/**
 * 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.perf;

import javax.jms.Connection;
import javax.jms.ConnectionFactory;
import javax.jms.JMSException;
import java.util.ArrayList;
import java.util.List;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 */
public class ConnectionChurnTest extends TestCase {

   protected static final int CONNECTION_COUNT = 200;
   private static final Logger LOG = LoggerFactory.getLogger(ConnectionChurnTest.class);
   protected BrokerService broker;
   protected String bindAddress = ActiveMQConnectionFactory.DEFAULT_BROKER_BIND_URL + "?transport.closeAsync=false";
   protected int topicCount;

   public void testPerformance() throws Exception {
      ConnectionFactory factory = createConnectionFactory();
      List<Connection> list = new ArrayList<>();
      for (int i = 0; i < CONNECTION_COUNT; i++) {
         Connection connection = factory.createConnection();
         connection.start();
         list.add(connection);
         LOG.info("Created " + i);
         if (i % 100 == 0) {
            closeConnections(list);
         }
      }
      closeConnections(list);
   }

   protected void closeConnections(List<Connection> list) throws JMSException {
      for (Connection c : list) {
         c.close();
      }
      for (TransportConnector tc : broker.getTransportConnectors()) {
         System.out.println(tc.getConnections().size());
      }
      list.clear();
   }

   @Override
   protected void setUp() throws Exception {
      if (broker == null) {
         broker = createBroker();
      }
      super.setUp();
   }

   @Override
   protected void tearDown() throws Exception {
      super.tearDown();
      if (broker != null) {
         broker.stop();
      }
   }

   protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
      ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory(ActiveMQConnection.DEFAULT_BROKER_URL);
      return cf;
   }

   protected BrokerService createBroker() throws Exception {
      BrokerService answer = new BrokerService();
      configureBroker(answer);
      answer.start();
      return answer;
   }

   protected void configureBroker(BrokerService answer) throws Exception {
      answer.setPersistent(false);
      answer.addConnector(bindAddress);
      answer.setDeleteAllMessagesOnStartup(true);
   }
}
