| /* |
| * 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.common.config; |
| |
| import java.io.File; |
| import java.io.FileOutputStream; |
| import java.util.Properties; |
| import org.slf4j.Logger; |
| import org.slf4j.LoggerFactory; |
| |
| /** |
| * Writer to write properties to files. |
| */ |
| public class PropertiesWriter { |
| static final Logger LOG = LoggerFactory.getLogger(PropertiesWriter.class); |
| |
| final FileOutputStream outputStream; |
| final File configFile; |
| final Properties properties; |
| |
| public PropertiesWriter() throws Exception { |
| this(null); |
| } |
| |
| public PropertiesWriter(File configFile) throws Exception { |
| if (null == configFile) { |
| this.configFile = File.createTempFile("temp", ".conf"); |
| } else { |
| this.configFile = configFile; |
| } |
| this.configFile.deleteOnExit(); |
| this.properties = new Properties(); |
| this.outputStream = new FileOutputStream(this.configFile); |
| } |
| |
| public void setProperty(String key, String value) { |
| properties.setProperty(key, value); |
| } |
| |
| public void removeProperty(String key) { |
| properties.remove(key); |
| } |
| |
| public void save() throws Exception { |
| FileOutputStream outputStream = new FileOutputStream(configFile); |
| properties.store(outputStream, null); |
| configFile.setLastModified(configFile.lastModified() + 1000); |
| LOG.debug("save modified={}", configFile.lastModified()); |
| } |
| |
| public File getFile() { |
| return configFile; |
| } |
| } |