org.infinispan.statetransfer

Class StateTransferInterceptor

java.lang.Object

org.infinispan.commands.AbstractVisitor

org.infinispan.interceptors.base.CommandInterceptor

org.infinispan.statetransfer.StateTransferInterceptor

All Implemented Interfaces:

Visitor

public class StateTransferInterceptor
extends CommandInterceptor

This interceptor has two tasks:

1. If the command's topology id is higher than the current topology id, wait for the node to receive transaction data for the new topology id.
2. If the topology id changed during a command's execution, forward the command to the new owners.

Note that we don't keep track of old cache topologies (yet), so we actually forward the command to all the owners -- not just the ones added in the new topology. Transactional commands are idempotent, so this is fine. In non-transactional mode, the semantic of these tasks changes:

1. We don't have transaction data, so the interceptor only waits for the new topology to be installed.
2. Instead of forwarding commands from any owner, we retry the command on the originator.

Since:

5.2

Author:

anistor@redhat.com

Field Summary

Fields inherited from class org.infinispan.interceptors.base.CommandInterceptor

cacheConfiguration

Constructor Summary

Constructors

Constructor and Description
StateTransferInterceptor()

Method Summary

Modifier and Type	Method and Description
protected Log	getLog()
protected Object	handleDefault(InvocationContext ctx, VisitableCommand command) The default behaviour of the visitXXX methods, which is to ignore the call and pass the call up to the next interceptor in the chain.
void	init(StateTransferLock stateTransferLock, Configuration configuration, CommandsFactory commandFactory, StateTransferManager stateTransferManager)
Object	visitApplyDeltaCommand(InvocationContext ctx, ApplyDeltaCommand command)
Object	visitClearCommand(InvocationContext ctx, ClearCommand command)
Object	visitCommitCommand(TxInvocationContext ctx, CommitCommand command)
Object	visitEvictCommand(InvocationContext ctx, EvictCommand command)
Object	visitInvalidateCommand(InvocationContext ctx, InvalidateCommand command)
Object	visitInvalidateL1Command(InvocationContext ctx, InvalidateL1Command command)
Object	visitLockControlCommand(TxInvocationContext ctx, LockControlCommand command)
Object	visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)
Object	visitPutKeyValueCommand(InvocationContext ctx, PutKeyValueCommand command)
Object	visitPutMapCommand(InvocationContext ctx, PutMapCommand command)
Object	visitRemoveCommand(InvocationContext ctx, RemoveCommand command)
Object	visitReplaceCommand(InvocationContext ctx, ReplaceCommand command)
Object	visitRollbackCommand(TxInvocationContext ctx, RollbackCommand command)

Methods inherited from class org.infinispan.interceptors.base.CommandInterceptor

getLockAcquisitionTimeout, getNext, hasNext, hasSkipLocking, injectConfiguration, invokeNextInterceptor, setNext

Methods inherited from class org.infinispan.commands.AbstractVisitor

visitCollection, visitDistributedExecuteCommand, visitEntrySetCommand, visitGetKeyValueCommand, visitKeySetCommand, visitSizeCommand, visitUnknownCommand, visitValuesCommand

Methods inherited from class java.lang.Object

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

Constructor Detail

StateTransferInterceptor

public StateTransferInterceptor()

Method Detail

getLog

protected Log getLog()

Overrides:

getLog in class CommandInterceptor

init

public void init(StateTransferLock stateTransferLock,
                 Configuration configuration,
                 CommandsFactory commandFactory,
                 StateTransferManager stateTransferManager)

visitPrepareCommand

public Object visitPrepareCommand(TxInvocationContext ctx,
                                  PrepareCommand command)
                           throws Throwable

Specified by:

visitPrepareCommand in interface Visitor

Overrides:

visitPrepareCommand in class AbstractVisitor

Throws:

Throwable

visitCommitCommand

public Object visitCommitCommand(TxInvocationContext ctx,
                                 CommitCommand command)
                          throws Throwable

Specified by:

visitCommitCommand in interface Visitor

Overrides:

visitCommitCommand in class AbstractVisitor

Throws:

Throwable

visitRollbackCommand

public Object visitRollbackCommand(TxInvocationContext ctx,
                                   RollbackCommand command)
                            throws Throwable

Specified by:

visitRollbackCommand in interface Visitor

Overrides:

visitRollbackCommand in class AbstractVisitor

Throws:

Throwable

visitLockControlCommand

public Object visitLockControlCommand(TxInvocationContext ctx,
                                      LockControlCommand command)
                               throws Throwable

Specified by:

visitLockControlCommand in interface Visitor

Overrides:

visitLockControlCommand in class AbstractVisitor

Throws:

Throwable

visitPutKeyValueCommand

public Object visitPutKeyValueCommand(InvocationContext ctx,
                                      PutKeyValueCommand command)
                               throws Throwable

Specified by:

visitPutKeyValueCommand in interface Visitor

Overrides:

visitPutKeyValueCommand in class AbstractVisitor

Throws:

Throwable

visitPutMapCommand

public Object visitPutMapCommand(InvocationContext ctx,
                                 PutMapCommand command)
                          throws Throwable

Specified by:

visitPutMapCommand in interface Visitor

Overrides:

visitPutMapCommand in class AbstractVisitor

Throws:

Throwable

visitApplyDeltaCommand

public Object visitApplyDeltaCommand(InvocationContext ctx,
                                     ApplyDeltaCommand command)
                              throws Throwable

Specified by:

visitApplyDeltaCommand in interface Visitor

Overrides:

visitApplyDeltaCommand in class AbstractVisitor

Throws:

Throwable

visitRemoveCommand

public Object visitRemoveCommand(InvocationContext ctx,
                                 RemoveCommand command)
                          throws Throwable

Specified by:

visitRemoveCommand in interface Visitor

Overrides:

visitRemoveCommand in class AbstractVisitor

Throws:

Throwable

visitReplaceCommand

public Object visitReplaceCommand(InvocationContext ctx,
                                  ReplaceCommand command)
                           throws Throwable

Specified by:

visitReplaceCommand in interface Visitor

Overrides:

visitReplaceCommand in class AbstractVisitor

Throws:

Throwable

visitClearCommand

public Object visitClearCommand(InvocationContext ctx,
                                ClearCommand command)
                         throws Throwable

Specified by:

visitClearCommand in interface Visitor

Overrides:

visitClearCommand in class AbstractVisitor

Throws:

Throwable

visitInvalidateCommand

public Object visitInvalidateCommand(InvocationContext ctx,
                                     InvalidateCommand command)
                              throws Throwable

Specified by:

visitInvalidateCommand in interface Visitor

Overrides:

visitInvalidateCommand in class AbstractVisitor

Throws:

Throwable

visitInvalidateL1Command

public Object visitInvalidateL1Command(InvocationContext ctx,
                                       InvalidateL1Command command)
                                throws Throwable

Specified by:

visitInvalidateL1Command in interface Visitor

Overrides:

visitInvalidateL1Command in class AbstractVisitor

Throws:

Throwable

visitEvictCommand

public Object visitEvictCommand(InvocationContext ctx,
                                EvictCommand command)
                         throws Throwable

Specified by:

visitEvictCommand in interface Visitor

Overrides:

visitEvictCommand in class AbstractVisitor

Throws:

Throwable

handleDefault

protected Object handleDefault(InvocationContext ctx,
                               VisitableCommand command)
                        throws Throwable

Description copied from class: CommandInterceptor

The default behaviour of the visitXXX methods, which is to ignore the call and pass the call up to the next interceptor in the chain.

Overrides:

handleDefault in class CommandInterceptor

Parameters:

ctx - invocation context

command - command to invoke

Returns:

return value

Throws:

Throwable - in the event of problems