hongiiv's - 단맛만 좋아요! :: cron과 같이 동작하는 java 프로그램

유닉스의 cron과 같이 특정한 시간에 어떠한 일을 할 수 있도록해주는 java 프로그램입니다. 이걸 가지고 1분 또는 10분마다 생성된 이미지를 Flickr에 올리면 끝!!

import java.util.*;
import java.text.*;

/**
 * @author Hong Chang Bum (hongiiv@gmail.com)
 *
 * TODO To change the template for this generated type comment go to
 * Window - Preferences - Java - Code Style - Code Templates
 * This application works like cron.
 *
 */

public class SystemBackup {
    public static void main(String[] args) {
       
        //TimeZone을 한국(KST)로 설정한다.
        final int millisPerHout = 60 * 60 * 1000;
        SimpleTimeZone timeZone = new SimpleTimeZone(9 * millisPerHout,"KST");
       
        long lTime1 = 0;
        long lTime2 = 0;
        //long lMtime1 = 0;
        //long lMtime2 = 0;
       
        String strTime = "";
        //String strOldDay = "";
        //String strNewDay = "";
       
        Date ntime;
        SimpleDateFormat dfDate = new SimpleDateFormat("yyyy-MM-dd HH:mm");
        SimpleDateFormat dfTime = new SimpleDateFormat("HH");
        SimpleDateFormat dfDir = new SimpleDateFormat("yyyyMMdd");
        dfDate.setTimeZone(timeZone);
        dfTime.setTimeZone (timeZone);
        dfDir.setTimeZone(timeZone);
       
        //String BACKUP_DIR = "/data01/BackupDaily";
        //String SRC_DIR = "/var/log";
       
        //lMtime1 = 10000L; //10 second
        //lMtime2 = 20000L; //20 second
       
        try{
            if(args.length < 2){
                System.out.println("----------------------------------------------------");
                System.out.println("Set parameter to execute backup");
                System.out.println("Parameter is exection time and interval");
                System.out.println("");
                System.out.println("java SystemBackup time interval");
                System.out.println("");
                System.out.println(" 1) java SystemBackup 10 d");
                System.out.println (" 2) java SystemBackup 22 w");
                System.out.println(" 3) java SystemBackup 10 m");
                System.out.println("----------------------------------------------------");
            }
            else{
                System.out.println("----------------------------------------------------");
                System.out.println("System Backup Start Up!!");
                System.out.println("");
               
                //3600
                if(args[1].equals("d")){
                    lTime1 = 3600000L; //1hour
                    lTime2 =   600000L; //10min
                }else if(args[1].equals("w")){
                    lTime1 = 3600000*12; //12hour
                    lTime2 =   600000L;
                }else if(args[1].equals("m")){
                    lTime1 = 3600000*30; //30hour
                    lTime2 =   600000L;
                                       
                }
               
                //
                while (true) {
                    ntime = new Date();
                    strTime = String.valueOf(dfTime.format(ntime));
                    //debug
                    System.out.println("current time is : " + strTime);
                   
                    //first arguemnt is 24hour format time
                    if(strTime.equals(args[0])){
                        //
                        //Runtime.getRuntime().exec("/data01/backup_script.sh");
                        Runtime.getRuntime().exec("/data01/backup_script_01.sh");
                        System.out.println("----------------------------------------------------");
                        System.out.println("Batch backup successed!!");
                        System.out.println("Batch Date ; " + String.valueOf(dfDate.format(ntime)));
                        System.out.println("----------------------------------------------------");
                        //원하는 시간이면 백업을 수행하고 일/주/월 단위로 정해진 시간을 sleep한다.
                        Thread.sleep(lTime1);
                    }else{
                        System.out.println("sleep start");
                        //System.out.println(lMtime1);
                        //10분간격으로 시간 체크
                        Thread.sleep(lTime2);
                        //Thread.sleep(lMtime1);
                        System.out.println("sleep end");
                    }
                }
               
            }
        }
        catch (Exception err){
            System.out.println("Excepitn Error :[" + err + "]");
        }
        finally{
            System.out.println ("shutdown~~");
            System.out.println("----------------------------------------------------");
        }
       
    }
}

Posted by hongiiv

hongiiv's - 단맛만 좋아요!

cron과 같이 동작하는 java 프로그램

Comments List

Tag Cloud

Categories

Recent Posts

Recent Comments

Recent Trackbacks

Site Stats