/**
* 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;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import org.apache.hadoop.hbase.KeyValue;
import org.apache.hadoop.hbase.SmallTests;
import org.apache.hadoop.hbase.codec.Codec;
import org.apache.hadoop.hbase.codec.KeyValueCodec;
import org.apache.hadoop.hbase.util.Bytes;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.google.common.io.CountingInputStream;
import com.google.common.io.CountingOutputStream;
@Category(SmallTests.class)
public class TestKeyValueCodec {
@Test
public void testEmptyWorks() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
CountingOutputStream cos = new CountingOutputStream(baos);
DataOutputStream dos = new DataOutputStream(cos);
KeyValueCodec kvc = new KeyValueCodec();
Codec.Encoder encoder = kvc.getEncoder(dos);
encoder.flush();
dos.close();
long offset = cos.getCount();
assertEquals(0, offset);
CountingInputStream cis =
new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
DataInputStream dis = new DataInputStream(cis);
Codec.Decoder decoder = kvc.getDecoder(dis);
assertFalse(decoder.advance());
dis.close();
assertEquals(0, cis.getCount());
}
@Test
public void testOne() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
CountingOutputStream cos = new CountingOutputStream(baos);
DataOutputStream dos = new DataOutputStream(cos);
KeyValueCodec kvc = new KeyValueCodec();
Codec.Encoder encoder = kvc.getEncoder(dos);
final KeyValue kv =
new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("q"), Bytes.toBytes("v"));
final long length = kv.getLength() + Bytes.SIZEOF_INT;
encoder.write(kv);
encoder.flush();
dos.close();
long offset = cos.getCount();
assertEquals(length, offset);
CountingInputStream cis =
new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
DataInputStream dis = new DataInputStream(cis);
Codec.Decoder decoder = kvc.getDecoder(dis);
assertTrue(decoder.advance()); // First read should pull in the KV
// Second read should trip over the end-of-stream marker and return false
assertFalse(decoder.advance());
dis.close();
assertEquals(length, cis.getCount());
}
@Test
public void testThree() throws IOException {
ByteArrayOutputStream baos = new ByteArrayOutputStream();
CountingOutputStream cos = new CountingOutputStream(baos);
DataOutputStream dos = new DataOutputStream(cos);
KeyValueCodec kvc = new KeyValueCodec();
Codec.Encoder encoder = kvc.getEncoder(dos);
final KeyValue kv1 =
new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("1"), Bytes.toBytes("1"));
final KeyValue kv2 =
new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("2"), Bytes.toBytes("2"));
final KeyValue kv3 =
new KeyValue(Bytes.toBytes("r"), Bytes.toBytes("f"), Bytes.toBytes("3"), Bytes.toBytes("3"));
final long length = kv1.getLength() + Bytes.SIZEOF_INT;
encoder.write(kv1);
encoder.write(kv2);
encoder.write(kv3);
encoder.flush();
dos.close();
long offset = cos.getCount();
assertEquals(length * 3, offset);
CountingInputStream cis =
new CountingInputStream(new ByteArrayInputStream(baos.toByteArray()));
DataInputStream dis = new DataInputStream(cis);
Codec.Decoder decoder = kvc.getDecoder(dis);
assertTrue(decoder.advance());
KeyValue kv = (KeyValue)decoder.current();
assertTrue(kv1.equals(kv));
assertTrue(decoder.advance());
kv = (KeyValue)decoder.current();
assertTrue(kv2.equals(kv));
assertTrue(decoder.advance());
kv = (KeyValue)decoder.current();
assertTrue(kv3.equals(kv));
assertFalse(decoder.advance());
dis.close();
assertEquals((length * 3), cis.getCount());
}
}