org.infinispan.commands.control
Class StateTransferControlCommand

java.lang.Object
  org.infinispan.commands.remote.BaseRpcCommand
      org.infinispan.commands.control.StateTransferControlCommand

All Implemented Interfaces:

CacheRpcCommand, ReplicableCommand

public class StateTransferControlCommand
extends BaseRpcCommand

A control command to coordinate state transfer that may occur when nodes join or leave a cluster. It is used both in replicated mode and in distributed mode.

Since:

4.0

Author:

Manik Surtani, Vladimir Blagojevic, Dan Berindei , Mircea Markus

Nested Class Summary

static class

StateTransferControlCommand.Type

Field Summary

static int

COMMAND_ID

Fields inherited from class org.infinispan.commands.remote.BaseRpcCommand

cacheName

Constructor Summary

StateTransferControlCommand()

StateTransferControlCommand(String cacheName)

StateTransferControlCommand(String cacheName, StateTransferControlCommand.Type type, Address sender, int viewId)

StateTransferControlCommand(String cacheName, StateTransferControlCommand.Type type, Address sender, int viewId, Collection<InternalCacheEntry> state, Collection<LockInfo> lockInfo)

Method Summary

byte	getCommandId() Used by marshallers to convert this command into an id for streaming.
Object[]	getParameters() Used by marshallers to stream this command across a network
StateTransferControlCommand.Type	getType()
void	init(StateTransferManager stateTransferManager, Configuration configuration, DataContainer dataContainer, CommandsFactory commandsFactory)
boolean	isReturnValueExpected() If true, a return value will be provided when performed remotely.
Object	perform(InvocationContext ctx) Performs the primary function of the command.
void	setParameters(int commandId, Object[] parameters) Used by the CommandsFactory to create a command from raw data read off a stream.
String	toString()

Methods inherited from class org.infinispan.commands.remote.BaseRpcCommand

getCacheName, getOrigin, setOrigin

Methods inherited from class java.lang.Object

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

Field Detail

COMMAND_ID

public static final int COMMAND_ID

See Also:

Constant Field Values

Constructor Detail

StateTransferControlCommand

public StateTransferControlCommand()

StateTransferControlCommand

public StateTransferControlCommand(String cacheName)

StateTransferControlCommand

public StateTransferControlCommand(String cacheName,
                                   StateTransferControlCommand.Type type,
                                   Address sender,
                                   int viewId,
                                   Collection<InternalCacheEntry> state,
                                   Collection<LockInfo> lockInfo)

StateTransferControlCommand

public StateTransferControlCommand(String cacheName,
                                   StateTransferControlCommand.Type type,
                                   Address sender,
                                   int viewId)

Method Detail

init

public void init(StateTransferManager stateTransferManager,
                 Configuration configuration,
                 DataContainer dataContainer,
                 CommandsFactory commandsFactory)

perform

public Object perform(InvocationContext ctx)
               throws Throwable

Description copied from interface: ReplicableCommand

Performs the primary function of the command. Please see specific implementation classes for details on what is performed as well as return types. Important: this method will be invoked at the end of interceptors chain. It should never be called directly from a custom interceptor.

Parameters:

ctx - invocation context

Returns:

arbitrary return value generated by performing this command

Throws:

Throwable - in the event of problems.

getType

public StateTransferControlCommand.Type getType()

getCommandId

public byte getCommandId()

Description copied from interface: ReplicableCommand

Used by marshallers to convert this command into an id for streaming.

Returns:

the method id of this command. This is compatible with pre-2.2.0 MethodCall ids.

getParameters

public Object[] getParameters()

Description copied from interface: ReplicableCommand

Used by marshallers to stream this command across a network

Returns:

an object array of arguments, compatible with pre-2.2.0 MethodCall args.

setParameters

public void setParameters(int commandId,
                          Object[] parameters)

Description copied from interface: ReplicableCommand

Used by the CommandsFactory to create a command from raw data read off a stream.

Parameters:

commandId - command id to set. This is usually unused but *could* be used in the event of a command having multiple IDs, such as PutKeyValueCommand.

parameters - object array of args

toString

public String toString()

Overrides:

toString in class BaseRpcCommand

isReturnValueExpected

public boolean isReturnValueExpected()

Description copied from interface: ReplicableCommand

If true, a return value will be provided when performed remotely. Otherwise, a remote ResponseGenerator may choose to simply return null to save on marshalling costs.

Returns:

true or false