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.codec;
019
020import static org.junit.jupiter.api.Assertions.assertEquals;
021import static org.junit.jupiter.api.Assertions.assertFalse;
022import static org.junit.jupiter.api.Assertions.assertTrue;
023
024import java.io.ByteArrayInputStream;
025import java.io.ByteArrayOutputStream;
026import java.io.DataInputStream;
027import java.io.DataOutputStream;
028import java.io.IOException;
029import org.apache.hadoop.hbase.KeyValue;
030import org.apache.hadoop.hbase.testclassification.MiscTests;
031import org.apache.hadoop.hbase.testclassification.SmallTests;
032import org.apache.hadoop.hbase.util.Bytes;
033import org.junit.jupiter.api.Tag;
034import org.junit.jupiter.api.Test;
035
036import org.apache.hbase.thirdparty.com.google.common.io.CountingInputStream;
037import org.apache.hbase.thirdparty.com.google.common.io.CountingOutputStream;
038
039@Tag(MiscTests.TAG)
040@Tag(SmallTests.TAG)
041public class TestKeyValueCodec {
042
043  @Test
044  public void testEmptyWorks() throws IOException {
045    ByteArrayOutputStream baos = new ByteArrayOutputStream();
046    CountingOutputStream cos = new CountingOutputStream(baos);
047    DataOutputStream dos = new DataOutputStream(cos);
048    KeyValueCodec kvc = new KeyValueCodec();
049    Codec.Encoder encoder = kvc.getEncoder(dos);
050    encoder.flush();
051    dos.close();
052    long offset = cos.getCount();
053    assertEquals(0, offset);
054    CountingInputStream cis = new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
055    DataInputStream dis = new DataInputStream(cis);
056    Codec.Decoder decoder = kvc.getDecoder(dis);
057    assertFalse(decoder.advance());
058    dis.close();
059    assertEquals(0, cis.getCount());
060  }
061
062  @Test
063  public void testOne() throws IOException {
064    ByteArrayOutputStream baos = new ByteArrayOutputStream();
065    CountingOutputStream cos = new CountingOutputStream(baos);
066    DataOutputStream dos = new DataOutputStream(cos);
067    KeyValueCodec kvc = new KeyValueCodec();
068    Codec.Encoder encoder = kvc.getEncoder(dos);
069    final KeyValue kv =
070      new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"), Bytes.toBytes("v"));
071    final int length = kv.getLength() + Bytes.SIZEOF_INT;
072    encoder.write(kv);
073    encoder.flush();
074    dos.close();
075    long offset = cos.getCount();
076    assertEquals(length, offset);
077    CountingInputStream cis = new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
078    DataInputStream dis = new DataInputStream(cis);
079    Codec.Decoder decoder = kvc.getDecoder(dis);
080    assertTrue(decoder.advance()); // First read should pull in the KV
081    // Second read should trip over the end-of-stream marker and return false
082    assertFalse(decoder.advance());
083    dis.close();
084    assertEquals(length, cis.getCount());
085  }
086
087  @Test
088  public void testThree() throws IOException {
089    ByteArrayOutputStream baos = new ByteArrayOutputStream();
090    CountingOutputStream cos = new CountingOutputStream(baos);
091    DataOutputStream dos = new DataOutputStream(cos);
092    KeyValueCodec kvc = new KeyValueCodec();
093    Codec.Encoder encoder = kvc.getEncoder(dos);
094    final KeyValue kv1 =
095      new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("1"), Bytes.toBytes("1"));
096    final KeyValue kv2 =
097      new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("2"), Bytes.toBytes("2"));
098    final KeyValue kv3 =
099      new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("3"), Bytes.toBytes("3"));
100    final int length = kv1.getLength() + Bytes.SIZEOF_INT;
101    encoder.write(kv1);
102    encoder.write(kv2);
103    encoder.write(kv3);
104    encoder.flush();
105    dos.close();
106    long offset = cos.getCount();
107    assertEquals(length * 3, offset);
108    CountingInputStream cis = new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
109    DataInputStream dis = new DataInputStream(cis);
110    Codec.Decoder decoder = kvc.getDecoder(dis);
111    assertTrue(decoder.advance());
112    KeyValue kv = (KeyValue) decoder.current();
113    assertTrue(kv1.equals(kv));
114    assertTrue(decoder.advance());
115    kv = (KeyValue) decoder.current();
116    assertTrue(kv2.equals(kv));
117    assertTrue(decoder.advance());
118    kv = (KeyValue) decoder.current();
119    assertTrue(kv3.equals(kv));
120    assertFalse(decoder.advance());
121    dis.close();
122    assertEquals((length * 3), cis.getCount());
123  }
124}