org.infinispan.interceptors.locking
Class PessimisticLockingInterceptor

java.lang.Object
  org.infinispan.commands.AbstractVisitor
      org.infinispan.interceptors.base.CommandInterceptor
          org.infinispan.interceptors.locking.AbstractLockingInterceptor
              org.infinispan.interceptors.locking.AbstractTxLockingInterceptor
                  org.infinispan.interceptors.locking.PessimisticLockingInterceptor

All Implemented Interfaces:

Visitor

public class PessimisticLockingInterceptor
extends AbstractTxLockingInterceptor

Locking interceptor to be used by pessimistic caches. Design note: when a lock "k" needs to be acquired (e.g. cache.put("k", "v")), if the lock owner is the local node, no remote call is performed to migrate locking logic to the other (numOwners - 1) lock owners. This is a good optimisation for in-vm transactions: if the local node crashes before prepare then the replicated lock information would be useless as the tx is rolled back. OTOH for remote hotrod/transactions this additional RPC makes sense because there's no such thing as transaction originator node, so this might become a configuration option when HotRod tx are in place. Implementation note: current implementation acquires locks remotely first and then locally. This is required by the deadlock detection logic, but might not be optimal: acquiring locks locally first might help to fail fast the in the case of keys being locked.

Since:

5.1

Author:

Mircea Markus

Field Summary

Fields inherited from class org.infinispan.interceptors.locking.AbstractTxLockingInterceptor

rpcManager, txTable

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

configuration

Constructor Summary

PessimisticLockingInterceptor()

Method Summary

protected Log	getLog()
void	init(CommandsFactory factory)
protected void	lockAndRegisterBackupLock(TxInvocationContext ctx, Object key, boolean isLockOwner)
Object	visitApplyDeltaCommand(InvocationContext ctx, ApplyDeltaCommand command)
Object	visitClearCommand(InvocationContext ctx, ClearCommand command)
Object	visitGetKeyValueCommand(InvocationContext ctx, GetKeyValueCommand 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)

Methods inherited from class org.infinispan.interceptors.locking.AbstractTxLockingInterceptor

abortIfRemoteTransactionInvalid, invokeNextAndCommitIf1Pc, lockAndRegisterBackupLock, lockKeyAndCheckOwnership, setDependencies, visitCommitCommand, visitEvictCommand, visitRollbackCommand

Methods inherited from class org.infinispan.interceptors.locking.AbstractLockingInterceptor

cleanLocksAndRethrow, lockKey, setDependencies, visitInvalidateCommand, visitInvalidateL1Command

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

getNext, handleDefault, hasNext, invokeNextInterceptor, setNext

Methods inherited from class org.infinispan.commands.AbstractVisitor

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

Methods inherited from class java.lang.Object

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

Constructor Detail

PessimisticLockingInterceptor

public PessimisticLockingInterceptor()

Method Detail

getLog

protected Log getLog()

Overrides:

getLog in class CommandInterceptor

init

public void init(CommandsFactory factory)

visitGetKeyValueCommand

public final Object visitGetKeyValueCommand(InvocationContext ctx,
                                            GetKeyValueCommand command)
                                     throws Throwable

Specified by:

visitGetKeyValueCommand in interface Visitor

Overrides:

visitGetKeyValueCommand in class AbstractTxLockingInterceptor

Throws:

Throwable

visitPrepareCommand

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

Specified by:

visitPrepareCommand in interface Visitor

Overrides:

visitPrepareCommand 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

visitRemoveCommand

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

Specified by:

visitRemoveCommand in interface Visitor

Overrides:

visitRemoveCommand 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

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

visitLockControlCommand

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

Specified by:

visitLockControlCommand in interface Visitor

Overrides:

visitLockControlCommand in class AbstractVisitor

Throws:

Throwable

lockAndRegisterBackupLock

protected final void lockAndRegisterBackupLock(TxInvocationContext ctx,
                                               Object key,
                                               boolean isLockOwner)
                                        throws InterruptedException

Throws:

InterruptedException