| /* |
| * 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.dubbo.config.spring.beans.factory.config; |
| |
| import java.io.IOException; |
| import java.util.AbstractMap; |
| import java.util.LinkedHashMap; |
| import java.util.Map; |
| import java.util.Set; |
| import java.util.regex.Pattern; |
| |
| import org.springframework.beans.factory.config.YamlProcessor; |
| import org.springframework.core.env.MapPropertySource; |
| import org.springframework.core.env.PropertySource; |
| import org.springframework.core.io.support.EncodedResource; |
| import org.springframework.core.io.support.PropertySourceFactory; |
| |
| import org.yaml.snakeyaml.DumperOptions; |
| import org.yaml.snakeyaml.Yaml; |
| import org.yaml.snakeyaml.constructor.Constructor; |
| import org.yaml.snakeyaml.nodes.MappingNode; |
| import org.yaml.snakeyaml.nodes.Tag; |
| import org.yaml.snakeyaml.parser.ParserException; |
| import org.yaml.snakeyaml.representer.Representer; |
| import org.yaml.snakeyaml.resolver.Resolver; |
| |
| /** |
| * YAML {@link PropertySourceFactory} implementation, some source code is copied Spring Boot |
| * org.springframework.boot.env.YamlPropertySourceLoader , see {@link #createYaml()} and {@link #process()} |
| * |
| * @since 2.6.5 |
| */ |
| public class YamlPropertySourceFactory extends YamlProcessor implements PropertySourceFactory { |
| |
| @Override |
| public PropertySource<?> createPropertySource(String name, EncodedResource resource) throws IOException { |
| setResources(resource.getResource()); |
| return new MapPropertySource(name, process()); |
| } |
| |
| @Override |
| protected Yaml createYaml() { |
| return new Yaml(new Constructor() { |
| @Override |
| protected Map<Object, Object> constructMapping(MappingNode node) { |
| try { |
| return super.constructMapping(node); |
| } catch (IllegalStateException ex) { |
| throw new ParserException("while parsing MappingNode", |
| node.getStartMark(), ex.getMessage(), node.getEndMark()); |
| } |
| } |
| |
| @Override |
| protected Map<Object, Object> createDefaultMap() { |
| final Map<Object, Object> delegate = super.createDefaultMap(); |
| return new AbstractMap<Object, Object>() { |
| @Override |
| public Object put(Object key, Object value) { |
| if (delegate.containsKey(key)) { |
| throw new IllegalStateException("Duplicate key: " + key); |
| } |
| return delegate.put(key, value); |
| } |
| |
| @Override |
| public Set<Entry<Object, Object>> entrySet() { |
| return delegate.entrySet(); |
| } |
| }; |
| } |
| }, new Representer(), |
| new DumperOptions(), new Resolver() { |
| @Override |
| public void addImplicitResolver(Tag tag, Pattern regexp, |
| String first) { |
| if (tag == Tag.TIMESTAMP) { |
| return; |
| } |
| super.addImplicitResolver(tag, regexp, first); |
| } |
| }); |
| } |
| |
| /** |
| * {@link Resolver} that limits {@link Tag#TIMESTAMP} tags. |
| */ |
| private static class LimitedResolver extends Resolver { |
| @Override |
| public void addImplicitResolver(Tag tag, Pattern regexp, String first) { |
| if (tag == Tag.TIMESTAMP) { |
| return; |
| } |
| super.addImplicitResolver(tag, regexp, first); |
| } |
| } |
| |
| public Map<String, Object> process() { |
| final Map<String, Object> result = new LinkedHashMap<String, Object>(); |
| process((properties, map) -> result.putAll(getFlattenedMap(map))); |
| return result; |
| } |
| } |