/**
* 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.io;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.Tag;
import org.apache.hadoop.hbase.io.util.LRUDictionary;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;
import org.junit.experimental.categories.Category;
@Category(SmallTests.class)
public class TestTagCompressionContext {
private static final byte[] ROW = Bytes.toBytes("r1");
private static final byte[] CF = Bytes.toBytes("f");
private static final byte[] Q = Bytes.toBytes("q");
private static final byte[] V = Bytes.toBytes("v");
@Test
public void testCompressUncompressTags1() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
TagCompressionContext context = new TagCompressionContext(LRUDictionary.class);
KeyValue kv1 = createKVWithTags(2);
short tagsLength1 = kv1.getTagsLength();
ByteBuffer ib = ByteBuffer.wrap(kv1.getTagsArray(), kv1.getTagsOffset(), tagsLength1);
context.compressTags(baos, ib, tagsLength1);
KeyValue kv2 = createKVWithTags(3);
short tagsLength2 = kv2.getTagsLength();
ib = ByteBuffer.wrap(kv2.getTagsArray(), kv2.getTagsOffset(), tagsLength2);
context.compressTags(baos, ib, tagsLength2);
context.clear();
byte[] dest = new byte[tagsLength1];
ByteBuffer ob = ByteBuffer.wrap(baos.toByteArray());
context.uncompressTags(ob, dest, 0, tagsLength1);
assertTrue(Bytes.equals(kv1.getTagsArray(), kv1.getTagsOffset(), tagsLength1, dest, 0,
tagsLength1));
dest = new byte[tagsLength2];
context.uncompressTags(ob, dest, 0, tagsLength2);
assertTrue(Bytes.equals(kv2.getTagsArray(), kv2.getTagsOffset(), tagsLength2, dest, 0,
tagsLength2));
}
@Test
public void testCompressUncompressTags2() throws Exception {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
TagCompressionContext context = new TagCompressionContext(LRUDictionary.class);
KeyValue kv1 = createKVWithTags(1);
short tagsLength1 = kv1.getTagsLength();
context.compressTags(baos, kv1.getTagsArray(), kv1.getTagsOffset(), tagsLength1);
KeyValue kv2 = createKVWithTags(3);
short tagsLength2 = kv2.getTagsLength();
context.compressTags(baos, kv2.getTagsArray(), kv2.getTagsOffset(), tagsLength2);
context.clear();
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
byte[] dest = new byte[tagsLength1];
context.uncompressTags(bais, dest, 0, tagsLength1);
assertTrue(Bytes.equals(kv1.getTagsArray(), kv1.getTagsOffset(), tagsLength1, dest, 0,
tagsLength1));
dest = new byte[tagsLength2];
context.uncompressTags(bais, dest, 0, tagsLength2);
assertTrue(Bytes.equals(kv2.getTagsArray(), kv2.getTagsOffset(), tagsLength2, dest, 0,
tagsLength2));
}
private KeyValue createKVWithTags(int noOfTags) {
List<Tag> tags = new ArrayList<Tag>();
for (int i = 0; i < noOfTags; i++) {
tags.add(new Tag((byte) i, "tagValue" + i));
}
KeyValue kv = new KeyValue(ROW, CF, Q, 1234L, V, tags);
return kv;
}
}