/**
 * 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.broker.ft;

import javax.jms.Connection;
import javax.jms.Destination;
import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TransactionRolledBackException;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.List;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.command.ActiveMQMessage;
import org.apache.activemq.command.MessageId;
import org.apache.activemq.store.jdbc.JDBCPersistenceAdapter;
import org.apache.derby.jdbc.EmbeddedDataSource;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class DbRestartJDBCQueueMasterSlaveTest extends JDBCQueueMasterSlaveTest {

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

   @Override
   protected void messageSent() throws Exception {
      verifyExpectedBroker(inflightMessageCount);
      if (++inflightMessageCount == failureCount) {
         LOG.info("STOPPING DB!@!!!!");
         final EmbeddedDataSource ds = ((SyncCreateDataSource) getExistingDataSource()).getDelegate();
         ds.setShutdownDatabase("shutdown");
         LOG.info("DB STOPPED!@!!!!");

         Thread dbRestartThread = new Thread("db-re-start-thread") {
            @Override
            public void run() {
               delayTillRestartRequired();
               ds.setShutdownDatabase("false");
               LOG.info("DB RESTARTED!@!!!!");
            }
         };
         dbRestartThread.start();
      }
      verifyExpectedBroker(inflightMessageCount);
   }

   protected void verifyExpectedBroker(int inflightMessageCount) {
      if (inflightMessageCount == 0) {
         assertEquals("connected to master", master.getBrokerName(), ((ActiveMQConnection) sendConnection).getBrokerName());
      } else if (inflightMessageCount == failureCount + 10) {
         assertEquals("connected to slave, count:" + inflightMessageCount, slave.get().getBrokerName(), ((ActiveMQConnection) sendConnection).getBrokerName());
      }
   }

   protected void delayTillRestartRequired() {
      LOG.info("Waiting for master broker to Stop");
      master.waitUntilStopped();
   }

   @Override
   protected void sendToProducer(MessageProducer producer,
                                 Destination producerDestination,
                                 Message message) throws JMSException {
      producer.send(producerDestination, message);
   }

   @Override
   protected Session createReceiveSession(Connection receiveConnection) throws Exception {
      return receiveConnection.createSession(true, Session.SESSION_TRANSACTED);
   }

   @Override
   protected void consumeMessage(Message message, List<Message> messageList) {
      try {
         receiveSession.commit();
         super.consumeMessage(message, messageList);
      } catch (JMSException e) {
         LOG.info("Failed to commit message receipt: " + message, e);
         try {
            receiveSession.rollback();
         } catch (JMSException ignored) {
         }

         if (e instanceof TransactionRolledBackException) {
            TransactionRolledBackException transactionRolledBackException = (TransactionRolledBackException) e;
            if (transactionRolledBackException.getMessage().indexOf("in doubt") != -1) {
               // failover chucked bc there is a missing reply to a commit.
               // failover is involved b/c the store exception is handled broker side and the client just
               // sees a disconnect (socket.close()).
               // If the client needs to be aware of the failure then it should not use IOExceptionHandler
               // so that the exception will propagate back

               // for this test case:
               // the commit may have got there and the reply is lost "or" the commit may be lost.
               // so we may or may not get a resend.
               //
               // At the application level we need to determine if the message is there or not which is not trivial
               // for this test we assert received == sent
               // so we need to know whether the message will be replayed.
               // we can ask the store b/c we know it is jdbc - guess we could go through a destination
               // message store interface also or use jmx
               java.sql.Connection dbConnection = null;
               try {
                  ActiveMQMessage mqMessage = (ActiveMQMessage) message;
                  MessageId id = mqMessage.getMessageId();
                  dbConnection = sharedDs.getConnection();
                  PreparedStatement s = dbConnection.prepareStatement(((JDBCPersistenceAdapter) connectedToBroker().getPersistenceAdapter()).getStatements().getFindMessageStatement());
                  s.setString(1, id.getProducerId().toString());
                  s.setLong(2, id.getProducerSequenceId());
                  ResultSet rs = s.executeQuery();

                  if (!rs.next()) {
                     // message is gone, so lets count it as consumed
                     LOG.info("On TransactionRolledBackException we know that the ack/commit got there b/c message is gone so we count it: " + mqMessage);
                     super.consumeMessage(message, messageList);
                  } else {
                     LOG.info("On TransactionRolledBackException we know that the ack/commit was lost so we expect a replay of: " + mqMessage);
                  }
               } catch (Exception dbe) {
                  dbe.printStackTrace();
               } finally {
                  try {
                     dbConnection.close();
                  } catch (SQLException e1) {
                     e1.printStackTrace();
                  }
               }
            }
         }
      }
   }

   private BrokerService connectedToBroker() {
      return ((ActiveMQConnection) receiveConnection).getBrokerInfo().getBrokerName().equals("master") ? master : slave.get();
   }
}
