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 static org.junit.Assert.assertEquals;
021
022import org.apache.hadoop.conf.Configuration;
023import org.apache.hadoop.hbase.HBaseClassTestRule;
024import org.apache.hadoop.hbase.testclassification.RegionServerTests;
025import org.apache.hadoop.hbase.testclassification.SmallTests;
026import org.junit.ClassRule;
027import org.junit.Test;
028import org.junit.experimental.categories.Category;
029
030/**
031 * Test that we can create, load, setup our own custom codec
032 */
033@Category({ RegionServerTests.class, SmallTests.class })
034public class TestCustomWALCellCodec {
035
036  @ClassRule
037  public static final HBaseClassTestRule CLASS_RULE =
038    HBaseClassTestRule.forClass(TestCustomWALCellCodec.class);
039
040  public static class CustomWALCellCodec extends WALCellCodec {
041    public Configuration conf;
042    public CompressionContext context;
043
044    public CustomWALCellCodec(Configuration conf, CompressionContext compression) {
045      super(conf, compression);
046      this.conf = conf;
047      this.context = compression;
048    }
049  }
050
051  /**
052   * Test that a custom {@link WALCellCodec} will be completely setup when it is instantiated via
053   * {@link WALCellCodec}
054   * @throws Exception on failure
055   */
056  @Test
057  public void testCreatePreparesCodec() throws Exception {
058    Configuration conf = new Configuration(false);
059    conf.setClass(WALCellCodec.WAL_CELL_CODEC_CLASS_KEY, CustomWALCellCodec.class,
060      WALCellCodec.class);
061    CustomWALCellCodec codec = (CustomWALCellCodec) WALCellCodec.create(conf, null, null);
062    assertEquals("Custom codec didn't get initialized with the right configuration!", conf,
063      codec.conf);
064    assertEquals("Custom codec didn't get initialized with the right compression context!", null,
065      codec.context);
066  }
067
068  /**
069   * Test that a custom {@link WALCellCodec} will fail if provided an invalid code class.
070   */
071  @Test(expected = RuntimeException.class)
072  public void testCreatePreparesCodecInvalidClass() throws Exception {
073    Configuration conf = new Configuration(false);
074    conf.setStrings(WALCellCodec.WAL_CELL_CODEC_CLASS_KEY, "org.apache.hbase.wal.NoSuchClass");
075    WALCellCodec.create(conf, null, null);
076  }
077}