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 java.util.concurrent.CountDownLatch;
  
  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 AutogroupIdTest 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 final SimpleString groupTestQ = SimpleString.of("testGroupQueue");
  
     private ActiveMQServer server;
  
     private ServerLocator locator;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        server = createServer(false);
  
        server.start();
  
        waitForServerToStart(server);
  
        locator = createInVMNonHALocator();
     }
  
     /**
      * Tests when the autogroupid is set only 1 consumer (out of 2) gets all the messages from a single producer.
      */
     @Test
     public void testGroupIdAutomaticallySet() throws Exception {
        locator.setAutoGroup(true);
        ClientSessionFactory sf = createSessionFactory(locator);
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(groupTestQ).setDurable(false));
  
        ClientProducer producer = session.createProducer(groupTestQ);
  
        final CountDownLatch latch = new CountDownLatch(100);
  
        MyMessageHandler myMessageHandler = new MyMessageHandler(latch);
        MyMessageHandler myMessageHandler2 = new MyMessageHandler(latch);
  
        ClientConsumer consumer = session.createConsumer(groupTestQ);
        consumer.setMessageHandler(myMessageHandler);
        ClientConsumer consumer2 = session.createConsumer(groupTestQ);
        consumer2.setMessageHandler(myMessageHandler2);
  
        session.start();
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           producer.send(session.createMessage(false));
        }
        waitForLatch(latch);
  
        session.close();
  
        assertEquals(100, myMessageHandler.messagesReceived);
        assertEquals(0, myMessageHandler2.messagesReceived);
  
     }
  
     /**
      * Tests when the autogroupid is set only 2 consumers (out of 3) gets all the messages from 2 producers.
      */
     @Test
     public void testGroupIdAutomaticallySetMultipleProducers() throws Exception {
        locator.setAutoGroup(true);
        ClientSessionFactory sf = createSessionFactory(locator);
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(groupTestQ).setDurable(false));
  
        ClientProducer producer = session.createProducer(groupTestQ);
        ClientProducer producer2 = session.createProducer(groupTestQ);
  
        final CountDownLatch latch = new CountDownLatch(200);
  
        MyMessageHandler myMessageHandler = new MyMessageHandler(latch);
        MyMessageHandler myMessageHandler2 = new MyMessageHandler(latch);
        MyMessageHandler myMessageHandler3 = new MyMessageHandler(latch);
  
        ClientConsumer consumer = session.createConsumer(groupTestQ);
        consumer.setMessageHandler(myMessageHandler);
        ClientConsumer consumer2 = session.createConsumer(groupTestQ);
        consumer2.setMessageHandler(myMessageHandler2);
        ClientConsumer consumer3 = session.createConsumer(groupTestQ);
        consumer3.setMessageHandler(myMessageHandler3);
  
        session.start();
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           producer.send(session.createMessage(false));
        }
        for (int i = 0; i < numMessages; i++) {
           producer2.send(session.createMessage(false));
        }
        waitForLatch(latch);
  
        session.close();
  
        assertEquals(100, myMessageHandler.messagesReceived);
        assertEquals(100, myMessageHandler2.messagesReceived);
        assertEquals(0, myMessageHandler3.messagesReceived);
     }
  
     /**
      * Tests that even though we have a grouping round robin distributor we don't pin the consumer as autogroup is false.
      */
     @Test
     public void testGroupIdAutomaticallyNotSet() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        ClientSession session = sf.createSession(false, true, true);
  
        session.createQueue(QueueConfiguration.of(groupTestQ).setDurable(false));
  
        ClientProducer producer = session.createProducer(groupTestQ);
  
        final CountDownLatch latch = new CountDownLatch(100);
  
        MyMessageHandler myMessageHandler = new MyMessageHandler(latch);
        MyMessageHandler myMessageHandler2 = new MyMessageHandler(latch);
  
        ClientConsumer consumer = session.createConsumer(groupTestQ);
        consumer.setMessageHandler(myMessageHandler);
        ClientConsumer consumer2 = session.createConsumer(groupTestQ);
        consumer2.setMessageHandler(myMessageHandler2);
  
        session.start();
  
        final int numMessages = 100;
  
        for (int i = 0; i < numMessages; i++) {
           producer.send(session.createMessage(false));
        }
        waitForLatch(latch);
  
        session.close();
  
        assertEquals(50, myMessageHandler.messagesReceived);
        assertEquals(50, myMessageHandler2.messagesReceived);
  
     }
  
     private static class MyMessageHandler implements MessageHandler {
  
        int messagesReceived = 0;
  
        private final CountDownLatch latch;
  
        private MyMessageHandler(final CountDownLatch latch) {
           this.latch = latch;
        }
  
        @Override
        public void onMessage(final ClientMessage message) {
           messagesReceived++;
           try {
              message.acknowledge();
           } catch (ActiveMQException e) {
              e.printStackTrace();
           }
           latch.countDown();
        }
     }
  }
  