com.google.code.fqueue.util.Config.java Source code

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Here is the source code for com.google.code.fqueue.util.Config.java

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/*
 *  Copyright 2011 sunli [sunli1223@gmail.com][weibo.com@sunli1223]
 *
 *  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.google.code.fqueue.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.Enumeration;
import java.util.Map;
import java.util.Properties;
import java.util.concurrent.ConcurrentHashMap;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

import com.google.code.fqueue.exception.ConfigException;

/**
 * @author sunli
 * @date 2010-8-12
 * @version $Id$
 */
public class Config {
    private final static Log log = LogFactory.getLog(Config.class);
    // map ??
    private static Map<String, String> setting = new ConcurrentHashMap<String, String>();
    // ??
    static {
        iniSetting();
    }

    public Config() {

    }

    /**
     * ?? ?config/config.propertiesconfig.properties
     * 
     * @throws FileNotFoundException
     */
    public static synchronized void iniSetting() {
        File file;
        file = new File("config.properties");
        if (!file.exists()) {
            iniSetting("config/config.properties");
        } else {
            iniSetting("config.properties");
        }
    }

    /**
     * ??
     * 
     * @param path
     *            
     * @throws FileNotFoundException
     */
    public static synchronized void iniSetting(String path) {
        File file;
        file = new File(path);
        FileInputStream in = null;
        try {
            in = new FileInputStream(file);
            Properties p = new Properties();
            p.load(in);
            // ???Map
            Enumeration<?> item = p.propertyNames();
            while (item.hasMoreElements()) {
                String key = (String) item.nextElement();
                setting.put(key, p.getProperty(key));
            }
            in.close();
        } catch (FileNotFoundException e) {
            log.error("config file not found at" + file.getAbsolutePath());
            throw new ConfigException("FileNotFoundException", e);
        } catch (IOException e) {
            log.error("config file not found at" + file.getAbsolutePath());
            throw new ConfigException("IOException", e);
        } catch (Exception e) {
            throw new ConfigException("Exception", e);
        }
    }

    public static void reload() {
        try {
            iniSetting();
        } catch (ConfigException e) {
            throw new ConfigException(e.getMessage(), e);
        }
    }

    /**
     * ?????
     * 
     * @param key
     *            
     * @return 
     */
    public static String getSetting(String key) {
        return setting.get(key);
    }

    /**
     * ??
     * 
     * @param key
     * @param value
     */
    public static void setSetting(String key, String value) {
        setting.put(key, value);
    }

    public static int getInt(String key) {
        return Integer.parseInt(setting.get(key));
    }
}