package org.infinispan.interceptors.impl;
import javax.transaction.SystemException;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import org.infinispan.batch.BatchContainer;
import org.infinispan.commands.VisitableCommand;
import org.infinispan.commands.write.EvictCommand;
import org.infinispan.context.InvocationContext;
import org.infinispan.context.InvocationContextFactory;
import org.infinispan.factories.annotations.Inject;
import org.infinispan.interceptors.DDAsyncInterceptor;
import org.infinispan.util.logging.Log;
import org.infinispan.util.logging.LogFactory;
/**
* Interceptor that captures batched calls and attaches contexts.
*
* @author Manik Surtani (<a href="mailto:manik@jboss.org">manik@jboss.org</a>)
* @since 9.0
*/
public class BatchingInterceptor extends DDAsyncInterceptor {
private BatchContainer batchContainer;
private TransactionManager transactionManager;
private InvocationContextFactory invocationContextFactory;
private static final Log log = LogFactory.getLog(BatchingInterceptor.class);
@Inject
private void inject(BatchContainer batchContainer, TransactionManager transactionManager,
InvocationContextFactory invocationContextFactory) {
this.batchContainer = batchContainer;
this.transactionManager = transactionManager;
this.invocationContextFactory = invocationContextFactory;
}
@Override
public Object visitEvictCommand(InvocationContext ctx, EvictCommand command) throws Throwable {
// eviction is non-tx, so this interceptor should be no-op for EvictCommands
return invokeNext(ctx, command);
}
/**
* Simply check if there is an ongoing tx. <ul> <li>If there is one, this is a no-op and just passes the call up the
* chain.</li> <li>If there isn't one and there is a batch in progress, resume the batch's tx, pass up, and finally
* suspend the batch's tx.</li> <li>If there is no batch in progress, just pass the call up the chain.</li> </ul>
*/
@Override
public Object handleDefault(InvocationContext ctx, VisitableCommand command) throws Throwable {
if (!ctx.isOriginLocal()) {
// Nothing to do for remote calls
return invokeNext(ctx, command);
}
Transaction tx;
if (transactionManager.getTransaction() != null || (tx = batchContainer.getBatchTransaction()) == null) {
// The active transaction means we are in an auto-batch.
// No batch means a read-only auto-batch.
// Either way, we don't need to do anything
return invokeNext(ctx, command);
}
try {
transactionManager.resume(tx);
if (ctx.isInTxScope()) {
return invokeNext(ctx, command);
}
log.tracef("Called with a non-tx invocation context: %s", ctx);
InvocationContext txInvocationContext = invocationContextFactory.createInvocationContext(true, -1);
return invokeNext(txInvocationContext, command);
} finally {
suspendTransaction();
}
}
private void suspendTransaction() throws SystemException {
if (transactionManager.getTransaction() != null && batchContainer.isSuspendTxAfterInvocation())
transactionManager.suspend();
}
}