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.transport.mqtt;
  
  import static org.junit.Assert.assertTrue;
  
  import java.io.IOException;
  import java.net.Socket;
  import java.util.Arrays;
  import java.util.Collection;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.TimeUnit;
  import java.util.concurrent.atomic.AtomicInteger;
  
  import javax.net.ssl.SSLSocketFactory;
  
  import org.apache.activemq.util.Wait;
  import org.fusesource.mqtt.client.BlockingConnection;
  import org.fusesource.mqtt.client.MQTT;
  import org.junit.After;
  import org.junit.Ignore;
  import org.junit.Test;
  import org.junit.runner.RunWith;
  import org.junit.runners.Parameterized;
  import org.junit.runners.Parameterized.Parameters;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  /**
   * Test that connection attempts that don't send a CONNECT frame will
   * get cleaned up by the inactivity monitor.
   */
  @RunWith(Parameterized.class)
  public class MQTTConnectTest extends MQTTTestSupport {
  
      private static final Logger LOG = LoggerFactory.getLogger(MQTTConnectTest.class);
  
      private Socket connection;
  
      @Parameters(name="{0}")
      public static Collection<Object[]> data() {
          return Arrays.asList(new Object[][] {
                  {"mqtt", false},
                  {"mqtt+ssl", true},
                  {"mqtt+nio", false},
                  {"mqtt+nio+ssl", true}
              });
      }
  
      public MQTTConnectTest(String connectorScheme, boolean useSSL) {
          super(connectorScheme, useSSL);
      }
  
      @Override
      @After
      public void tearDown() throws Exception {
          if (connection != null) {
              try {
                  connection.close();
              } catch (Throwable e) {}
              connection = null;
          }
          super.tearDown();
      }
  
      @Override
      public String getProtocolConfig() {
          return "transport.connectAttemptTimeout=1000";
      }
  
      @Test(timeout = 90000)
      @Ignore("Failing with JDK11")
      public void testParallelConnectPlain() throws Exception {
          final int THREAD_COUNT = 16;
          final int CONNECTION_COUNT = 100;
          ExecutorService executorService = Executors.newFixedThreadPool(THREAD_COUNT);
          final AtomicInteger clientIdGemeratpr = new AtomicInteger();
          for (int i = 0; i < CONNECTION_COUNT; i++) {
              executorService.execute(new Runnable() {
                  @Override
                  public void run() {
  
                      try {
                          MQTT mqtt = createMQTTConnection();
                          mqtt.setClientId("client-" + clientIdGemeratpr.incrementAndGet());
                          mqtt.setCleanSession(true);
  
                          BlockingConnection connection = mqtt.blockingConnection();
                          connection.connect();
                          connection.disconnect();
                      } catch (Exception e) {
                          LOG.error("unexpected exception on connect/disconnect", e);
                          exceptions.add(e);
                      }
                  }
              });
          }
  
          executorService.shutdown();
          assertTrue("executor done on time", executorService.awaitTermination(60, TimeUnit.SECONDS));
      }
  
      @Test(timeout = 60 * 1000)
      public void testInactivityMonitor() throws Exception {
  
          Thread t1 = new Thread() {
  
              @Override
              public void run() {
                  try {
                      connection = createConnection();
                      connection.getOutputStream().write(0);
                      connection.getOutputStream().flush();
                  } catch (Exception ex) {
                      LOG.error("unexpected exception on connect/disconnect", ex);
                      exceptions.add(ex);
                  }
              }
          };
  
          t1.start();
  
          assertTrue("one connection", Wait.waitFor(new Wait.Condition() {
               @Override
               public boolean isSatisified() throws Exception {
                   return 1 == brokerService.getTransportConnectors().get(0).connectionCount();
               }
           }, TimeUnit.SECONDS.toMillis(30), TimeUnit.MILLISECONDS.toMillis(100)));
  
          // and it should be closed due to inactivity
          assertTrue("no dangling connections", Wait.waitFor(new Wait.Condition() {
              @Override
              public boolean isSatisified() throws Exception {
                  return 0 == brokerService.getTransportConnectors().get(0).connectionCount();
              }
          }, TimeUnit.SECONDS.toMillis(30), TimeUnit.MILLISECONDS.toMillis(100)));
  
          assertTrue("no exceptions", exceptions.isEmpty());
      }
  
      protected Socket createConnection() throws IOException {
          if (isUseSSL()) {
              return SSLSocketFactory.getDefault().createSocket("localhost", port);
          } else {
              return new Socket("localhost", port);
          }
      }
  }
  