NLog 轮换和清理日志文件 [英] NLog rotate and cleanup logfiles

问题描述

在我的公司内，我们正在使用 NLog.我们遇到了大量日志文件的问题.我们想要做的是按天归档文件并保留最多 x 数量的文件.让我们说 7. 我已经在互联网上阅读了几个关于此的主题，它们主要指向我修改我的 NLog.config 文件的相同方向.但是，它似乎不愿意像我期望的那样旋转文件.目前，所需文件夹中没有存档任何内容.但所有文件都以以下格式保存在logs"目录中；

Within my company we're working with NLog. We're experiencing issues with large amount of log files. What we want to do is archive files by day and keep a maximum of an x amount of files. Lets say 7. I've read several topics on the internet regarding this and they're mostly pointing me in the same direction of modifying my NLog.config file. However it doesn't seem to be willing to rotate the files as I expect it to do. Currently nothing is being archived in the desired folder. But all files are saved in the 'logs'-directory in the following format;

Log.info.2011-11-07.txt

在我的应用程序中，我有一个目录日志".在该文件夹中保存所有日志文件.我还有一个名为archives"的文件夹，我想在其中存档所有旧文件.在该目录中达到最大日志文件数后，应自动清除它们.这可能吗?我当前的 NLog.config 文件如下所示；

Within my application i've got an directory 'logs'. Inside that folder all logfiles are saved. I've also got an folder called 'archives' in which I want to archive all older files. After the maximum number of log files is reached inside that directory they automatically should be cleaned. Is this possible? My current NLog.config file looks like below;

<?xml version="1.0" encoding="utf-8" ?>
<nlog xmlns="http://www.nlog-project.org/schemas/NLog.xsd"
      xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
      autoReload="true"
      throwExceptions="true"
      internalLogFile="C:
log-internal.txt"
      internalLogLevel="Error">

  <extensions>
    <add assembly="NLog.Extended" />
  </extensions>

  <targets>
    <!-- will move file to archive once it reaches 1MB. Files are archived by day, with a maximum of three files. ConcurrentWrites is set to false, 
            change to true if multiple processes will be writing to the logfile-->
    <target name="file" xsi:type="File" fileName="${basedir}/logs/Log.info.${shortdate}.txt" 
            layout="${longdate} ${callsite} ${level}: ${message} ${exception:format=Message,StackTrace} ${stacktrace}"
            archiveFileName="${basedir}/logs/archives/log.info.${shortdate}.txt"
            archiveAboveSize="1048576"
            archiveEvery="Day"
            archiveNumbering = "Rolling"
            maxArchiveFiles="7"
            concurrentWrites="false"
            />
    <target name="file-default" xsi:type="File" fileName="${basedir}/log_default.txt"/>
    <target name="file-debug" xsi:type="File" fileName="${basedir}/log_debug.txt"/>
    <target name="file-testclass" xsi:type="File" fileName="${basedir}/log_testclass.txt"/>
    <target name="mail" xsi:type="Mail" 
            subject="${level} - ${aspnet-request:serverVariabele=PATH_INFO} | ${callsite:includeSourcePath=true}" 
            to="[e-mail]" 
            smtpServer="mail.server.com" 
            from="[e-mail]"/>
    <target xsi:type="Database" 
            name="TestDatabaseLogging" 
            connectionString="Data Source=123.123.123.123;Initial Catalog=NLog_Test;User ID=su_Nlog;Password=test123" 
            dbDatabase="NLog_Test">
      <commandText>
        insert into INNO_LOG ([createDate], [Origin], [LogLevel], [Message], [Exception], [StackTrace]) values (@createDate, @origin, @logLevel, @message, @exception, @stackTrace)
      </commandText>
      <parameter name="@createDate" layout="${date}"/>
      <parameter name="@origin" layout="${callsite}"/>
      <parameter name="@logLevel" layout="${level}"/>
      <parameter name="@message" layout="${message}"/>
      <parameter name="@exception" layout="${exception:format=Message,StackTrace}"/>
      <parameter name="@stackTrace" layout="${stacktrace}"/>
    </target>

  </targets>

  <rules>
    <logger name="*" minlevel="Fatal" writeTo="mail" />
    <logger name="*" minlevel="Error" writeTo="TestDatabaseLogging" />
    <logger name="*" minlevel="Debug" writeTo="file-debug" />
    <logger name="*" minlevel="Info" writeTo="file" />
    <!--Log to specific files for specific classes.-->
    <logger name="_Default" minlevel="Trace" writeTo="file-default" />
    <logger name="TestClass" minlevel="Trace" writeTo="file-testclass" />
  </rules>
</nlog>

ckellers 回答后的最终(剪下)解决方案.

The final (snipped) solution after ckellers answer.

<target name="file"
            xsi:type="File"
            fileName="${basedir}/logs/Log.${level}.current.txt"
            layout="${longdate} ${callsite} ${level}: ${message} ${exception:format=Message,StackTrace} ${stacktrace}"
            archiveFileName="${basedir}/logs/archives/log.error.${shortdate}.{#}.txt"
            archiveAboveSize="5242880"
            archiveEvery="Day"
            archiveNumbering = "Rolling"
            maxArchiveFiles="3" />

推荐答案

问题似乎出在文件名定义中的 shortdate.请参阅我对这个问题的回答:在 x 天后删除日志文件

It looks like the problem is the shortdate in your filename definition. See my answer at this question: Delete log files after x days

你必须定义没有日期部分的文件名

You have to define the filename without the date part

fileName="${basedir}/logs/Log.info.txt

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