/**
 * 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.failover;

import java.io.File;
import java.io.FileOutputStream;
import java.util.concurrent.TimeUnit;

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

import junit.framework.TestCase;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.network.NetworkConnector;
import org.apache.log4j.Logger;

public class FailoverUpdateURIsTest extends TestCase {

   private static final String QUEUE_NAME = "test.failoverupdateuris";
   private static final Logger LOG = Logger.getLogger(FailoverUpdateURIsTest.class);

   String firstTcpUri = "tcp://localhost:61616";
   String secondTcpUri = "tcp://localhost:61626";
   Connection connection = null;
   BrokerService bs1 = null;
   BrokerService bs2 = null;

   @Override
   public void tearDown() throws Exception {
      if (connection != null) {
         connection.close();
      }
      if (bs1 != null) {
         bs1.stop();
      }
      if (bs2 != null) {
         bs2.stop();
      }
   }

   public void testUpdateURIsViaFile() throws Exception {

      String targetDir = "target/" + getName();
      new File(targetDir).mkdir();
      File updateFile = new File(targetDir + "/updateURIsFile.txt");
      LOG.info(updateFile);
      LOG.info(updateFile.toURI());
      LOG.info(updateFile.getAbsoluteFile());
      LOG.info(updateFile.getAbsoluteFile().toURI());
      FileOutputStream out = new FileOutputStream(updateFile);
      out.write(firstTcpUri.getBytes());
      out.close();

      bs1 = createBroker("bs1", firstTcpUri);
      bs1.start();

      // no failover uri's to start with, must be read from file...
      ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("failover:()?updateURIsURL=file:///" + updateFile.getAbsoluteFile());
      connection = cf.createConnection();
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      Queue theQueue = session.createQueue(QUEUE_NAME);
      MessageProducer producer = session.createProducer(theQueue);
      MessageConsumer consumer = session.createConsumer(theQueue);
      Message message = session.createTextMessage("Test message");
      producer.send(message);
      Message msg = consumer.receive(2000);
      assertNotNull(msg);

      bs1.stop();
      bs1.waitUntilStopped();
      bs1 = null;

      bs2 = createBroker("bs2", secondTcpUri);
      bs2.start();

      // add the transport uri for broker number 2
      out = new FileOutputStream(updateFile, true);
      out.write(",".getBytes());
      out.write(secondTcpUri.toString().getBytes());
      out.close();

      producer.send(message);
      msg = consumer.receive(2000);
      assertNotNull(msg);
   }

   private BrokerService createBroker(String name, String tcpUri) throws Exception {
      BrokerService bs = new BrokerService();
      bs.setBrokerName(name);
      bs.setUseJmx(false);
      bs.setPersistent(false);
      bs.addConnector(tcpUri);
      return bs;
   }

   public void testAutoUpdateURIs() throws Exception {

      bs1 = new BrokerService();
      bs1.setUseJmx(false);
      TransportConnector transportConnector = bs1.addConnector(firstTcpUri);
      transportConnector.setUpdateClusterClients(true);
      bs1.start();

      ActiveMQConnectionFactory cf = new ActiveMQConnectionFactory("failover:(" + firstTcpUri + ")");
      connection = cf.createConnection();
      connection.start();
      Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      Queue theQueue = session.createQueue(QUEUE_NAME);
      MessageProducer producer = session.createProducer(theQueue);
      MessageConsumer consumer = session.createConsumer(theQueue);
      Message message = session.createTextMessage("Test message");
      producer.send(message);
      Message msg = consumer.receive(4000);
      assertNotNull(msg);

      bs2 = createBroker("bs2", secondTcpUri);
      NetworkConnector networkConnector = bs2.addNetworkConnector("static:(" + firstTcpUri + ")");
      networkConnector.setDuplex(true);
      bs2.start();
      LOG.info("started brokerService 2");
      bs2.waitUntilStarted();

      TimeUnit.SECONDS.sleep(4);

      LOG.info("stopping brokerService 1");
      bs1.stop();
      bs1.waitUntilStopped();
      bs1 = null;

      producer.send(message);
      msg = consumer.receive(4000);
      assertNotNull(msg);
   }
}
