/**
*
* 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.wal;
import static org.junit.Assert.assertEquals;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.InputStream;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.conf.Configuration;
import org.apache.hadoop.hbase.HConstants;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.Tag;
import org.apache.hadoop.hbase.codec.Codec.Decoder;
import org.apache.hadoop.hbase.codec.Codec.Encoder;
import org.apache.hadoop.hbase.io.util.LRUDictionary;
import org.apache.hadoop.hbase.testclassification.RegionServerTests;
import org.apache.hadoop.hbase.testclassification.SmallTests;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category({RegionServerTests.class, SmallTests.class})
public class TestWALCellCodecWithCompression {
@Test
public void testEncodeDecodeKVsWithTags() throws Exception {
doTest(false);
}
@Test
public void testEncodeDecodeKVsWithTagsWithTagsCompression() throws Exception {
doTest(true);
}
private void doTest(boolean compressTags) throws Exception {
Configuration conf = new Configuration(false);
conf.setBoolean(CompressionContext.ENABLE_WAL_TAGS_COMPRESSION, compressTags);
WALCellCodec codec = new WALCellCodec(conf, new CompressionContext(LRUDictionary.class, false,
compressTags));
ByteArrayOutputStream bos = new ByteArrayOutputStream(1024);
Encoder encoder = codec.getEncoder(bos);
encoder.write(createKV(1));
encoder.write(createKV(0));
encoder.write(createKV(2));
InputStream is = new ByteArrayInputStream(bos.toByteArray());
Decoder decoder = codec.getDecoder(is);
decoder.advance();
KeyValue kv = (KeyValue) decoder.current();
List<Tag> tags = kv.getTags();
assertEquals(1, tags.size());
assertEquals("tagValue1", Bytes.toString(tags.get(0).getValue()));
decoder.advance();
kv = (KeyValue) decoder.current();
tags = kv.getTags();
assertEquals(0, tags.size());
decoder.advance();
kv = (KeyValue) decoder.current();
tags = kv.getTags();
assertEquals(2, tags.size());
assertEquals("tagValue1", Bytes.toString(tags.get(0).getValue()));
assertEquals("tagValue2", Bytes.toString(tags.get(1).getValue()));
}
private KeyValue createKV(int noOfTags) {
byte[] row = Bytes.toBytes("myRow");
byte[] cf = Bytes.toBytes("myCF");
byte[] q = Bytes.toBytes("myQualifier");
byte[] value = Bytes.toBytes("myValue");
List<Tag> tags = new ArrayList<Tag>(noOfTags);
for (int i = 1; i <= noOfTags; i++) {
tags.add(new Tag((byte) i, Bytes.toBytes("tagValue" + i)));
}
return new KeyValue(row, cf, q, HConstants.LATEST_TIMESTAMP, value, tags);
}
}