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diff --git a/qpid/java/broker/src/test/java/org/apache/qpid/server/logging/actors/CurrentActorTest.java b/qpid/java/broker/src/test/java/org/apache/qpid/server/logging/actors/CurrentActorTest.java
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+/*
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ *
+ */
+package org.apache.qpid.server.logging.actors;
+
+import org.apache.commons.configuration.ConfigurationException;
+import org.apache.qpid.AMQException;
+import org.apache.qpid.server.AMQChannel;
+import org.apache.qpid.server.logging.NullRootMessageLogger;
+
+/**
+ * Test : CurrentActorTest
+ * Summary:
+ * Validate ThreadLocal operation.
+ *
+ * Test creates THREADS number of threads which all then execute the same test
+ * together ( as close as looping Thread.start() will allow).
+ *
+ * Test:
+ * Test sets the CurrentActor then proceeds to retrieve the value and use it.
+ *
+ * The test also validates that it is the same LogActor that this thread set.
+ *
+ * Finally the LogActor is removed and tested to make sure that it was
+ * successfully removed.
+ *
+ * By having a higher number of threads than would normally be used in the
+ * Poolling filter we aim to catch the race condition where a ThreadLocal remove
+ * is called before one or more threads call get(). This way we can ensure that
+ * the remove does not affect more than the Thread it was called in.
+ */
+public class CurrentActorTest extends BaseConnectionActorTestCase
+{
+ //Set this to be a reasonably large number
+ int THREADS = 10;
+
+ // Record any exceptions that are thrown by the threads
+ Exception[] _errors = new Exception[THREADS];
+
+ /**
+ * Test that CurrentActor behaves as LIFO queue.
+ *
+ * Test creates two Actors Connection and Channel and then sets the
+ * CurrentActor.
+ *
+ * The test validates that CurrentActor remembers the Connection actor
+ * after the Channel actor has been removed.
+ *
+ * And then finally validates that removing the Connection actor results
+ * in there being no actors set.
+ *
+ * @throws AMQException
+ * @throws org.apache.commons.configuration.ConfigurationException
+ */
+ public void testLIFO() throws AMQException, ConfigurationException
+ {
+ // This test only needs the local objects created, _session etc.
+ // So stopping the broker and making them useless will not affect the
+ // test, but the extra actors the test broker adds will so by stopping
+ // we remove the session actor and so all is good.
+ stopBroker();
+
+ AMQPConnectionActor connectionActor = new AMQPConnectionActor(getSession(),
+ new NullRootMessageLogger());
+
+ /*
+ * Push the actor on to the stack:
+ *
+ * CurrentActor -> Connection
+ * Stack -> null
+ */
+ CurrentActor.set(connectionActor);
+
+ //Use the Actor to send a simple message
+ sendTestLogMessage(CurrentActor.get());
+
+ // Verify it was the same actor as we set earlier
+ assertEquals("Retrieved actor is not as expected ",
+ connectionActor, CurrentActor.get());
+
+ /**
+ * Set the actor to now be the Channel actor so testing the ability
+ * to push the actor on to the stack:
+ *
+ * CurrentActor -> Channel
+ * Stack -> Connection, null
+ *
+ */
+
+ AMQChannel channel = new AMQChannel(getSession(), 1, getSession().getVirtualHost().getMessageStore());
+
+ AMQPChannelActor channelActor = new AMQPChannelActor(channel,
+ new NullRootMessageLogger());
+
+ CurrentActor.set(channelActor);
+
+ //Use the Actor to send a simple message
+ sendTestLogMessage(CurrentActor.get());
+
+ // Verify it was the same actor as we set earlier
+ assertEquals("Retrieved actor is not as expected ",
+ channelActor, CurrentActor.get());
+
+ // Remove the ChannelActor from the stack
+ CurrentActor.remove();
+ /*
+ * Pop the actor on to the stack:
+ *
+ * CurrentActor -> Connection
+ * Stack -> null
+ */
+
+
+ // Verify we now have the same connection actor as we set earlier
+ assertEquals("Retrieved actor is not as expected ",
+ connectionActor, CurrentActor.get());
+
+ // Verify that removing the our last actor it returns us to the test
+ // default that the ApplicationRegistry sets.
+ CurrentActor.remove();
+ /*
+ * Pop the actor on to the stack:
+ *
+ * CurrentActor -> null
+ */
+
+
+ assertEquals("CurrentActor not the Test default", TestLogActor.class ,CurrentActor.get().getClass());
+ }
+
+ /**
+ * Test the setting CurrentActor is done correctly as a ThreadLocal.
+ *
+ * The test starts 'THREADS' threads that all set the CurrentActor log
+ * a message then remove the actor.
+ *
+ * Checks are done to ensure that there is no set actor after the remove.
+ *
+ * If the ThreadLocal was not working then having concurrent actor sets
+ * would result in more than one actor and so the remove will not result
+ * in the clearing of the CurrentActor
+ *
+ */
+ public void testThreadLocal()
+ {
+
+ new Runnable(){
+ public void run()
+ {
+ System.out.println(_errors[0]);
+ }
+ };
+
+ // Setup the threads
+ Thread[] threads = new Thread[THREADS];
+ for (int count = 0; count < THREADS; count++)
+ {
+ Runnable test = new LogMessagesWithAConnectionActor(count);
+ threads[count] = new Thread(test);
+ }
+
+ //Run the threads
+ for (int count = 0; count < THREADS; count++)
+ {
+ threads[count].start();
+ }
+
+ // Wait for them to finish
+ for (int count = 0; count < THREADS; count++)
+ {
+ try
+ {
+ threads[count].join();
+ }
+ catch (InterruptedException e)
+ {
+ //if we are interrupted then we will exit shortly.
+ }
+ }
+
+ // Verify that none of the tests threw an exception
+ for (int count = 0; count < THREADS; count++)
+ {
+ if (_errors[count] != null)
+ {
+ _errors[count].printStackTrace();
+ fail("Error occured in thread:" + count);
+ }
+ }
+ }
+
+ /**
+ * Creates a new ConnectionActor and logs the given number of messages
+ * before removing the actor and validating that there is no set actor.
+ */
+ public class LogMessagesWithAConnectionActor implements Runnable
+ {
+ int count;
+
+ LogMessagesWithAConnectionActor(int count)
+ {
+ this.count = count;
+ }
+
+ public void run()
+ {
+
+ // Create a new actor using retrieving the rootMessageLogger from
+ // the default ApplicationRegistry.
+ //fixme reminder that we need a better approach for broker testing.
+ try
+ {
+
+ AMQPConnectionActor actor = new AMQPConnectionActor(getSession(),
+ new NullRootMessageLogger());
+
+ CurrentActor.set(actor);
+
+ //Use the Actor to send a simple message
+ sendTestLogMessage(CurrentActor.get());
+
+ // Verify it was the same actor as we set earlier
+ assertEquals("Retrieved actor is not as expected ",
+ actor, CurrentActor.get());
+
+ // Verify that removing the actor works for this thread
+ CurrentActor.remove();
+
+ assertNull("CurrentActor should be null", CurrentActor.get());
+ }
+ catch (Exception e)
+ {
+ _errors[count] = e;
+ }
+
+ }
+ }
+
+}