NLog.config

<?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">

    <!-- 
  See http://nlog-project.org/wiki/Configuration_file 
  for information on customizing logging rules and outputs.
   -->
    <extensions>
      <add assembly="NLog.Target.Datadog" />
    </extensions>
    <variable name="logDirectory" value="${basedir}/logs"/>
    <variable name="source" value="Url-Shortener"/>
    <targets>
        <!-- add your targets here -->
        <target xsi:type="File" name="f" fileName="${logDirectory}/${shortdate}_log.log"
                layout="${longdate} ${callsite} ${uppercase:${level}} ${message}" />

      <target xsi:type="DataDog"
            name="dataDog"
            includeAllProperties="true"
            apiKey="">
        <field name="ddsource" layout="${source}" />
        <field name="host" layout="${machinename}" />
        <layout xsi:type="JsonLayout">
           <attribute name="message" layout="${message}" />
        </layout>
      </target>  

    </targets>
    <rules>
        <!-- minLevel values:
		    Trace	0	Most verbose level. Used for development and seldom enabled in production.	Ex. Request-payload, Response-payload, Begin-method-X or End-method-X
            Debug	1	Debugging the application behavior from internal events of interest.	Ex. Executed query, User authenticated, Session expired
            Info	2	Information that highlights progress or application lifetime events.	
            Warn	3	Warnings about validation issues or temporary failures that can be recovered.	
            Error	4	Errors where functionality has failed or Exception have been caught.	
            Fatal	5	Most critical level. Application is about to abort.	-->
      <logger name="STORIS.UrlRedirect" minlevel="Warn" writeTo="dataDog" />

    </rules>
</nlog>