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.bugs;
  
  import java.util.concurrent.Callable;
  import java.util.concurrent.CountDownLatch;
  import java.util.concurrent.ExecutorService;
  import java.util.concurrent.Executors;
  import java.util.concurrent.TimeUnit;
  
  import jakarta.jms.JMSException;
  import jakarta.jms.Message;
  import jakarta.jms.MessageListener;
  import jakarta.jms.Session;
  import jakarta.jms.TextMessage;
  
  import junit.framework.TestCase;
  
  import org.apache.activemq.ActiveMQConnectionFactory;
  import org.apache.activemq.broker.BrokerService;
  import org.apache.activemq.command.ActiveMQQueue;
  import org.apache.activemq.network.NetworkConnector;
  import org.apache.activemq.pool.PooledConnectionFactory;
  import org.apache.activemq.store.memory.MemoryPersistenceAdapter;
  import org.springframework.jms.core.JmsTemplate;
  import org.springframework.jms.core.MessageCreator;
  import org.springframework.jms.listener.DefaultMessageListenerContainer;
  
  public class AMQ2754Test extends TestCase {
  
      public void testNetworkOfBrokers() throws Exception {
          BrokerService brokerService1 = null;
          BrokerService brokerService2 = null;
  
          String broker1Uri;
          String broker2Uri;
  
          final int total = 100;
          final CountDownLatch latch = new CountDownLatch(total);
          final boolean conduitSubscriptions = true;
          try {
  
              {
                  brokerService1 = new BrokerService();
                  brokerService1.setBrokerName("consumer");
                  brokerService1.setUseJmx(false);
                  brokerService1.setPersistenceAdapter(new MemoryPersistenceAdapter());
                  broker1Uri = brokerService1.addConnector("tcp://0.0.0.0:0").getPublishableConnectString();
                  brokerService1.start();
              }
  
              {
                  brokerService2 = new BrokerService();
                  brokerService2.setBrokerName("producer");
                  brokerService2.setUseJmx(false);
                  brokerService2.setPersistenceAdapter(new MemoryPersistenceAdapter());
                  broker2Uri = brokerService2.addConnector("tcp://0.0.0.0:0").getPublishableConnectString();
                  NetworkConnector network2 = brokerService2.addNetworkConnector("static:("+broker1Uri+")");
                  network2.setName("network1");
                  network2.setDynamicOnly(true);
                  network2.setConduitSubscriptions(conduitSubscriptions);
                  network2.setNetworkTTL(3);
                  network2.setPrefetchSize(1);
                  brokerService2.start();
              }
  
              ExecutorService pool = Executors.newSingleThreadExecutor();
  
              ActiveMQConnectionFactory connectionFactory1 =
                  new ActiveMQConnectionFactory("failover:("+broker1Uri+")");
  
              connectionFactory1.setWatchTopicAdvisories(false);
              final DefaultMessageListenerContainer container = new DefaultMessageListenerContainer();
              container.setConnectionFactory(connectionFactory1);
              container.setMaxConcurrentConsumers(10);
              container.setSessionAcknowledgeMode(Session.AUTO_ACKNOWLEDGE);
              container.setCacheLevel(DefaultMessageListenerContainer.CACHE_CONSUMER);
              container.setDestination(new ActiveMQQueue("testingqueue"));
              container.setMessageListener(new MessageListener() {
                  @Override
                  public void onMessage(Message message) {
                      latch.countDown();
                  }
              });
              container.setMaxMessagesPerTask(1);
              container.afterPropertiesSet();
              container.start();
  
              final String finalBroker2Uri = broker2Uri;
  
              pool.submit(new Callable<Object>() {
                  @Override
                  public Object call() throws Exception {
                      try {
                          final int batch = 10;
                          ActiveMQConnectionFactory connectionFactory2 =
                              new ActiveMQConnectionFactory("failover:("+finalBroker2Uri+")");
                          PooledConnectionFactory pooledConnectionFactory = new PooledConnectionFactory(connectionFactory2);
                          connectionFactory2.setWatchTopicAdvisories(false);
                          JmsTemplate template = new JmsTemplate(pooledConnectionFactory);
                          ActiveMQQueue queue = new ActiveMQQueue("testingqueue");
                          for(int b = 0; b < batch; b++) {
                              for(int i = 0; i < (total / batch); i++) {
                                  final String id = ":batch=" + b + "i=" + i;
                                  template.send(queue, new MessageCreator() {
                                      @Override
                                      public Message createMessage(Session session) throws JMSException {
                                          TextMessage message = session.createTextMessage();
                                          message.setText("Hello World!" + id);
                                          return message;
                                      }
                                  });
                              }
                              // give spring time to scale back again
                              while(container.getActiveConsumerCount() > 1) {
                                  System.out.println("active consumer count:" + container.getActiveConsumerCount());
                                  System.out.println("concurrent consumer count: " + container.getConcurrentConsumers());
                                  Thread.sleep(1000);
                              }
                          }
                          //pooledConnectionFactory.stop();
                      } catch(Throwable t) {
                          t.printStackTrace();
                      }
                      return null;
                  }
              });
  
              pool.shutdown();
              pool.awaitTermination(10, TimeUnit.SECONDS);
  
              int count = 0;
  
              // give it 20 seconds
              while(!latch.await(1, TimeUnit.SECONDS) && count++ < 20) {
                  System.out.println("count " + latch.getCount());
              }
  
              container.destroy();
  
          } finally {
              try { if(brokerService1 != null) {
                  brokerService1.stop();
              }} catch(Throwable t) { t.printStackTrace(); }
              try { if(brokerService2 != null) {
                  brokerService2.stop();
              }} catch(Throwable t) { t.printStackTrace(); }
          }
  
          if(latch.getCount() > 0) {
              fail("latch should have gone down to 0 but was " + latch.getCount());
          }
      }
  }