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.regionserver.wal;
019
020import java.io.IOException;
021import java.io.InterruptedIOException;
022import java.util.concurrent.ExecutionException;
023import org.apache.hadoop.hbase.wal.WAL.Entry;
024import org.apache.hadoop.hbase.wal.WALProvider;
025import org.apache.hadoop.hbase.wal.WALProvider.AsyncWriter;
026
027import org.apache.hbase.thirdparty.com.google.common.base.Throwables;
028
029class WriterOverAsyncWriter implements WALProvider.Writer {
030
031  private final WALProvider.AsyncWriter asyncWriter;
032
033  public WriterOverAsyncWriter(AsyncWriter asyncWriter) {
034    this.asyncWriter = asyncWriter;
035  }
036
037  @Override
038  public void close() throws IOException {
039    asyncWriter.close();
040  }
041
042  @Override
043  public long getLength() {
044    return asyncWriter.getLength();
045  }
046
047  @Override
048  public long getSyncedLength() {
049    return asyncWriter.getSyncedLength();
050  }
051
052  @Override
053  public void append(Entry entry) throws IOException {
054    asyncWriter.append(entry);
055  }
056
057  @Override
058  public void sync(boolean forceSync) throws IOException {
059    try {
060      asyncWriter.sync(forceSync).get();
061    } catch (InterruptedException e) {
062      throw new InterruptedIOException();
063    } catch (ExecutionException e) {
064      Throwables.propagateIfPossible(e.getCause(), IOException.class);
065      throw new IOException(e.getCause());
066    }
067  }
068}