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