/**
 *
 * 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.hadoop.hbase.mob;
import java.io.IOException;

import org.apache.hadoop.hbase.HBaseClassTestRule;
import org.apache.hadoop.hbase.client.ColumnFamilyDescriptor;
import org.apache.hadoop.hbase.client.TableDescriptor;
import org.apache.hadoop.hbase.testclassification.LargeTests;
import org.junit.Before;
import org.junit.BeforeClass;
import org.junit.ClassRule;
import org.junit.experimental.categories.Category;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

/**
  * Mob file compaction chore in a regular batch mode test.
  * 1. Enables batch mode for regular MOB compaction,
  *    Sets batch size to 7 regions.
  * 2. Disables periodic MOB compactions, sets minimum age to archive to 10 sec
  * 3. Creates MOB table with 20 regions
  * 4. Loads MOB data (randomized keys, 1000 rows), flushes data.
  * 5. Repeats 4. two more times
  * 6. Verifies that we have 20 *3 = 60 mob files (equals to number of regions x 3)
  * 7. Runs major MOB compaction.
  * 8. Verifies that number of MOB files in a mob directory is 20 x4 = 80
  * 9. Waits for a period of time larger than minimum age to archive
  * 10. Runs Mob cleaner chore
  * 11 Verifies that number of MOB files in a mob directory is 20.
  * 12 Runs scanner and checks all 3 * 1000 rows.
 */
@Category(LargeTests.class)
public class TestMobCompactionRegularRegionBatchMode extends TestMobCompactionWithDefaults {
  private static final Logger LOG =
      LoggerFactory.getLogger(TestMobCompactionRegularRegionBatchMode.class);
  @ClassRule
  public static final HBaseClassTestRule CLASS_RULE =
      HBaseClassTestRule.forClass(TestMobCompactionRegularRegionBatchMode.class);

  private static final int batchSize = 7;
  private MobFileCompactionChore compactionChore;

  @Before
  public void setUp() throws Exception {
    super.setUp();
    compactionChore = new MobFileCompactionChore(conf, batchSize);
  }

  @BeforeClass
  public static void configureCompactionBatches() throws InterruptedException, IOException {
    HTU.shutdownMiniHBaseCluster();
    conf.setInt(MobConstants.MOB_MAJOR_COMPACTION_REGION_BATCH_SIZE, batchSize);
    HTU.startMiniHBaseCluster();
  }

  @Override
  protected void mobCompactImpl(TableDescriptor tableDescriptor,
      ColumnFamilyDescriptor familyDescriptor) throws IOException, InterruptedException {
    LOG.debug("compacting {} in batch mode.", tableDescriptor.getTableName());
    compactionChore.performMajorCompactionInBatches(admin, tableDescriptor, familyDescriptor);
  }

  @Override
  protected String description() {
    return "regular batch mode";
  }

}