package com.hitachi.hscms.util.tools;/** * This file is part of HSCMS project which started by ossl lab of Hitachi(China) Research and Development Corp. * HSCMS dedicate to give a whole configuration environment for xp developing process,including auto integration etc. functions. * This class is a tool to read and write log file * @author Li linlin * @date 2006-08-10 */import java.io.BufferedReader;import java.io.BufferedWriter;import java.io.File;import java.io.FileNotFoundException;import java.io.FileReader;import java.io.FileWriter;import java.io.IOException;import java.sql.SQLException;
import org.apache.log4j.Logger;
import com.hitachi.hscms.Messages;
public class LogFileOperator { private static Logger logger = Logger.getLogger(LogFileOperator.class); public static final String logFilePath = Messages.getInstance().getString("LogFileRoot"); /** * Fuction: To read log file of a pointed task * @Param: String , task name * @return: String, file content * @throws Exception: has catched IOException and FileNotFoundException * @throws SQLException: null */ public static String readTaskLog(String taskName) { String result=""; logger.info("start read"); File file = new File(logFilePath+File.separator+taskName+".log"); logger.info(file.getAbsolutePath()); if(file.exists()) { logger.info("file exists"); try { FileReader fr = new FileReader(file); BufferedReader br = new BufferedReader(fr); String tmp; try { while((tmp =br.readLine())!=null) { logger.info("has read "); result += (tmp+System.getProperty("line.separator")); } br.close(); fr.close(); } catch (IOException e) { logger.error("read file "+file.getAbsolutePath()+" error"); e.printStackTrace(); } } catch (FileNotFoundException e) { logger.error("File " + file.getAbsolutePath()+" not found"); e.printStackTrace(); } } return result; } /** * Fuction: To write infomation of a pointed task into log file ,each task has a log file name named by taskname * and each infomation will be added as a line * @Param: String , task name ;String, the information to write to the log file * @return: boolean, if success,return true * @throws Exception: has catched IOException and FileNotFoundException * @throws SQLException: null */ public static boolean writeTaskLog(String info,String taskName) { File file = new File(logFilePath); if(!file.exists()) file.mkdir(); logger.info("Start write"); file = new File(logFilePath+File.separator+taskName+".log"); try { FileWriter fw= new FileWriter(file,true); BufferedWriter br = new BufferedWriter(fw); br.write(info); logger.info("Write string "+info + "into file" +file.getAbsolutePath()); br.newLine(); br.close(); fw.close(); } catch (IOException e) { e.printStackTrace(); return false; } logger.info("End write"); return true; } /** * Fuction: Delete all the logs when the system restart * @Param: null * @return: null * @throws Exception: null * @throws SQLException: null */ public static void clearLogs() { File file = new File(logFilePath); File[] logs = file.listFiles(); if(logs!=null && logs.length>0) { for(int i=0;i<logs.length;i++) { logs[i].delete(); } } } /** * Fuction: Delete the log of the task when the system restart * @Param: null * @return: null * @throws Exception: null * @throws SQLException: null */ public static void clearLogs(String taskName) { File file = new File(logFilePath+File.separator+taskName+".log"); if(file.exists()) file.delete(); } public static boolean editTaskLog(String oldName,String newName) { File file = new File(logFilePath+File.separator+oldName+".log"); if(file.exists()){ return file.renameTo(new File((logFilePath+File.separator+newName+".log"))); } return false; } public static boolean deleteTaskLog(String name) { File file = new File(logFilePath+File.separator+name+".log"); if(file.exists()){ return file.delete(); } return false; }}
