| /* |
| * 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.common.config; |
| |
| import org.apache.dubbo.common.logger.Logger; |
| import org.apache.dubbo.common.logger.LoggerFactory; |
| import org.apache.dubbo.common.utils.ArrayUtils; |
| |
| import java.util.Arrays; |
| import java.util.List; |
| import java.util.concurrent.CopyOnWriteArrayList; |
| |
| /** |
| * This is an abstraction specially customized for the sequence Dubbo retrieves properties. |
| */ |
| public class CompositeConfiguration implements Configuration { |
| private final Logger logger = LoggerFactory.getLogger(CompositeConfiguration.class); |
| |
| /** |
| * List holding all the configuration |
| */ |
| private final List<Configuration> configList = new CopyOnWriteArrayList<>(); |
| |
| //FIXME, consider change configList to SortedMap to replace this boolean status. |
| private boolean dynamicIncluded; |
| |
| public CompositeConfiguration() { |
| } |
| |
| public CompositeConfiguration(Configuration... configurations) { |
| if (ArrayUtils.isNotEmpty(configurations)) { |
| Arrays.stream(configurations).filter(config -> !configList.contains(config)).forEach(configList::add); |
| } |
| } |
| |
| //FIXME, consider changing configList to SortedMap to replace this boolean status. |
| public boolean isDynamicIncluded() { |
| return dynamicIncluded; |
| } |
| |
| public void setDynamicIncluded(boolean dynamicIncluded) { |
| this.dynamicIncluded = dynamicIncluded; |
| } |
| |
| public void addConfiguration(Configuration configuration) { |
| if (configList.contains(configuration)) { |
| return; |
| } |
| this.configList.add(configuration); |
| } |
| |
| public void addConfigurationFirst(Configuration configuration) { |
| this.addConfiguration(0, configuration); |
| } |
| |
| public void addConfiguration(int pos, Configuration configuration) { |
| this.configList.add(pos, configuration); |
| } |
| |
| @Override |
| public Object getInternalProperty(String key) { |
| for (Configuration config : configList) { |
| try { |
| Object value = config.getProperty(key); |
| if (!ConfigurationUtils.isEmptyValue(value)) { |
| return value; |
| } |
| } catch (Exception e) { |
| logger.error("Error when trying to get value for key " + key + " from " + config + ", " + |
| "will continue to try the next one."); |
| } |
| } |
| return null; |
| } |
| |
| } |