/*
* JBoss, Home of Professional Open Source
* Copyright 2011 Red Hat Inc. and/or its affiliates and other
* contributors as indicated by the @author tags. All rights reserved.
* See the copyright.txt in the distribution for a full listing of
* individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
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*/
package org.infinispan.tx;
import org.infinispan.Cache;
import org.infinispan.config.Configuration;
import org.infinispan.manager.EmbeddedCacheManager;
import org.infinispan.test.SingleCacheManagerTest;
import org.infinispan.test.fwk.TestCacheManagerFactory;
import org.infinispan.transaction.lookup.DummyTransactionManagerLookup;
import org.infinispan.transaction.tm.DummyTransaction;
import org.infinispan.transaction.tm.DummyTransactionManager;
import org.testng.annotations.Test;
import javax.transaction.Transaction;
import javax.transaction.TransactionManager;
import java.util.concurrent.CountDownLatch;
/**
* This tests the following pattern:
* <p/>
* Thread T1 holds lock for key K. TX1 attempts to lock a key K. Waits for lock. TM times out the tx and aborts the tx
* (calls XA.end, XA.rollback). T1 releases lock. Wait a few seconds. Make sure there are no stale locks (i.e., when the
* thread for TX1 wakes up and gets the lock on K, it then releases and aborts).
*
* @author manik
*/
@Test (testName = "tx.StaleLockAfterTxAbortTest", groups = "unit")
public class StaleLockAfterTxAbortTest extends SingleCacheManagerTest {
final String k = "key";
@Override
protected EmbeddedCacheManager createCacheManager() throws Exception {
Configuration c = getDefaultStandaloneConfig(true);
c.fluent().transaction().transactionManagerLookup(new DummyTransactionManagerLookup());
return TestCacheManagerFactory.createCacheManager(c);
}
public void doTest() throws Throwable {
cache.put(k, "value"); // init value
assertNotLocked(cache, k);
// InvocationContextContainerImpl icc = (InvocationContextContainerImpl) TestingUtil.extractComponent(cache, InvocationContextContainer.class);
// InvocationContext ctx = icc.getInvocationContext();
// LockManager lockManager = TestingUtil.extractComponent(cache, LockManager.class);
// lockManager.lockAndRecord(k, ctx);
// ctx.putLookedUpEntry(k, null);
DummyTransactionManager dtm = (DummyTransactionManager) tm();
tm().begin();
cache.put(k, "some");
final DummyTransaction transaction = dtm.getTransaction();
transaction.runPrepare();
tm().suspend();
// test that the key is indeed locked.
assertLocked(cache, k);
final CountDownLatch txStartedLatch = new CountDownLatch(1);
TxThread transactionThread = new TxThread(cache, txStartedLatch);
transactionThread.start();
txStartedLatch.countDown();
Thread.sleep(500); // in case the thread needs some time to get to the locking code
// now abort the tx.
transactionThread.tm.resume(transactionThread.tx);
transactionThread.tm.rollback();
// now release the lock
tm().resume(transaction);
transaction.runRollback();
transactionThread.join();
assertNotLocked(cache, k);
}
private class TxThread extends Thread {
final Cache<Object, Object> cache;
volatile Transaction tx;
volatile Exception exception;
final TransactionManager tm;
final CountDownLatch txStartedLatch;
private TxThread(Cache<Object, Object> cache, CountDownLatch txStartedLatch) {
this.cache = cache;
this.tx = null;
this.tm = cache.getAdvancedCache().getTransactionManager();
this.txStartedLatch = txStartedLatch;
}
@Override
public void run() {
try {
// Now start a new tx.
tm.begin();
tx = tm.getTransaction();
System.out.println("Started transaction " + tx);
txStartedLatch.countDown();
cache.put(k, "v2"); // this should block.
} catch (Exception e) {
exception = e;
}
}
}
}