com.bluescopesteel.foldermonitor.config.ConfigManager.java Source code

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Here is the source code for com.bluescopesteel.foldermonitor.config.ConfigManager.java

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/*
 * Copyright 2014 BlueScope Steel.
 *
 * Licensed 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.bluescopesteel.foldermonitor.config;

import java.io.IOException;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.apache.commons.configuration.CompositeConfiguration;
import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.configuration.SystemConfiguration;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

/**
 *
 * @author Mitchell Just (Mitchell.Just@BlueScopeSteel.com)
 */
public class ConfigManager {

    private static final Log log = LogFactory.getLog(ConfigManager.class);

    private static CompositeConfiguration config;

    public synchronized static Configuration getConfig() {
        if (config == null) {
            try {
                log.info("Creating new configuration object");
                config = new CompositeConfiguration();
                config.addConfiguration(new PropertiesConfiguration("default.properties"));
                try {
                    config.addConfiguration(new PropertiesConfiguration("config.properties"));
                } catch (ConfigurationException ex) {
                    log.info("No installed configuration file found");
                }
                config.addConfiguration(new SystemConfiguration());
            } catch (ConfigurationException ex) {
                log.error("Error creating configuration", ex);
            }
        }

        return config;
    }

}