| /** |
| * 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. |
| */ |
| |
| /** |
| * These are the messages used by Hadoop RPC to marshal the |
| * request and response in the RPC layer. |
| */ |
| option java_package = "org.apache.hadoop.ipc.protobuf"; |
| option java_outer_classname = "HadoopRpcProtos"; |
| option java_generate_equals_and_hash = true; |
| |
| /** |
| * Message used to marshal the client request |
| * from RPC client to the RPC server. |
| */ |
| message HadoopRpcRequestProto { |
| /** Name of the RPC method */ |
| required string methodName = 1; |
| |
| /** Bytes corresponding to the client protobuf request */ |
| optional bytes request = 2; |
| |
| /** protocol name of class declaring the called method */ |
| required string declaringClassProtocolName = 3; |
| |
| /** protocol version of class declaring the called method */ |
| required uint64 clientProtocolVersion = 4; |
| } |
| |
| /** |
| * At the RPC layer, this message is used to indicate |
| * the server side exception the the RPC client. |
| * |
| * Hadoop RPC client throws an exception indicated |
| * by exceptionName with the stackTrace. |
| */ |
| message HadoopRpcExceptionProto { |
| /** Class name of the exception thrown from the server */ |
| |
| optional string exceptionName = 1; |
| /** Exception stack trace from the server side */ |
| optional string stackTrace = 2; |
| } |
| |
| /** |
| * This message is used to marshal the response from |
| * RPC server to the client. |
| */ |
| message HadoopRpcResponseProto { |
| /** Status of IPC call */ |
| enum ResponseStatus { |
| SUCCESS = 1; |
| ERRROR = 2; |
| } |
| |
| required ResponseStatus status = 1; |
| |
| // Protobuf response payload from the server, when status is SUCCESS. |
| optional bytes response = 2; |
| |
| // Exception when status is ERROR or FATAL |
| optional HadoopRpcExceptionProto exception = 3; |
| } |
| |