task can be physically deployed only on one node and then internally penetrate to all other nodes.

Specified by:

isPeerClassLoadingEnabled in interface IgniteMXBean

Returns:

true if peer class loading is enabled, false otherwise.

getLifecycleBeansFormatted

public Collection<String> getLifecycleBeansFormatted()

Gets toString() representation of of lifecycle beans configured with Ignite.

Specified by:

getLifecycleBeansFormatted in interface IgniteMXBean

Returns:

toString() representation of all lifecycle beans configured with Ignite.

start

public void start(IgniteConfiguration cfg,
         ExecutorService utilityCachePool,
         ExecutorService marshCachePool,
         ExecutorService execSvc,
         ExecutorService sysExecSvc,
         ExecutorService p2pExecSvc,
         ExecutorService mgmtExecSvc,
         ExecutorService igfsExecSvc,
         ExecutorService restExecSvc,
         GridAbsClosure errHnd)
           throws IgniteCheckedException

Parameters:

cfg - Configuration to use.

utilityCachePool - Utility cache pool.

execSvc - Executor service.

sysExecSvc - System executor service.

p2pExecSvc - P2P executor service.

mgmtExecSvc - Management executor service.

igfsExecSvc - IGFS executor service.

restExecSvc - Reset executor service.

errHnd - Error handler to use for notification about startup problems.

Throws:

IgniteCheckedException - Thrown in case of any errors.

stop

public void stop(boolean cancel)

Stops grid instance.

Parameters:

cancel - Whether or not to cancel running jobs.

internalCache

public <K,V> GridCacheAdapter<K,V> internalCache()

USED ONLY FOR TESTING.

Type Parameters:

K - Key type.

V - Value type.

Returns:

Internal cache instance.

internalCache

public <K,V> GridCacheAdapter<K,V> internalCache(@Nullable
                                        String name)

USED ONLY FOR TESTING.

Type Parameters:

K - Key type.

V - Value type.

Parameters:

name - Cache name.

Returns:

Internal cache instance.

context

public GridKernalContext context()

It's intended for use by internal marshalling implementation only.

Returns:

Kernal context.

isJmxRemoteEnabled

public boolean isJmxRemoteEnabled()

Whether or not remote JMX management is enabled for this node. Remote JMX management is enabled when the following system property is set:

• com.sun.management.jmxremote

Specified by:

isJmxRemoteEnabled in interface IgniteEx

Returns:

True if remote JMX management is enabled - false otherwise.

isRestartEnabled

public boolean isRestartEnabled()

Whether or not node restart is enabled. Node restart us supported when this node was started with bin/ignite.{sh|bat} script using -r argument. Node can be programmatically restarted using Ignition.restart(boolean)} method.

Specified by:

isRestartEnabled in interface IgniteEx

Returns:

True if restart mode is enabled, false otherwise.

See Also:

Ignition.restart(boolean)

configuration

public IgniteConfiguration configuration()

Gets the configuration of this grid instance.

NOTE:
SPIs obtains through this method should never be used directly. SPIs provide internal view on the subsystem and is used internally by Ignite kernal. In rare use cases when access to a specific implementation of this SPI is required - an instance of this SPI can be obtained via this method to check its configuration properties or call other non-SPI methods.

Specified by:

configuration in interface Ignite

Returns:

Grid configuration instance.

log

public IgniteLogger log()

Gets grid's logger.

Specified by:

log in interface Ignite

Returns:

Grid's logger.

removeCheckpoint

public boolean removeCheckpoint(String key)

This method allows manually remove the checkpoint with given key.

Specified by:

removeCheckpoint in interface IgniteMXBean

Parameters:

key - Checkpoint key.

Returns:

true if specified checkpoint was indeed removed, false otherwise.

pingNode

public boolean pingNode(String nodeId)

Pings node with given node ID to see whether it is alive.

Specified by:

pingNode in interface IgniteMXBean

Parameters:

nodeId - String presentation of node ID. See UUID.fromString(String) for details on string formatting.

Returns:

Whether or not node is alive.

undeployTaskFromGrid

public void undeployTaskFromGrid(String taskName)
                          throws JMException

Makes the best attempt to undeploy a task from the whole grid. Note that this method returns immediately and does not wait until the task will actually be undeployed on every node.

Note that Ignite maintains internal versions for grid tasks in case of redeployment. This method will attempt to undeploy all versions on the grid task with given name.

Specified by:

undeployTaskFromGrid in interface IgniteMXBean

Parameters:

taskName - Name of the task to undeploy. If task class has ComputeTaskName annotation, then task was deployed under a name specified within annotation. Otherwise, full class name should be used as task's name.

Throws:

JMException - Thrown if undeploy failed.

executeTask

public String executeTask(String taskName,
                 String arg)
                   throws JMException

A shortcut method that executes given task assuming single java.lang.String argument and java.lang.String return type.

Specified by:

executeTask in interface IgniteMXBean

Parameters:

taskName - Name of the task to execute.

arg - Single task execution argument (can be null).

Returns:

Task return value (assumed of java.lang.String type).

Throws:

JMException - Thrown in case when execution failed.

pingNodeByAddress

public boolean pingNodeByAddress(String host)

Pings node with given host name to see if it is alive.

Specified by:

pingNodeByAddress in interface IgniteMXBean

Parameters:

host - Host name or IP address of the node to ping.

Returns:

Whether or not node is alive.

eventUserRecordable

public boolean eventUserRecordable(int type)

Checks if the event type is user-recordable.

Specified by:

eventUserRecordable in interface IgniteEx

Parameters:

type - Event type to check.

Returns:

true if passed event should be recorded, false - otherwise.

allEventsUserRecordable

public boolean allEventsUserRecordable(int[] types)

Checks whether all provided events are user-recordable.

Note that this method supports only predefined Ignite events.

Specified by:

allEventsUserRecordable in interface IgniteEx

Parameters:

types - Event types.

Returns:

Whether all events are recordable.

transactions

public IgniteTransactions transactions()

Gets grid transactions facade.

Specified by:

transactions in interface Ignite

Returns:

Grid transactions facade.

cache

public <K,V> GridCache<K,V> cache(@Nullable
                         String name)

Parameters:

name - Cache name.

Returns:

Cache.

jcache

public <K,V> IgniteCache<K,V> jcache(@Nullable
                            String name)

Gets an instance of IgniteCache API. IgniteCache is a fully-compatible implementation of JCache (JSR 107) specification.

Specified by:

jcache in interface Ignite

Parameters:

name - Cache name.

Returns:

Instance of the cache for the specified name.

caches

public Collection<GridCache<?,?>> caches()

Returns:

Public caches.

utilityCache

public <K extends GridCacheUtilityKey,V> GridCacheProjectionEx<K,V> utilityCache(Class<K> keyCls,
                                                                        Class<V> valCls)

Gets utility cache.

Specified by:

utilityCache in interface IgniteEx

Parameters:

keyCls - Key class.

valCls - Value class.

Returns:

Utility cache.

cachex

public <K,V> GridCache<K,V> cachex(@Nullable
                          String name)

Gets the cache instance for the given name if one is configured or null otherwise returning even non-public caches.

Specified by:

cachex in interface IgniteEx

Type Parameters:

K - Key type.

V - Value type.

Parameters:

name - Cache name.

Returns:

Cache instance for given name or null if one does not exist.

cachex

public <K,V> GridCache<K,V> cachex()

Gets default cache instance if one is configured or null otherwise returning even non-public caches. The CacheProjection.name() method on default instance returns null.

Specified by:

cachex in interface IgniteEx

Type Parameters:

K - Key type.

V - Value type.

Returns:

Default cache instance.

cachesx

public Collection<GridCache<?,?>> cachesx(IgnitePredicate<? super GridCache<?,?>>[] p)

Gets configured cache instance that satisfy all provided predicates including non-public caches. If no predicates provided - all configured caches will be returned.

Specified by:

cachesx in interface IgniteEx

Parameters:

p - Predicates. If none provided - all configured caches will be returned.

Returns:

Configured cache instances that satisfy all provided predicates.

dataStreamer

public <K,V> IgniteDataStreamer<K,V> dataStreamer(@Nullable
                                         String cacheName)

Gets a new instance of data streamer associated with given cache name. Data streamer is responsible for loading external data into in-memory data grid. For more information refer to IgniteDataStreamer documentation.

Specified by:

dataStreamer in interface Ignite

Parameters:

cacheName - Cache name (null for default cache).

Returns:

Data streamer.

fileSystem

public IgniteFileSystem fileSystem(String name)

Gets an instance of IGFS (Ignite In-Memory File System). If one is not configured then IllegalArgumentException will be thrown.

IGFS is fully compliant with Hadoop FileSystem APIs and can be plugged into Hadoop installations. For more information refer to documentation on Hadoop integration shipped with Ignite.

Specified by:

fileSystem in interface Ignite

Parameters:

name - IGFS name.

Returns:

IGFS instance.

igfsx

@Nullable
public IgniteFileSystem igfsx(@Nullable
                              String name)

Get IGFS instance returning null if it doesn't exist.

Specified by:

igfsx in interface IgniteEx

Parameters:

name - IGFS name.

Returns:

IGFS.

fileSystems

public Collection<IgniteFileSystem> fileSystems()

Gets all instances of IGFS (Ignite In-Memory File System).

Specified by:

fileSystems in interface Ignite

Returns:

Collection of IGFS instances.

hadoop

public Hadoop hadoop()

Get Hadoop facade.

Specified by:

hadoop in interface IgniteEx

Returns:

Hadoop.

plugin

public <T extends IgnitePlugin> T plugin(String name)
                              throws PluginNotFoundException

Gets an instance of deployed Ignite plugin.

Specified by:

plugin in interface Ignite

Type Parameters:

T - Plugin type.

Parameters:

name - Plugin name.

Returns:

Plugin instance.

Throws:

PluginNotFoundException - If plugin for the given name was not found.

streamer

public IgniteStreamer streamer(@Nullable
                      String name)

Gets an instance of streamer by name, if one does not exist then IllegalArgumentException will be thrown.

Specified by:

streamer in interface Ignite

Parameters:

name - Streamer name.

Returns:

Streamer for given name.

streamers

public Collection<IgniteStreamer> streamers()

Gets all instances of streamers.

Specified by:

streamers in interface Ignite

Returns:

Collection of all streamer instances.

version

public IgniteProductVersion version()

Gets Ignite version.

Specified by:

version in interface Ignite

Returns:

Ignite version.

latestVersion

public String latestVersion()

Get latest version in string form.

Specified by:

latestVersion in interface IgniteEx

Returns:

Latest version.

scheduler

public IgniteScheduler scheduler()

Gets an instance of cron-based scheduler.

Specified by:

scheduler in interface Ignite

Returns:

Instance of scheduler.

compatibleVersions

public Collection<String> compatibleVersions()

Gets list of compatible versions.

Specified by:

compatibleVersions in interface IgniteEx

Returns:

Compatible versions.

close

public void close()
           throws IgniteException

Closes this instance of grid. This method is identical to calling G.stop(gridName, true).

The method is invoked automatically on objects managed by the try-with-resources statement.

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Ignite

Throws:

IgniteException - If failed to stop grid.

affinity

public <K> CacheAffinity<K> affinity(String cacheName)

Gets affinity service to provide information about data partitioning and distribution.

Specified by:

affinity in interface Ignite

Type Parameters:

K - Cache key type.

Parameters:

cacheName - Cache name.

Returns:

Affinity.

atomicSequence

@Nullable
public IgniteAtomicSequence atomicSequence(String name,
                                           long initVal,
                                           boolean create)

Will get an atomic sequence from cache and create one if it has not been created yet and create flag is true.

Specified by:

atomicSequence in interface Ignite

Parameters:

name - Sequence name.

initVal - Initial value for sequence. Ignored if create flag is false.

create - Boolean flag indicating whether data structure should be created if does not exist.

Returns:

Sequence for the given name.

atomicLong

@Nullable
public IgniteAtomicLong atomicLong(String name,
                                   long initVal,
                                   boolean create)

Will get a atomic long from cache and create one if it has not been created yet and create flag is true.

Specified by:

atomicLong in interface Ignite

Parameters:

name - Name of atomic long.

initVal - Initial value for atomic long. Ignored if create flag is false.

create - Boolean flag indicating whether data structure should be created if does not exist.

Returns:

Atomic long.

atomicReference

@Nullable
public <T> IgniteAtomicReference<T> atomicReference(String name,
                                                    @Nullable
                                                    T initVal,
                                                    boolean create)

Will get a atomic reference from cache and create one if it has not been created yet and create flag is true.

Specified by:

atomicReference in interface Ignite

Parameters:

name - Atomic reference name.

initVal - Initial value for atomic reference. Ignored if create flag is false.

create - Boolean flag indicating whether data structure should be created if does not exist.

Returns:

Atomic reference for the given name.

atomicStamped

@Nullable
public <T,S> IgniteAtomicStamped<T,S> atomicStamped(String name,
                                                    @Nullable
                                                    T initVal,
                                                    @Nullable
                                                    S initStamp,
                                                    boolean create)

Will get a atomic stamped from cache and create one if it has not been created yet and create flag is true.

Specified by:

atomicStamped in interface Ignite

Parameters:

name - Atomic stamped name.

initVal - Initial value for atomic stamped. Ignored if create flag is false.

initStamp - Initial stamp for atomic stamped. Ignored if create flag is false.

create - Boolean flag indicating whether data structure should be created if does not exist.

Returns:

Atomic stamped for the given name.

countDownLatch

@Nullable
public IgniteCountDownLatch countDownLatch(String name,
                                           int cnt,
                                           boolean autoDel,
                                           boolean create)

Gets or creates count down latch. If count down latch is not found in cache and create flag is true, it is created using provided name and count parameter.

Specified by:

countDownLatch in interface Ignite

Parameters:

name - Name of the latch.

cnt - Count for new latch creation. Ignored if create flag is false.

autoDel - True to automatically delete latch from cache when its count reaches zero. Ignored if create flag is false.

create - Boolean flag indicating whether data structure should be created if does not exist.

Returns:

Count down latch for the given name.

queue

@Nullable
public <T> IgniteQueue<T> queue(String name,
                                int cap,
                                CollectionConfiguration cfg)

Will get a named queue from cache and create one if it has not been created yet and cfg is not null. If queue is present already, queue properties will not be changed. Use collocation for CacheMode.PARTITIONED caches if you have lots of relatively small queues as it will make fetching, querying, and iteration a lot faster. If you have few very large queues, then you should consider turning off collocation as they simply may not fit in a single node's memory.

Specified by:

queue in interface Ignite

Parameters:

name - Name of queue.

cap - Capacity of queue, 0 for unbounded queue. Ignored if cfg is null.

cfg - Queue configuration if new queue should be created.

Returns:

Queue with given properties.

set

@Nullable
public <T> IgniteSet<T> set(String name,
                            CollectionConfiguration cfg)

Will get a named set from cache and create one if it has not been created yet and cfg is not null.

Specified by:

set in interface Ignite

Parameters:

name - Set name.

cfg - Set configuration if new set should be created.

Returns:

Set with given properties.

readExternal

public void readExternal(ObjectInput in)
                  throws IOException,
                         ClassNotFoundException

Specified by:

readExternal in interface Externalizable

Throws:

IOException

ClassNotFoundException

writeExternal

public void writeExternal(ObjectOutput out)
                   throws IOException

Specified by:

writeExternal in interface Externalizable

Throws:

IOException

readResolve

protected Object readResolve()
                      throws ObjectStreamException

Returns:

IgniteKernal instance.

Throws:

ObjectStreamException - If failed.

toString

public String toString()

Overrides:

toString in class Object