/**
 * 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 java.util.ArrayList;
import java.util.Collection;
import java.util.List;
import java.util.Properties;

import javax.jms.JMSException;
import javax.jms.Message;
import javax.jms.MessageListener;
import javax.jms.MessageProducer;
import javax.jms.Session;
import javax.jms.TopicSubscriber;

import org.apache.activemq.ActiveMQConnection;
import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.jmx.BrokerView;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.util.IntrospectionSupport;
import org.apache.activemq.util.Wait;
import org.junit.After;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

@RunWith(value = Parameterized.class)
public class AMQ2870Test extends org.apache.activemq.TestSupport {

   static final Logger LOG = LoggerFactory.getLogger(AMQ2870Test.class);
   BrokerService broker = null;
   ActiveMQTopic topic;

   ActiveMQConnection consumerConnection = null, producerConnection = null;
   Session producerSession;
   MessageProducer producer;
   final int minPercentUsageForStore = 10;
   String data;

   private final PersistenceAdapterChoice persistenceAdapterChoice;

   @Parameterized.Parameters
   public static Collection<PersistenceAdapterChoice[]> getTestParameters() {
      String osName = System.getProperty("os.name");
      LOG.info("Running on [" + osName + "]");
      PersistenceAdapterChoice[] kahaDb = {PersistenceAdapterChoice.KahaDB};
      PersistenceAdapterChoice[] levelDb = {PersistenceAdapterChoice.LevelDB};
      List<PersistenceAdapterChoice[]> choices = new ArrayList<PersistenceAdapterChoice[]>();
      choices.add(kahaDb);
      if (!osName.equalsIgnoreCase("AIX") && !osName.equalsIgnoreCase("SunOS")) {
         choices.add(levelDb);
      }

      return choices;
   }

   public AMQ2870Test(PersistenceAdapterChoice choice) {
      this.persistenceAdapterChoice = choice;
   }

   @Test(timeout = 300000)
   public void testSize() throws Exception {
      openConsumer();

      assertEquals(0, broker.getAdminView().getStorePercentUsage());

      for (int i = 0; i < 5000; i++) {
         sendMessage(false);
      }

      final BrokerView brokerView = broker.getAdminView();

      // wait for reclaim
      assertTrue("in range with consumer", Wait.waitFor(new Wait.Condition() {
                    @Override
                    public boolean isSatisified() throws Exception {
                       // usage percent updated only on send check for isFull so once
                       // sends complete it is no longer updated till next send via a call to isFull
                       // this is optimal as it is only used to block producers
                       broker.getSystemUsage().getStoreUsage().isFull();
                       LOG.info("store percent usage: " + brokerView.getStorePercentUsage());
                       return broker.getAdminView().getStorePercentUsage() < minPercentUsageForStore;
                    }
                 }));

      closeConsumer();

      assertTrue("in range with closed consumer", Wait.waitFor(new Wait.Condition() {
                    @Override
                    public boolean isSatisified() throws Exception {
                       broker.getSystemUsage().getStoreUsage().isFull();
                       LOG.info("store precent usage: " + brokerView.getStorePercentUsage());
                       return broker.getAdminView().getStorePercentUsage() < minPercentUsageForStore;
                    }
                 }));

      for (int i = 0; i < 5000; i++) {
         sendMessage(false);
      }

      // What if i drop the subscription?
      broker.getAdminView().destroyDurableSubscriber("cliID", "subName");

      assertTrue("in range after send with consumer", Wait.waitFor(new Wait.Condition() {
                    @Override
                    public boolean isSatisified() throws Exception {
                       broker.getSystemUsage().getStoreUsage().isFull();
                       LOG.info("store precent usage: " + brokerView.getStorePercentUsage());
                       return broker.getAdminView().getStorePercentUsage() < minPercentUsageForStore;
                    }
                 }));
   }

   private void openConsumer() throws Exception {
      consumerConnection = (ActiveMQConnection) createConnection();
      consumerConnection.setClientID("cliID");
      consumerConnection.start();
      Session session = consumerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
      TopicSubscriber subscriber = session.createDurableSubscriber(topic, "subName", "filter=true", false);

      subscriber.setMessageListener(new MessageListener() {
         @Override
         public void onMessage(Message message) {
            // received++;
         }
      });
   }

   private void closeConsumer() throws JMSException {
      if (consumerConnection != null)
         consumerConnection.close();
      consumerConnection = null;
   }

   private void sendMessage(boolean filter) throws Exception {
      if (producerConnection == null) {
         producerConnection = (ActiveMQConnection) createConnection();
         producerConnection.start();
         producerSession = producerConnection.createSession(false, Session.AUTO_ACKNOWLEDGE);
         producer = producerSession.createProducer(topic);
      }

      Message message = producerSession.createMessage();
      message.setBooleanProperty("filter", filter);
      message.setStringProperty("data", data);
      producer.send(message);
   }

   private void startBroker(boolean deleteMessages) throws Exception {
      broker = new BrokerService();
      broker.setAdvisorySupport(false);
      broker.setBrokerName("testStoreSize");

      if (deleteMessages) {
         broker.setDeleteAllMessagesOnStartup(true);
      }
      LOG.info("Starting broker with persistenceAdapterChoice " + persistenceAdapterChoice.toString());
      setPersistenceAdapter(broker, persistenceAdapterChoice);
      configurePersistenceAdapter(broker.getPersistenceAdapter());
      broker.getSystemUsage().getStoreUsage().setLimit(100 * 1000 * 1000);
      broker.start();
   }

   private void configurePersistenceAdapter(PersistenceAdapter persistenceAdapter) {
      Properties properties = new Properties();
      String maxFileLengthVal = String.valueOf(2 * 1024 * 1024);
      properties.put("journalMaxFileLength", maxFileLengthVal);
      properties.put("maxFileLength", maxFileLengthVal);
      properties.put("cleanupInterval", "2000");
      properties.put("checkpointInterval", "2000");

      // leveldb
      properties.put("logSize", maxFileLengthVal);

      IntrospectionSupport.setProperties(persistenceAdapter, properties);
   }

   private void stopBroker() throws Exception {
      if (broker != null)
         broker.stop();
      broker = null;
   }

   @Override
   protected ActiveMQConnectionFactory createConnectionFactory() throws Exception {
      return new ActiveMQConnectionFactory("vm://testStoreSize?jms.watchTopicAdvisories=false&waitForStart=5000&create=false");
   }

   @Override
   @Before
   public void setUp() throws Exception {
      StringBuilder sb = new StringBuilder(5000);
      for (int i = 0; i < 5000; i++) {
         sb.append('a');
      }
      data = sb.toString();

      startBroker(true);
      topic = (ActiveMQTopic) createDestination();
   }

   @Override
   @After
   public void tearDown() throws Exception {
      stopBroker();
   }
}
