| /** |
| * 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.distributedlog.service.config; |
| |
| import com.google.common.base.Optional; |
| import com.google.common.collect.Lists; |
| import org.apache.distributedlog.DistributedLogConfiguration; |
| import org.apache.distributedlog.config.ConcurrentConstConfiguration; |
| import org.apache.distributedlog.config.ConfigurationSubscription; |
| import org.apache.distributedlog.config.DynamicDistributedLogConfiguration; |
| import org.apache.distributedlog.config.FileConfigurationBuilder; |
| import org.apache.distributedlog.config.PropertiesConfigurationBuilder; |
| import java.io.File; |
| import java.net.MalformedURLException; |
| import java.util.List; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.TimeUnit; |
| import org.apache.commons.configuration.ConfigurationException; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * For all streams return the same dynamic config based on configFile. |
| */ |
| public class DefaultStreamConfigProvider implements StreamConfigProvider { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(DefaultStreamConfigProvider.class); |
| |
| private final Optional<DynamicDistributedLogConfiguration> dynConf; |
| private final ConfigurationSubscription confSub; |
| |
| public DefaultStreamConfigProvider(String configFilePath, |
| ScheduledExecutorService executorService, |
| int reloadPeriod, |
| TimeUnit reloadUnit) |
| throws ConfigurationException { |
| try { |
| File configFile = new File(configFilePath); |
| FileConfigurationBuilder properties = |
| new PropertiesConfigurationBuilder(configFile.toURI().toURL()); |
| ConcurrentConstConfiguration defaultConf = |
| new ConcurrentConstConfiguration(new DistributedLogConfiguration()); |
| DynamicDistributedLogConfiguration conf = |
| new DynamicDistributedLogConfiguration(defaultConf); |
| List<FileConfigurationBuilder> fileConfigBuilders = Lists.newArrayList(properties); |
| confSub = new ConfigurationSubscription( |
| conf, fileConfigBuilders, executorService, reloadPeriod, reloadUnit); |
| this.dynConf = Optional.of(conf); |
| } catch (MalformedURLException ex) { |
| throw new ConfigurationException(ex); |
| } |
| } |
| |
| @Override |
| public Optional<DynamicDistributedLogConfiguration> getDynamicStreamConfig(String streamName) { |
| return dynConf; |
| } |
| } |