001/* 002 * Copyright 2012-2018 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.boot.configurationmetadata; 018 019import java.io.Serializable; 020import java.util.Collection; 021import java.util.Collections; 022import java.util.HashMap; 023import java.util.Map; 024 025/** 026 * The default {@link ConfigurationMetadataRepository} implementation. 027 * 028 * @author Stephane Nicoll 029 * @since 1.3.0 030 */ 031@SuppressWarnings("serial") 032public class SimpleConfigurationMetadataRepository 033 implements ConfigurationMetadataRepository, Serializable { 034 035 private final Map<String, ConfigurationMetadataGroup> allGroups = new HashMap<>(); 036 037 @Override 038 public Map<String, ConfigurationMetadataGroup> getAllGroups() { 039 return Collections.unmodifiableMap(this.allGroups); 040 } 041 042 @Override 043 public Map<String, ConfigurationMetadataProperty> getAllProperties() { 044 Map<String, ConfigurationMetadataProperty> properties = new HashMap<>(); 045 for (ConfigurationMetadataGroup group : this.allGroups.values()) { 046 properties.putAll(group.getProperties()); 047 } 048 return properties; 049 } 050 051 /** 052 * Register the specified {@link ConfigurationMetadataSource sources}. 053 * @param sources the sources to add 054 */ 055 public void add(Collection<ConfigurationMetadataSource> sources) { 056 for (ConfigurationMetadataSource source : sources) { 057 String groupId = source.getGroupId(); 058 ConfigurationMetadataGroup group = this.allGroups.get(groupId); 059 if (group == null) { 060 group = new ConfigurationMetadataGroup(groupId); 061 this.allGroups.put(groupId, group); 062 } 063 String sourceType = source.getType(); 064 if (sourceType != null) { 065 putIfAbsent(group.getSources(), sourceType, source); 066 } 067 } 068 } 069 070 /** 071 * Add a {@link ConfigurationMetadataProperty} with the 072 * {@link ConfigurationMetadataSource source} that defines it, if any. 073 * @param property the property to add 074 * @param source the source 075 */ 076 public void add(ConfigurationMetadataProperty property, 077 ConfigurationMetadataSource source) { 078 if (source != null) { 079 putIfAbsent(source.getProperties(), property.getId(), property); 080 } 081 putIfAbsent(getGroup(source).getProperties(), property.getId(), property); 082 } 083 084 /** 085 * Merge the content of the specified repository to this repository. 086 * @param repository the repository to include 087 */ 088 public void include(ConfigurationMetadataRepository repository) { 089 for (ConfigurationMetadataGroup group : repository.getAllGroups().values()) { 090 ConfigurationMetadataGroup existingGroup = this.allGroups.get(group.getId()); 091 if (existingGroup == null) { 092 this.allGroups.put(group.getId(), group); 093 } 094 else { 095 // Merge properties 096 group.getProperties().forEach((name, value) -> putIfAbsent( 097 existingGroup.getProperties(), name, value)); 098 // Merge sources 099 group.getSources().forEach((name, 100 value) -> putIfAbsent(existingGroup.getSources(), name, value)); 101 } 102 } 103 104 } 105 106 private ConfigurationMetadataGroup getGroup(ConfigurationMetadataSource source) { 107 if (source == null) { 108 ConfigurationMetadataGroup rootGroup = this.allGroups.get(ROOT_GROUP); 109 if (rootGroup == null) { 110 rootGroup = new ConfigurationMetadataGroup(ROOT_GROUP); 111 this.allGroups.put(ROOT_GROUP, rootGroup); 112 } 113 return rootGroup; 114 } 115 return this.allGroups.get(source.getGroupId()); 116 } 117 118 private <V> void putIfAbsent(Map<String, V> map, String key, V value) { 119 if (!map.containsKey(key)) { 120 map.put(key, value); 121 } 122 } 123 124}