| /** |
| * 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 static org.junit.Assert.fail; |
| |
| import java.io.IOException; |
| import java.net.InetSocketAddress; |
| |
| import org.apache.hadoop.conf.Configuration; |
| import org.apache.hadoop.fs.CommonConfigurationKeys; |
| |
| import org.apache.hadoop.ipc.protobuf.TestProtos.EchoRequestProto; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.EchoResponseProto; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.EmptyRequestProto; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.EmptyResponseProto; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.OptRequestProto; |
| import org.apache.hadoop.ipc.protobuf.TestProtos.OptResponseProto; |
| |
| import org.apache.hadoop.ipc.protobuf.TestRpcServiceProtos.OldProtobufRpcProto; |
| import org.apache.hadoop.ipc.protobuf.TestRpcServiceProtos.NewProtobufRpcProto; |
| import org.apache.hadoop.ipc.protobuf.TestRpcServiceProtos.NewerProtobufRpcProto; |
| import org.apache.hadoop.net.NetUtils; |
| import org.junit.Assert; |
| import org.junit.Test; |
| |
| import com.google.protobuf.BlockingService; |
| import com.google.protobuf.RpcController; |
| import com.google.protobuf.ServiceException; |
| |
| public class TestProtoBufRPCCompatibility { |
| |
| private static final String ADDRESS = "0.0.0.0"; |
| public final static int PORT = 0; |
| private static InetSocketAddress addr; |
| private static RPC.Server server; |
| private static Configuration conf; |
| |
| @ProtocolInfo(protocolName = "testProto", protocolVersion = 1) |
| public interface OldRpcService extends |
| OldProtobufRpcProto.BlockingInterface { |
| } |
| |
| @ProtocolInfo(protocolName = "testProto", protocolVersion = 2) |
| public interface NewRpcService extends |
| NewProtobufRpcProto.BlockingInterface { |
| } |
| |
| @ProtocolInfo(protocolName = "testProto", protocolVersion = 2) |
| public interface NewerRpcService extends |
| NewerProtobufRpcProto.BlockingInterface { |
| } |
| |
| public static class OldServerImpl implements OldRpcService { |
| |
| @Override |
| public EmptyResponseProto ping(RpcController unused, |
| EmptyRequestProto request) throws ServiceException { |
| // Ensure clientId is received |
| byte[] clientId = Server.getClientId(); |
| Assert.assertNotNull(Server.getClientId()); |
| Assert.assertEquals(16, clientId.length); |
| return EmptyResponseProto.newBuilder().build(); |
| } |
| |
| @Override |
| public EmptyResponseProto echo(RpcController unused, |
| EmptyRequestProto request) throws ServiceException { |
| // Ensure clientId is received |
| byte[] clientId = Server.getClientId(); |
| Assert.assertNotNull(Server.getClientId()); |
| Assert.assertEquals(16, clientId.length); |
| return EmptyResponseProto.newBuilder().build(); |
| } |
| } |
| |
| public static class NewServerImpl implements NewRpcService { |
| |
| @Override |
| public EmptyResponseProto ping(RpcController unused, |
| EmptyRequestProto request) throws ServiceException { |
| // Ensure clientId is received |
| byte[] clientId = Server.getClientId(); |
| Assert.assertNotNull(Server.getClientId()); |
| Assert.assertEquals(16, clientId.length); |
| return EmptyResponseProto.newBuilder().build(); |
| } |
| |
| @Override |
| public OptResponseProto echo(RpcController unused, OptRequestProto request) |
| throws ServiceException { |
| return OptResponseProto.newBuilder().setMessage(request.getMessage()) |
| .build(); |
| } |
| } |
| |
| @ProtocolInfo(protocolName = "testProto", protocolVersion = 2) |
| public static class NewerServerImpl implements NewerRpcService { |
| |
| @Override |
| public EmptyResponseProto ping(RpcController unused, |
| EmptyRequestProto request) throws ServiceException { |
| // Ensure clientId is received |
| byte[] clientId = Server.getClientId(); |
| Assert.assertNotNull(Server.getClientId()); |
| Assert.assertEquals(16, clientId.length); |
| return EmptyResponseProto.newBuilder().build(); |
| } |
| |
| @Override |
| public EmptyResponseProto echo(RpcController unused, EmptyRequestProto request) |
| throws ServiceException { |
| // Ensure clientId is received |
| byte[] clientId = Server.getClientId(); |
| Assert.assertNotNull(Server.getClientId()); |
| Assert.assertEquals(16, clientId.length); |
| return EmptyResponseProto.newBuilder().build(); |
| } |
| } |
| |
| @Test |
| public void testProtocolVersionMismatch() throws IOException, ServiceException { |
| conf = new Configuration(); |
| conf.setInt(CommonConfigurationKeys.IPC_MAXIMUM_DATA_LENGTH, 1024); |
| // Set RPC engine to protobuf RPC engine |
| RPC.setProtocolEngine(conf, NewRpcService.class, ProtobufRpcEngine.class); |
| |
| // Create server side implementation |
| NewServerImpl serverImpl = new NewServerImpl(); |
| BlockingService service = NewProtobufRpcProto |
| .newReflectiveBlockingService(serverImpl); |
| // Get RPC server for server side implementation |
| server = new RPC.Builder(conf).setProtocol(NewRpcService.class) |
| .setInstance(service).setBindAddress(ADDRESS).setPort(PORT).build(); |
| addr = NetUtils.getConnectAddress(server); |
| |
| server.start(); |
| |
| RPC.setProtocolEngine(conf, OldRpcService.class, ProtobufRpcEngine.class); |
| |
| OldRpcService proxy = RPC.getProxy(OldRpcService.class, 0, addr, conf); |
| // Verify that exception is thrown if protocolVersion is mismatch between |
| // client and server. |
| EmptyRequestProto emptyRequest = EmptyRequestProto.newBuilder().build(); |
| try { |
| proxy.ping(null, emptyRequest); |
| fail("Expected an exception to occur as version mismatch."); |
| } catch (Exception e) { |
| if (! (e.getMessage().contains("version mismatch"))){ |
| // Exception type is not what we expected, re-throw it. |
| throw new IOException(e); |
| } |
| } |
| |
| // Verify that missing of optional field is still compatible in RPC call. |
| RPC.setProtocolEngine(conf, NewerRpcService.class, ProtobufRpcEngine.class); |
| NewerRpcService newProxy = RPC.getProxy(NewerRpcService.class, 0, addr, |
| conf); |
| newProxy.echo(null, emptyRequest); |
| |
| } |
| |
| } |