| /* |
| * 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 com.alibaba.dubbo.config.spring.util; |
| |
| import org.springframework.core.env.EnumerablePropertySource; |
| import org.springframework.core.env.PropertySource; |
| import org.springframework.core.env.PropertySources; |
| |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Properties; |
| |
| /** |
| * {@link PropertySources} Utilities |
| * |
| * @see PropertySources |
| * @since 2.5.8 |
| */ |
| public abstract class PropertySourcesUtils { |
| |
| /** |
| * Get Sub {@link Properties} |
| * |
| * @param propertySources {@link PropertySource} Iterable |
| * @param prefix the prefix of property name |
| * @return Map<String , String> |
| * @see Properties |
| */ |
| public static Map<String, String> getSubProperties(Iterable<PropertySource<?>> propertySources, String prefix) { |
| |
| Map<String, String> subProperties = new LinkedHashMap<String, String>(); |
| |
| String normalizedPrefix = normalizePrefix(prefix); |
| |
| for (PropertySource<?> source : propertySources) { |
| if (source instanceof EnumerablePropertySource) { |
| for (String name : ((EnumerablePropertySource<?>) source).getPropertyNames()) { |
| if (name.startsWith(normalizedPrefix)) { |
| String subName = name.substring(normalizedPrefix.length()); |
| Object value = source.getProperty(name); |
| subProperties.put(subName, String.valueOf(value)); |
| } |
| } |
| } |
| } |
| |
| return subProperties; |
| |
| } |
| |
| /** |
| * Normalize the prefix |
| * |
| * @param prefix the prefix |
| * @return the prefix |
| */ |
| public static String normalizePrefix(String prefix) { |
| return prefix.endsWith(".") ? prefix : prefix + "."; |
| } |
| |
| } |