org.apache.hadoop.ipc.ProtobufHelper Maven / Gradle / Ivy
/**
* 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);
}
}