[jboss-cvs] JBossAS SVN: r111644 - in projects/jboss-jca/branches/Branch_1_0/adapters/src: main/java/org/jboss/jca/adapters/jdbc/util and 3 other directories.

jboss-cvs-commits at lists.jboss.org jboss-cvs-commits at lists.jboss.org
Mon Jun 20 15:03:57 EDT 2011


Author: jesper.pedersen
Date: 2011-06-20 15:03:57 -0400 (Mon, 20 Jun 2011)
New Revision: 111644

Added:
   projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/util/ReentrantLock.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/ConnectionCloseXAResource.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockConnectionHandler.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockDriver.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockTestCase.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/package.html
   projects/jboss-jca/branches/Branch_1_0/adapters/src/test/resources/deadlock-ds.xml
Modified:
   projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/BaseWrapperManagedConnection.java
   projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/WrappedConnection.java
Log:
[JBJCA-599] Deadlock in JDBC adapter

Modified: projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/BaseWrapperManagedConnection.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/BaseWrapperManagedConnection.java	2011-06-20 18:01:52 UTC (rev 111643)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/BaseWrapperManagedConnection.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -23,6 +23,7 @@
 package org.jboss.jca.adapters.jdbc;
 
 import org.jboss.jca.adapters.jdbc.spi.reauth.ReauthPlugin;
+import org.jboss.jca.adapters.jdbc.util.ReentrantLock;
 
 import java.io.PrintWriter;
 import java.sql.CallableStatement;
@@ -39,7 +40,6 @@
 import java.util.Set;
 import java.util.concurrent.TimeUnit;
 import java.util.concurrent.atomic.AtomicBoolean;
-import java.util.concurrent.locks.ReentrantLock;
 
 import javax.resource.ResourceException;
 import javax.resource.spi.ConnectionEvent;
@@ -274,6 +274,32 @@
     */
    public void cleanup() throws ResourceException
    {
+      boolean isActive = false;
+
+      if (lock.hasQueuedThreads())
+      {
+         Collection<Thread> threads = lock.getQueuedThreads();
+         for (Thread thread : threads)
+         {
+            Throwable t = new Throwable("Thread waiting for lock during cleanup");
+            t.setStackTrace(thread.getStackTrace());
+
+            mcf.log.warn(t.getMessage(), t);
+         }
+
+         isActive = true;
+      }
+
+      if (lock.isLocked())
+      {
+         Throwable t = new Throwable("Lock owned during cleanup");
+         t.setStackTrace(lock.getOwner().getStackTrace());
+
+         mcf.log.warn(t.getMessage(), t);
+
+         isActive = true;
+      }
+
       synchronized (handles)
       {
          for (Iterator<WrappedConnection> i = handles.iterator(); i.hasNext();)
@@ -302,11 +328,17 @@
             }
          }
       }
-      // I'm recreating the lock object when we return to the pool
-      // because it looks too nasty to expect the connection handle
-      // to unlock properly in certain race conditions
-      // where the dissociation of the managed connection is "random".
-      lock = new ReentrantLock(true);
+
+      if (isActive)
+      {
+         // I'm recreating the lock object when we return to the pool
+         // because it looks too nasty to expect the connection handle
+         // to unlock properly in certain race conditions
+         // where the dissociation of the managed connection is "random".
+         //lock = new ReentrantLock(true);
+
+         throw new ResourceException("Still active locks");
+      }
    }
 
    /**

Modified: projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/WrappedConnection.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/WrappedConnection.java	2011-06-20 18:01:52 UTC (rev 111643)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/WrappedConnection.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -100,9 +100,17 @@
    void setManagedConnection(final BaseWrapperManagedConnection mc)
    {
       this.mc = mc;
+      this.lockCount = 0;
 
       if (mc != null)
+      {
          trackStatements = mc.getTrackStatements();
+      }
+      else
+      {
+         // Reset lockedMC reference once the connection is returned to the pool
+         lockedMC = null;
+      }
    }
 
    /**

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/util/ReentrantLock.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/util/ReentrantLock.java	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/main/java/org/jboss/jca/adapters/jdbc/util/ReentrantLock.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,59 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2011, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file 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
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+package org.jboss.jca.adapters.jdbc.util;
+
+import java.util.Collection;
+
+/**
+ * ReentrantLock override
+ * @author <a href="mailto:jesper.pedersen at jboss.org">Jesper Pedersen</a>
+ */
+public class ReentrantLock extends java.util.concurrent.locks.ReentrantLock
+{ 
+   /** Serial version uid */
+   private static final long serialVersionUID = 1L;
+
+   /**
+    * Constructor
+    * @param fair Fair locking
+    */
+   public ReentrantLock(boolean fair)
+   {
+      super(fair);
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public Thread getOwner()
+   {
+      return super.getOwner();
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public Collection<Thread> getQueuedThreads()
+   {
+      return super.getQueuedThreads();
+   }
+}

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/ConnectionCloseXAResource.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/ConnectionCloseXAResource.java	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/ConnectionCloseXAResource.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,137 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2010, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file 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
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package org.jboss.jca.adapters.jdbc.deadlock;
+
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.transaction.xa.XAException;
+import javax.transaction.xa.XAResource;
+import javax.transaction.xa.Xid;
+
+import org.jboss.logging.Logger;
+
+/**
+ * Connection close XAResource
+ */
+class ConnectionCloseXAResource implements XAResource
+{
+   private static Logger log = Logger.getLogger(ConnectionCloseXAResource.class);
+   private Connection connection;
+   private int timeout;
+
+   /**
+    * Constructor
+    * @param connection The connection
+    */
+   public ConnectionCloseXAResource(Connection connection)
+   {
+      this.connection = connection;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public void commit(Xid xid, boolean arg1) throws XAException
+   {
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public void end(Xid xid, int arg1) throws XAException
+   {
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public void forget(Xid xid) throws XAException
+   {
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public int getTransactionTimeout() throws XAException
+   {
+      return timeout;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public boolean isSameRM(XAResource xaResource) throws XAException
+   {
+      return (xaResource == this);
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public int prepare(Xid xid) throws XAException
+   {
+      return 0;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public Xid[] recover(int flag) throws XAException
+   {
+      return null;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public void rollback(Xid xid) throws XAException
+   {
+      log.info("Closing connection through rollback");
+      try
+      {
+         connection.close();
+         log.info("Closed connection through rollback");
+      }
+      catch (SQLException se)
+      {
+         log.error("Unexpected error closing exception " + se.getMessage(), se);
+      }
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public boolean setTransactionTimeout(int timeout) throws XAException
+   {
+      this.timeout = timeout;
+      return true;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public void start(Xid xid, int flags) throws XAException
+   {
+   }
+}

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockConnectionHandler.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockConnectionHandler.java	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockConnectionHandler.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,143 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2010, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file 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
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package org.jboss.jca.adapters.jdbc.deadlock;
+
+import java.lang.reflect.InvocationHandler;
+import java.lang.reflect.Method;
+import java.sql.Connection;
+import java.sql.SQLException;
+
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.naming.NamingException;
+import javax.transaction.SystemException;
+import javax.transaction.Transaction;
+import javax.transaction.TransactionManager;
+
+import org.jboss.logging.Logger;
+
+/**
+ * Deadlock connection handler
+ */
+class DeadlockConnectionHandler implements InvocationHandler
+{
+   private static Logger log = Logger.getLogger(DeadlockConnectionHandler.class);
+   private Connection connection;
+
+   /**
+    * Constructor
+    * @param connection The connection
+    */
+   public DeadlockConnectionHandler(Connection connection)
+   {
+      this.connection = connection;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public Object invoke(Object proxy, Method method, Object[] args) throws Throwable
+   {
+      String methodName = method.getName();
+      if ("createStatement".equals(methodName))
+      {
+         log.info("Forcing deadlock");
+
+         forceDeadlock();
+
+         throw new SQLException("Deadlock should now occur");
+      }
+      else
+      {
+         return method.invoke(connection, args);
+      }
+   }
+
+   private void forceDeadlock() throws SystemException
+   {
+      final TransactionManager tm = getTransactionManager();
+      final Transaction transaction = tm.getTransaction();
+
+      Runnable rollback = new Runnable()
+      {
+         public void run()
+         {
+            log.info("Before rollback");
+            try
+            {
+               transaction.rollback();
+            }
+            catch (Throwable t)
+            {
+               log.info(t.getMessage(), t);
+            }
+            finally
+            {
+               log.info("After rollback");
+            }
+         }
+      };
+
+      Thread thread = new Thread(rollback);
+      thread.start();
+
+      try
+      {
+         Thread.sleep(5000);
+      }
+      catch (InterruptedException ie)
+      {
+         // Ignore
+      }
+   }
+
+   private TransactionManager getTransactionManager()
+   {
+      Context context = null;
+      try
+      {
+         context = new InitialContext();
+         return (TransactionManager)context.lookup("java:/TransactionManager");
+      }
+      catch (Throwable t)
+      {
+         log.error(t.getMessage(), t);
+      }
+      finally
+      {
+         if (context != null)
+         {
+            try
+            {
+               context.close();
+            }
+            catch (NamingException ne)
+            {
+               // Ignore
+            }
+         }
+      }
+
+      return null;
+   }
+}

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockDriver.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockDriver.java	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockDriver.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,121 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2010, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file 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
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package org.jboss.jca.adapters.jdbc.deadlock;
+
+import java.lang.reflect.Proxy;
+import java.sql.Connection;
+import java.sql.Driver;
+import java.sql.DriverManager;
+import java.sql.DriverPropertyInfo;
+import java.sql.SQLException;
+import java.util.Properties;
+
+/**
+ * Deadlock JDBC driver
+ */
+public class DeadlockDriver implements Driver
+{
+   private static final String PREFIX = "deadlock:";
+
+   /**
+    * {@inheritDoc}
+    */
+   public Connection connect(String url, Properties info) throws SQLException
+   {
+      if (isOurUrl(url))
+      {
+         Connection connection = DriverManager.getConnection(getUrl(url), info);
+         Connection result =
+            (Connection)Proxy.newProxyInstance(Thread.currentThread().getContextClassLoader(),
+                                               new Class[] {Connection.class},
+                                               new DeadlockConnectionHandler(connection));
+         return result;
+      }
+
+      throw new SQLException("Incorrect url: " + url);
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public boolean acceptsURL(String url) throws SQLException
+   {
+      return isOurUrl(url);
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public DriverPropertyInfo[] getPropertyInfo(String url, Properties info) throws SQLException
+   {
+      if (isOurUrl(url))
+      {
+         String driverUrl = getUrl(url);
+         Driver driver = DriverManager.getDriver(driverUrl);
+         return driver.getPropertyInfo(driverUrl, info);
+      }
+
+      throw new SQLException("Incorrect url: " + url);
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public int getMajorVersion()
+   {
+      return 1;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public int getMinorVersion()
+   {
+      return 0;
+   }
+
+   /**
+    * {@inheritDoc}
+    */
+   public boolean jdbcCompliant()
+   {
+      return true;
+   }
+
+   private boolean isOurUrl(final String url)
+   {
+      return url.startsWith(PREFIX);
+   }
+
+   private String getUrl(final String url)
+   {
+      if (isOurUrl(url))
+      {
+         return url.substring(PREFIX.length());
+      }
+      else
+      {
+         return url;
+      }
+   }
+}

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockTestCase.java
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockTestCase.java	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/DeadlockTestCase.java	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,189 @@
+/*
+ * JBoss, Home of Professional Open Source.
+ * Copyright 2011, Red Hat Middleware LLC, and individual contributors
+ * as indicated by the @author tags. See the copyright.txt file 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
+ * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
+ */
+
+package org.jboss.jca.adapters.jdbc.deadlock;
+
+import org.jboss.jca.embedded.Embedded;
+import org.jboss.jca.embedded.EmbeddedFactory;
+
+import java.net.URL;
+import java.sql.Connection;
+
+import javax.naming.Context;
+import javax.naming.InitialContext;
+import javax.sql.DataSource;
+import javax.transaction.Transaction;
+import javax.transaction.TransactionManager;
+
+import org.jboss.logging.Logger;
+
+import org.junit.AfterClass;
+import org.junit.BeforeClass;
+import org.junit.Test;
+
+/**
+ * Tests for dead locks
+ */
+public class DeadlockTestCase
+{
+   private static Logger log = Logger.getLogger(DeadlockTestCase.class);
+
+   private static Embedded embedded;
+   private static TransactionManager tm;
+
+   /**
+    * Deadlock with database enabled
+    * @exception Throwable If an error occurs
+    */
+   @Test
+   public void testDeadlockDBEnabled() throws Throwable
+   {
+      Context context = null;
+
+      URL jdbc = DeadlockTestCase.class.getClassLoader().getResource("jdbc-local.rar");
+      URL deadlock = DeadlockTestCase.class.getClassLoader().getResource("deadlock-ds.xml");
+
+      embedded.deploy(jdbc);      
+      embedded.deploy(deadlock);
+
+      tm.begin();
+      try
+      {
+         Transaction transaction = tm.getTransaction();
+            
+         context = new InitialContext();
+         
+         DataSource ds = (DataSource)context.lookup("java:/DeadlockDS");
+         Connection connection = ds.getConnection();
+
+         transaction.enlistResource(new ConnectionCloseXAResource(connection));
+            
+         // Now trigger everything.
+         connection.createStatement();
+      }
+      catch (Throwable t)
+      {
+         log.info("Throwable during testDeadlockDBEnabled: " + t.getMessage(), t);
+      }
+      finally
+      {
+         log.info("Rolling back in testDeadlockDBEnabled");
+         try
+         {
+            tm.rollback();
+         }
+         finally
+         {
+            log.info("Completed rollback in testDeadlockDBEnabled");
+         }
+
+         embedded.undeploy(deadlock);
+         embedded.undeploy(jdbc);
+      }
+   }
+
+   /**
+    * Deadlock with database disabled
+    * @exception Throwable If an error occurs
+    */
+   @Test
+   public void testDeadlockDBDisabled() throws Throwable
+   {
+      Context context = null;
+
+      URL jdbc = DeadlockTestCase.class.getClassLoader().getResource("jdbc-local.rar");
+      URL deadlock = DeadlockTestCase.class.getClassLoader().getResource("deadlock-ds.xml");
+
+      embedded.deploy(jdbc);      
+      embedded.deploy(deadlock);
+
+      tm.begin();
+      try
+      {
+         Transaction transaction = tm.getTransaction();
+            
+         context = new InitialContext();
+         
+         DataSource ds = (DataSource)context.lookup("java:/DeadlockDS");
+         Connection connection = ds.getConnection();
+
+         transaction.enlistResource(new ConnectionCloseXAResource(connection));
+            
+         embedded.undeploy(deadlock);
+
+         // Now trigger everything.
+         connection.createStatement();
+      }
+      catch (Throwable t)
+      {
+         log.info("Throwable during testDeadlockDBDisabled: " + t.getMessage(), t);
+      }
+      finally
+      {
+         log.info("Rolling back in testDeadlockDBDisabled");
+         try
+         {
+            tm.rollback();
+         }
+         finally
+         {
+            log.info("Completed rollback in testDeadlockDBDisabled");
+         }
+
+         embedded.undeploy(jdbc);
+      }
+   }
+
+   /**
+    * Lifecycle start, before the suite is executed
+    * @throws Throwable throwable exception
+    */
+   @BeforeClass
+   public static void before() throws Throwable
+   {
+      // Create and set an embedded JCA instance
+      embedded = EmbeddedFactory.create();
+
+      // Startup
+      embedded.startup();
+
+      // Transaction Manager
+      tm = embedded.lookup("RealTransactionManager", TransactionManager.class);
+   }
+
+   /**
+    * Lifecycle stop, after the suite is executed
+    * @throws Throwable throwable exception
+    */
+   @AfterClass
+   public static void after() throws Throwable
+   {
+      // Reset TM reference
+      tm = null;
+
+      // Shutdown embedded
+      embedded.shutdown();
+
+      // Set embedded to null
+      embedded = null;
+   }
+}

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/package.html
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/package.html	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/java/org/jboss/jca/adapters/jdbc/deadlock/package.html	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,3 @@
+<body>
+This package contains test cases for detecting dead lock issues in the JDBC resource adapter.
+</body>

Added: projects/jboss-jca/branches/Branch_1_0/adapters/src/test/resources/deadlock-ds.xml
===================================================================
--- projects/jboss-jca/branches/Branch_1_0/adapters/src/test/resources/deadlock-ds.xml	                        (rev 0)
+++ projects/jboss-jca/branches/Branch_1_0/adapters/src/test/resources/deadlock-ds.xml	2011-06-20 19:03:57 UTC (rev 111644)
@@ -0,0 +1,15 @@
+<?xml version="1.0" encoding="UTF-8"?>
+
+<datasources xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+             xsi:noNamespaceSchemaLocation="http://www.jboss.org/jee/schema/ironjacamar/datasources_1_0.xsd">
+
+  <datasource jndi-name="java:/DeadlockDS" pool-name="DeadlockDS">
+    <connection-url>deadlock:jdbc:h2:mem:test;DB_CLOSE_DELAY=-1</connection-url>
+    <driver-class>org.jboss.jca.adapters.jdbc.deadlock.DeadlockDriver</driver-class>
+    <security>
+      <user-name>sa</user-name>
+      <password>sa</password>
+    </security>
+  </datasource>
+
+</datasources>



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