QPID-3562: actually commit the test too

git-svn-id: https://svn.apache.org/repos/asf/qpid/trunk@1195215 13f79535-47bb-0310-9956-ffa450edef68

1 files changed, 116 insertions, 0 deletions

diff --git a/qpid/java/systests/src/main/java/org/apache/qpid/client/prefetch/PrefetchBehaviourTest.java b/qpid/java/systests/src/main/java/org/apache/qpid/client/prefetch/PrefetchBehaviourTest.java
new file mode 100644
index 0000000000..c0b07f239b
--- /dev/null
+++ b/qpid/java/systests/src/main/java/org/apache/qpid/client/prefetch/PrefetchBehaviourTest.java
@@ -0,0 +1,116 @@
+package org.apache.qpid.client.prefetch;
+
+import java.util.concurrent.CountDownLatch;
+import java.util.concurrent.TimeUnit;
+import java.util.concurrent.atomic.AtomicBoolean;
+
+import javax.jms.Connection;
+import javax.jms.Message;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageListener;
+import javax.jms.MessageProducer;
+import javax.jms.Queue;
+import javax.jms.Session;
+
+import org.apache.qpid.configuration.ClientProperties;
+import org.apache.qpid.test.utils.QpidBrokerTestCase;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class PrefetchBehaviourTest extends QpidBrokerTestCase
+{
+    protected static final Logger _logger = LoggerFactory.getLogger(PrefetchBehaviourTest.class);
+    private Connection _normalConnection;
+    private AtomicBoolean _exceptionCaught;
+    private CountDownLatch _processingStarted;
+    private CountDownLatch _processingCompleted;
+
+    protected void setUp() throws Exception
+    {
+        super.setUp();
+        _normalConnection = getConnection();
+        _exceptionCaught = new AtomicBoolean();
+        _processingStarted = new CountDownLatch(1);
+        _processingCompleted = new CountDownLatch(1);
+    }
+
+    /**
+     * Verifies that a slow processing asynchronous transacted consumer with prefetch=1 only
+     * gets 1 of the messages sent, with the second consumer picking up the others while the
+     * slow consumer is processing, i.e that prefetch=1 actually does what it says on the tin.
+     */
+    public void testPrefetchOneWithAsynchronousTransactedConsumer() throws Exception
+    {
+        final long processingTime = 5000;
+        
+        //create a second connection with prefetch set to 1
+        setTestClientSystemProperty(ClientProperties.MAX_PREFETCH_PROP_NAME, new Integer(1).toString());
+        Connection prefetch1Connection = getConnection();
+
+        prefetch1Connection.start();
+        _normalConnection.start();
+
+        //create an asynchronous consumer with simulated slow processing
+        final Session prefetch1session = prefetch1Connection.createSession(true, Session.SESSION_TRANSACTED);
+        Queue queue = prefetch1session.createQueue(getTestQueueName());
+        MessageConsumer prefetch1consumer = prefetch1session.createConsumer(queue);
+        prefetch1consumer.setMessageListener(new MessageListener()
+        {
+            public void onMessage(Message message)
+            {
+                try
+                {
+                    _logger.debug("starting processing");
+                    _processingStarted.countDown();
+                    _logger.debug("processing started");
+
+                    //simulate message processing
+                    Thread.sleep(processingTime);
+
+                    prefetch1session.commit();
+
+                    _processingCompleted.countDown();
+                }
+                catch(Exception e)
+                {
+                    _logger.error("Exception caught in message listener");
+                    _exceptionCaught.set(true);
+                }
+            }
+        });
+
+        //create producer and send 5 messages
+        Session producerSession = _normalConnection.createSession(true, Session.SESSION_TRANSACTED);
+        MessageProducer producer = producerSession.createProducer(queue);
+
+        for (int i = 0; i < 5; i++)
+        {
+            producer.send(producerSession.createTextMessage("test"));
+        }
+        producerSession.commit();
+
+        //wait for the first message to start being processed by the async consumer
+        assertTrue("Async processing failed to start in allowed timeframe", _processingStarted.await(2000, TimeUnit.MILLISECONDS));
+        _logger.debug("proceeding with test");
+
+        //try to consumer the other messages with another consumer while the async procesisng occurs
+        Session normalSession = _normalConnection.createSession(true, Session.AUTO_ACKNOWLEDGE);
+        MessageConsumer normalConsumer = normalSession.createConsumer(queue);        
+        
+        Message msg;
+        // Check that other consumer gets the other 4 messages
+        for (int i = 0; i < 4; i++)
+        {
+            msg = normalConsumer.receive(1500);
+            assertNotNull("Consumer should receive 4 messages",msg);                
+        }
+        msg = normalConsumer.receive(250);
+        assertNull("Consumer should not have received a 5th message",msg);
+
+        //wait for the other consumer to finish to ensure it completes ok
+        _logger.debug("waiting for async consumer to complete");
+        assertTrue("Async processing failed to complete in allowed timeframe", _processingStarted.await(processingTime + 2000, TimeUnit.MILLISECONDS));
+        assertFalse("Unexpecte exception during async message processing",_exceptionCaught.get());
+    }
+
+}