/*
* 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.codec.prefixtree.row;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Collection;
import java.util.List;
import org.apache.hadoop.hbase.Cell;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.KeyValueUtil;
import org.apache.hadoop.hbase.codec.prefixtree.PrefixTreeBlockMeta;
import org.apache.hadoop.hbase.codec.prefixtree.decode.PrefixTreeArraySearcher;
import org.apache.hadoop.hbase.codec.prefixtree.encode.PrefixTreeEncoder;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Assert;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
import com.google.common.collect.Lists;
@RunWith(Parameterized.class)
public class TestRowEncoder {
protected static int BLOCK_START = 7;
@Parameters
public static Collection<Object[]> parameters() {
List<Object[]> parameters = Lists.newArrayList();
for (TestRowData testRows : TestRowData.InMemory.getAll()) {
parameters.add(new Object[] { testRows });
}
return parameters;
}
protected TestRowData rows;
protected List<KeyValue> inputKvs;
protected boolean includeMemstoreTS = true;
protected ByteArrayOutputStream os;
protected PrefixTreeEncoder encoder;
protected int totalBytes;
protected PrefixTreeBlockMeta blockMetaWriter;
protected byte[] outputBytes;
protected ByteBuffer buffer;
protected ByteArrayInputStream is;
protected PrefixTreeBlockMeta blockMetaReader;
protected byte[] inputBytes;
protected PrefixTreeArraySearcher searcher;
public TestRowEncoder(TestRowData testRows) {
this.rows = testRows;
}
@Before
public void compile() throws IOException {
os = new ByteArrayOutputStream(1 << 20);
encoder = new PrefixTreeEncoder(os, includeMemstoreTS);
inputKvs = rows.getInputs();
for (KeyValue kv : inputKvs) {
encoder.write(kv);
}
encoder.flush();
totalBytes = encoder.getTotalBytes();
blockMetaWriter = encoder.getBlockMeta();
outputBytes = os.toByteArray();
// start reading, but save the assertions for @Test methods
buffer = ByteBuffer.wrap(outputBytes);
blockMetaReader = new PrefixTreeBlockMeta(buffer);
searcher = new PrefixTreeArraySearcher(blockMetaReader, blockMetaReader.getRowTreeDepth(),
blockMetaReader.getMaxRowLength(), blockMetaReader.getMaxQualifierLength());
searcher.initOnBlock(blockMetaReader, outputBytes, includeMemstoreTS);
}
@Test
public void testEncoderOutput() throws IOException {
Assert.assertEquals(totalBytes, outputBytes.length);
Assert.assertEquals(blockMetaWriter, blockMetaReader);
}
@Test
public void testForwardScanner() {
int counter = -1;
while (searcher.advance()) {
++counter;
KeyValue inputKv = rows.getInputs().get(counter);
KeyValue outputKv = KeyValueUtil.copyToNewKeyValue(searcher.current());
assertKeyAndValueEqual(inputKv, outputKv);
}
// assert same number of cells
Assert.assertEquals(rows.getInputs().size(), counter + 1);
}
/**
* probably not needed since testReverseScannerWithJitter() below is more thorough
*/
@Test
public void testReverseScanner() {
searcher.positionAfterLastCell();
int counter = -1;
while (searcher.previous()) {
++counter;
int oppositeIndex = rows.getInputs().size() - counter - 1;
KeyValue inputKv = rows.getInputs().get(oppositeIndex);
KeyValue outputKv = KeyValueUtil.copyToNewKeyValue(searcher.current());
assertKeyAndValueEqual(inputKv, outputKv);
}
Assert.assertEquals(rows.getInputs().size(), counter + 1);
}
/**
* Exercise the nubCellsRemain variable by calling next+previous. NubCellsRemain is basically
* a special fan index.
*/
@Test
public void testReverseScannerWithJitter() {
searcher.positionAfterLastCell();
int counter = -1;
while (true) {
boolean foundCell = searcher.previous();
if (!foundCell) {
break;
}
++counter;
// a next+previous should cancel out
if (!searcher.isAfterLast()) {
searcher.advance();
searcher.previous();
}
int oppositeIndex = rows.getInputs().size() - counter - 1;
KeyValue inputKv = rows.getInputs().get(oppositeIndex);
KeyValue outputKv = KeyValueUtil.copyToNewKeyValue(searcher.current());
assertKeyAndValueEqual(inputKv, outputKv);
}
Assert.assertEquals(rows.getInputs().size(), counter + 1);
}
@Test
public void testIndividualBlockMetaAssertions() {
rows.individualBlockMetaAssertions(blockMetaReader);
}
/**************** helper **************************/
protected void assertKeyAndValueEqual(Cell expected, Cell actual) {
// assert keys are equal (doesn't compare values)
Assert.assertEquals(expected, actual);
if (includeMemstoreTS) {
Assert.assertEquals(expected.getMvccVersion(), actual.getMvccVersion());
}
// assert values equal
Assert.assertTrue(Bytes.equals(expected.getValueArray(), expected.getValueOffset(),
expected.getValueLength(), actual.getValueArray(), actual.getValueOffset(),
actual.getValueLength()));
}
}