/**
 * 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.peer;

import javax.jms.Connection;
import javax.jms.DeliveryMode;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TextMessage;

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.advisory.AdvisorySupport;
import org.apache.activemq.command.ActiveMQDestination;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.ActiveMQQueue;
import org.apache.activemq.command.ActiveMQTextMessage;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.command.ConsumerInfo;
import org.apache.activemq.util.MessageIdList;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
 *
 */
public class PeerTransportTest extends TestCase {

   protected static final int MESSAGE_COUNT = 50;
   protected static final int NUMBER_IN_CLUSTER = 3;
   private static final Logger LOG = LoggerFactory.getLogger(PeerTransportTest.class);

   protected ActiveMQDestination destination;
   protected boolean topic = true;
   protected int deliveryMode = DeliveryMode.NON_PERSISTENT;
   protected MessageProducer[] producers;
   protected Connection[] connections;
   protected MessageIdList messageIdList[];

   @Override
   protected void setUp() throws Exception {

      connections = new Connection[NUMBER_IN_CLUSTER];
      producers = new MessageProducer[NUMBER_IN_CLUSTER];
      messageIdList = new MessageIdList[NUMBER_IN_CLUSTER];
      ActiveMQDestination destination = createDestination();

      for (int i = 0; i < NUMBER_IN_CLUSTER; i++) {
         connections[i] = createConnection(i);
         connections[i].setClientID("ClusterTest" + i);
         connections[i].start();

         Session session = connections[i].createSession(false, Session.AUTO_ACKNOWLEDGE);
         producers[i] = session.createProducer(destination);
         producers[i].setDeliveryMode(deliveryMode);
         MessageConsumer consumer = createMessageConsumer(session, destination);
         messageIdList[i] = new MessageIdList();
         consumer.setMessageListener(messageIdList[i]);
      }

      LOG.info("Waiting for cluster to be fully connected");

      // Each connection should see that NUMBER_IN_CLUSTER consumers get
      // registered on the destination.
      ActiveMQDestination advisoryDest = AdvisorySupport.getConsumerAdvisoryTopic(destination);
      for (int i = 0; i < NUMBER_IN_CLUSTER; i++) {
         Session session = connections[i].createSession(false, Session.AUTO_ACKNOWLEDGE);
         MessageConsumer consumer = createMessageConsumer(session, advisoryDest);

         int j = 0;
         while (j < NUMBER_IN_CLUSTER) {
            ActiveMQMessage message = (ActiveMQMessage) consumer.receive(1000);
            if (message == null) {
               fail("Connection " + i + " saw " + j + " consumers, expected: " + NUMBER_IN_CLUSTER);
            }
            if (message.getDataStructure() != null && message.getDataStructure().getDataStructureType() == ConsumerInfo.DATA_STRUCTURE_TYPE) {
               j++;
            }
         }

         session.close();
      }

      LOG.info("Cluster is online.");
   }

   @Override
   protected void tearDown() throws Exception {
      if (connections != null) {
         for (int i = 0; i < connections.length; i++) {
            connections[i].close();
         }
      }
   }

   protected MessageConsumer createMessageConsumer(Session session, Destination destination) throws JMSException {
      return session.createConsumer(destination);
   }

   protected Connection createConnection(int i) throws JMSException {
      LOG.info("creating connection ....");
      ActiveMQConnectionFactory fac = new ActiveMQConnectionFactory("peer://" + getClass().getName() + "/node" + i);
      return fac.createConnection();
   }

   protected ActiveMQDestination createDestination() {
      return createDestination(getClass().getName());
   }

   protected ActiveMQDestination createDestination(String name) {
      if (topic) {
         return new ActiveMQTopic(name);
      }
      else {
         return new ActiveMQQueue(name);
      }
   }

   /**
    * @throws Exception
    */
   public void testSendReceive() throws Exception {
      for (int i = 0; i < MESSAGE_COUNT; i++) {
         for (int x = 0; x < producers.length; x++) {
            TextMessage textMessage = new ActiveMQTextMessage();
            textMessage.setText("MSG-NO: " + i + " in cluster: " + x);
            producers[x].send(textMessage);
         }
      }

      for (int i = 0; i < NUMBER_IN_CLUSTER; i++) {
         messageIdList[i].assertMessagesReceived(expectedReceiveCount());
      }
   }

   protected int expectedReceiveCount() {
      return MESSAGE_COUNT * NUMBER_IN_CLUSTER;
   }

}
