package org.infinispan.interceptors.locking;
import org.infinispan.InvalidCacheUsageException;
import org.infinispan.commands.read.GetKeyValueCommand;
import org.infinispan.commands.write.ClearCommand;
import org.infinispan.commands.write.PutMapCommand;
import org.infinispan.commands.write.RemoveCommand;
import org.infinispan.commands.write.ReplaceCommand;
import org.infinispan.context.InvocationContext;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Locking interceptor to be used for non-transactional caches.
*
* @author Mircea Markus
* @since 5.1
*/
public class NonTransactionalLockingInterceptor extends AbstractLockingInterceptor {
private static final Log log = LogFactory.getLog(NonTransactionalLockingInterceptor.class);
@Override
protected Log getLog() {
return log;
}
@Override
public Object visitGetKeyValueCommand(InvocationContext ctx, GetKeyValueCommand command) throws Throwable {
assertNonTransactional(ctx);
try {
return invokeNextInterceptor(ctx, command);
} finally {
lockManager.unlockAll(ctx);//possibly needed because of L1 locks being acquired
}
}
@Override
public Object visitClearCommand(InvocationContext ctx, ClearCommand command) throws Throwable {
assertNonTransactional(ctx);
boolean skipLocking = hasSkipLocking(command);
long lockTimeout = getLockAcquisitionTimeout(command, skipLocking);
for (Object key: dataContainer.keySet()) {
if (shouldLock(key, command)) {
lockKey(ctx, key, lockTimeout, skipLocking);
}
}
try {
return invokeNextInterceptor(ctx, command);
} finally {
lockManager.unlockAll(ctx);
}
}
@Override
public Object visitPutMapCommand(InvocationContext ctx, PutMapCommand command) throws Throwable {
assertNonTransactional(ctx);
try {
if (!command.isForwarded()) {
boolean skipLocking = hasSkipLocking(command);
long lockTimeout = getLockAcquisitionTimeout(command, skipLocking);
for (Object key : command.getMap().keySet()) {
if (shouldLock(key, command))
lockKey(ctx, key, lockTimeout, skipLocking);
}
}
return invokeNextInterceptor(ctx, command);
} catch (Throwable te) {
throw cleanLocksAndRethrow(ctx, te);
}
finally {
lockManager.unlockAll(ctx);
}
}
@Override
public Object visitRemoveCommand(InvocationContext ctx, RemoveCommand command) throws Throwable {
assertNonTransactional(ctx);
try {
if (!shouldLock(command.getKey(), command))
return invokeNextInterceptor(ctx, command);
lockKey(ctx, command);
return invokeNextInterceptor(ctx, command);
} catch (Throwable te) {
throw cleanLocksAndRethrow(ctx, te);
} finally {
lockManager.unlockAll(ctx);
}
}
@Override
public Object visitReplaceCommand(InvocationContext ctx, ReplaceCommand command) throws Throwable {
assertNonTransactional(ctx);
try {
if (!shouldLock(command.getKey(), command))
return invokeNextInterceptor(ctx, command);
lockKey(ctx, command);
return invokeNextInterceptor(ctx, command);
} catch (Throwable te) {
throw cleanLocksAndRethrow(ctx, te);
}
finally {
lockManager.unlockAll(ctx);
}
}
private void assertNonTransactional(InvocationContext ctx) {
//this only happens if the cache is used in a transaction's scope
if (ctx.isInTxScope()) {
throw new InvalidCacheUsageException(
"This is a non-transactional cache and cannot be accessed with a transactional InvocationContext.");
}
}
}