How to write log4net config into appsettings.json?

Question

I have implemented log4net into .NET core 2.0, to log into a text file. As log4net have a config file, which is having XML configuration in it. So, I have created a separate file log4net.config to set its configuration and it is working fine. But I want to set its configuration into appsettings.json. Is it possible to write the log4net configuration into appsettings.json.

<appSettings>
    <add key="IsLog" value="True" />
    <add key="MaxThreads" value="3" />
  </appSettings>
  <log4net debug="false">
    <root>
      <level value="ALL" />
      <appender-ref ref="RollingLogFileAppender" />
    </root>
 <appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
    <file value="./logs/logfile.txt" />
    <appendToFile value="false" />
    <rollingStyle value="Size" />
    <maxSizeRollBackups value="-1" />
    <maximumFileSize value="50GB" />
    <layout type="log4net.Layout.PatternLayout">
        <conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
    </layout>
</appender>   
  </log4net>

this is my XML configuration.

I have found this question in which it is mentioned that log4net don't support Json projects. Is it possible to write its configuration into appsettings.json.

Answer 1

Maybe it is not the right way but, anyhow I managed to use my log4net.config in appSettings.json. I am putting my answer here so it can help someone if they don't want to use an extra config file for there project.

So what I have done is like by converting my XML into JSON and used the JSON as a string on my appSettings.json after that I use the following code to read the string.

appSettings.json

{
  "ConnectionStrings": {
    "LoggerConfig": "Config string"
  }
}

Json to XML Conversion using Newtonsoft.Json

 string xmlElement = _configuration["ConnectionStrings:LoggerConfig"];
 XmlDocument doc = (XmlDocument)JsonConvert.DeserializeXmlNode(xmlElement);
 XmlConfigurator.Configure(logRepository, GenerateStreamFromString(doc.InnerXml));

This code is used to convert the JSON into XML but it will not provide the XML content as Element so, I used it as a stream. For converting the string into a stream I used the following code.

        public static Stream GenerateStreamFromString(string s)
        {
            var stream = new MemoryStream();
            var writer = new StreamWriter(stream);
            writer.Write(s);
            writer.Flush();
            stream.Position = 0;
            return stream;
        }

and it works fine.

Here I used to convert first my XML to JSON and again JSON to XML to use it as a log4net config, but if anyone wants then use XML directly as a string, So it will reduce some code.