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 java.lang.invoke.MethodHandles;
  import java.util.HashSet;
  import java.util.Set;
  import java.util.concurrent.BlockingQueue;
  import java.util.concurrent.LinkedBlockingQueue;
  
  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.ServerLocator;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.apache.activemq.artemis.utils.RandomUtil;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  public class MessageConcurrencyTest extends ActiveMQTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     private ActiveMQServer server;
  
     private final SimpleString ADDRESS = SimpleString.of("MessageConcurrencyTestAddress");
  
     private final SimpleString QUEUE_NAME = SimpleString.of("MessageConcurrencyTestQueue");
  
     private ServerLocator locator;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        server = createServer(false);
  
        server.start();
  
        locator = createInVMNonHALocator();
     }
  
     // Test that a created message can be sent via multiple producers on different sessions concurrently
     @Test
     public void testMessageConcurrency() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        ClientSession createSession = sf.createSession();
  
        Set<ClientSession> sendSessions = new HashSet<>();
  
        Set<Sender> senders = new HashSet<>();
  
        final int numSessions = 100;
  
        final int numMessages = 1000;
  
        for (int i = 0; i < numSessions; i++) {
           ClientSession sendSession = sf.createSession();
  
           sendSessions.add(sendSession);
  
           ClientProducer producer = sendSession.createProducer(ADDRESS);
  
           Sender sender = new Sender(numMessages, producer);
  
           senders.add(sender);
  
           sender.start();
        }
  
        for (int i = 0; i < numMessages; i++) {
           byte[] body = RandomUtil.randomBytes(1000);
  
           ClientMessage message = createSession.createMessage(false);
  
           message.getBodyBuffer().writeBytes(body);
  
           for (Sender sender : senders) {
              sender.queue.add(message);
           }
        }
  
        for (Sender sender : senders) {
           sender.join();
  
           assertFalse(sender.failed);
        }
  
        for (ClientSession sendSession : sendSessions) {
           sendSession.close();
        }
  
        createSession.close();
  
        sf.close();
     }
  
     // Test that a created message can be sent via multiple producers after being consumed from a single consumer
     @Test
     public void testMessageConcurrencyAfterConsumption() throws Exception {
        ClientSessionFactory sf = createSessionFactory(locator);
  
        ClientSession consumeSession = sf.createSession();
  
        final ClientProducer mainProducer = consumeSession.createProducer(ADDRESS);
  
        consumeSession.createQueue(QueueConfiguration.of(QUEUE_NAME).setAddress(ADDRESS));
  
        ClientConsumer consumer = consumeSession.createConsumer(QUEUE_NAME);
  
        consumeSession.start();
  
        Set<ClientSession> sendSessions = new HashSet<>();
  
        final Set<Sender> senders = new HashSet<>();
  
        final int numSessions = 100;
  
        final int numMessages = 1000;
  
        for (int i = 0; i < numSessions; i++) {
           ClientSession sendSession = sf.createSession();
  
           sendSessions.add(sendSession);
  
           ClientProducer producer = sendSession.createProducer(ADDRESS);
  
           Sender sender = new Sender(numMessages, producer);
  
           senders.add(sender);
  
           sender.start();
        }
  
        consumer.setMessageHandler(message -> {
           for (Sender sender : senders) {
              sender.queue.add(message);
           }
        });
  
        for (int i = 0; i < numMessages; i++) {
           byte[] body = RandomUtil.randomBytes(1000);
  
           ClientMessage message = consumeSession.createMessage(false);
  
           message.getBodyBuffer().writeBytes(body);
  
           mainProducer.send(message);
        }
  
        for (Sender sender : senders) {
           sender.join();
  
           assertFalse(sender.failed);
        }
  
        for (ClientSession sendSession : sendSessions) {
           sendSession.close();
        }
  
        consumer.close();
  
        consumeSession.deleteQueue(QUEUE_NAME);
  
        consumeSession.close();
  
        sf.close();
     }
  
     private class Sender extends Thread {
  
        private final BlockingQueue<ClientMessage> queue = new LinkedBlockingQueue<>();
  
        private final ClientProducer producer;
  
        private final int numMessages;
  
        Sender(final int numMessages, final ClientProducer producer) {
           this.numMessages = numMessages;
  
           this.producer = producer;
        }
  
        volatile boolean failed;
  
        @Override
        public void run() {
           try {
              for (int i = 0; i < numMessages; i++) {
                 ClientMessage msg = queue.take();
  
                 producer.send(msg);
              }
           } catch (Exception e) {
              logger.error("Failed to send message", e);
  
              failed = true;
           }
        }
     }
  
  }
  