/**
    * 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.coprocessor.example;
  
  import java.io.IOException;
  import org.apache.hadoop.conf.Configuration;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.hbase.HBaseTestingUtility;
  import org.apache.hadoop.hbase.HColumnDescriptor;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.HTableDescriptor;
  import org.apache.hadoop.hbase.MiniHBaseCluster;
  import org.apache.hadoop.hbase.TableName;
  import org.apache.hadoop.hbase.client.Admin;
  import org.apache.hadoop.hbase.client.HTable;
  import org.apache.hadoop.hbase.coprocessor.CoprocessorHost;
  import org.apache.hadoop.hbase.regionserver.Region;
  import org.apache.hadoop.hbase.util.Bytes;
  import org.apache.hadoop.hbase.util.HFileTestUtil;
  import org.junit.After;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  public class TestRefreshHFilesBase {
    protected static final Logger LOG = LoggerFactory.getLogger(TestRefreshHFilesBase.class);
    protected static final HBaseTestingUtility HTU = new HBaseTestingUtility();
    protected static final TableName TABLE_NAME = TableName.valueOf("testRefreshRegionHFilesEP");
    protected static final byte[] FAMILY = Bytes.toBytes("family");
    protected static final byte[] QUALIFIER = Bytes.toBytes("qualifier");
    private static final int NUM_ROWS = 5;
    private static final int NUM_MASTER = 1;
    private static final int NUM_RS = 2;
    private static final byte[][] SPLIT_KEY = new byte[][] { Bytes.toBytes("30") };
    private static final String HFILE_NAME = "123abcdef";
  
    protected static Configuration CONF = HTU.getConfiguration();
    private static MiniHBaseCluster cluster;
    private static HTable table;
    private static HTableDescriptor desc;
    private static Admin hbaseAdmin;
  
  
    public static void setUp(String regionImpl) {
      try {
        CONF.set(HConstants.REGION_IMPL, regionImpl);
        CONF.setInt(HConstants.HBASE_CLIENT_RETRIES_NUMBER, 2);
  
        CONF.setStrings(CoprocessorHost.REGION_COPROCESSOR_CONF_KEY, RefreshHFilesEndpoint.class.getName());
        cluster = HTU.startMiniCluster(NUM_MASTER, NUM_RS);
  
        // Create table
        desc = new HTableDescriptor(TABLE_NAME);
        desc.addFamily(new HColumnDescriptor(FAMILY));
        hbaseAdmin = cluster.getMaster().getConnection().getAdmin();
        hbaseAdmin.createTable(desc, SPLIT_KEY);
        table = new HTable(HTU.getConfiguration(), TABLE_NAME);
  
        // this will create 2 regions spread across slaves
        HTU.loadNumericRows(table, FAMILY, 1, 20);
        HTU.flush(TABLE_NAME);
      } catch (Exception ex) {
        LOG.error("Couldn't finish setup", ex);
      }
    }
  
    @After
    public void tearDown() throws Exception {
      HTU.shutdownMiniCluster();
    }
  
    protected void addHFilesToRegions() throws IOException {
      Path tableDir = desc.getTableDir(HTU.getDefaultRootDirPath(), TABLE_NAME.toBytes());
      for (Region region : cluster.getRegions(TABLE_NAME)) {
        Path regionDir = new Path(tableDir, region.getRegionInfo().getEncodedName());
        Path familyDir = new Path(regionDir, Bytes.toString(FAMILY));
        HFileTestUtil.createHFile(HTU.getConfiguration(), HTU.getTestFileSystem(),
            new Path(familyDir, HFILE_NAME), FAMILY, QUALIFIER, Bytes.toBytes("50"),
            Bytes.toBytes("60"), NUM_ROWS);
      }
    }
  }