001/**
002 *
003 * Licensed to the Apache Software Foundation (ASF) under one
004 * or more contributor license agreements.  See the NOTICE file
005 * distributed with this work for additional information
006 * regarding copyright ownership.  The ASF licenses this file
007 * to you under the Apache License, Version 2.0 (the
008 * "License"); you may not use this file except in compliance
009 * with the License.  You may obtain a copy of the License at
010 *
011 *     http://www.apache.org/licenses/LICENSE-2.0
012 *
013 * Unless required by applicable law or agreed to in writing, software
014 * distributed under the License is distributed on an "AS IS" BASIS,
015 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
016 * See the License for the specific language governing permissions and
017 * limitations under the License.
018 */
019
020package org.apache.hadoop.hbase.wal;
021
022import java.io.IOException;
023import org.apache.hadoop.conf.Configuration;
024import org.apache.hadoop.fs.FileSystem;
025import org.apache.hadoop.fs.Path;
026import org.apache.hadoop.hbase.client.RegionInfo;
027import org.apache.hadoop.hbase.regionserver.wal.FSHLog;
028import org.apache.yetus.audience.InterfaceAudience;
029
030// imports for things that haven't moved yet
031
032/**
033 * This is a utility class, used by tests, which fails operation specified by FailureType enum
034 */
035@InterfaceAudience.Private
036public class FaultyFSLog extends FSHLog {
037  public enum FailureType {
038    NONE, APPEND, SYNC
039  }
040  FailureType ft = FailureType.NONE;
041
042  public FaultyFSLog(FileSystem fs, Path rootDir, String logName, Configuration conf)
043      throws IOException {
044    super(fs, rootDir, logName, conf);
045  }
046
047  public void setFailureType(FailureType fType) {
048    this.ft = fType;
049  }
050
051  @Override
052  protected void doSync(long txid, boolean forceSync) throws IOException {
053    if (this.ft == FailureType.SYNC) {
054      throw new IOException("sync");
055    }
056    super.doSync(txid, forceSync);
057  }
058
059  @Override
060  protected long append(RegionInfo info, WALKeyImpl key, WALEdit edits, boolean inMemstore)
061      throws IOException {
062    if (this.ft == FailureType.APPEND) {
063      throw new IOException("append");
064    }
065    return super.append(info, key, edits, inMemstore);
066  }
067}
068