/**
 * 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.config;

import javax.jms.JMSException;
import javax.jms.MessageConsumer;
import javax.jms.Session;
import javax.jms.Topic;
import javax.sql.DataSource;
import java.io.File;
import java.sql.Connection;
import java.sql.DatabaseMetaData;
import java.sql.ResultSet;
import java.util.List;

import org.apache.activemq.ActiveMQConnectionFactory;
import org.apache.activemq.broker.BrokerService;
import org.apache.activemq.broker.TransportConnector;
import org.apache.activemq.broker.region.policy.FixedSizedSubscriptionRecoveryPolicy;
import org.apache.activemq.broker.region.policy.LastImageSubscriptionRecoveryPolicy;
import org.apache.activemq.broker.region.policy.NoSubscriptionRecoveryPolicy;
import org.apache.activemq.broker.region.policy.RoundRobinDispatchPolicy;
import org.apache.activemq.broker.region.policy.SimpleDispatchPolicy;
import org.apache.activemq.broker.region.policy.StrictOrderDispatchPolicy;
import org.apache.activemq.broker.region.policy.SubscriptionRecoveryPolicy;
import org.apache.activemq.broker.region.policy.TimedSubscriptionRecoveryPolicy;
import org.apache.activemq.command.ActiveMQTopic;
import org.apache.activemq.network.NetworkConnector;
import org.apache.activemq.store.PersistenceAdapter;
import org.apache.activemq.store.jdbc.DefaultDatabaseLocker;
import org.apache.activemq.store.jdbc.JDBCPersistenceAdapter;
import org.apache.activemq.store.jdbc.adapter.TransactDatabaseLocker;
import org.apache.activemq.store.journal.JournalPersistenceAdapter;
import org.apache.activemq.store.memory.MemoryPersistenceAdapter;
import org.apache.activemq.transport.tcp.TcpTransportServer;
import org.apache.activemq.usage.SystemUsage;
import org.apache.activemq.xbean.BrokerFactoryBean;
import org.jmock.Expectations;
import org.jmock.Mockery;
import org.junit.Test;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.core.io.ClassPathResource;
import org.springframework.core.io.FileSystemResource;
import org.springframework.core.io.Resource;

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

public class ConfigTest {

   protected static final String JOURNAL_ROOT = "target/test-data/";
   protected static final String DERBY_ROOT = "target/test-data/";
   protected static final String CONF_ROOT = "src/test/resources/org/apache/activemq/config/sample-conf/";
   private static final Logger LOG = LoggerFactory.getLogger(ConfigTest.class);

   static {
      System.setProperty("javax.net.ssl.trustStore", "src/test/resources/client.keystore");
      System.setProperty("javax.net.ssl.trustStorePassword", "password");
      System.setProperty("javax.net.ssl.trustStoreType", "jks");
      System.setProperty("javax.net.ssl.keyStore", "src/test/resources/server.keystore");
      System.setProperty("javax.net.ssl.keyStorePassword", "password");
      System.setProperty("javax.net.ssl.keyStoreType", "jks");
   }

    /*
     * IMPORTANT NOTE: Assertions checking for the existence of the derby
     * directory will fail if the first derby directory is not created under
     * target/test-data/. The test in unable to change the derby root directory
     * for succeeding creation. It uses the first created directory as the root.
     */

   /*
    * This tests creating a journal persistence adapter using the persistence
    * adapter factory bean
    */
   @Test
   public void testJournaledJDBCConfig() throws Exception {

      File journalFile = new File(JOURNAL_ROOT + "testJournaledJDBCConfig/journal");
      recursiveDelete(journalFile);

      File derbyFile = new File(DERBY_ROOT + "testJournaledJDBCConfig/derbydb"); // Default
      recursiveDelete(derbyFile);

      BrokerService broker;
      broker = createBroker(new FileSystemResource(CONF_ROOT + "journaledjdbc-example.xml"));
      try {
         assertEquals("Broker Config Error (brokerName)", "brokerJournaledJDBCConfigTest", broker.getBrokerName());

         PersistenceAdapter adapter = broker.getPersistenceAdapter();

         assertTrue("Should have created a journal persistence adapter", adapter instanceof JournalPersistenceAdapter);
         assertTrue("Should have created a derby directory at " + derbyFile.getAbsolutePath(), derbyFile.exists());
         assertTrue("Should have created a journal directory at " + journalFile.getAbsolutePath(), journalFile.exists());

         // Check persistence factory configurations
         broker.getPersistenceAdapter();

         assertTrue(broker.getSystemUsage().getStoreUsage().getStore() instanceof JournalPersistenceAdapter);

         LOG.info("Success");
      } finally {
         if (broker != null) {
            broker.stop();
         }
      }
   }

   @Test
   public void testJdbcLockConfigOverride() throws Exception {

      JDBCPersistenceAdapter adapter = new JDBCPersistenceAdapter();
      Mockery context = new Mockery();
      final DataSource dataSource = context.mock(DataSource.class);
      final Connection connection = context.mock(Connection.class);
      final DatabaseMetaData metadata = context.mock(DatabaseMetaData.class);
      final ResultSet result = context.mock(ResultSet.class);
      adapter.setDataSource(dataSource);
      adapter.setCreateTablesOnStartup(false);

      context.checking(new Expectations() {{
         allowing(dataSource).getConnection();
         will(returnValue(connection));
         allowing(connection).getMetaData();
         will(returnValue(metadata));
         allowing(connection);
         allowing(metadata).getDriverName();
         will(returnValue("Microsoft_SQL_Server_2005_jdbc_driver"));
         allowing(result).next();
         will(returnValue(true));
      }});

      adapter.start();
      assertTrue("has the locker override", adapter.getLocker() instanceof TransactDatabaseLocker);
      adapter.stop();
   }

   public void testJdbcLockConfigDefault() throws Exception {

      JDBCPersistenceAdapter adapter = new JDBCPersistenceAdapter();
      Mockery context = new Mockery();
      final DataSource dataSource = context.mock(DataSource.class);
      final Connection connection = context.mock(Connection.class);
      final DatabaseMetaData metadata = context.mock(DatabaseMetaData.class);
      final ResultSet result = context.mock(ResultSet.class);
      adapter.setDataSource(dataSource);
      adapter.setCreateTablesOnStartup(false);

      context.checking(new Expectations() {{
         allowing(dataSource).getConnection();
         will(returnValue(connection));
         allowing(connection).getMetaData();
         will(returnValue(metadata));
         allowing(connection);
         allowing(metadata).getDriverName();
         will(returnValue("Some_Unknown_driver"));
         allowing(result).next();
         will(returnValue(true));
      }});

      adapter.start();
      assertEquals("has the default locker", adapter.getLocker().getClass(), DefaultDatabaseLocker.class);
      adapter.stop();
   }

   /*
    * This tests configuring the different broker properties using
    * xbeans-spring
    */
   @Test
   public void testBrokerConfig() throws Exception {
      ActiveMQTopic dest;
      BrokerService broker;

      File journalFile = new File(JOURNAL_ROOT);
      recursiveDelete(journalFile);

      // Create broker from resource
      // System.out.print("Creating broker... ");
      broker = createBroker("org/apache/activemq/config/example.xml");
      LOG.info("Success");

      try {
         // Check broker configuration
         // System.out.print("Checking broker configurations... ");
         assertEquals("Broker Config Error (brokerName)", "brokerConfigTest", broker.getBrokerName());
         assertEquals("Broker Config Error (populateJMSXUserID)", false, broker.isPopulateJMSXUserID());
         assertEquals("Broker Config Error (useLoggingForShutdownErrors)", true, broker.isUseLoggingForShutdownErrors());
         assertEquals("Broker Config Error (useJmx)", true, broker.isUseJmx());
         assertEquals("Broker Config Error (persistent)", false, broker.isPersistent());
         assertEquals("Broker Config Error (useShutdownHook)", false, broker.isUseShutdownHook());
         assertEquals("Broker Config Error (deleteAllMessagesOnStartup)", true, broker.isDeleteAllMessagesOnStartup());
         LOG.info("Success");

         // Check specific vm transport
         // System.out.print("Checking vm connector... ");
         assertEquals("Should have a specific VM Connector", "vm://javacoola", broker.getVmConnectorURI().toString());
         LOG.info("Success");

         // Check transport connectors list
         // System.out.print("Checking transport connectors... ");
         List<TransportConnector> connectors = broker.getTransportConnectors();
         assertTrue("Should have created at least 3 connectors", connectors.size() >= 3);
         assertTrue("1st connector should be TcpTransportServer", connectors.get(0).getServer() instanceof TcpTransportServer);
         assertTrue("2nd connector should be TcpTransportServer", connectors.get(1).getServer() instanceof TcpTransportServer);
         assertTrue("3rd connector should be TcpTransportServer", connectors.get(2).getServer() instanceof TcpTransportServer);

         // Check network connectors
         // System.out.print("Checking network connectors... ");
         List<NetworkConnector> networkConnectors = broker.getNetworkConnectors();
         assertEquals("Should have a single network connector", 1, networkConnectors.size());
         LOG.info("Success");

         // Check dispatch policy configuration
         // System.out.print("Checking dispatch policies... ");

         dest = new ActiveMQTopic("Topic.SimpleDispatch");
         assertTrue("Should have a simple dispatch policy for " + dest.getTopicName(), broker.getDestinationPolicy().getEntryFor(dest).getDispatchPolicy() instanceof SimpleDispatchPolicy);

         dest = new ActiveMQTopic("Topic.RoundRobinDispatch");
         assertTrue("Should have a round robin dispatch policy for " + dest.getTopicName(), broker.getDestinationPolicy().getEntryFor(dest).getDispatchPolicy() instanceof RoundRobinDispatchPolicy);

         dest = new ActiveMQTopic("Topic.StrictOrderDispatch");
         assertTrue("Should have a strict order dispatch policy for " + dest.getTopicName(), broker.getDestinationPolicy().getEntryFor(dest).getDispatchPolicy() instanceof StrictOrderDispatchPolicy);
         LOG.info("Success");

         // Check subscription policy configuration
         // System.out.print("Checking subscription recovery policies... ");
         SubscriptionRecoveryPolicy subsPolicy;

         dest = new ActiveMQTopic("Topic.FixedSizedSubs");
         subsPolicy = broker.getDestinationPolicy().getEntryFor(dest).getSubscriptionRecoveryPolicy();
         assertTrue("Should have a fixed sized subscription recovery policy for " + dest.getTopicName(), subsPolicy instanceof FixedSizedSubscriptionRecoveryPolicy);
         assertEquals("FixedSizedSubsPolicy Config Error (maximumSize)", 2000000, ((FixedSizedSubscriptionRecoveryPolicy) subsPolicy).getMaximumSize());
         assertEquals("FixedSizedSubsPolicy Config Error (useSharedBuffer)", false, ((FixedSizedSubscriptionRecoveryPolicy) subsPolicy).isUseSharedBuffer());

         dest = new ActiveMQTopic("Topic.LastImageSubs");
         subsPolicy = broker.getDestinationPolicy().getEntryFor(dest).getSubscriptionRecoveryPolicy();
         assertTrue("Should have a last image subscription recovery policy for " + dest.getTopicName(), subsPolicy instanceof LastImageSubscriptionRecoveryPolicy);

         dest = new ActiveMQTopic("Topic.NoSubs");
         subsPolicy = broker.getDestinationPolicy().getEntryFor(dest).getSubscriptionRecoveryPolicy();
         assertTrue("Should have no subscription recovery policy for " + dest.getTopicName(), subsPolicy instanceof NoSubscriptionRecoveryPolicy);

         dest = new ActiveMQTopic("Topic.TimedSubs");
         subsPolicy = broker.getDestinationPolicy().getEntryFor(dest).getSubscriptionRecoveryPolicy();
         assertTrue("Should have a timed subscription recovery policy for " + dest.getTopicName(), subsPolicy instanceof TimedSubscriptionRecoveryPolicy);
         assertEquals("TimedSubsPolicy Config Error (recoverDuration)", 25000, ((TimedSubscriptionRecoveryPolicy) subsPolicy).getRecoverDuration());
         LOG.info("Success");

         // Check usage manager
         // System.out.print("Checking memory manager configurations... ");
         SystemUsage systemUsage = broker.getSystemUsage();
         assertTrue("Should have a SystemUsage", systemUsage != null);
         assertEquals("SystemUsage Config Error (MemoryUsage.limit)", 1024 * 1024 * 10, systemUsage.getMemoryUsage().getLimit());
         assertEquals("SystemUsage Config Error (MemoryUsage.percentUsageMinDelta)", 20, systemUsage.getMemoryUsage().getPercentUsageMinDelta());
         assertEquals("SystemUsage Config Error (TempUsage.limit)", 1024 * 1024 * 100, systemUsage.getTempUsage().getLimit());
         assertEquals("SystemUsage Config Error (StoreUsage.limit)", 1024 * 1024 * 1024, systemUsage.getStoreUsage().getLimit());
         assertEquals("SystemUsage Config Error (StoreUsage.name)", "foo", systemUsage.getStoreUsage().getName());

         assertNotNull(systemUsage.getStoreUsage().getStore());
         assertTrue(systemUsage.getStoreUsage().getStore() instanceof MemoryPersistenceAdapter);

         LOG.info("Success");

      } finally {
         if (broker != null) {
            broker.stop();
         }
      }
   }

   /*
    * This tests creating a journal persistence adapter using xbeans-spring
    */
   @Test
   public void testJournalConfig() throws Exception {
      File journalFile = new File(JOURNAL_ROOT + "testJournalConfig/journal");
      recursiveDelete(journalFile);

      BrokerService broker;
      broker = createBroker(new FileSystemResource(CONF_ROOT + "journal-example.xml"));
      try {
         assertEquals("Broker Config Error (brokerName)", "brokerJournalConfigTest", broker.getBrokerName());

         PersistenceAdapter adapter = broker.getPersistenceAdapter();

         assertTrue("Should have created a journal persistence adapter", adapter instanceof JournalPersistenceAdapter);
         assertTrue("Should have created a journal directory at " + journalFile.getAbsolutePath(), journalFile.exists());

         LOG.info("Success");
      } finally {
         if (broker != null) {
            broker.stop();
         }
      }
   }

   /*
    * This tests creating a memory persistence adapter using xbeans-spring
    */
   @Test
   public void testMemoryConfig() throws Exception {
      File journalFile = new File(JOURNAL_ROOT + "testMemoryConfig");
      recursiveDelete(journalFile);

      File derbyFile = new File(DERBY_ROOT + "testMemoryConfig");
      recursiveDelete(derbyFile);

      BrokerService broker;
      broker = createBroker(new FileSystemResource(CONF_ROOT + "memory-example.xml"));

      try {
         assertEquals("Broker Config Error (brokerName)", "brokerMemoryConfigTest", broker.getBrokerName());

         PersistenceAdapter adapter = broker.getPersistenceAdapter();

         assertTrue("Should have created a memory persistence adapter", adapter instanceof MemoryPersistenceAdapter);
         assertTrue("Should have not created a derby directory at " + derbyFile.getAbsolutePath(), !derbyFile.exists());
         assertTrue("Should have not created a journal directory at " + journalFile.getAbsolutePath(), !journalFile.exists());

         LOG.info("Success");
      } finally {
         if (broker != null) {
            broker.stop();
         }
      }
   }

   @Test
   public void testConnectorConfig() throws Exception {

      File journalFile = new File(JOURNAL_ROOT + "testMemoryConfig");
      recursiveDelete(journalFile);

      File derbyFile = new File(DERBY_ROOT + "testMemoryConfig");
      recursiveDelete(derbyFile);

      final int MAX_PRODUCERS = 5;
      final int MAX_CONSUMERS = 10;

      BrokerService broker = createBroker(new FileSystemResource(CONF_ROOT + "connector-properties.xml"));
      broker.start();
      try {

         assertEquals(broker.getTransportConnectorByScheme("tcp").getMaximumProducersAllowedPerConnection(), MAX_PRODUCERS);
         assertEquals(broker.getTransportConnectorByScheme("tcp").getMaximumConsumersAllowedPerConnection(), MAX_CONSUMERS);

         ActiveMQConnectionFactory activeMQConnectionFactory = new ActiveMQConnectionFactory("tcp://localhost:61631");
         javax.jms.Connection connection = activeMQConnectionFactory.createConnection();
         connection.start();
         Session session = connection.createSession(false, Session.AUTO_ACKNOWLEDGE);
         Topic topic = session.createTopic("test.foo");

         for (int i = 0; i < MAX_PRODUCERS; i++) {
            session.createProducer(topic);
         }

         try {
            session.createProducer(topic);
            fail("Should have got an exception on exceeding MAX_PRODUCERS");
         } catch (JMSException expected) {
         }

         try {
            for (int i = 0; i < (MAX_CONSUMERS + 1); i++) {
               MessageConsumer consumer = session.createConsumer(topic);
               assertNotNull(consumer);
            }
            fail("Should have caught an exception");
         } catch (JMSException e) {
         }

         LOG.info("Success");
      } finally {
         broker.stop();
      }
   }

   @Test
   public void testXmlConfigHelper() throws Exception {
      BrokerService broker;

      broker = createBroker(new FileSystemResource(CONF_ROOT + "memory-example.xml"));
      try {
         assertEquals("Broker Config Error (brokerName)", "brokerMemoryConfigTest", broker.getBrokerName());
      } finally {
         if (broker != null) {
            broker.stop();
         }
      }

      broker = createBroker("org/apache/activemq/config/config.xml");
      try {
         assertEquals("Broker Config Error (brokerName)", "brokerXmlConfigHelper", broker.getBrokerName());
      } finally {
         if (broker != null) {
            broker.stop();
         }
      }
   }

    /*
     * TODO: Create additional tests for forwarding bridges
     */

   protected static void recursiveDelete(File file) {
      if (file.isDirectory()) {
         File[] files = file.listFiles();
         for (int i = 0; i < files.length; i++) {
            recursiveDelete(files[i]);
         }
      }
      file.delete();
   }

   protected BrokerService createBroker(String resource) throws Exception {
      return createBroker(new ClassPathResource(resource));
   }

   protected BrokerService createBroker(Resource resource) throws Exception {
      BrokerFactoryBean factory = new BrokerFactoryBean(resource);
      factory.afterPropertiesSet();

      BrokerService broker = factory.getBroker();

      assertTrue("Should have a broker!", broker != null);

      // Broker is already started by default when using the XML file
      // broker.start();

      return broker;
   }
}
