/**
    * 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.regionserver;
  
  import java.util.List;
  import org.apache.hadoop.fs.FileStatus;
  import org.apache.hadoop.fs.Path;
  import org.apache.hadoop.hbase.HBaseTestingUtility;
  import org.apache.hadoop.hbase.HConstants;
  import org.apache.hadoop.hbase.HRegionInfo;
  import org.apache.hadoop.hbase.ProcedureInfo;
  import org.apache.hadoop.hbase.TableName;
  import org.apache.hadoop.hbase.master.MasterFileSystem;
  import org.apache.hadoop.hbase.protobuf.generated.ProcedureProtos;
  import org.apache.hadoop.hbase.testclassification.MediumTests;
  import org.apache.hadoop.hbase.util.FSUtils;
  import org.apache.hadoop.hbase.wal.DefaultWALProvider;
  import org.junit.AfterClass;
  import org.junit.BeforeClass;
  import org.junit.Test;
  import org.junit.experimental.categories.Category;
  import org.slf4j.Logger;
  import org.slf4j.LoggerFactory;
  
  import static org.junit.Assert.fail;
  
  @Category(MediumTests.class)
  public class TestCleanupMetaWAL {
    private static final Logger LOG = LoggerFactory.getLogger(TestCleanupMetaWAL.class);
  
    private final static HBaseTestingUtility TEST_UTIL = new HBaseTestingUtility();
  
    @BeforeClass
    public static void before() throws Exception {
      TEST_UTIL.startMiniCluster(2);
    }
  
    @AfterClass
    public static void after() throws Exception {
      TEST_UTIL.shutdownMiniZKCluster();
    }
  
    @Test
    public void testCleanupMetaWAL() throws Exception {
      TEST_UTIL.createTable(TableName.valueOf("test"), "cf");
      HRegionServer serverWithMeta = TEST_UTIL.getMiniHBaseCluster()
          .getRegionServer(TEST_UTIL.getMiniHBaseCluster().getServerWithMeta());
      TEST_UTIL.getHBaseAdmin()
          .move(HRegionInfo.FIRST_META_REGIONINFO.getEncodedNameAsBytes(), null);
      TEST_UTIL.getMiniHBaseCluster().killRegionServer(serverWithMeta.getServerName());
      int count = 0;
      boolean scpFinished = false;
      while(count < 25 && !scpFinished) {
        List<ProcedureInfo> procs = TEST_UTIL.getMiniHBaseCluster().getMaster().listProcedures();
        for(ProcedureInfo pi : procs) {
          if(pi.getProcName().startsWith("ServerCrashProcedure") && pi.getProcState() ==
              ProcedureProtos.ProcedureState.FINISHED){
            LOG.info("SCP is finished: " + pi.getProcName());
            scpFinished = true;
            break;
          }
        }
        Thread.sleep(1000);
        count++;
      }
  
      MasterFileSystem fs = TEST_UTIL.getMiniHBaseCluster().getMaster().getMasterFileSystem();
      Path walPath = new Path(fs.getWALRootDir(), HConstants.HREGION_LOGDIR_NAME);
      for (FileStatus status : FSUtils.listStatus(fs.getFileSystem(), walPath)) {
        if (status.getPath().toString().contains(DefaultWALProvider.SPLITTING_EXT)) {
          fail("Should not have splitting wal dir here:" + status);
        }
      }
    }
  }