How to generate site specific log file in multi site scenario?

Question

By default only one log file is created in multi-site scenario also.

We have come across requirement to generate log file as per site i.e. each site have its own log file. So it'll easy to debug and trace any issue.

Example
www.site1.com log.site1.20190702.152425.txt
www.site2.com log.site2.20190702.152425.txt

Please illuminate on custom implementation to achieve this.

Answer 1

First, start by adding multiple appender to your app.config:

    <appender name="site1" type="log4net.Appender.RollingFileAppender">
        <file value="site1.txt" />
        <appendToFile value="true" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %message%newline" />
        </layout>
    </appender>
    <appender name="site2" type="log4net.Appender.FileAppender">
        <file value="site2.txt" />
        <appendToFile value="true" />
        <layout type="log4net.Layout.PatternLayout">
            <conversionPattern value="%date %message%newline" />
        </layout>
    </appender>
  <root>
    <level value="ALL" />
    <appender-ref ref="site1" />
  </root>
  <logger additivity="false" name="site2">
    <level value="DEBUG"/>
    <appender-ref ref="site2" />
  </logger>

then in code you can call them by:

ILog site1 = LogManager.GetLogger("site1");
ILog site2 = LogManager.GetLogger("site2");