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.cluster;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  
  import javax.jms.Connection;
  import javax.jms.Session;
  import java.lang.invoke.MethodHandles;
  import java.util.concurrent.CountDownLatch;
  
  import org.apache.activemq.artemis.api.core.TransportConfiguration;
  import org.apache.activemq.artemis.api.jms.ActiveMQJMSClient;
  import org.apache.activemq.artemis.api.jms.JMSFactoryType;
  import org.apache.activemq.artemis.core.remoting.impl.invm.InVMConnectorFactory;
  import org.apache.activemq.artemis.tests.util.JMSClusteredTestBase;
  import org.junit.jupiter.api.Test;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class MultipleThreadsOpeningTest extends JMSClusteredTestBase {
  
     private static final Logger logger = LoggerFactory.getLogger(MethodHandles.lookup().lookupClass());
  
     /**
      * created for https://issues.apache.org/jira/browse/ARTEMIS-385
      */
     @Test
     public void testRepetitions() throws Exception {
        // This test was eventually failing with way over more iterations.
        // you might increase it for debugging
        final int ITERATIONS = 50;
  
        for (int i = 0; i < ITERATIONS; i++) {
           logger.info("#test {}", i);
           internalMultipleOpen(200, 1);
           tearDown();
           setUp();
        }
     }
  
     @Test
     public void testMultipleOpen() throws Exception {
        internalMultipleOpen(20, 500);
     }
  
     protected void internalMultipleOpen(final int numberOfThreads, final int numberOfOpens) throws Exception {
  
        cf1 = ActiveMQJMSClient.createConnectionFactoryWithHA(JMSFactoryType.CF, new TransportConfiguration(InVMConnectorFactory.class.getName(), generateInVMParams(1)));
        // I want all the threads aligned, just ready to start creating connections like in a car race
        final CountDownLatch flagAlignSemaphore = new CountDownLatch(numberOfThreads);
        final CountDownLatch flagStartRace = new CountDownLatch(1);
  
        class ThreadOpen extends Thread {
  
           ThreadOpen(int i) {
              super("MultipleThreadsOpeningTest/ThreadOpen::" + i);
           }
  
           int errors = 0;
  
           @Override
           public void run() {
  
              try {
                 flagAlignSemaphore.countDown();
                 flagStartRace.await();
  
                 for (int i = 0; i < numberOfOpens; i++) {
                    if (i > 0 && i % 100 == 0)
                       logger.debug("connections created on Thread {} {}", Thread.currentThread(), i);
                    Connection conn = cf1.createConnection();
                    Session sess = conn.createSession(true, Session.AUTO_ACKNOWLEDGE);
                    sess.close();
                    conn.close();
                 }
              } catch (Exception e) {
                 e.printStackTrace();
                 errors++;
              }
           }
        }
  
        ThreadOpen[] threads = new ThreadOpen[numberOfThreads];
  
        for (int i = 0; i < numberOfThreads; i++) {
           threads[i] = new ThreadOpen(i);
           threads[i].start();
        }
  
        flagAlignSemaphore.await();
        flagStartRace.countDown();
  
        try {
           for (ThreadOpen t : threads) {
              t.join(60000);
              assertFalse(t.isAlive());
              assertEquals(0, t.errors, "There are Errors on the test thread");
           }
        } finally {
           for (ThreadOpen t : threads) {
              if (t.isAlive()) {
                 t.interrupt();
              }
              t.join(1000);
           }
        }
     }
  }
  