Package org.infinispan.commands.triangle

Class BackupWriteCommand

java.lang.Object

org.infinispan.commands.remote.BaseRpcCommand

org.infinispan.commands.triangle.BackupWriteCommand

All Implemented Interfaces:

CacheRpcCommand, ReplicableCommand

Direct Known Subclasses:

BackupNoopCommand, MultiEntriesFunctionalBackupWriteCommand, MultiKeyFunctionalBackupWriteCommand, PutMapBackupWriteCommand, SingleKeyBackupWriteCommand, SingleKeyFunctionalBackupWriteCommand

public abstract class BackupWriteCommand
extends BaseRpcCommand

A write operation sent from the primary owner to the backup owners.

This is a base command with the CommandInvocationId, topology and flags.

Since the primary → backup operations are ordered by segment, it contains the segment to be updated and its sequence number.

Since:

9.2

Author:

Pedro Ruivo

Field Summary

Fields

Modifier and Type	Field	Description
protected int	segmentId

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

cacheName, origin

Method Summary

Modifier and Type	Method	Description
boolean	canBlock()	If true, the command is processed asynchronously in a thread provided by an Infinispan thread pool.
CommandInvocationId	getCommandInvocationId()
long	getFlags()
int	getSegmentId()
long	getSequence()
int	getTopologyId()
CompletionStage<?>	invokeAsync(ComponentRegistry componentRegistry)	Invoke the command asynchronously.
boolean	isReturnValueExpected()	If true, a return value will be provided when performed remotely.
void	setSegmentId(int segmentId)
void	setSequence(long sequence)

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

getCacheName, getOrigin, setOrigin, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.infinispan.commands.ReplicableCommand

getCommandId, invoke, invokeAsync, isSuccessful, logThrowable, readFrom, writeTo

Field Detail

segmentId

protected int segmentId

Method Detail

invokeAsync

public final CompletionStage<?> invokeAsync(ComponentRegistry componentRegistry)

Description copied from interface: CacheRpcCommand

Invoke the command asynchronously.

This method replaces ReplicableCommand.invoke() for remote execution. The default implementation and ReplicableCommand.invoke() will be removed in future versions.

isReturnValueExpected

public final 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

canBlock

public final boolean canBlock()

Description copied from interface: ReplicableCommand

If true, the command is processed asynchronously in a thread provided by an Infinispan thread pool. Otherwise, the command is processed directly in the JGroups thread.

This feature allows to avoid keep a JGroups thread busy that can originate discard of messages and retransmissions. So, the commands that can block (waiting for some state, acquiring locks, etc.) should return true.

Returns:

true if the command can block/wait, false otherwise

getSequence

public final long getSequence()

setSequence

public final void setSequence(long sequence)

getCommandInvocationId

public final CommandInvocationId getCommandInvocationId()

getTopologyId

public final int getTopologyId()

getFlags

public final long getFlags()

getSegmentId

public final int getSegmentId()

setSegmentId

public final void setSegmentId(int segmentId)