occi.libvirt.LibvirtConfig.java Source code

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Here is the source code for occi.libvirt.LibvirtConfig.java

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/**
 * Copyright (C) 2010-2011 Sebastian Heckmann, Sebastian Laag
 *
 * Contact Email: <sebastian.heckmann@udo.edu>, <sebastian.laag@udo.edu>
 *
 * Licensed under the GNU LESSER GENERAL PUBLIC LICENSE, Version 3.0 (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.gnu.org/licenses/lgpl-3.0.txt
 *
 * 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 occi.libvirt;

import java.io.BufferedInputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Properties;

import org.apache.commons.configuration.Configuration;
import org.apache.commons.configuration.XMLConfiguration;

/**
 * OcciConfig singleton class. It saves all occi properties.
 * 
 * @author Sebastian Laag
 * @author Sebastian Heckmann
 * 
 */
public class LibvirtConfig extends XMLConfiguration {
    private static final long serialVersionUID = 1L;
    /**
     * Instance of OcciConfig
     */
    private static LibvirtConfig instance = null;
    /**
     * Configuration for all occi properties
     */
    public Configuration config;

    public static LibvirtConfig getInstance() {
        if (instance == null) {
            // create LibvirtConfig instance
            instance = new LibvirtConfig();
        }
        return instance;
    }

    @Override
    public String getProperty(String key) {
        String value = null;
        Properties properties = new Properties();
        try {
            BufferedInputStream stream = null;
            if (new File("conf/libvirt.properties").exists())
                stream = new BufferedInputStream(new FileInputStream("conf/libvirt.properties"));
            else
                stream = new BufferedInputStream(new FileInputStream("src/main/resources/conf/libvirt.properties"));
            properties.load(stream);
            stream.close();
            value = properties.getProperty(key);
        } catch (IOException e) {
            e.printStackTrace();
        }
        System.out.println("========= key=" + key + ", value=" + value);
        return value;
    }

    public static void main(String[] args) {
        // test the libvirt config
        LibvirtConfig.getInstance().getProperty("libvirt.xmlDirectory");
    }
}