content: /*
   * 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.artemis.tests.integration.client;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertNotNull;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import org.apache.activemq.artemis.api.core.ActiveMQException;
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.SimpleString;
  import org.apache.activemq.artemis.api.core.client.ClientConsumer;
  import org.apache.activemq.artemis.api.core.client.ClientMessage;
  import org.apache.activemq.artemis.api.core.client.ClientProducer;
  import org.apache.activemq.artemis.api.core.client.ClientSession;
  import org.apache.activemq.artemis.api.core.client.ClientSessionFactory;
  import org.apache.activemq.artemis.api.core.client.MessageHandler;
  import org.apache.activemq.artemis.api.core.client.ServerLocator;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  public class DeliveryOrderTest extends ActiveMQTestBase {
  
     public final SimpleString addressA = SimpleString.of("addressA");
  
     public final SimpleString queueA = SimpleString.of("queueA");
  
     public final SimpleString queueB = SimpleString.of("queueB");
  
     public final SimpleString queueC = SimpleString.of("queueC");
  
     private ServerLocator locator;
  
     private ActiveMQServer server;
  
     private ClientSessionFactory cf;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
        locator = createInVMNonHALocator();
        server = createServer(false);
        server.start();
        cf = createSessionFactory(locator);
     }
  
     @Test
     public void testSendDeliveryOrderOnCommit() throws Exception {
        ClientSession sendSession = cf.createSession(false, false, true);
        ClientProducer cp = sendSession.createProducer(addressA);
        int numMessages = 1000;
        sendSession.createQueue(QueueConfiguration.of(queueA).setAddress(addressA).setDurable(false));
        for (int i = 0; i < numMessages; i++) {
           ClientMessage cm = sendSession.createMessage(false);
           cm.getBodyBuffer().writeInt(i);
           cp.send(cm);
           if (i % 10 == 0) {
              sendSession.commit();
           }
           sendSession.commit();
        }
        ClientConsumer c = sendSession.createConsumer(queueA);
        sendSession.start();
        for (int i = 0; i < numMessages; i++) {
           ClientMessage cm = c.receive(5000);
           assertNotNull(cm);
           assertEquals(i, cm.getBodyBuffer().readInt());
        }
        sendSession.close();
     }
  
     @Test
     public void testReceiveDeliveryOrderOnRollback() throws Exception {
        ClientSession sendSession = cf.createSession(false, true, false);
        ClientProducer cp = sendSession.createProducer(addressA);
        int numMessages = 1000;
        sendSession.createQueue(QueueConfiguration.of(queueA).setAddress(addressA).setDurable(false));
        for (int i = 0; i < numMessages; i++) {
           ClientMessage cm = sendSession.createMessage(false);
           cm.getBodyBuffer().writeInt(i);
           cp.send(cm);
        }
        ClientConsumer c = sendSession.createConsumer(queueA);
        sendSession.start();
        for (int i = 0; i < numMessages; i++) {
           ClientMessage cm = c.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
           assertEquals(i, cm.getBodyBuffer().readInt());
        }
        sendSession.rollback();
        for (int i = 0; i < numMessages; i++) {
           ClientMessage cm = c.receive(5000);
           assertNotNull(cm);
           cm.acknowledge();
           assertEquals(i, cm.getBodyBuffer().readInt());
        }
        sendSession.close();
     }
  
     @Test
     public void testMultipleConsumersMessageOrder() throws Exception {
        ClientSession sendSession = cf.createSession(false, true, true);
        ClientSession recSession = cf.createSession(false, true, true);
        sendSession.createQueue(QueueConfiguration.of(queueA).setAddress(addressA).setDurable(false));
        int numReceivers = 100;
        AtomicInteger count = new AtomicInteger(0);
        int numMessage = 10000;
        ClientConsumer[] clientConsumers = new ClientConsumer[numReceivers];
        Receiver[] receivers = new Receiver[numReceivers];
        CountDownLatch latch = new CountDownLatch(numMessage);
        for (int i = 0; i < numReceivers; i++) {
           clientConsumers[i] = recSession.createConsumer(queueA);
           receivers[i] = new Receiver(latch);
           clientConsumers[i].setMessageHandler(receivers[i]);
        }
        recSession.start();
        ClientProducer clientProducer = sendSession.createProducer(addressA);
        for (int i = 0; i < numMessage; i++) {
           ClientMessage cm = sendSession.createMessage(false);
           cm.getBodyBuffer().writeInt(count.getAndIncrement());
           clientProducer.send(cm);
        }
        assertTrue(latch.await(10, TimeUnit.SECONDS));
        for (Receiver receiver : receivers) {
           assertFalse(receiver.failed, "" + receiver.lastMessage);
        }
        sendSession.close();
        recSession.close();
     }
  
     class Receiver implements MessageHandler {
  
        final CountDownLatch latch;
  
        int lastMessage = -1;
  
        boolean failed = false;
  
        Receiver(final CountDownLatch latch) {
           this.latch = latch;
        }
  
        @Override
        public void onMessage(final ClientMessage message) {
           int i = message.getBodyBuffer().readInt();
           try {
              message.acknowledge();
           } catch (ActiveMQException e) {
              e.printStackTrace();
           }
           if (i <= lastMessage) {
              failed = true;
           }
           lastMessage = i;
           latch.countDown();
        }
  
     }
  
  }
  