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.jms;
  
  import javax.jms.BytesMessage;
  import javax.jms.Connection;
  import javax.jms.ConnectionFactory;
  import javax.jms.DeliveryMode;
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Session;
  
  import org.apache.activemq.artemis.api.jms.ActiveMQJMSClient;
  import org.apache.activemq.artemis.core.config.Configuration;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.ActiveMQServers;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import java.lang.invoke.MethodHandles;
  
  public class FloodServerTest extends ActiveMQTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     private ActiveMQServer server;
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        Configuration config = createDefaultNettyConfig();
        server = addServer(ActiveMQServers.newActiveMQServer(config, false));
        server.start();
     }
  
     @Test
     public void testFlood() throws Exception {
        ConnectionFactory cf = ActiveMQJMSClient.createConnectionFactory("tcp://127.0.0.1:61616?retryInterval=1000&retryIntervalMultiplier=1.0&reconnectAttempts=-1&callTimeout=30000&clientFailureCheckPeriod=1000&maxRetryInterval=1000&blockOnDurableSend=false&blockOnAcknowledge=false", "cf");
  
        final int numProducers = 20;
  
        final int numConsumers = 20;
  
        final int numMessages = 10000;
  
        ProducerThread[] producers = new ProducerThread[numProducers];
  
        for (int i = 0; i < numProducers; i++) {
           producers[i] = new ProducerThread(cf, numMessages);
        }
  
        ConsumerThread[] consumers = new ConsumerThread[numConsumers];
  
        for (int i = 0; i < numConsumers; i++) {
           consumers[i] = new ConsumerThread(cf, numMessages);
        }
  
        for (int i = 0; i < numConsumers; i++) {
           consumers[i].start();
        }
  
        for (int i = 0; i < numProducers; i++) {
           producers[i].start();
        }
  
        for (int i = 0; i < numConsumers; i++) {
           consumers[i].join();
        }
  
        for (int i = 0; i < numProducers; i++) {
           producers[i].join();
        }
  
     }
  
     class ProducerThread extends Thread {
  
        private final Connection connection;
  
        private final Session session;
  
        private final MessageProducer producer;
  
        private final int numMessages;
  
        ProducerThread(final ConnectionFactory cf, final int numMessages) throws Exception {
           connection = cf.createConnection();
  
           session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
  
           producer = session.createProducer(ActiveMQJMSClient.createTopic("my-topic"));
  
           producer.setDeliveryMode(DeliveryMode.NON_PERSISTENT);
  
           this.numMessages = numMessages;
        }
  
        @Override
        public void run() {
           try {
              byte[] bytes = new byte[1000];
  
              BytesMessage message = session.createBytesMessage();
  
              message.writeBytes(bytes);
  
              for (int i = 0; i < numMessages; i++) {
                 producer.send(message);
              }
  
              connection.close();
           } catch (Exception e) {
              e.printStackTrace();
           }
        }
     }
  
     class ConsumerThread extends Thread {
  
        private final Connection connection;
  
        private final Session session;
  
        private final MessageConsumer consumer;
  
        private final int numMessages;
  
        ConsumerThread(final ConnectionFactory cf, final int numMessages) throws Exception {
           connection = cf.createConnection();
  
           connection.start();
  
           session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
  
           consumer = session.createConsumer(ActiveMQJMSClient.createTopic("my-topic"));
  
           this.numMessages = numMessages;
        }
  
        @Override
        public void run() {
           try {
              for (int i = 0; i < numMessages; i++) {
                 Message msg = consumer.receive();
  
                 if (msg == null) {
                    FloodServerTest.logger.error("message is null");
                    break;
                 }
              }
  
              connection.close();
           } catch (Exception e) {
              e.printStackTrace();
           }
        }
     }
  
  }
  