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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
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  package org.apache.activemq.artemis.tests.leak;
  
  import javax.jms.Connection;
  import javax.jms.ConnectionFactory;
  import javax.jms.Message;
  import javax.jms.MessageConsumer;
  import javax.jms.MessageProducer;
  import javax.jms.Session;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicBoolean;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import io.github.checkleak.core.CheckLeak;
  import org.apache.activemq.artemis.api.core.ActiveMQException;
  import org.apache.activemq.artemis.api.core.QueueConfiguration;
  import org.apache.activemq.artemis.api.core.RoutingType;
  import org.apache.activemq.artemis.core.protocol.core.impl.RemotingConnectionImpl;
  import org.apache.activemq.artemis.core.server.ActiveMQServer;
  import org.apache.activemq.artemis.core.server.Queue;
  import org.apache.activemq.artemis.core.server.impl.ActiveMQServerImpl;
  import org.apache.activemq.artemis.core.server.impl.AddressInfo;
  import org.apache.activemq.artemis.core.server.impl.ServerStatus;
  import org.apache.activemq.artemis.tests.util.CFUtil;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  import static org.apache.activemq.artemis.tests.leak.MemoryAssertions.assertMemory;
  import static org.apache.activemq.artemis.tests.leak.MemoryAssertions.basicMemoryAsserts;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.junit.jupiter.api.Assumptions.assumeTrue;
  
  public class ConnectionDroppedLeakTest extends AbstractLeakTest {
  
     private ConnectionFactory createConnectionFactory(String protocol) {
        if (protocol.equals("AMQP")) {
           return CFUtil.createConnectionFactory("AMQP", "amqp://localhost:61616?amqp.idleTimeout=120000&failover.maxReconnectAttempts=1&jms.prefetchPolicy.all=10&jms.forceAsyncAcks=true");
        } else {
           return CFUtil.createConnectionFactory(protocol, "tcp://localhost:61616");
        }
     }
  
     private static final String QUEUE_NAME = "QUEUE_DROP";
  
     ActiveMQServer server;
  
     Queue serverQueue;
  
     @BeforeAll
     public static void beforeClass() throws Exception {
        assumeTrue(CheckLeak.isLoaded());
     }
  
     @AfterEach
     public void validateServer() throws Exception {
        CheckLeak checkLeak = new CheckLeak();
  
        // I am doing this check here because the test method might hold a client connection
        // so this check has to be done after the test, and before the server is stopped
        assertMemory(checkLeak, 0, RemotingConnectionImpl.class.getName());
  
        server.stop();
  
        server = null;
        serverQueue = null;
  
        clearServers();
        ServerStatus.clear();
  
        assertMemory(checkLeak, 0, ActiveMQServerImpl.class.getName());
     }
  
     @Override
     @BeforeEach
     public void setUp() throws Exception {
        server = createServer(true, createDefaultConfig(1, true));
        server.getConfiguration().setJournalPoolFiles(4).setJournalMinFiles(2);
        server.start();
        server.addAddressInfo(new AddressInfo(QUEUE_NAME).addRoutingType(RoutingType.ANYCAST));
  
        serverQueue = server.createQueue(QueueConfiguration.of(QUEUE_NAME).setAddress(QUEUE_NAME).setRoutingType(RoutingType.ANYCAST).setDurable(true));
     }
  
     @Test
     public void testDropConnectionsAMQP() throws Exception {
        doDropConnections("AMQP");
     }
  
     @Test
     public void testDropConnectionsCORE() throws Exception {
        doDropConnections("CORE");
     }
  
     @Test
     public void testDropConnectionsOPENWIRE() throws Exception {
        doDropConnections("OPENWIRE");
     }
  
     private void doDropConnections(String protocol) throws Exception {
        basicMemoryAsserts();
  
        CountDownLatch latchDone = new CountDownLatch(2);
        CountDownLatch latchReceived = new CountDownLatch(50);
        AtomicInteger errors = new AtomicInteger(2);
        AtomicBoolean running = new AtomicBoolean(true);
  
        ExecutorService executorService = Executors.newFixedThreadPool(2);
        runAfter(executorService::shutdownNow);
        runAfter(() -> running.set(false));
  
        executorService.execute(() -> {
           ConnectionFactory cf = createConnectionFactory(protocol);
           Connection connection = null;
           try {
              connection = cf.createConnection(); // I will leave this open on purpose
              connection.start();
              Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
              MessageConsumer consumer = session.createConsumer(session.createQueue(QUEUE_NAME));
              while (running.get()) {
                 Message message = consumer.receive(100);
                 if (message != null) {
                    latchReceived.countDown();
                    session.commit();
                 }
              }
           } catch (Exception e) {
              errors.incrementAndGet();
           } finally {
              if (protocol.equals("OPENWIRE")) {
                 try {
                    connection.close();// only closing the openwire as it would leave a hanging thread
                 } catch (Throwable ignored) {
                 }
              }
              latchDone.countDown();
           }
        });
  
        executorService.execute(() -> {
           ConnectionFactory cf = createConnectionFactory(protocol);
           Connection connection = null;
           try {
              connection = cf.createConnection(); // I will leave this open on purpose
              Session session = connection.createSession(true, Session.SESSION_TRANSACTED);
              MessageProducer producer = session.createProducer(session.createQueue(QUEUE_NAME));
              while (running.get()) {
                 producer.send(session.createTextMessage("hello"));
                 session.commit();
              }
           } catch (Exception e) {
              errors.incrementAndGet();
           } finally {
              if (protocol.equals("OPENWIRE")) {
                 try {
                    connection.close();// only closing the openwire as it may leave a hanging thread
                 } catch (Throwable ignored) {
                 }
              }
              latchDone.countDown();
           }
        });
  
        assertTrue(latchReceived.await(10, TimeUnit.SECONDS));
  
        server.getRemotingService().getConnections().forEach(r -> {
           r.fail(new ActiveMQException("it's a simulation"));
        });
  
        assertTrue(latchDone.await(30, TimeUnit.SECONDS));
        running.set(false);
  
        serverQueue.deleteAllReferences();
  
        basicMemoryAsserts();
     }
  }