ECommService/CommService/LogFile.cs

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.IO;
using System.Threading;
using System.Globalization;
using System.Timers;

namespace CommService
{
    /*
    *类名称：LogFile
    *创建人：韩荣伟
    *创建时间：2010-10-30
    *功能描述：log文件处理类
    */
    class LogFile
    {
        private string sPath;
        //private static Mutex mut = new Mutex();
        //private static Mutex mutException = new Mutex();

        //private static LogFile inst = null;
        private  Mutex mut = new Mutex();
        private  Mutex mutException = new Mutex();

        //private  LogFile inst = null;
        private string log;
        private DateTime dtNow;
        private bool logOn;
        private long maxSize;
        private string fname;

        private string sExceptionPath;
        private string sExceptionFName;

        public static int LOGLVL_DEBUG = -1;
        public static int LOGLVL_NORMAL = 0;
        public static int LOGLVL_ERROR = 1;
        private int nLogLvl_Min = LOGLVL_NORMAL;
        public string sRootPath;

        Log logWrite= new Log();
        /*
         *方法名称：instance
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：
         *返回描述：LogFile，LogFile实例
         *功能描述：生成LogFile实例
         */
        //public static LogFile instance()
        //{
        //    if (inst == null)
        //    {
        //        inst = new LogFile();
        //    }
        //    return inst;
        //}
        /*
         *方法名称：SetLogOn
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：bool on log开关，true 开，false 关 
         *返回描述：void
         *功能描述：设置log开关 
         */
        public void SetLogMinLevel(string sLevelName)
        {
            if (sLevelName.CompareTo("DEBUG") == 0)
            {
                nLogLvl_Min = LOGLVL_DEBUG;
            }
            else if (sLevelName.CompareTo("NORMAL") == 0)
            {
                nLogLvl_Min = LOGLVL_NORMAL;
            }
            else if (sLevelName.CompareTo("ERROR") == 0)
            {
                nLogLvl_Min = LOGLVL_ERROR;
            }
            else
            {
                nLogLvl_Min = LOGLVL_NORMAL;
            }
        }
        /*
         *方法名称：CheckFSize
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：void 
         *返回描述：void
         *功能描述：设置log开关 
         */
        private void CheckFSize(int nLogLevel)
        {
            string sFullPath = "";
            string sPrefix = "";
            string sFName = "";

            if (nLogLevel == LOGLVL_NORMAL || nLogLevel == LOGLVL_DEBUG)
            {
                sFullPath = sPath;
                sPrefix = "logbackup";
                sFName = fname;
            }
            else if (nLogLevel == LOGLVL_ERROR)
            {
                sFullPath = sExceptionPath;
                sPrefix = "errbackup";
                sFName = sExceptionFName;
            }

            //if (nLogLevel == LOGLVL_NORMAL)
            //{
            FileInfo fi = new FileInfo(sFullPath);
            if (fi.Exists && fi.Length >= maxSize)
            {
                string pathName = Path.GetDirectoryName(sFullPath);
                string newFName = sFName;
                DateTime dtNow = DateTime.Now;

                newFName = sPrefix + dtNow.ToString("_yyyyMMdd_HHmmss_fff", CultureInfo.InvariantCulture) + ".txt";
                try
                {
                    fi.MoveTo(pathName + "\\" + newFName);
                }
                catch (Exception e1)
                {
                    //fi.CopyTo(pathName + "\\" + newFName);

                    //if ((nLogLevel == LOGLVL_NORMAL || nLogLevel == LOGLVL_DEBUG))
                    //{
                    //    sPath = pathName + "\\log" + dtNow.ToString("_yyyyMMdd_HHmmss_fff", CultureInfo.InvariantCulture) + ".txt";
                    //}
                    //else if (nLogLevel == LOGLVL_ERROR)
                    //{
                    //    sExceptionPath = pathName + "\\err" + dtNow.ToString("_yyyyMMdd_HHmmss_fff", CultureInfo.InvariantCulture) + ".txt";
                    //}
                }
            }
        }
        /*
         *方法名称：init
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：string logPath 路径, string logFName文件名 
         *返回描述：void
         *功能描述：初始化路径文件名 
         */
        public void init(string sAPPBase,string slogPath, string slogFName, string sExceptionPath, string sExceptionFName, long maxSizeInByte)
        {
            DirectoryInfo di = new DirectoryInfo(sAPPBase + slogPath);
            if (di.Exists == false)
            {
                di.Create();
            }
            sRootPath = sAPPBase + slogPath;
            sPath = sRootPath + "\\" + slogFName;
            logOn = true;
            maxSize = maxSizeInByte;
            fname = slogFName;

            di = new DirectoryInfo(sAPPBase + slogPath+sExceptionPath);
            if (di.Exists == false)
            {
                di.Create();
            }
            this.sExceptionPath = sAPPBase + slogPath + sExceptionPath + "\\"+ sExceptionFName;
            this.sExceptionFName = sExceptionFName;
        }
        /*
         *方法名称：write
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：string logstr 日志字符串 
         *返回描述：void
         *功能描述：写入日志字符串
         */
        public void write(string logstr, int nLogLevel)
        {
            if (nLogLevel < nLogLvl_Min ||logOn == false)
                return;

            //lock
            try
            {
                mut.WaitOne();
                {
                    CheckFSize(nLogLevel);

                    //format
                    dtNow = DateTime.Now;
                    log = dtNow.ToString("yyyy-MM-dd HH:mm:ss ", CultureInfo.InvariantCulture);
                    log += logstr + "\r\n";
                    //open file  //write //close file
                    try
                    {
                        //using (FileStream fs
                        //    = File.Open((nLogLevel == LOGLVL_ERROR ? sExceptionPath : sPath),
                        //    FileMode.OpenOrCreate | FileMode.Append))
                        //{
                        //    Byte[] info = new UTF8Encoding(true).GetBytes(log);
                        //    // Add some information to the file.
                        //    fs.Write(info, 0, info.Length);
                        //    fs.Close();
                        //}
                        Msg msg = new Msg(log, nLogLevel == LOGLVL_ERROR ? sExceptionPath : sPath);
                        logWrite.Write(msg);
                    }
                    catch (Exception e1)
                    {

                    }
                }
                mut.ReleaseMutex();
            }
            catch (Exception ex)
            {

            }
            //unlock
            
        }
        /*
         *方法名称：writeHexString
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：string logstr 日志字符串 
         *          string toHex 待转16进制码的字符串
         *返回描述：void
         *功能描述：写入日志字符串，和转16进制码的字符串
         */
        public void writeHexString(string logstr, byte[] toHex, int nLogLevel)
        {
            if (nLogLevel < nLogLvl_Min || logOn == false)
                return;


            //lock
            try
            {
                mut.WaitOne();
                {
                    CheckFSize(nLogLevel);

                    //format
                    dtNow = DateTime.Now;
                    log = dtNow.ToString("yyyy-MM-dd HH:mm:ss ", CultureInfo.InvariantCulture);
                    log += logstr;// +"\r\n";
                    //open file  //write //close file
                    //FileInfo fi
                    try
                    {
                        //using (FileStream fs
                        //    = File.Open((nLogLevel == LOGLVL_ERROR ? sExceptionPath : sPath),
                        //    FileMode.OpenOrCreate | FileMode.Append))
                        //{
                            string Hexstr = BitConverter.ToString(toHex).Replace("-", " ");

                        //    Byte[] info = new UTF8Encoding(true).GetBytes(log + Hexstr + "\r\n");
                        //    //// Add some information to the file.
                        //    fs.Write(info, 0, info.Length);
                        //    fs.Close();
                        //}
                        Msg msg = new Msg(log + Hexstr, nLogLevel == LOGLVL_ERROR ? sExceptionPath : sPath);
                        logWrite.Write(msg);
                    }
                    catch (Exception e1)
                    {

                    }
                }
                mut.ReleaseMutex();
            }
            catch (Exception ex)
            {

            }

        }
        /*
         *方法名称：DeleteAtFolder
         *创建人：韩荣伟
         *创建时间：2010-10-30
         *参数描述：string dir 目录, string sFlag 文件前缀
         *返回描述：void
         *功能描述：删除过期文件
         */

        public void DeleteAtFolder(string dir, string sFlag)
        {
            try
            {
                if (Directory.Exists(dir)) //如果存在这个文件夹删除之
                {
                    string sBase = sFlag + "_000000_000.txt";
                    foreach (string d in Directory.GetFileSystemEntries(dir))
                    {
                        if (File.Exists(d))
                        {
                            string sFileName = Path.GetFileName(d);
                            if (sFileName.IndexOf("backup") > 0)
                            {
                                if (sFileName.Remove(0, 10).CompareTo(sBase) < 0)
                                {
                                    File.Delete(d); //直接删除其中的文件
                                }
                            }
                        }
                        else
                            DeleteAtFolder(d, sFlag); //递归删除子文件夹
                    }
                }
            }
            catch (Exception e1)
            { 

            }
        }

    }
}