/*
* 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.flink.api.avro;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.Random;
import org.apache.avro.reflect.ReflectDatumReader;
import org.apache.avro.reflect.ReflectDatumWriter;
import org.apache.flink.api.io.avro.generated.Colors;
import org.apache.flink.api.io.avro.generated.User;
import org.apache.flink.util.StringUtils;
import org.junit.Test;
import static org.junit.Assert.*;
/**
* Tests the {@link DataOutputEncoder} and {@link DataInputDecoder} classes for Avro serialization.
*/
public class EncoderDecoderTest {
@Test
public void testComplexStringsDirecty() {
try {
Random rnd = new Random(349712539451944123L);
for (int i = 0; i < 10; i++) {
String testString = StringUtils.getRandomString(rnd, 10, 100);
ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
{
DataOutputStream dataOut = new DataOutputStream(baos);
DataOutputEncoder encoder = new DataOutputEncoder();
encoder.setOut(dataOut);
encoder.writeString(testString);
dataOut.flush();
dataOut.close();
}
byte[] data = baos.toByteArray();
// deserialize
{
ByteArrayInputStream bais = new ByteArrayInputStream(data);
DataInputStream dataIn = new DataInputStream(bais);
DataInputDecoder decoder = new DataInputDecoder();
decoder.setIn(dataIn);
String deserialized = decoder.readString();
assertEquals(testString, deserialized);
}
}
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
fail("Test failed due to an exception: " + e.getMessage());
}
}
@Test
public void testPrimitiveTypes() {
testObjectSerialization(new Boolean(true));
testObjectSerialization(new Boolean(false));
testObjectSerialization(new Byte((byte) 0));
testObjectSerialization(new Byte((byte) 1));
testObjectSerialization(new Byte((byte) -1));
testObjectSerialization(new Byte(Byte.MIN_VALUE));
testObjectSerialization(new Byte(Byte.MAX_VALUE));
testObjectSerialization(new Short((short) 0));
testObjectSerialization(new Short((short) 1));
testObjectSerialization(new Short((short) -1));
testObjectSerialization(new Short(Short.MIN_VALUE));
testObjectSerialization(new Short(Short.MAX_VALUE));
testObjectSerialization(new Integer(0));
testObjectSerialization(new Integer(1));
testObjectSerialization(new Integer(-1));
testObjectSerialization(new Integer(Integer.MIN_VALUE));
testObjectSerialization(new Integer(Integer.MAX_VALUE));
testObjectSerialization(new Long(0));
testObjectSerialization(new Long(1));
testObjectSerialization(new Long(-1));
testObjectSerialization(new Long(Long.MIN_VALUE));
testObjectSerialization(new Long(Long.MAX_VALUE));
testObjectSerialization(new Float(0));
testObjectSerialization(new Float(1));
testObjectSerialization(new Float(-1));
testObjectSerialization(new Float((float)Math.E));
testObjectSerialization(new Float((float)Math.PI));
testObjectSerialization(new Float(Float.MIN_VALUE));
testObjectSerialization(new Float(Float.MAX_VALUE));
testObjectSerialization(new Float(Float.MIN_NORMAL));
testObjectSerialization(new Float(Float.NaN));
testObjectSerialization(new Float(Float.NEGATIVE_INFINITY));
testObjectSerialization(new Float(Float.POSITIVE_INFINITY));
testObjectSerialization(new Double(0));
testObjectSerialization(new Double(1));
testObjectSerialization(new Double(-1));
testObjectSerialization(new Double(Math.E));
testObjectSerialization(new Double(Math.PI));
testObjectSerialization(new Double(Double.MIN_VALUE));
testObjectSerialization(new Double(Double.MAX_VALUE));
testObjectSerialization(new Double(Double.MIN_NORMAL));
testObjectSerialization(new Double(Double.NaN));
testObjectSerialization(new Double(Double.NEGATIVE_INFINITY));
testObjectSerialization(new Double(Double.POSITIVE_INFINITY));
testObjectSerialization("");
testObjectSerialization("abcdefg");
testObjectSerialization("ab\u1535\u0155xyz\u706F");
testObjectSerialization(new SimpleTypes(3637, 54876486548L, (byte) 65, "We're out looking for astronauts", (short) 0x2387, 2.65767523));
testObjectSerialization(new SimpleTypes(705608724, -1L, (byte) -65, "Serve me the sky with a big slice of lemon", (short) Byte.MIN_VALUE, 0.0000001));
}
@Test
public void testArrayTypes() {
{
int[] array = new int[] {1, 2, 3, 4, 5};
testObjectSerialization(array);
}
{
long[] array = new long[] {1, 2, 3, 4, 5};
testObjectSerialization(array);
}
{
float[] array = new float[] {1, 2, 3, 4, 5};
testObjectSerialization(array);
}
{
double[] array = new double[] {1, 2, 3, 4, 5};
testObjectSerialization(array);
}
{
String[] array = new String[] {"Oh", "my", "what", "do", "we", "have", "here", "?"};
testObjectSerialization(array);
}
}
@Test
public void testEmptyArray() {
{
int[] array = new int[0];
testObjectSerialization(array);
}
{
long[] array = new long[0];
testObjectSerialization(array);
}
{
float[] array = new float[0];
testObjectSerialization(array);
}
{
double[] array = new double[0];
testObjectSerialization(array);
}
{
String[] array = new String[0];
testObjectSerialization(array);
}
}
@Test
public void testObjects() {
// simple object containing only primitives
{
testObjectSerialization(new Book(976243875L, "The Serialization Odysse", 42));
}
// object with collection
{
ArrayList<String> list = new ArrayList<String>();
list.add("A");
list.add("B");
list.add("C");
list.add("D");
list.add("E");
testObjectSerialization(new BookAuthor(976243875L, list, "Arno Nym"));
}
// object with empty collection
{
ArrayList<String> list = new ArrayList<String>();
testObjectSerialization(new BookAuthor(987654321L, list, "The Saurus"));
}
}
@Test
public void testNestedObjectsWithCollections() {
testObjectSerialization(new ComplexNestedObject2(true));
}
@Test
public void testGeneratedObjectWithNullableFields() {
List<CharSequence> strings = Arrays.asList(new CharSequence[] { "These", "strings", "should", "be", "recognizable", "as", "a", "meaningful", "sequence" });
List<Boolean> bools = Arrays.asList(true, true, false, false, true, false, true, true);
Map<CharSequence, Long> map = new HashMap<CharSequence, Long>();
map.put("1", 1L);
map.put("2", 2L);
map.put("3", 3L);
User user = new User("Freudenreich", 1337, "macintosh gray", 1234567890L, 3.1415926, null, true, strings, bools, null, Colors.GREEN, map);
testObjectSerialization(user);
}
@Test
public void testVarLenCountEncoding() {
try {
long[] values = new long[] { 0, 1, 2, 3, 4, 0, 574, 45236, 0, 234623462, 23462462346L, 0, 9734028767869761L, 0x7fffffffffffffffL};
// write
ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
{
DataOutputStream dataOut = new DataOutputStream(baos);
for (long val : values) {
DataOutputEncoder.writeVarLongCount(dataOut, val);
}
dataOut.flush();
dataOut.close();
}
// read
{
ByteArrayInputStream bais = new ByteArrayInputStream(baos.toByteArray());
DataInputStream dataIn = new DataInputStream(bais);
for (long val : values) {
long read = DataInputDecoder.readVarLongCount(dataIn);
assertEquals("Wrong var-len encoded value read.", val, read);
}
}
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
fail("Test failed due to an exception: " + e.getMessage());
}
}
private static <X> void testObjectSerialization(X obj) {
try {
// serialize
ByteArrayOutputStream baos = new ByteArrayOutputStream(512);
{
DataOutputStream dataOut = new DataOutputStream(baos);
DataOutputEncoder encoder = new DataOutputEncoder();
encoder.setOut(dataOut);
@SuppressWarnings("unchecked")
Class<X> clazz = (Class<X>) obj.getClass();
ReflectDatumWriter<X> writer = new ReflectDatumWriter<X>(clazz);
writer.write(obj, encoder);
dataOut.flush();
dataOut.close();
}
byte[] data = baos.toByteArray();
X result = null;
// deserialize
{
ByteArrayInputStream bais = new ByteArrayInputStream(data);
DataInputStream dataIn = new DataInputStream(bais);
DataInputDecoder decoder = new DataInputDecoder();
decoder.setIn(dataIn);
@SuppressWarnings("unchecked")
Class<X> clazz = (Class<X>) obj.getClass();
ReflectDatumReader<X> reader = new ReflectDatumReader<X>(clazz);
// create a reuse object if possible, otherwise we have no reuse object
X reuse = null;
try {
@SuppressWarnings("unchecked")
X test = (X) obj.getClass().newInstance();
reuse = test;
} catch (Throwable t) {}
result = reader.read(reuse, decoder);
}
// check
final String message = "Deserialized object is not the same as the original";
if (obj.getClass().isArray()) {
Class<?> clazz = obj.getClass();
if (clazz == byte[].class) {
assertArrayEquals(message, (byte[]) obj, (byte[]) result);
}
else if (clazz == short[].class) {
assertArrayEquals(message, (short[]) obj, (short[]) result);
}
else if (clazz == int[].class) {
assertArrayEquals(message, (int[]) obj, (int[]) result);
}
else if (clazz == long[].class) {
assertArrayEquals(message, (long[]) obj, (long[]) result);
}
else if (clazz == char[].class) {
assertArrayEquals(message, (char[]) obj, (char[]) result);
}
else if (clazz == float[].class) {
assertArrayEquals(message, (float[]) obj, (float[]) result, 0.0f);
}
else if (clazz == double[].class) {
assertArrayEquals(message, (double[]) obj, (double[]) result, 0.0);
} else {
assertArrayEquals(message, (Object[]) obj, (Object[]) result);
}
} else {
assertEquals(message, obj, result);
}
}
catch (Exception e) {
System.err.println(e.getMessage());
e.printStackTrace();
fail("Test failed due to an exception: " + e.getMessage());
}
}
// --------------------------------------------------------------------------------------------
// Test Objects
// --------------------------------------------------------------------------------------------
public static final class SimpleTypes {
private final int iVal;
private final long lVal;
private final byte bVal;
private final String sVal;
private final short rVal;
private final double dVal;
public SimpleTypes() {
this(0, 0, (byte) 0, "", (short) 0, 0);
}
public SimpleTypes(int iVal, long lVal, byte bVal, String sVal, short rVal, double dVal) {
this.iVal = iVal;
this.lVal = lVal;
this.bVal = bVal;
this.sVal = sVal;
this.rVal = rVal;
this.dVal = dVal;
}
@Override
public boolean equals(Object obj) {
if (obj.getClass() == SimpleTypes.class) {
SimpleTypes other = (SimpleTypes) obj;
return other.iVal == this.iVal &&
other.lVal == this.lVal &&
other.bVal == this.bVal &&
other.sVal.equals(this.sVal) &&
other.rVal == this.rVal &&
other.dVal == this.dVal;
} else {
return false;
}
}
}
public static class ComplexNestedObject1 {
private double doubleValue;
private List<String> stringList;
public ComplexNestedObject1() {}
public ComplexNestedObject1(int offInit) {
this.doubleValue = 6293485.6723 + offInit;
this.stringList = new ArrayList<String>();
this.stringList.add("A" + offInit);
this.stringList.add("somewhat" + offInit);
this.stringList.add("random" + offInit);
this.stringList.add("collection" + offInit);
this.stringList.add("of" + offInit);
this.stringList.add("strings" + offInit);
}
@Override
public boolean equals(Object obj) {
if (obj.getClass() == ComplexNestedObject1.class) {
ComplexNestedObject1 other = (ComplexNestedObject1) obj;
return other.doubleValue == this.doubleValue && this.stringList.equals(other.stringList);
} else {
return false;
}
}
}
public static class ComplexNestedObject2 {
private long longValue;
private Map<String, ComplexNestedObject1> theMap;
public ComplexNestedObject2() {}
public ComplexNestedObject2(boolean init) {
this.longValue = 46547;
this.theMap = new HashMap<String, ComplexNestedObject1>();
this.theMap.put("36354L", new ComplexNestedObject1(43546543));
this.theMap.put("785611L", new ComplexNestedObject1(45784568));
this.theMap.put("43L", new ComplexNestedObject1(9876543));
this.theMap.put("-45687L", new ComplexNestedObject1(7897615));
this.theMap.put("1919876876896L", new ComplexNestedObject1(27154));
this.theMap.put("-868468468L", new ComplexNestedObject1(546435));
}
@Override
public boolean equals(Object obj) {
if (obj.getClass() == ComplexNestedObject2.class) {
ComplexNestedObject2 other = (ComplexNestedObject2) obj;
return other.longValue == this.longValue && this.theMap.equals(other.theMap);
} else {
return false;
}
}
}
public static class Book {
private long bookId;
private String title;
private long authorId;
public Book() {}
public Book(long bookId, String title, long authorId) {
this.bookId = bookId;
this.title = title;
this.authorId = authorId;
}
@Override
public boolean equals(Object obj) {
if (obj.getClass() == Book.class) {
Book other = (Book) obj;
return other.bookId == this.bookId && other.authorId == this.authorId && this.title.equals(other.title);
} else {
return false;
}
}
}
public static class BookAuthor {
private long authorId;
private List<String> bookTitles;
private String authorName;
public BookAuthor() {}
public BookAuthor(long authorId, List<String> bookTitles, String authorName) {
this.authorId = authorId;
this.bookTitles = bookTitles;
this.authorName = authorName;
}
@Override
public boolean equals(Object obj) {
if (obj.getClass() == BookAuthor.class) {
BookAuthor other = (BookAuthor) obj;
return other.authorName.equals(this.authorName) && other.authorId == this.authorId &&
other.bookTitles.equals(this.bookTitles);
} else {
return false;
}
}
}
}