| /** |
| * 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.IOException; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| |
| import com.google.protobuf.ServiceException; |
| |
| /** |
| * Helper methods for protobuf related RPC implementation |
| */ |
| @InterfaceAudience.Private |
| public class ProtobufHelper { |
| private ProtobufHelper() { |
| // Hidden constructor for class with only static helper methods |
| } |
| |
| /** |
| * Return the IOException thrown by the remote server wrapped in |
| * ServiceException as cause. |
| * @param se ServiceException that wraps IO exception thrown by the server |
| * @return Exception wrapped in ServiceException or |
| * a new IOException that wraps the unexpected ServiceException. |
| */ |
| public static IOException getRemoteException(ServiceException se) { |
| Throwable e = se.getCause(); |
| if (e == null) { |
| return new IOException(se); |
| } |
| return e instanceof IOException ? (IOException) e : new IOException(se); |
| } |
| } |