| /** |
| * 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.ipc; |
| |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataOutputStream; |
| import java.io.IOException; |
| import java.nio.ByteBuffer; |
| import org.apache.hadoop.io.LongWritable; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.EchoRequestProto; |
| import org.apache.hadoop.util.Time; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.protobuf.Message; |
| |
| public class TestRpcWritable {//extends TestRpcBase { |
| |
| static Writable writable = new LongWritable(Time.now()); |
| static Message message1 = |
| EchoRequestProto.newBuilder().setMessage("testing1").build(); |
| static Message message2 = |
| EchoRequestProto.newBuilder().setMessage("testing2").build(); |
| |
| @Test |
| public void testWritableWrapper() throws IOException { |
| // serial writable in byte buffer |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| writable.write(new DataOutputStream(baos)); |
| ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray()); |
| |
| // deserial |
| LongWritable actual = RpcWritable.wrap(new LongWritable()) |
| .readFrom(bb); |
| Assert.assertEquals(writable, actual); |
| Assert.assertEquals(0, bb.remaining()); |
| } |
| |
| @Test |
| public void testProtobufWrapper() throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| message1.writeDelimitedTo(baos); |
| ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray()); |
| |
| Message actual = RpcWritable.wrap(EchoRequestProto.getDefaultInstance()) |
| .readFrom(bb); |
| Assert.assertEquals(message1, actual); |
| Assert.assertEquals(0, bb.remaining()); |
| } |
| |
| @Test |
| public void testBufferWrapper() throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| DataOutputStream dos = new DataOutputStream(baos); |
| message1.writeDelimitedTo(dos); |
| message2.writeDelimitedTo(dos); |
| writable.write(dos); |
| |
| ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray()); |
| RpcWritable.Buffer buf = RpcWritable.Buffer.wrap(bb); |
| Assert.assertEquals(baos.size(), bb.remaining()); |
| Assert.assertEquals(baos.size(), buf.remaining()); |
| |
| Object actual = buf.getValue(EchoRequestProto.getDefaultInstance()); |
| Assert.assertEquals(message1, actual); |
| Assert.assertTrue(bb.remaining() > 0); |
| Assert.assertEquals(bb.remaining(), buf.remaining()); |
| |
| actual = buf.getValue(EchoRequestProto.getDefaultInstance()); |
| Assert.assertEquals(message2, actual); |
| Assert.assertTrue(bb.remaining() > 0); |
| Assert.assertEquals(bb.remaining(), buf.remaining()); |
| |
| actual = buf.newInstance(LongWritable.class, null); |
| Assert.assertEquals(writable, actual); |
| Assert.assertEquals(0, bb.remaining()); |
| Assert.assertEquals(0, buf.remaining()); |
| } |
| |
| @Test |
| public void testBufferWrapperNested() throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| DataOutputStream dos = new DataOutputStream(baos); |
| writable.write(dos); |
| message1.writeDelimitedTo(dos); |
| message2.writeDelimitedTo(dos); |
| ByteBuffer bb = ByteBuffer.wrap(baos.toByteArray()); |
| RpcWritable.Buffer buf1 = RpcWritable.Buffer.wrap(bb); |
| Assert.assertEquals(baos.size(), bb.remaining()); |
| Assert.assertEquals(baos.size(), buf1.remaining()); |
| |
| Object actual = buf1.newInstance(LongWritable.class, null); |
| Assert.assertEquals(writable, actual); |
| int left = bb.remaining(); |
| Assert.assertTrue(left > 0); |
| Assert.assertEquals(left, buf1.remaining()); |
| |
| // original bb now appears empty, but rpc writable has a slice of the bb. |
| RpcWritable.Buffer buf2 = buf1.newInstance(RpcWritable.Buffer.class, null); |
| Assert.assertEquals(0, bb.remaining()); |
| Assert.assertEquals(0, buf1.remaining()); |
| Assert.assertEquals(left, buf2.remaining()); |
| |
| actual = buf2.getValue(EchoRequestProto.getDefaultInstance()); |
| Assert.assertEquals(message1, actual); |
| Assert.assertTrue(buf2.remaining() > 0); |
| |
| actual = buf2.getValue(EchoRequestProto.getDefaultInstance()); |
| Assert.assertEquals(message2, actual); |
| Assert.assertEquals(0, buf2.remaining()); |
| } |
| } |