| /** |
| * 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.twitter.distributedlog.util; |
| |
| import com.twitter.distributedlog.DistributedLogConfiguration; |
| import com.twitter.distributedlog.config.ConcurrentConstConfiguration; |
| import com.twitter.distributedlog.config.DynamicDistributedLogConfiguration; |
| import org.apache.commons.configuration.Configuration; |
| |
| import java.util.Iterator; |
| |
| public class ConfUtils { |
| |
| /** |
| * Load configurations with prefixed <i>section</i> from source configuration <i>srcConf</i> into |
| * target configuration <i>targetConf</i>. |
| * |
| * @param targetConf |
| * Target Configuration |
| * @param srcConf |
| * Source Configuration |
| * @param section |
| * Section Key |
| */ |
| public static void loadConfiguration(Configuration targetConf, Configuration srcConf, String section) { |
| Iterator confKeys = srcConf.getKeys(); |
| while (confKeys.hasNext()) { |
| Object keyObject = confKeys.next(); |
| if (!(keyObject instanceof String)) { |
| continue; |
| } |
| String key = (String) keyObject; |
| if (key.startsWith(section)) { |
| targetConf.setProperty(key.substring(section.length()), srcConf.getProperty(key)); |
| } |
| } |
| } |
| |
| /** |
| * Create const dynamic configuration based on distributedlog configuration. |
| * |
| * @param conf |
| * static distributedlog configuration. |
| * @return dynamic configuration |
| */ |
| public static DynamicDistributedLogConfiguration getConstDynConf(DistributedLogConfiguration conf) { |
| ConcurrentConstConfiguration constConf = new ConcurrentConstConfiguration(conf); |
| return new DynamicDistributedLogConfiguration(constConf); |
| } |
| } |