001/* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019package org.apache.reef.runtime.hdinsight.client.yarnrest; 020 021import org.codehaus.jackson.annotate.JsonProperty; 022import org.codehaus.jackson.map.ObjectMapper; 023import org.codehaus.jackson.map.annotate.JsonSerialize; 024 025import java.io.IOException; 026import java.io.StringWriter; 027import java.util.ArrayList; 028import java.util.HashMap; 029import java.util.List; 030import java.util.Map; 031 032/** 033 * Represents credentials for an application in the YARN REST API. 034 * For detailed information, please refer to 035 * https://hadoop.apache.org/docs/r2.6.0/hadoop-yarn/hadoop-yarn-site/ResourceManagerRest.html 036 */ 037public class Credentials { 038 039 private static final String CREDENTIALS = "credentials"; 040 private static final ObjectMapper OBJECT_MAPPER = new ObjectMapper(); 041 042 private Map<String, List<StringEntry>> tokens = new HashMap<>(); 043 private Map<String, List<StringEntry>> secrets = new HashMap<>(); 044 045 public Credentials() { 046 this.tokens.put(Constants.ENTRY, new ArrayList<StringEntry>()); 047 this.secrets.put(Constants.ENTRY, new ArrayList<StringEntry>()); 048 } 049 050 public Credentials addSecret(final String key, final String value) { 051 if (!this.secrets.containsKey(Constants.ENTRY)) { 052 this.secrets.put(Constants.ENTRY, new ArrayList<StringEntry>()); 053 } 054 this.secrets.get(Constants.ENTRY).add(new StringEntry(key, value)); 055 return this; 056 } 057 058 public Credentials addToken(final String key, final String value) { 059 if (!this.tokens.containsKey(Constants.ENTRY)) { 060 this.tokens.put(Constants.ENTRY, new ArrayList<StringEntry>()); 061 } 062 this.tokens.get(Constants.ENTRY).add(new StringEntry(key, value)); 063 return this; 064 } 065 066 @JsonProperty(Constants.SECRETS) 067 @JsonSerialize(include = JsonSerialize.Inclusion.NON_DEFAULT) 068 public Map<String, List<StringEntry>> getSecrets() { 069 return this.secrets; 070 } 071 072 public Credentials setSecrets(final Map<String, List<StringEntry>> secrets) { 073 this.secrets = secrets; 074 return this; 075 } 076 077 @JsonProperty(Constants.TOKENS) 078 @JsonSerialize(include = JsonSerialize.Inclusion.NON_DEFAULT) 079 public Map<String, List<StringEntry>> getTokens() { 080 return this.tokens; 081 } 082 083 public Credentials setTokens(final Map<String, List<StringEntry>> tokens) { 084 this.tokens = tokens; 085 return this; 086 } 087 088 @Override 089 public String toString() { 090 final StringWriter writer = new StringWriter(); 091 final String objectString; 092 try { 093 OBJECT_MAPPER.writeValue(writer, this); 094 objectString = writer.toString(); 095 } catch (final IOException e) { 096 throw new RuntimeException("Exception while serializing Credentials: " + e); 097 } 098 099 return CREDENTIALS + objectString; 100 } 101}