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   * 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.concurrent.CountDownLatch;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.artemis.api.core.Interceptor;
  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.protocol.core.impl.PacketImpl;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  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.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;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  
  public class ProducerTest extends ActiveMQTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     private ActiveMQServer server;
  
     private final SimpleString QUEUE = SimpleString.of("ConsumerTestQueue");
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        super.setUp();
  
        server = createServer(false);
  
        server.start();
     }
  
     @Test
     public void testProducerWithSmallWindowSizeAndLargeMessage() throws Exception {
        final CountDownLatch latch = new CountDownLatch(1);
        server.getRemotingService().addIncomingInterceptor((Interceptor) (packet, connection) -> {
           if (packet.getType() == PacketImpl.SESS_SEND) {
              latch.countDown();
           }
           return true;
        });
        ServerLocator locator = createInVMNonHALocator().setConfirmationWindowSize(100);
        ClientSessionFactory cf = locator.createSessionFactory();
        ClientSession session = cf.createSession(false, true, true);
        ClientProducer producer = session.createProducer(QUEUE);
        ClientMessage message = session.createMessage(true);
        byte[] body = new byte[1000];
        message.getBodyBuffer().writeBytes(body);
        producer.send(message);
        assertTrue(latch.await(5, TimeUnit.SECONDS));
        session.close();
        locator.close();
     }
  
     @Test
     public void testProducerMultiThread() throws Exception {
        final ServerLocator locator = createInVMNonHALocator();
        AddressSettings setting = new AddressSettings().setAddressFullMessagePolicy(AddressFullMessagePolicy.BLOCK).setMaxSizeBytes(10 * 1024);
        server.stop();
        server.getConfiguration().getAddressSettings().clear();
        server.getConfiguration().getAddressSettings().put(QUEUE.toString(), setting);
        server.start();
  
        server.createQueue(QueueConfiguration.of(QUEUE));
  
        for (int i = 0; i < 100; i++) {
           final CountDownLatch latch = new CountDownLatch(1);
           logger.debug("Try {}", i);
           ClientSessionFactory cf = locator.createSessionFactory();
           final ClientSession session = cf.createSession(false, true, true);
  
           Thread t = new Thread(() -> {
              try {
                 ClientProducer producer = session.createProducer();
  
                 for (int i1 = 0; i1 < 62; i1++) {
                    if (i1 == 30) {
                       // the point where the send would block
                       latch.countDown();
                    }
                    ClientMessage msg = session.createMessage(false);
                    msg.getBodyBuffer().writeBytes(new byte[2048]);
                    producer.send(QUEUE, msg);
                 }
              } catch (Exception e) {
                 e.printStackTrace();
              }
           });
  
           t.start();
           assertTrue(latch.await(10, TimeUnit.SECONDS));
           session.close();
  
           t.join(5000);
  
           if (!t.isAlive()) {
              t.interrupt();
           }
  
           assertFalse(t.isAlive());
  
           ClientSession sessionConsumer = cf.createSession();
           sessionConsumer.start();
           ClientConsumer cons = sessionConsumer.createConsumer(QUEUE);
           while (true) {
              ClientMessage msg = cons.receiveImmediate();
              if (msg == null) {
                 break;
              }
              msg.acknowledge();
              sessionConsumer.commit();
           }
  
           cf.close();
        }
     }
  
  }
  