| /** |
| * 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.config; |
| |
| import com.google.common.base.Objects; |
| import com.google.common.base.Optional; |
| |
| import com.twitter.distributedlog.DistributedLogConfiguration; |
| |
| import java.io.File; |
| import java.io.FileNotFoundException; |
| import java.util.concurrent.ScheduledExecutorService; |
| import java.util.concurrent.ScheduledThreadPoolExecutor; |
| import java.util.concurrent.TimeUnit; |
| |
| import org.apache.commons.configuration.ConfigurationException; |
| import org.junit.Test; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| import static org.junit.Assert.*; |
| |
| public class TestDynamicConfigurationFactory { |
| static final Logger LOG = LoggerFactory.getLogger(TestDynamicConfigurationFactory.class); |
| |
| private void waitForConfig(DynamicDistributedLogConfiguration conf, int value) throws Exception { |
| while (!Objects.equal(conf.getRetentionPeriodHours(), value)) { |
| Thread.sleep(100); |
| } |
| } |
| |
| private DynamicConfigurationFactory getConfigFactory(File configFile) { |
| String streamConfigPath = configFile.getParent(); |
| ScheduledExecutorService executorService = new ScheduledThreadPoolExecutor(1); |
| ConcurrentBaseConfiguration defaultConf = new ConcurrentConstConfiguration(new DistributedLogConfiguration()); |
| return new DynamicConfigurationFactory(executorService, 100, TimeUnit.MILLISECONDS); |
| } |
| |
| private String getNamePart(File configFile) { |
| String propsFilename = configFile.getName(); |
| return propsFilename.substring(0, propsFilename.indexOf(".conf")); |
| } |
| |
| @Test(timeout = 60000) |
| public void testGetDynamicConfigBasics() throws Exception { |
| PropertiesWriter writer = new PropertiesWriter(); |
| DynamicConfigurationFactory factory = getConfigFactory(writer.getFile()); |
| Optional<DynamicDistributedLogConfiguration> conf = factory.getDynamicConfiguration(writer.getFile().getPath()); |
| assertEquals(DistributedLogConfiguration.BKDL_RETENTION_PERIOD_IN_HOURS_DEFAULT, conf.get().getRetentionPeriodHours()); |
| writer.setProperty(DistributedLogConfiguration.BKDL_RETENTION_PERIOD_IN_HOURS, "1"); |
| writer.save(); |
| waitForConfig(conf.get(), 1); |
| assertEquals(1, conf.get().getRetentionPeriodHours()); |
| } |
| |
| @Test(timeout = 60000) |
| public void testGetDynamicConfigIsSingleton() throws Exception { |
| PropertiesWriter writer = new PropertiesWriter(); |
| DynamicConfigurationFactory factory = getConfigFactory(writer.getFile()); |
| String configPath = writer.getFile().getPath(); |
| Optional<DynamicDistributedLogConfiguration> conf1 = factory.getDynamicConfiguration(configPath); |
| Optional<DynamicDistributedLogConfiguration> conf2 = factory.getDynamicConfiguration(configPath); |
| assertEquals(conf1, conf2); |
| } |
| |
| /** |
| * If the file is missing, get-config should not fail, and the file should be picked up if its added. |
| * If the file is removed externally same should apply. |
| */ |
| @Test(timeout = 60000) |
| public void testMissingConfig() throws Exception { |
| PropertiesWriter writer = new PropertiesWriter(); |
| DynamicConfigurationFactory factory = getConfigFactory(writer.getFile()); |
| Optional<DynamicDistributedLogConfiguration> conf = factory.getDynamicConfiguration(writer.getFile().getPath()); |
| writer.setProperty(DistributedLogConfiguration.BKDL_RETENTION_PERIOD_IN_HOURS, "1"); |
| writer.save(); |
| waitForConfig(conf.get(), 1); |
| File configFile = writer.getFile(); |
| configFile.delete(); |
| Thread.sleep(1000); |
| PropertiesWriter writer2 = new PropertiesWriter(writer.getFile()); |
| writer2.setProperty(DistributedLogConfiguration.BKDL_RETENTION_PERIOD_IN_HOURS, "2"); |
| writer2.save(); |
| waitForConfig(conf.get(), 2); |
| } |
| } |