[3009] Log

NLog

1. 설치 - Nuget을 통해 NLog를 검색하여 추가

2. 설정 - config 파일에 아래 코드 추가(<configuration> ~ </configuration> 사이에 추가

   • 핸들러 추가 : <configSections><section name="nlog" type="NLog.Config.ConfigSectionHandler, NLog" /></configSections>

   • 설정 추가 :

   • <nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" autoReload="true" throwExceptions="false">

   • <variable name="logDirectory" value="D:\SunLogs\NetLog\SunGold" />

   • <targets>

   • <target xsi:type="File" name="default" keepFileOpen="false" fileName="${logDirectory}\log_${shortdate}.log" layout="${longdate} | ${uppercase:${level}} | ${callsite} | ${message}" />

   • <target xsi:type="Debugger" name="debugger" layout="${longdate} | ${uppercase:${level}} | ${callsite} | ${message}" />

   • <target xsi:type="File" name="exception" fileName="${logDirectory}\log_${level}_${shortdate}.log" layout=" ----------------------------- ${uppercase:${level}} [${longdate}] -----------------------------${newline} &gt; Call Site : ${callsite}${newline} &gt; Exception Type : ${exception:format=Type}${newline} &gt; Exception Message : ${exception:format=Message}${newline} &gt; Stack Trace : ${exception:format=StackTrace}${newline} &gt; Additional Info : ${message}${newline} " />

   • </targets>

   • <rules>

   • <logger name="logger" minlevel="Trace" writeTo="default" />

   • <logger name="logger" minlevel="Debug" writeTo="Debugger" />

   • <logger name="exceptionLogger" minlevel="Error" writeTo="exception" />

   • </rules>

   • </nlog>

3. 정보

   • 로그 레벨

     • Trace - very detailed logs, which may include high-volume information such as protocol payloads. This log level is typically only enabled during development

     • Debug - debugging information, less detailed than trace, typically not enabled in production environment.

     • Info - information messages, which are normally enabled in production environment

     • Warn - warning messages, typically for non-critical issues, which can be recovered or which are temporary failures

     • Error - error messages - most of the time these are Exceptions

     • Fatal - very serious errors!

4. 사용Tip

   • 로그 인스턴스 : private Logger _logger = LogManager.GetLogger("logger");

   • private static Logger logger = LogManager.GetCurrentClassLogger(); << 이건 의미가???

   • 로깅코드

     • logger.Trace("Sample trace message");

     • logger.Debug("Sample debug message");

     • logger.Info("Sample informational message");

     • logger.Warn("Sample warning message");

     • logger.Error("Sample error message");

     • logger.Fatal("Sample fatal error message");

     • logger.Log(LogLevel.Info, "Sample informational message");

Log4Net

1. 설치 :

2. 설정

   • Dapper가 자동으로 Connection Open/Close 관리합니다.

3. 사용Tip