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| package org.jboss.cache.optimistic; |
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| import org.jboss.cache.CacheSPI; |
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| import org.jboss.cache.Fqn; |
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| import org.jboss.cache.NodeSPI; |
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| |
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| import javax.transaction.Transaction; |
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| import javax.transaction.TransactionManager; |
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| import java.util.LinkedList; |
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| import java.util.List; |
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| import java.util.concurrent.CountDownLatch; |
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| public class ConcurrentTransactionTest extends AbstractOptimisticTestCase |
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| { |
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| private CacheSPI cache; |
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| |
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| public ConcurrentTransactionTest(String name)
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| { |
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| super(name);
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| } |
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| |
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| protected void setUp()
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| { |
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| try
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| { |
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| cache = createCacheUnstarted();
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| cache.getConfiguration().setUseRegionBasedMarshalling(true);
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| cache.start();
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| } |
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| catch (Exception e) |
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| { |
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| e.printStackTrace();
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| } |
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| } |
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| |
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| protected void tearDown()
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| { |
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| if (cache != null)
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| { |
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| cache.stop();
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| cache = null;
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| } |
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| } |
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| public void testConcurrentTransactions() throws Exception
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| { |
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| TransactionManager tm = cache.getConfiguration().getRuntimeConfig().getTransactionManager();
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| Fqn abcd = Fqn.fromString("/a/b/c/d");
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| Fqn abce = Fqn.fromString("/a/b/c/e");
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| Fqn abcf = Fqn.fromString("/a/b/c/f");
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| Fqn abcg = Fqn.fromString("/a/b/c/g");
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| Fqn abxy = Fqn.fromString("/a/b/x/y");
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| cache.put(abcd, key, value);
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| assertEquals(value, cache.get(abcd, key));
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| tm.begin();
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| Transaction tx = tm.getTransaction();
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| cache.put(abxy, key, value);
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| tm.suspend();
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| cache.put(abcd, key, value + value);
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| cache.put(abce, key, value);
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| cache.put(abcf, key, value);
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| cache.put(abcg, key, value);
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| assertEquals(value + value, cache.get(abcd, key));
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| assertEquals(value, cache.get(abce, key));
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| assertEquals(value, cache.get(abcf, key));
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| assertEquals(value, cache.get(abcg, key));
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| tm.resume(tx);
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| tx.commit();
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| assertEquals(value, cache.get(abxy, key));
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| NodeSPI n = cache.getRoot();
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| System.out.println(n.getVersion());
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| } |
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| public void testConcurrentCreationTestWithEmptyCache() throws Exception
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| { |
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| doConcurrentCreationTest(false);
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| } |
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| public void testConcurrentCreationTestWithEmptyCacheActivated() throws Exception
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| { |
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| cache.put(Fqn.fromString("/parent"), null);
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| cache.getRegion(Fqn.fromString("/parent"), true).activate();
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| assertNotNull(cache.peek(Fqn.fromString("/parent"), false));
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| doConcurrentCreationTest(false);
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| } |
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| public void testConcurrentCreationTestWithPopulatedCache() throws Exception
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| { |
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| doConcurrentCreationTest(true);
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| } |
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| public void testConcurrentReadAndRemove() throws Exception
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| { |
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| final List exceptions = new LinkedList();
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| final CountDownLatch readerLatch = new CountDownLatch(1);
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| final CountDownLatch readerFinishedLatch = new CountDownLatch(1);
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| final Fqn fqn = Fqn.fromString("/parent/child");
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| cache.put(fqn, "k", "v");
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| class Reader extends Thread |
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| { |
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| public void run()
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| { |
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| try
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| { |
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| cache.getTransactionManager().begin();
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| cache.get(fqn, "k");
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| readerFinishedLatch.countDown();
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| readerLatch.await();
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| cache.getTransactionManager().commit();
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| } |
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| catch (Exception e) |
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| { |
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| e.printStackTrace();
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| exceptions.add(e);
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| } |
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| } |
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| } |
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| Thread reader = new Reader();
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| reader.start();
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| readerFinishedLatch.await();
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| cache.removeNode(fqn.getParent());
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| assertNull(cache.peek(fqn.getParent(), false));
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| readerLatch.countDown();
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| reader.join();
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| assertTrue("Should not have caught any exceptions!!", exceptions.isEmpty());
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| } |
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| private void doConcurrentCreationTest(boolean prepopulateParent) throws Exception
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| { |
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| if (prepopulateParent) cache.put(Fqn.fromString("/parent/dummy"), "k", "v");
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| final List exceptions = new LinkedList();
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| final CountDownLatch latch = new CountDownLatch(1);
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| class ConcurrentCreator extends Thread |
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| { |
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| private String name; |
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| public ConcurrentCreator(String name)
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| { |
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| this.name = name;
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| } |
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| public void run()
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| { |
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| try
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| { |
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| cache.getTransactionManager().begin();
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| cache.put(Fqn.fromString("/parent/child" + name), "key", "value");
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| latch.await();
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| cache.getTransactionManager().commit();
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| } |
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| catch (Exception e) |
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| { |
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| e.printStackTrace();
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| exceptions.add(e);
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| } |
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| } |
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| } |
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| Thread one = new ConcurrentCreator("one");
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| Thread two = new ConcurrentCreator("two");
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| one.start();
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| two.start();
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| latch.countDown();
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| one.join();
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| two.join();
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| assertTrue("Should not have caught any exceptions!!", exceptions.isEmpty());
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| } |
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| } |