| /* |
| * 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.hdfs.web.oauth2; |
| |
| import org.apache.hadoop.classification.InterfaceAudience; |
| import org.apache.hadoop.classification.InterfaceStability; |
| import org.apache.hadoop.conf.Configuration; |
| |
| import java.io.UnsupportedEncodingException; |
| import java.net.URLEncoder; |
| |
| @InterfaceAudience.Private |
| @InterfaceStability.Evolving |
| final class Utils { |
| private Utils() { /* Private constructor */ } |
| |
| public static String notNull(Configuration conf, String key) { |
| String value = conf.get(key); |
| |
| if(value == null) { |
| throw new IllegalArgumentException("No value for " + key + |
| " found in conf file."); |
| } |
| |
| return value; |
| } |
| |
| public static String postBody(String ... kv) |
| throws UnsupportedEncodingException { |
| if(kv.length % 2 != 0) { |
| throw new IllegalArgumentException("Arguments must be key value pairs"); |
| } |
| StringBuilder sb = new StringBuilder(); |
| int i = 0; |
| |
| while(i < kv.length) { |
| if(i > 0) { |
| sb.append("&"); |
| } |
| sb.append(URLEncoder.encode(kv[i++], "UTF-8")); |
| sb.append("="); |
| sb.append(URLEncoder.encode(kv[i++], "UTF-8")); |
| } |
| |
| return sb.toString(); |
| } |
| } |