https://issues.apache.org/jira/browse/AMQ-4504 - ensure all dests in a composite get a chance to dispatch to a consumer after an ack

git-svn-id: https://svn.apache.org/repos/asf/activemq/trunk@1478183 13f79535-47bb-0310-9956-ffa450edef68

activemq-broker/src/main/java/org/apache/activemq/broker/region/PrefetchSubscription.java

@@ -415,6 +415,12 @@ public abstract class PrefetchSubscription extends AbstractSubscription {
         if (callDispatchMatched && destination != null) {
             destination.wakeup();
             dispatchPending();
+
+            if (pending.isEmpty()) {
+                for (Destination dest : destinations) {
+                    dest.wakeup();
+                }
+            }
         } else {
             LOG.debug("Acknowledgment out of sync (Normally occurs when failover connection reconnects): "
                     + ack);

activemq-unit-tests/src/test/java/org/apache/activemq/bugs/AMQ4504Test.java

@@ -0,0 +1,82 @@
+/**
+ * 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.activemq.bugs;
+
+import javax.jms.Connection;
+import javax.jms.ConnectionFactory;
+import javax.jms.MessageConsumer;
+import javax.jms.MessageProducer;
+import javax.jms.Session;
+import org.apache.activemq.ActiveMQConnectionFactory;
+import org.apache.activemq.broker.BrokerService;
+import org.apache.activemq.command.ActiveMQQueue;
+import org.apache.activemq.command.ActiveMQTextMessage;
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+
+
+import static org.junit.Assert.assertNotNull;
+
+public class AMQ4504Test {
+
+    BrokerService brokerService;
+
+    @Before
+    public void setup() throws Exception {
+        brokerService = new BrokerService();
+        brokerService.setPersistent(false);
+        brokerService.start();
+    }
+
+    @After
+    public void stop() throws Exception {
+        brokerService.stop();
+    }
+
+    @Test
+    public void testCompositeDestConsumer() throws Exception {
+
+        final int numDests = 20;
+        final int numMessages = 200;
+        StringBuffer stringBuffer = new StringBuffer();
+        for (int i=0; i<numDests; i++) {
+            if (stringBuffer.length() != 0) {
+                stringBuffer.append(',');
+            }
+            stringBuffer.append("ST." + i);
+        }
+        stringBuffer.append("?consumer.prefetchSize=100");
+        ActiveMQQueue activeMQQueue = new ActiveMQQueue(stringBuffer.toString());
+        ConnectionFactory factory = new ActiveMQConnectionFactory(brokerService.getVmConnectorURI());
+        Connection connection = factory.createConnection();
+        connection.start();
+        MessageProducer producer = connection.createSession(false, Session.AUTO_ACKNOWLEDGE).createProducer(activeMQQueue);
+        for (int i=0; i<numMessages; i++) {
+            producer.send(new ActiveMQTextMessage());
+        }
+
+        MessageConsumer consumer = connection.createSession(false, Session.AUTO_ACKNOWLEDGE).createConsumer(activeMQQueue);
+        try {
+            for (int i=0; i< numMessages * numDests; i++) {
+                assertNotNull("recieved:"  + i, consumer.receive(4000));
+            }
+        } finally {
+            connection.close();
+        }
+    }
+}