content: /**
   * 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.store.kahadb;
  
  import static org.junit.Assert.assertEquals;
  import static org.junit.Assert.assertFalse;
  import static org.junit.Assert.assertNull;
  import static org.junit.Assert.assertTrue;
  
  import java.io.File;
  import java.lang.reflect.Field;
  import java.util.concurrent.TimeUnit;
  
  import org.apache.activemq.broker.ConnectionContext;
  import org.apache.activemq.command.ActiveMQQueue;
  import org.apache.activemq.command.ActiveMQTextMessage;
  import org.apache.activemq.command.MessageId;
  import org.apache.activemq.store.MessageStore;
  import org.apache.activemq.store.kahadb.disk.journal.FileAppender;
  import org.apache.activemq.store.kahadb.disk.journal.Journal;
  import org.apache.activemq.store.kahadb.disk.journal.Journal.JournalDiskSyncStrategy;
  import org.apache.activemq.store.kahadb.disk.journal.Location;
  import org.junit.After;
  import org.junit.Rule;
  import org.junit.Test;
  import org.junit.rules.TemporaryFolder;
  import org.junit.rules.Timeout;
  
  public class JournalSyncStrategyTest  {
  
      @Rule
      public TemporaryFolder dataFileDir = new TemporaryFolder(new File("target"));
  
      @Rule
      public Timeout globalTimeout= new Timeout(10, TimeUnit.SECONDS);
  
      private KahaDBStore store;
      private int defaultJournalLength = 10 * 1024;
  
      @After
      public void after() throws Exception {
          if (store != null) {
              store.stop();
          }
      }
  
      @Test
      public void testPeriodicSync()throws Exception {
          store = configureStore(JournalDiskSyncStrategy.PERIODIC);
          store.setJournalDiskSyncInterval(800);
          store.start();
          final Journal journal = store.getJournal();
          assertTrue(journal.isJournalDiskSyncPeriodic());
          assertFalse(store.isEnableJournalDiskSyncs());
          assertEquals(store.getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.PERIODIC.name());
          assertEquals(store.getJournalDiskSyncStrategyEnum(), JournalDiskSyncStrategy.PERIODIC);
          assertEquals(store.getJournal().getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.PERIODIC);
          assertEquals(store.getJournalDiskSyncInterval(), 800);
  
          Location l = store.lastAsyncJournalUpdate.get();
  
          //write a message to the store
          MessageStore messageStore = store.createQueueMessageStore(new ActiveMQQueue("test"));
          writeMessage(messageStore, 1);
  
          //make sure message write causes the lastAsyncJournalUpdate to be set with a new value
          assertFalse(store.lastAsyncJournalUpdate.get().equals(l));
      }
  
      @Test
      public void testAlwaysSync()throws Exception {
          store = configureStore(JournalDiskSyncStrategy.ALWAYS);
          store.start();
          assertFalse(store.getJournal().isJournalDiskSyncPeriodic());
          assertTrue(store.isEnableJournalDiskSyncs());
          assertEquals(store.getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.ALWAYS.name());
          assertEquals(store.getJournalDiskSyncStrategyEnum(), JournalDiskSyncStrategy.ALWAYS);
          assertEquals(store.getJournal().getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.ALWAYS);
  
          MessageStore messageStore = store.createQueueMessageStore(new ActiveMQQueue("test"));
          writeMessage(messageStore, 1);
          assertNull(store.lastAsyncJournalUpdate.get());
      }
  
      @Test
      public void testNeverSync() throws Exception {
          store = configureStore(JournalDiskSyncStrategy.NEVER);
          store.start();
          assertFalse(store.getJournal().isJournalDiskSyncPeriodic());
          assertFalse(store.isEnableJournalDiskSyncs());
          assertEquals(store.getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.NEVER.name());
          assertEquals(store.getJournalDiskSyncStrategyEnum(), JournalDiskSyncStrategy.NEVER);
          assertEquals(store.getJournal().getJournalDiskSyncStrategy(), JournalDiskSyncStrategy.NEVER);
  
          MessageStore messageStore = store.createQueueMessageStore(new ActiveMQQueue("test"));
          writeMessage(messageStore, 1);
          assertNull(store.lastAsyncJournalUpdate.get());
      }
  
      private KahaDBStore configureStore(JournalDiskSyncStrategy strategy) throws Exception {
          KahaDBStore store = new KahaDBStore();
          store.setJournalMaxFileLength(defaultJournalLength);
          store.deleteAllMessages();
          store.setDirectory(dataFileDir.getRoot());
          if (strategy != null) {
              store.setJournalDiskSyncStrategy(strategy.name());
          }
  
          return store;
      }
  
      private void writeMessage(final MessageStore messageStore, int num) throws Exception {
          ActiveMQTextMessage message = new ActiveMQTextMessage();
          message.setText("testtesttest");
          MessageId messageId = new MessageId("ID:localhost-56913-1254499826208-0:0:1:1:" + num);
          messageId.setBrokerSequenceId(num);
          message.setMessageId(messageId);
          messageStore.addMessage(new ConnectionContext(), message);
      }
  
  
  }
  