싱글턴 패턴으로된 로그파일을 생성해주는 클래스이다.
로그파일은 날짜별로 생성되고 각 로그 시간을 함께 찍어준다.
프로그램 시작시 StartDeleteLog / 종료시 StopDeleteLog 한다.
로그파일은 디폴트로 30일이 넘으면 삭제된다.
1: using System;
2: using System.Collections.Generic;
3: using System.IO;
4: using System.Linq;
5: using System.Text;
6: using System.Threading;
7: using System.Threading.Tasks;
8:
9: namespace MyLog
10: {
11: public enum LogType
12: {
13: Info,
14: Exception,
15: Error
16: }
17:
18: public class LogWriter
19: {
20: public delegate void LogWriteHandlerFunc(LogType logType, DateTime logTime, string logMessage);
21: public LogWriteHandlerFunc LogWriteHandler;
22:
23: private static LogWriter instance = new LogWriter();
24: public static LogWriter Instance { get { return instance; } }
25:
26: private object objLogLock = new object();
27:
28: private const string LOG_PATH = @"C:\Log\";
29: private const string LOG_FILENAME = @"log";
30:
31: private Thread threadDeleteLog;
32: private bool bThreadDeleteLogRun = false;
33: private int logDeleteDays = 30;
34:
35: public void StartDeleteLog(int days)
36: {
37: if (!bThreadDeleteLogRun)
38: {
39: logDeleteDays = days;
40: bThreadDeleteLogRun = true;
41: threadDeleteLog = new Thread(new ThreadStart(ThreadDeleteLog));
42: threadDeleteLog.IsBackground = true;
43: threadDeleteLog.Start();
44: }
45: }
46:
47: public void StopDeleteLog()
48: {
49: if (threadDeleteLog != null)
50: {
51: bThreadDeleteLogRun = false;
52: threadDeleteLog.Join();
53: }
54: }
55:
56: private void ThreadDeleteLog()
57: {
58: CheckLogPath(LOG_PATH);
59:
60: DateTime lastTime = DateTime.MinValue;
61:
62: while (bThreadDeleteLogRun)
63: {
64: DateTime now = DateTime.Now;
65: double diff = (now - lastTime).TotalHours;
66: if (diff < 0) diff = 0;
67:
68: if (diff > 24)
69: {
70: try
71: {
72: string[] filepaths = Directory.GetFiles(LOG_PATH, "*.txt");
73: DeleteLogFiles(now, filepaths);
74: }
75: catch (Exception ex)
76: {
77: WriteLog(LogType.Exception, ex.ToString());
78: }
79:
80: lastTime = now;
81: }
82:
83: Thread.Sleep(100);
84: }
85: }
86:
87: private void DeleteLogFiles(DateTime now, string[] filepaths)
88: {
89: foreach (string filepath in filepaths)
90: {
91: try
92: {
93: DateTime date = File.GetCreationTime(filepath);
94: if ((now - date).TotalDays > logDeleteDays)
95: {
96: File.Delete(filepath);
97: }
98: }
99: catch (Exception ex)
100: {
101: WriteLog(LogType.Exception, ex.ToString());
102: }
103: }
104: }
105:
106: public void WriteLog(LogType logType, string log)
107: {
108: try
109: {
110: lock (objLogLock)
111: {
112: Console.WriteLine(log);
113:
114: string filepath = LOG_PATH;
115:
116: CheckLogPath(filepath);
117:
118: DateTime dateTime = DateTime.Now;
119: string strDate = dateTime.ToString("yyyyMMdd");
120: string strDateTime = dateTime.ToString("yyyy-MM-dd HH:mm:ss.fff");
121:
122: filepath = string.Format("{0}{1}_{2}.txt", filepath, LOG_FILENAME, strDate);
123: string logMessage = string.Format("{0} [{1}] {2}", strDateTime, logType, log);
124:
125: using (StreamWriter sw = File.AppendText(filepath))
126: {
127: sw.WriteLine(logMessage);
128: sw.WriteLine("---------------------------------------------------------------------------------------\r");
129: sw.Flush();
130: }
131:
132: if (LogWriteHandler != null) LogWriteHandler(logType, dateTime, log);
133: }
134: }
135: catch (Exception ex)
136: {
137: Console.WriteLine(ex.ToString());
138: }
139: }
140:
141: private void CheckLogPath(string path)
142: {
143: try
144: {
145: if (!Directory.Exists(path))
146: Directory.CreateDirectory(path);
147: }
148: catch (Exception ex)
149: {
150: Console.WriteLine(ex.ToString());
151: }
152: }
153: }
154: }
155:
private LogWriter logWriter = LogWriter.Instance;
...
logWriter.StartDeleteLog(30);
...
logWriter.WriteLog(LogType.Info, "로그 시작...");
...
logWriter.StopDeleteLog();
