Package org.infinispan.interceptors.locking

Class PessimisticLockingInterceptor

java.lang.Object

org.infinispan.interceptors.BaseAsyncInterceptor

org.infinispan.interceptors.DDAsyncInterceptor

org.infinispan.interceptors.locking.AbstractLockingInterceptor

org.infinispan.interceptors.locking.AbstractTxLockingInterceptor

org.infinispan.interceptors.locking.PessimisticLockingInterceptor

All Implemented Interfaces:

Visitor, AsyncInterceptor

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.

Author:

Mircea Markus

Field Summary

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

cdl, invalidationMode, lockManager

Fields inherited from class org.infinispan.interceptors.BaseAsyncInterceptor

cacheConfiguration

Constructor Summary

Constructors

Constructor	Description
PessimisticLockingInterceptor()

Method Summary

Modifier and Type	Method	Description
protected Log	getLog()
protected Object	handleReadManyCommand(InvocationContext ctx, FlagAffectedCommand command, Collection<?> keys)
protected <K> Object	handleWriteManyCommand(InvocationContext ctx, WriteCommand command, Collection<K> keys, boolean forwarded)
protected final Object	visitDataReadCommand(InvocationContext ctx, DataCommand command)
protected Object	visitDataWriteCommand(InvocationContext ctx, DataWriteCommand command)
Object	visitLockControlCommand(TxInvocationContext ctx, LockControlCommand command)
Object	visitPrepareCommand(TxInvocationContext ctx, PrepareCommand command)

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

visitCommitCommand, visitRollbackCommand

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

getLockTimeoutMillis, lockAndRecord, start, visitClearCommand, visitComputeCommand, visitComputeIfAbsentCommand, visitGetAllCommand, visitGetCacheEntryCommand, visitGetKeyValueCommand, visitInvalidateCommand, visitInvalidateL1Command, visitIracPutKeyValueCommand, visitPutKeyValueCommand, visitPutMapCommand, visitReadOnlyKeyCommand, visitReadOnlyManyCommand, visitReadWriteKeyCommand, visitReadWriteKeyValueCommand, visitReadWriteManyCommand, visitReadWriteManyEntriesCommand, visitRemoveCommand, visitRemoveExpiredCommand, visitReplaceCommand, visitWriteOnlyKeyCommand, visitWriteOnlyKeyValueCommand, visitWriteOnlyManyCommand, visitWriteOnlyManyEntriesCommand

Methods inherited from class org.infinispan.interceptors.DDAsyncInterceptor

handleDefault, visitCommand, visitEntrySetCommand, visitEvictCommand, visitKeySetCommand, visitSizeCommand, visitTouchCommand, visitUnknownCommand

Methods inherited from class org.infinispan.interceptors.BaseAsyncInterceptor

asyncInvokeNext, asyncInvokeNext, asyncInvokeNext, asyncValue, delayedNull, delayedValue, delayedValue, invokeNext, invokeNextAndExceptionally, invokeNextAndFinally, invokeNextAndHandle, invokeNextThenAccept, invokeNextThenApply, isSuccessfullyDone, makeStage, setNextInterceptor, valueOrException

Methods inherited from class java.lang.Object

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

Constructor Details

PessimisticLockingInterceptor

public PessimisticLockingInterceptor()

Method Details

getLog

protected Log getLog()

Specified by:

getLog in class AbstractLockingInterceptor

visitDataReadCommand

protected final Object visitDataReadCommand(InvocationContext ctx,
 DataCommand command)
                                     throws Throwable

Specified by:

visitDataReadCommand in class AbstractLockingInterceptor

Throws:

Throwable

handleReadManyCommand

protected Object handleReadManyCommand(InvocationContext ctx,
 FlagAffectedCommand command,
 Collection<?> keys)

Overrides:

handleReadManyCommand in class AbstractTxLockingInterceptor

visitPrepareCommand

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

Specified by:

visitPrepareCommand in interface Visitor

Overrides:

visitPrepareCommand in class DDAsyncInterceptor

Throws:

Throwable

handleWriteManyCommand

protected <K> Object handleWriteManyCommand(InvocationContext ctx,
 WriteCommand command,
 Collection<K> keys,
 boolean forwarded)

Specified by:

handleWriteManyCommand in class AbstractLockingInterceptor

visitDataWriteCommand

protected Object visitDataWriteCommand(InvocationContext ctx,
 DataWriteCommand command)
                                throws Throwable

Specified by:

visitDataWriteCommand in class AbstractLockingInterceptor

Throws:

Throwable

visitLockControlCommand

public Object visitLockControlCommand(TxInvocationContext ctx,
 LockControlCommand command)

Specified by:

visitLockControlCommand in interface Visitor

Overrides:

visitLockControlCommand in class DDAsyncInterceptor