com.hazelcast.partition.impl

Class InternalPartitionServiceImpl

java.lang.Object

com.hazelcast.partition.impl.InternalPartitionServiceImpl

All Implemented Interfaces:

InternalPartitionService, CoreService, EventPublishingService<PartitionEvent,PartitionEventListener<PartitionEvent>>, ManagedService, PartitionAwareService

public class InternalPartitionServiceImpl
extends Object
implements InternalPartitionService, ManagedService, EventPublishingService<PartitionEvent,PartitionEventListener<PartitionEvent>>, PartitionAwareService

The InternalPartitionService implementation.

Field Summary

Fields inherited from interface com.hazelcast.partition.InternalPartitionService

DEFAULT_REPLICA_SYNC_DELAY, MIGRATION_EVENT_TOPIC, PARTITION_LOST_EVENT_TOPIC, REPLICA_SYNC_RETRY_DELAY, SERVICE_NAME

Constructor Summary

Constructors

Constructor and Description
InternalPartitionServiceImpl(Node node)

Method Summary

Methods

Modifier and Type	Method and Description
String	addMigrationListener(MigrationListener listener)
String	addPartitionLostListener(PartitionLostListener listener)
void	clearPartitionReplicaVersions(int partitionId)
void	dispatchEvent(PartitionEvent partitionEvent, PartitionEventListener partitionEventListener)
void	firstArrangement()
Collection<MigrationInfo>	getActiveMigrations()
int	getMaxBackupCount()
MemberImpl	getMember(Address address)
int	getMemberGroupsSize()
List<Integer>	getMemberPartitions(Address target)
Map<Address,List<Integer>>	getMemberPartitionsMap() Gets member partition IDs.
InternalPartitionServiceState	getMemberState()
long	getMigrationQueueSize()
Node	getNode()
List<ReplicaSyncInfo>	getOngoingReplicaSyncRequests()
com.hazelcast.partition.impl.InternalPartitionImpl	getPartition(int partitionId) Returns the InternalPartition for a given partitionId.
com.hazelcast.partition.impl.InternalPartitionImpl	getPartition(int partitionId, boolean triggerOwnerAssignment) Returns the InternalPartition for a given partitionId.
int	getPartitionCount() Returns the number of partitions.
int	getPartitionId(Data key) Returns the partition id for a Data key.
int	getPartitionId(Object key) Returns the partition id for a given object.
long	getPartitionMigrationTimeout()
Address	getPartitionOwner(int partitionId) Gets the owner of the partition if it's set.
Address	getPartitionOwnerOrWait(int partition) Gets the owner of the partition.
long[]	getPartitionReplicaVersions(int partitionId)
InternalPartition[]	getPartitions()
PartitionServiceProxy	getPartitionServiceProxy()
int	getPartitionStateVersion()
List<ScheduledEntry<Integer,ReplicaSyncInfo>>	getScheduledReplicaSyncRequests()
boolean	hasOnGoingMigration() Checks if there currently are any migrations.
boolean	hasOnGoingMigrationLocal()
long[]	incrementPartitionReplicaVersions(int partitionId, int backupCount)
void	init(NodeEngine nodeEngine, Properties properties) Initializes this ManagedService
boolean	isMemberStateSafe() Query and return if this member in a safe state or not.
boolean	isMigrationActive()
boolean	isPartitionOwner(int partitionId) Check if this node is the owner of a partition
void	memberAdded(MemberImpl member)
void	memberRemoved(MemberImpl member)
void	onPartitionLost(InternalPartitionLostEvent event) Invoked when a partition lost is detected
void	pauseMigration()
boolean	prepareToSafeShutdown(long timeout, TimeUnit unit)
boolean	removeMigrationListener(String registrationId)
boolean	removePartitionLostListener(String registrationId)
void	reset() reset this ManagedService back to initial state.
void	resumeMigration()
void	setPartitionReplicaVersions(int partitionId, long[] versions, int replicaOffset)
void	shutdown(boolean terminate) Shuts down this ManagedService.
String	toString()
void	updatePartitionReplicaVersions(int partitionId, long[] versions, int replicaIndex)

Methods inherited from class java.lang.Object

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

Constructor Detail

InternalPartitionServiceImpl

public InternalPartitionServiceImpl(Node node)

Method Detail

init

public void init(NodeEngine nodeEngine,
        Properties properties)

Description copied from interface: ManagedService

Initializes this ManagedService

Specified by:

init in interface ManagedService

Parameters:

nodeEngine - the NodeEngine that this ManagedService belongs to.

properties - the Properties. Can be used to pass settings to the service.

getPartitionOwner

public Address getPartitionOwner(int partitionId)

Description copied from interface: InternalPartitionService

Gets the owner of the partition if it's set. Otherwise it will trigger partition assignment.

Specified by:

getPartitionOwner in interface InternalPartitionService

Parameters:

partitionId - the partitionId

Returns:

owner of partition or null if it's not set yet.

getPartitionOwnerOrWait

public Address getPartitionOwnerOrWait(int partition)

Description copied from interface: InternalPartitionService

Gets the owner of the partition. If none is set, it will wait till the owner is set.

Specified by:

getPartitionOwnerOrWait in interface InternalPartitionService

Parameters:

partition - the partitionId

Returns:

owner of partition

firstArrangement

public void firstArrangement()

Specified by:

firstArrangement in interface InternalPartitionService

getMemberGroupsSize

public int getMemberGroupsSize()

Specified by:

getMemberGroupsSize in interface InternalPartitionService

getMaxBackupCount

public int getMaxBackupCount()

Specified by:

getMaxBackupCount in interface InternalPartitionService

memberAdded

public void memberAdded(MemberImpl member)

Specified by:

memberAdded in interface InternalPartitionService

memberRemoved

public void memberRemoved(MemberImpl member)

Specified by:

memberRemoved in interface InternalPartitionService

getActiveMigrations

public Collection<MigrationInfo> getActiveMigrations()

Specified by:

getActiveMigrations in interface InternalPartitionService

getPartitions

public InternalPartition[] getPartitions()

Specified by:

getPartitions in interface InternalPartitionService

getMember

public MemberImpl getMember(Address address)

Specified by:

getMember in interface InternalPartitionService

getPartition

public com.hazelcast.partition.impl.InternalPartitionImpl getPartition(int partitionId)

Description copied from interface: InternalPartitionService

Returns the InternalPartition for a given partitionId. If owner of the partition is not set yet, it will trigger partition assignment.

The InternalPartition for a given partitionId wil never change; so it can be cached safely.

Specified by:

getPartition in interface InternalPartitionService

Parameters:

partitionId - the partitionId

Returns:

the InternalPartition.

getPartition

public com.hazelcast.partition.impl.InternalPartitionImpl getPartition(int partitionId,
                                                              boolean triggerOwnerAssignment)

Description copied from interface: InternalPartitionService

Returns the InternalPartition for a given partitionId. If owner of the partition is not set yet and triggerOwnerAssignment is true, it will trigger partition assignment.

The InternalPartition for a given partitionId wil never change; so it can be cached safely.

Specified by:

getPartition in interface InternalPartitionService

Parameters:

partitionId - the partitionId

triggerOwnerAssignment - flag to trigger partition assignment

Returns:

the InternalPartition.

prepareToSafeShutdown

public boolean prepareToSafeShutdown(long timeout,
                            TimeUnit unit)

Specified by:

prepareToSafeShutdown in interface InternalPartitionService

isMemberStateSafe

public boolean isMemberStateSafe()

Description copied from interface: InternalPartitionService

Query and return if this member in a safe state or not. This method just checks for a safe state, it doesn't force this member to be in a safe state.

Specified by:

isMemberStateSafe in interface InternalPartitionService

Returns:

true if this member in a safe state, otherwise false

getMemberState

public InternalPartitionServiceState getMemberState()

hasOnGoingMigration

public boolean hasOnGoingMigration()

Description copied from interface: InternalPartitionService

Checks if there currently are any migrations.

Specified by:

hasOnGoingMigration in interface InternalPartitionService

Returns:

true if there are migrations, false otherwise.

hasOnGoingMigrationLocal

public boolean hasOnGoingMigrationLocal()

Specified by:

hasOnGoingMigrationLocal in interface InternalPartitionService

getPartitionId

public final int getPartitionId(Data key)

Description copied from interface: InternalPartitionService

Returns the partition id for a Data key.

Specified by:

getPartitionId in interface InternalPartitionService

Parameters:

key - the Data key.

Returns:

the partition id.

getPartitionId

public final int getPartitionId(Object key)

Description copied from interface: InternalPartitionService

Returns the partition id for a given object.

Specified by:

getPartitionId in interface InternalPartitionService

Parameters:

key - the object key.

Returns:

the partition id.

getPartitionCount

public final int getPartitionCount()

Description copied from interface: InternalPartitionService

Returns the number of partitions.

Specified by:

getPartitionCount in interface InternalPartitionService

Returns:

the number of partitions.

getPartitionMigrationTimeout

public long getPartitionMigrationTimeout()

incrementPartitionReplicaVersions

public long[] incrementPartitionReplicaVersions(int partitionId,
                                       int backupCount)

Specified by:

incrementPartitionReplicaVersions in interface InternalPartitionService

updatePartitionReplicaVersions

public void updatePartitionReplicaVersions(int partitionId,
                                  long[] versions,
                                  int replicaIndex)

Specified by:

updatePartitionReplicaVersions in interface InternalPartitionService

getPartitionReplicaVersions

public long[] getPartitionReplicaVersions(int partitionId)

Specified by:

getPartitionReplicaVersions in interface InternalPartitionService

setPartitionReplicaVersions

public void setPartitionReplicaVersions(int partitionId,
                               long[] versions,
                               int replicaOffset)

Specified by:

setPartitionReplicaVersions in interface InternalPartitionService

clearPartitionReplicaVersions

public void clearPartitionReplicaVersions(int partitionId)

Specified by:

clearPartitionReplicaVersions in interface InternalPartitionService

getMemberPartitionsMap

public Map<Address,List<Integer>> getMemberPartitionsMap()

Description copied from interface: InternalPartitionService

Gets member partition IDs. Blocks until partitions are assigned.

Specified by:

getMemberPartitionsMap in interface InternalPartitionService

Returns:

map of member address to partition Ids

getMemberPartitions

public List<Integer> getMemberPartitions(Address target)

Specified by:

getMemberPartitions in interface InternalPartitionService

reset

public void reset()

Description copied from interface: ManagedService

reset this ManagedService back to initial state. todo: what is the purpose of reset

Specified by:

reset in interface ManagedService

pauseMigration

public void pauseMigration()

Specified by:

pauseMigration in interface InternalPartitionService

resumeMigration

public void resumeMigration()

Specified by:

resumeMigration in interface InternalPartitionService

isMigrationActive

public boolean isMigrationActive()

shutdown

public void shutdown(boolean terminate)

Description copied from interface: ManagedService

Shuts down this ManagedService. todo: what is the purpose of the terminate variable.

Specified by:

shutdown in interface ManagedService

Parameters:

terminate - true to shut down the ManagedService

getMigrationQueueSize

public long getMigrationQueueSize()

Specified by:

getMigrationQueueSize in interface InternalPartitionService

getPartitionServiceProxy

public PartitionServiceProxy getPartitionServiceProxy()

Specified by:

getPartitionServiceProxy in interface InternalPartitionService

addMigrationListener

public String addMigrationListener(MigrationListener listener)

Specified by:

addMigrationListener in interface InternalPartitionService

removeMigrationListener

public boolean removeMigrationListener(String registrationId)

Specified by:

removeMigrationListener in interface InternalPartitionService

addPartitionLostListener

public String addPartitionLostListener(PartitionLostListener listener)

Specified by:

addPartitionLostListener in interface InternalPartitionService

removePartitionLostListener

public boolean removePartitionLostListener(String registrationId)

Specified by:

removePartitionLostListener in interface InternalPartitionService

dispatchEvent

public void dispatchEvent(PartitionEvent partitionEvent,
                 PartitionEventListener partitionEventListener)

Specified by:

dispatchEvent in interface EventPublishingService<PartitionEvent,PartitionEventListener<PartitionEvent>>

toString

public String toString()

Overrides:

toString in class Object

getNode

public Node getNode()

isPartitionOwner

public boolean isPartitionOwner(int partitionId)

Description copied from interface: InternalPartitionService

Check if this node is the owner of a partition

Specified by:

isPartitionOwner in interface InternalPartitionService

Returns:

true if it owns the partition. false if it doesn't or partition hasn't been assigned yet.

getPartitionStateVersion

public int getPartitionStateVersion()

Specified by:

getPartitionStateVersion in interface InternalPartitionService

onPartitionLost

public void onPartitionLost(InternalPartitionLostEvent event)

Description copied from interface: PartitionAwareService

Invoked when a partition lost is detected

Specified by:

onPartitionLost in interface PartitionAwareService

Parameters:

event - The event object that contains the partition id and the number of replicas that is lost

getOngoingReplicaSyncRequests

public List<ReplicaSyncInfo> getOngoingReplicaSyncRequests()

Returns:

copy of ongoing replica-sync operations

getScheduledReplicaSyncRequests

public List<ScheduledEntry<Integer,ReplicaSyncInfo>> getScheduledReplicaSyncRequests()

Returns:

copy of scheduled replica-sync requests