| /* |
| * 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.servicecomb.config.common; |
| |
| import java.nio.charset.StandardCharsets; |
| import java.util.Collections; |
| import java.util.Enumeration; |
| import java.util.HashMap; |
| import java.util.List; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| import org.springframework.beans.factory.config.YamlPropertiesFactoryBean; |
| import org.springframework.core.io.ByteArrayResource; |
| import org.springframework.util.CollectionUtils; |
| |
| public class ConfigConverter { |
| private Map<String, Object> currentData = Collections.emptyMap(); |
| |
| private Map<String, Object> lastRawData; |
| |
| private final List<String> fileSources; |
| |
| public ConfigConverter(List<String> fileSources) { |
| this.fileSources = fileSources; |
| } |
| |
| public Map<String, Object> getLastRawData() { |
| return this.lastRawData; |
| } |
| |
| public Map<String, Object> getCurrentData() { |
| return this.currentData; |
| } |
| |
| public Map<String, Object> updateData(Map<String, Object> rawData) { |
| Map<String, Object> lastData = this.currentData; |
| |
| this.lastRawData = rawData; |
| |
| if (CollectionUtils.isEmpty(fileSources)) { |
| this.currentData = rawData; |
| return lastData; |
| } |
| |
| Map<String, Object> fileProperties = new HashMap<>(); |
| fileSources.forEach(source -> { |
| if (rawData.get(source) != null) { |
| fileProperties.put(source, rawData.get(source)); |
| } |
| }); |
| |
| Map<String, Object> result = new HashMap<>(rawData.size()); |
| result.putAll(rawData); |
| fileProperties.forEach((k, v) -> result.putAll(createFileSource(v))); |
| this.currentData = result; |
| return lastData; |
| } |
| |
| private Map<String, Object> createFileSource(Object v) { |
| YamlPropertiesFactoryBean yamlFactory = new YamlPropertiesFactoryBean(); |
| yamlFactory.setResources(new ByteArrayResource(v.toString().getBytes(StandardCharsets.UTF_8))); |
| return propertiesToMap(yamlFactory.getObject()); |
| } |
| |
| @SuppressWarnings("unchecked") |
| private Map<String, Object> propertiesToMap(Properties properties) { |
| if (properties == null) { |
| return Collections.emptyMap(); |
| } |
| Map<String, Object> result = new HashMap<>(); |
| Enumeration<String> keys = (Enumeration<String>) properties.propertyNames(); |
| while (keys.hasMoreElements()) { |
| String key = keys.nextElement(); |
| Object value = properties.getProperty(key); |
| result.put(key, value); |
| } |
| return result; |
| } |
| } |