Java tutorial
/* * Data HUb Service (DHuS) - For Space data distribution. * Copyright (C) 2013,2014,2015,2016 European Space Agency (ESA) * Copyright (C) 2013,2014,2015,2016 GAEL Systems * Copyright (C) 2013,2014,2015,2016 Serco Spa * * This file is part of DHuS software sources. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU Affero General Public License as * published by the Free Software Foundation, either version 3 of the * License, or (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU Affero General Public License for more details. * * You should have received a copy of the GNU Affero General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ package eu.serco.dhus.config; import java.util.Properties; import org.apache.commons.codec.binary.Base64; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; public class ConfigurationManager { private static Properties configFile; private static Log logger = LogFactory.getLog(PropertiesLoader.class); public static String EXTERNAL_DHUS_HOST = "external_dhus_host"; public static String EXTERNAL_DHUS_USERNAME = "external_dhus_username"; public static String EXTERNAL_DHUS_PWD = "external_dhus_password"; private ConfigurationManager() { } private static synchronized Properties getPropertiesInstance() { if (configFile == null) configFile = PropertiesLoader.loadProperties("../etc/conf/ExternalDHuS.properties"); return configFile; } public static String getExternalDHuSHost() { String prop = ""; try { prop = getPropertiesInstance().getProperty(EXTERNAL_DHUS_HOST); } catch (Exception e) { logger.error("Error retrieving property " + EXTERNAL_DHUS_HOST); e.printStackTrace(); } return prop; } private static String getExternalDHuSUsername() { String prop = ""; try { prop = getPropertiesInstance().getProperty(EXTERNAL_DHUS_USERNAME); } catch (Exception e) { logger.error("Error retrieving property " + EXTERNAL_DHUS_USERNAME); e.printStackTrace(); } return prop; } private static String getExternalDHuSPassword() { String prop = ""; try { prop = getPropertiesInstance().getProperty(EXTERNAL_DHUS_PWD); } catch (Exception e) { logger.error("Error retrieving property " + EXTERNAL_DHUS_PWD); e.printStackTrace(); } return prop; } public static String getHashedConnectionString() { String hashedString = ""; try { String unhashedString = getExternalDHuSUsername() + ":" + getExternalDHuSPassword(); Base64 base64 = new Base64(); hashedString = (String) base64.encodeToString(unhashedString.getBytes()); } catch (Exception e) { logger.error("Error retrieving Hashed Connection String"); e.printStackTrace(); } return hashedString; } }