| /** |
| * 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.util; |
| |
| import static org.junit.Assert.assertEquals; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.io.ByteArrayInputStream; |
| import java.io.ByteArrayOutputStream; |
| import java.io.DataInputStream; |
| import java.io.IOException; |
| import java.util.Arrays; |
| |
| import org.apache.hadoop.ipc.ClientId; |
| import org.apache.hadoop.ipc.RPC.RpcKind; |
| import org.apache.hadoop.ipc.RpcConstants; |
| import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RpcRequestHeaderProto; |
| import org.apache.hadoop.ipc.protobuf.RpcHeaderProtos.RpcRequestHeaderProto.OperationProto; |
| import org.junit.Test; |
| |
| import com.google.protobuf.CodedOutputStream; |
| |
| public class TestProtoUtil { |
| |
| /** |
| * Values to test encoding as variable length integers |
| */ |
| private static final int[] TEST_VINT_VALUES = new int[] { |
| 0, 1, -1, 127, 128, 129, 255, 256, 257, |
| 0x1234, -0x1234, |
| 0x123456, -0x123456, |
| 0x12345678, -0x12345678 |
| }; |
| |
| /** |
| * Test that readRawVarint32 is compatible with the varints encoded |
| * by ProtoBuf's CodedOutputStream. |
| */ |
| @Test |
| public void testVarInt() throws IOException { |
| // Test a few manufactured values |
| for (int value : TEST_VINT_VALUES) { |
| doVarIntTest(value); |
| } |
| // Check 1-bits at every bit position |
| for (int i = 1; i != 0; i <<= 1) { |
| doVarIntTest(i); |
| doVarIntTest(-i); |
| doVarIntTest(i - 1); |
| doVarIntTest(~i); |
| } |
| } |
| |
| private void doVarIntTest(int value) throws IOException { |
| ByteArrayOutputStream baos = new ByteArrayOutputStream(); |
| CodedOutputStream cout = CodedOutputStream.newInstance(baos); |
| cout.writeRawVarint32(value); |
| cout.flush(); |
| |
| DataInputStream dis = new DataInputStream( |
| new ByteArrayInputStream(baos.toByteArray())); |
| assertEquals(value, ProtoUtil.readRawVarint32(dis)); |
| } |
| |
| @Test |
| public void testRpcClientId() { |
| byte[] uuid = ClientId.getClientId(); |
| RpcRequestHeaderProto header = ProtoUtil.makeRpcRequestHeader( |
| RpcKind.RPC_PROTOCOL_BUFFER, OperationProto.RPC_FINAL_PACKET, 0, |
| RpcConstants.INVALID_RETRY_COUNT, uuid); |
| assertTrue(Arrays.equals(uuid, header.getClientId().toByteArray())); |
| } |
| } |