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.util.ArrayList;
  import java.util.HashMap;
  import java.util.List;
  import java.util.Map;
  import java.util.concurrent.CountDownLatch;
  
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.TransportConfiguration;
  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.config.Configuration;
  import org.apache.activemq.artemis.core.remoting.impl.netty.TransportConstants;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.ActiveMQServers;
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.core.settings.HierarchicalRepository;
  import org.apache.activemq.artemis.core.settings.impl.AddressFullMessagePolicy;
  import org.apache.activemq.artemis.core.settings.impl.AddressSettings;
  import org.apache.activemq.artemis.tests.util.ActiveMQTestBase;
  import org.apache.activemq.artemis.utils.UUIDGenerator;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  import java.lang.invoke.MethodHandles;
  
  public class NIOvsOIOTest extends ActiveMQTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     @Test
     public void testNIOPerf() throws Exception {
        testPerf(true);
     }
  
     @Test
     public void testOIOPerf() throws Exception {
        testPerf(false);
     }
  
     private void doTest(String dest) throws Exception {
  
        final int numSenders = 1;
  
        final int numReceivers = 1;
  
        final int numMessages = 20000;
  
        Receiver[] receivers = new Receiver[numReceivers];
  
        Sender[] senders = new Sender[numSenders];
  
        List<ClientSessionFactory> factories = new ArrayList<>();
  
        ServerLocator locator = createInVMNonHALocator();
  
        for (int i = 0; i < numReceivers; i++) {
  
           ClientSessionFactory sf = createSessionFactory(locator);
  
           factories.add(sf);
  
           receivers[i] = new Receiver(i, sf, numMessages * numSenders, dest);
  
           receivers[i].prepare();
  
           receivers[i].start();
        }
  
        for (int i = 0; i < numSenders; i++) {
           ClientSessionFactory sf = createSessionFactory(locator);
  
           factories.add(sf);
  
           senders[i] = new Sender(i, sf, numMessages, dest);
  
           senders[i].prepare();
        }
  
        long start = System.currentTimeMillis();
  
        for (int i = 0; i < numSenders; i++) {
           senders[i].start();
        }
  
        for (int i = 0; i < numSenders; i++) {
           senders[i].join();
        }
  
        for (int i = 0; i < numReceivers; i++) {
           receivers[i].await();
        }
  
        long end = System.currentTimeMillis();
  
        double rate = 1000 * (double) (numMessages * numSenders) / (end - start);
  
        logAndSystemOut("Rate is " + rate + " msgs sec");
  
        for (int i = 0; i < numSenders; i++) {
           senders[i].terminate();
        }
  
        for (int i = 0; i < numReceivers; i++) {
           receivers[i].terminate();
        }
  
        for (ClientSessionFactory sf : factories) {
           sf.close();
        }
  
        locator.close();
     }
  
     private void testPerf(boolean nio) throws Exception {
        Configuration config = createDefaultInVMConfig();
  
        Map<String, Object> params = new HashMap<>();
  
        params.put(TransportConstants.USE_NIO_PROP_NAME, nio);
  
        config.getAcceptorConfigurations().add(new TransportConfiguration(NETTY_ACCEPTOR_FACTORY, params));
  
        ActiveMQServer server = addServer(ActiveMQServers.newActiveMQServer(config, false));
  
        AddressSettings addressSettings = new AddressSettings().setAddressFullMessagePolicy(AddressFullMessagePolicy.BLOCK).setMaxSizeBytes(10 * 1024 * 1024);
  
        final String dest = "test-destination";
  
        HierarchicalRepository<AddressSettings> repos = server.getAddressSettingsRepository();
  
        repos.addMatch(dest, addressSettings);
  
        server.start();
  
        for (int i = 0; i < 2; i++) {
           doTest(dest);
        }
     }
  
     private class Sender extends Thread {
  
        private final ClientSessionFactory sf;
  
        private final int numMessages;
  
        private final String dest;
  
        private ClientSession session;
  
        private ClientProducer producer;
  
        private final int id;
  
        Sender(int id, ClientSessionFactory sf, final int numMessages, final String dest) {
           this.id = id;
  
           this.sf = sf;
  
           this.numMessages = numMessages;
  
           this.dest = dest;
        }
  
        void prepare() throws Exception {
           session = sf.createSession(true, true);
  
           producer = session.createProducer(dest);
        }
  
        @Override
        public void run() {
           ClientMessage msg = session.createMessage(false);
  
           for (int i = 0; i < numMessages; i++) {
              try {
                 producer.send(msg);
              } catch (Exception e) {
                 logger.error("Caught exception", e);
              }
           }
        }
  
        public void terminate() throws Exception {
           session.close();
        }
     }
  
     private class Receiver implements MessageHandler {
  
        private final ClientSessionFactory sf;
  
        private final int numMessages;
  
        private final String dest;
  
        private ClientSession session;
  
        private ClientConsumer consumer;
  
        private final int id;
  
        private String queueName;
  
        Receiver(int id, ClientSessionFactory sf, final int numMessages, final String dest) {
           this.id = id;
  
           this.sf = sf;
  
           this.numMessages = numMessages;
  
           this.dest = dest;
        }
  
        void prepare() throws Exception {
           session = sf.createSession(true, true, 0);
  
           queueName = UUIDGenerator.getInstance().generateStringUUID();
  
           session.createQueue(QueueConfiguration.of(queueName).setAddress(dest).setRoutingType(RoutingType.ANYCAST));
  
           consumer = session.createConsumer(queueName);
  
           consumer.setMessageHandler(this);
        }
  
        void start() throws Exception {
           session.start();
        }
  
        private final CountDownLatch latch = new CountDownLatch(1);
  
        void await() throws Exception {
           waitForLatch(latch);
        }
  
        private int count;
  
        @Override
        public void onMessage(ClientMessage msg) {
           try {
              msg.acknowledge();
           } catch (Exception e) {
              logger.error("Caught exception", e);
           }
  
           count++;
  
           if (count == numMessages) {
              latch.countDown();
           }
        }
  
        public void terminate() throws Exception {
           consumer.close();
  
           session.deleteQueue(queueName);
  
           session.close();
        }
     }
  
  }
  