/*
* 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.hive.spark.client.rpc;
import java.io.IOException;
import java.util.Collections;
import java.util.List;
import com.google.common.collect.Lists;
import io.netty.buffer.ByteBuf;
import io.netty.buffer.UnpooledByteBufAllocator;
import io.netty.channel.embedded.EmbeddedChannel;
import io.netty.handler.logging.LoggingHandler;
import org.junit.Test;
import static org.junit.Assert.*;
public class TestKryoMessageCodec {
private static final String MESSAGE = "Hello World!";
@Test
public void testKryoCodec() throws Exception {
List<Object> objects = encodeAndDecode(MESSAGE, null);
assertEquals(1, objects.size());
assertEquals(MESSAGE, objects.get(0));
}
@Test
public void testFragmentation() throws Exception {
ByteBuf buf = newBuffer();
Object[] messages = { "msg1", "msg2" };
int[] indices = new int[messages.length];
KryoMessageCodec codec = new KryoMessageCodec(0);
for (int i = 0; i < messages.length; i++) {
codec.encode(null, messages[i], buf);
indices[i] = buf.writerIndex();
}
List<Object> objects = Lists.newArrayList();
// Don't read enough data for the first message to be decoded.
codec.decode(null, buf.slice(0, indices[0] - 1), objects);
assertEquals(0, objects.size());
// Read enough data for just the first message to be decoded.
codec.decode(null, buf.slice(0, indices[0] + 1), objects);
assertEquals(1, objects.size());
}
@Test
public void testEmbeddedChannel() throws Exception {
EmbeddedChannel c = new EmbeddedChannel(
new LoggingHandler(getClass()),
new KryoMessageCodec(0));
c.writeAndFlush(MESSAGE);
assertEquals(1, c.outboundMessages().size());
assertFalse(MESSAGE.getClass().equals(c.outboundMessages().peek().getClass()));
c.writeInbound(c.readOutbound());
assertEquals(1, c.inboundMessages().size());
assertEquals(MESSAGE, c.readInbound());
c.close();
}
@Test
public void testAutoRegistration() throws Exception {
KryoMessageCodec codec = new KryoMessageCodec(0, TestMessage.class);
ByteBuf buf = newBuffer();
codec.encode(null, new TestMessage(), buf);
List<Object> out = Lists.newArrayList();
codec.decode(null, buf, out);
assertEquals(1, out.size());
assertTrue(out.get(0) instanceof TestMessage);
}
@Test
public void testMaxMessageSize() throws Exception {
KryoMessageCodec codec = new KryoMessageCodec(1024);
ByteBuf buf = newBuffer();
codec.encode(null, new TestMessage(new byte[512]), buf);
try {
codec.encode(null, new TestMessage(new byte[1025]), buf);
fail("Should have failed to encode large message.");
} catch (IllegalArgumentException e) {
assertTrue(e.getMessage().indexOf("maximum allowed size") > 0);
}
KryoMessageCodec unlimited = new KryoMessageCodec(0);
buf = newBuffer();
unlimited.encode(null, new TestMessage(new byte[1025]), buf);
try {
List<Object> out = Lists.newArrayList();
codec.decode(null, buf, out);
fail("Should have failed to decode large message.");
} catch (IllegalArgumentException e) {
assertTrue(e.getMessage().indexOf("maximum allowed size") > 0);
}
}
@Test
public void testNegativeMessageSize() throws Exception {
KryoMessageCodec codec = new KryoMessageCodec(1024);
ByteBuf buf = newBuffer();
buf.writeInt(-1);
try {
List<Object> out = Lists.newArrayList();
codec.decode(null, buf, out);
fail("Should have failed to decode message with negative size.");
} catch (IllegalArgumentException e) {
assertTrue(e.getMessage().indexOf("must be positive") > 0);
}
}
@Test
public void testEncryptionOnly() throws Exception {
List<Object> objects = Collections.<Object>emptyList();
try {
objects = encodeAndDecode(MESSAGE, new TestEncryptionHandler(true, false));
} catch (Exception e) {
// Pass.
}
// Do this check in case the ciphertext actually makes sense in some way.
for (Object msg : objects) {
assertFalse(MESSAGE.equals(objects.get(0)));
}
}
@Test
public void testDecryptionOnly() throws Exception {
List<Object> objects = Collections.<Object>emptyList();
try {
objects = encodeAndDecode(MESSAGE, new TestEncryptionHandler(false, true));
} catch (Exception e) {
// Pass.
}
// Do this check in case the decrypted plaintext actually makes sense in some way.
for (Object msg : objects) {
assertFalse(MESSAGE.equals(objects.get(0)));
}
}
@Test
public void testEncryptDecrypt() throws Exception {
List<Object> objects = encodeAndDecode(MESSAGE, new TestEncryptionHandler(true, true));
assertEquals(1, objects.size());
assertEquals(MESSAGE, objects.get(0));
}
private List<Object> encodeAndDecode(Object message, KryoMessageCodec.EncryptionHandler eh)
throws Exception {
ByteBuf buf = newBuffer();
KryoMessageCodec codec = new KryoMessageCodec(0);
codec.setEncryptionHandler(eh);
codec.encode(null, message, buf);
List<Object> objects = Lists.newArrayList();
codec.decode(null, buf, objects);
return objects;
}
private ByteBuf newBuffer() {
return UnpooledByteBufAllocator.DEFAULT.buffer(1024);
}
private static class TestMessage {
byte[] data;
TestMessage() {
this(null);
}
TestMessage(byte[] data) {
this.data = data;
}
}
private static class TestEncryptionHandler implements KryoMessageCodec.EncryptionHandler {
private static final byte KEY = 0x42;
private final boolean encrypt;
private final boolean decrypt;
TestEncryptionHandler(boolean encrypt, boolean decrypt) {
this.encrypt = encrypt;
this.decrypt = decrypt;
}
public byte[] wrap(byte[] data, int offset, int len) throws IOException {
return encrypt ? transform(data, offset, len) : data;
}
public byte[] unwrap(byte[] data, int offset, int len) throws IOException {
return decrypt ? transform(data, offset, len) : data;
}
public void dispose() throws IOException {
}
private byte[] transform(byte[] data, int offset, int len) {
byte[] dest = new byte[len];
for (int i = 0; i < len; i++) {
dest[i] = (byte) (data[offset + i] ^ KEY);
}
return dest;
}
}
}