/**
 * 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.bugs;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;

import java.util.Enumeration;

import javax.jms.Connection;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Queue;
import javax.jms.QueueBrowser;
import javax.jms.Session;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.region.policy.PolicyEntry;
import org.apache.activemq.broker.region.policy.PolicyMap;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class AMQ4487Test {

   private static final Logger LOG = LoggerFactory.getLogger(AMQ4487Test.class);

   private final String destinationName = "TEST.QUEUE";
   private BrokerService broker;
   private ActiveMQConnectionFactory factory;

   @Before
   public void startBroker() throws Exception {
      broker = new BrokerService();
      broker.deleteAllMessages();
      broker.setUseJmx(false);
      broker.setAdvisorySupport(false);

      PolicyEntry policy = new PolicyEntry();
      policy.setQueue(">");
      policy.setMaxProducersToAudit(75);
      PolicyMap pMap = new PolicyMap();
      pMap.setDefaultEntry(policy);
      broker.setDestinationPolicy(pMap);

      broker.start();
      broker.waitUntilStarted();
      factory = new ActiveMQConnectionFactory("vm://localhost");
   }

   @After
   public void stopBroker() throws Exception {
      broker.stop();
      broker.waitUntilStopped();
   }

   private void sendMessages(int messageToSend) throws Exception {
      String data = "";
      for (int i = 0; i < 1024 * 2; i++) {
         data += "x";
      }

      Connection connection = factory.createConnection();
      connection.start();

      for (int i = 0; i < messageToSend; i++) {
         Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
         Queue queue = session.createQueue(destinationName);
         MessageProducer producer = session.createProducer(queue);
         producer.send(session.createTextMessage(data));
         session.close();
      }

      connection.close();
   }

   @Test
   public void testBrowsingWithLessThanMaxAuditDepth() throws Exception {
      doTestBrowsing(75);
   }

   @Test
   public void testBrowsingWithMoreThanMaxAuditDepth() throws Exception {
      doTestBrowsing(300);
   }

   @SuppressWarnings("rawtypes")
   private void doTestBrowsing(int messagesToSend) throws Exception {

      Connection connection = factory.createConnection();
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      Queue queue = session.createQueue(destinationName);

      sendMessages(messagesToSend);

      QueueBrowser browser = session.createBrowser(queue);
      Enumeration enumeration = browser.getEnumeration();
      int received = 0;
      while (enumeration.hasMoreElements()) {
         Message m = (Message) enumeration.nextElement();
         assertNotNull(m);

         if (LOG.isDebugEnabled()) {
            LOG.debug("Browsed Message: {}", m.getJMSMessageID());
         }

         received++;
         if (received > messagesToSend) {
            break;
         }
      }

      browser.close();

      assertEquals(messagesToSend, received);
   }
}