CODEWITHSUNDEEP
c#logginglog4net
Nim
Nim

Reputation: 376

Log4Net Class Logger level per Appender-ref

I am trying to separate out a Performance Logger into a separate log using Log4Net...

I setup my new Appender

<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
    <file value="C:\Logs\ServiceLayer.log" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <datePattern value="_yyyy.MM.dd.lo\g" />
    <maximumFileSize value="5MB" />
    <maxSizeRollBackups value="10" />
    <PreserveLogFileNameExtension value="true" />
    <layout type="log4net.Layout.PatternLayout">
        <!-- <conversionPattern value="%level %thread %logger - %message%newline" /> -->
        <conversionPattern value="%d{yyyy-MM-dd HH:mm:ss.fff} %5level [%thread][%property{myclass.log.username}::%property{myclass.log.businessRequest}(%property{myclass.log.activityLogID})]  - %message%newline" />
    </layout>
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
</appender>
<appender name="PerfFile" type="log4net.Appender.RollingFileAppender">
    <file value="C:\Logs\Perf.log" />
    <appendToFile value="true" />
    <rollingStyle value="Composite" />
    <datePattern value="_yyyy.MM.dd-HH-mm.lo\g" />
    <maximumFileSize value="5MB" />
    <maxSizeRollBackups value="24" />
    <PreserveLogFileNameExtension value="false" />
    <layout type="log4net.Layout.PatternLayout">
        <!-- <conversionPattern value="%level %thread %logger - %message%newline" /> -->
        <conversionPattern value="%d{yyyy-MM-dd HH:mm:ss.fff} %5level [%thread][%property{myclass.log.username}::%property{myclass.log.businessRequest}(%property{myclass.log.activityLogID})]  - %message%newline" />
    </layout>
    <lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
</appender>

The perf appender is the new appender I added...

I also set up a BufferForwardingAppender

<appender name="MyDefaultAppender" type="log4net.Appender.BufferingForwardingAppender">
<bufferSize value="128" />
<lossy value="false" />
<evaluator type="log4net.Core.LevelEvaluator">
    <threshold value="WARN" />
</evaluator>
<appender-ref ref="RollingFile" />

From there I set my Root

<root>
  <level value="ERROR" />
  <appender-ref ref="MyDefaultAppender" />
</root>

Once I had this setup, I get ERRORs logged to my rolling log file, however I want to capture some info level data into my perf file...

<logger name="MyNamespace.MyClass" additivity="false">
    <level value="INFO" />
    <appender-ref ref="PerfFile" />
</logger>
<logger name="MyNamespace.MyOtherClass" additivity="false">
    <level value="WARN" />
    <appender-ref ref="PerfFile" />
</logger>
<logger name="MyNamespace.MyThirdClass" additivity="false">
    <level value="INFO" />
    <appender-ref ref="PerfFile" />
</logger>
<logger name="MyNamespace.MyFinalClass" additivity="false">
    <level value="WARN" />
    <appender-ref ref="PerfFile" />
</logger>

I now get my Info and Warn in my Perf log but I also get my errors there too, is it possible to get my ERRORs in my main log and my info levels in my perf logs?

Upvotes: 0

Views: 1134

Answers (1)

stuartd
stuartd

Reputation: 73243

To control what log events get into each file, Add LevelRangeFilters to your appenders:

<!-- log error and above - add to the RollingFile appender config -->
<filter type="log4net.Filter.LevelRangeFilter">
  <levelMin value="ERROR"/>
  <levelMax value="FATAL"/>
</filter>

and

<!-- log INFO and below - add to the PerfFile appender config -->
<filter type="log4net.Filter.LevelRangeFilter">
  <levelMin value="DEBUG"/>
  <levelMax value="INFO"/>
</filter>

Upvotes: 1

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