| /** |
| * 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.mapreduce.security; |
| |
| import java.io.DataInput; |
| import java.io.DataOutput; |
| import java.io.IOException; |
| import org.apache.hadoop.io.Writable; |
| import org.apache.hadoop.io.WritableUtils; |
| import org.apache.hadoop.classification.InterfaceAudience; |
| |
| /** |
| * get/set, store/load security keys |
| * key's value - byte[] |
| * store/load from DataInput/DataOuptut |
| * List of currently store keys: |
| * jobToken for secure shuffle HTTP Get |
| * |
| */ |
| @InterfaceAudience.Private |
| public class JobTokens implements Writable { |
| /** |
| * file name used on HDFS for generated keys |
| */ |
| public static final String JOB_TOKEN_FILENAME = "jobTokens"; |
| |
| private byte [] shuffleJobToken = null; // jobtoken for shuffle (map output) |
| |
| |
| /** |
| * returns the key value for the alias |
| * @return key for this alias |
| */ |
| public byte[] getShuffleJobToken() { |
| return shuffleJobToken; |
| } |
| |
| /** |
| * sets the jobToken |
| * @param key |
| */ |
| public void setShuffleJobToken(byte[] key) { |
| shuffleJobToken = key; |
| } |
| |
| /** |
| * stores all the keys to DataOutput |
| * @param out |
| * @throws IOException |
| */ |
| @Override |
| public void write(DataOutput out) throws IOException { |
| WritableUtils.writeCompressedByteArray(out, shuffleJobToken); |
| } |
| |
| /** |
| * loads all the keys |
| * @param in |
| * @throws IOException |
| */ |
| @Override |
| public void readFields(DataInput in) throws IOException { |
| shuffleJobToken = WritableUtils.readCompressedByteArray(in); |
| } |
| } |