Log4Net configuring log level - log4net

Question

How do I make Log4net only log Info level logs? Is that even possible? Can you only set a threshold?
This is what I have, and it logs Info and above as I would expect. Is there anything i can do to make it only log info?
<logger name="BrokerCollection.Model.XmlDocumentCreationTask">
<appender-ref ref="SubmissionAppender"/>
<level value="Info" />
</logger>

Answer 1

Within the definition of the appender, I believe you can do something like this:
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<filter type="log4net.Filter.LevelRangeFilter">
<param name="LevelMin" value="INFO"/>
<param name="LevelMax" value="INFO"/>
</filter>
...
</appender>

Answer 2

Use threshold.
For example:
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<threshold value="WARN"/>
<param name="File" value="File.log" />
<param name="AppendToFile" value="true" />
<param name="RollingStyle" value="Size" />
<param name="MaxSizeRollBackups" value="10" />
<param name="MaximumFileSize" value="1024KB" />
<param name="StaticLogFileName" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="Header" value="[Server startup]
" />
<param name="Footer" value="[Server shutdown]
" />
<param name="ConversionPattern" value="%d %m%n" />
</layout>
</appender>
<appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
<threshold value="ERROR"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread]- %message%newline" />
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<threshold value="INFO"/>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d [%thread] %m%n" />
</layout>
</appender>
In this example all INFO and above are sent to Console, all WARN are sent to file and ERRORs are sent to the Event-Log.

Answer 3

Yes. It is done with a filter on the appender.
Here is the appender configuration I normally use, limited to only INFO level.
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="${HOMEDRIVE}\\PI.Logging\\PI.ECSignage.${COMPUTERNAME}.log" />
<appendToFile value="true" />
<maxSizeRollBackups value="30" />
<maximumFileSize value="5MB" />
<rollingStyle value="Size" /> <!--A maximum number of backup files when rolling on date/time boundaries is not supported. -->
<staticLogFileName value="false" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date{yyyy-MM-dd HH:mm:ss.ffff} [%2thread] %-5level %20.20type{1}.%-25method at %-4line| (%-30.30logger) %message%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="INFO" />
<levelMax value="INFO" />
</filter>
</appender>

Answer 4

If you would like to perform it dynamically try this:
using System;
using System.Collections.Generic;
using System.Text;
using log4net;
using log4net.Config;
using NUnit.Framework;
namespace ExampleConsoleApplication
{
enum DebugLevel : int
{
Fatal_Msgs = 0 ,
Fatal_Error_Msgs = 1 ,
Fatal_Error_Warn_Msgs = 2 ,
Fatal_Error_Warn_Info_Msgs = 3 ,
Fatal_Error_Warn_Info_Debug_Msgs = 4
}
class TestClass
{
private static readonly ILog logger = LogManager.GetLogger(typeof(TestClass));
static void Main ( string[] args )
{
TestClass objTestClass = new TestClass ();
Console.WriteLine ( " START " );
int shouldLog = 4; //CHANGE THIS FROM 0 TO 4 integer to check the functionality of the example
//0 -- prints only FATAL messages
//1 -- prints FATAL and ERROR messages
//2 -- prints FATAL , ERROR and WARN messages
//3 -- prints FATAL , ERROR , WARN and INFO messages
//4 -- prints FATAL , ERROR , WARN , INFO and DEBUG messages
string srtLogLevel = String.Empty;
switch (shouldLog)
{
case (int)DebugLevel.Fatal_Msgs :
srtLogLevel = "FATAL";
break;
case (int)DebugLevel.Fatal_Error_Msgs:
srtLogLevel = "ERROR";
break;
case (int)DebugLevel.Fatal_Error_Warn_Msgs :
srtLogLevel = "WARN";
break;
case (int)DebugLevel.Fatal_Error_Warn_Info_Msgs :
srtLogLevel = "INFO";
break;
case (int)DebugLevel.Fatal_Error_Warn_Info_Debug_Msgs :
srtLogLevel = "DEBUG" ;
break ;
default:
srtLogLevel = "FATAL";
break;
}
objTestClass.SetLogingLevel ( srtLogLevel );
objTestClass.LogSomething ();
Console.WriteLine ( " END HIT A KEY TO EXIT " );
Console.ReadLine ();
} //eof method
/// <summary>
/// Activates debug level
/// </summary>
/// <sourceurl>http://geekswithblogs.net/rakker/archive/2007/08/22/114900.aspx</sourceurl>
private void SetLogingLevel ( string strLogLevel )
{
string strChecker = "WARN_INFO_DEBUG_ERROR_FATAL" ;
if (String.IsNullOrEmpty ( strLogLevel ) == true || strChecker.Contains ( strLogLevel ) == false)
throw new Exception ( " The strLogLevel should be set to WARN , INFO , DEBUG ," );
log4net.Repository.ILoggerRepository[] repositories = log4net.LogManager.GetAllRepositories ();
//Configure all loggers to be at the debug level.
foreach (log4net.Repository.ILoggerRepository repository in repositories)
{
repository.Threshold = repository.LevelMap[ strLogLevel ];
log4net.Repository.Hierarchy.Hierarchy hier = (log4net.Repository.Hierarchy.Hierarchy)repository;
log4net.Core.ILogger[] loggers = hier.GetCurrentLoggers ();
foreach (log4net.Core.ILogger logger in loggers)
{
( (log4net.Repository.Hierarchy.Logger)logger ).Level = hier.LevelMap[ strLogLevel ];
}
}
//Configure the root logger.
log4net.Repository.Hierarchy.Hierarchy h = (log4net.Repository.Hierarchy.Hierarchy)log4net.LogManager.GetRepository ();
log4net.Repository.Hierarchy.Logger rootLogger = h.Root;
rootLogger.Level = h.LevelMap[ strLogLevel ];
}
private void LogSomething ()
{
#region LoggerUsage
DOMConfigurator.Configure (); //tis configures the logger
logger.Debug ( "Here is a debug log." );
logger.Info ( "... and an Info log." );
logger.Warn ( "... and a warning." );
logger.Error ( "... and an error." );
logger.Fatal ( "... and a fatal error." );
#endregion LoggerUsage
}
} //eof class
} //eof namespace
The app config:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net"
type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<param name="File" value="LogTest2.txt" />
<param name="AppendToFile" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="Header" value="[Header] \r\n" />
<param name="Footer" value="[Footer] \r\n" />
<param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
</layout>
</appender>
<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
<mapping>
<level value="ERROR" />
<foreColor value="White" />
<backColor value="Red, HighIntensity" />
</mapping>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.2.10.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="data source=ysg;initial catalog=DBGA_DEV;integrated security=true;persist security info=True;" />
<commandText value="INSERT INTO [DBGA_DEV].[ga].[tb_Data_Log] ([Date],[Thread],[Level],[Logger],[Message]) VALUES (#log_date, #thread, #log_level, #logger, #message)" />
<parameter>
<parameterName value="#log_date" />
<dbType value="DateTime" />
<layout type="log4net.Layout.PatternLayout" value="%date{yyyy'-'MM'-'dd HH':'mm':'ss'.'fff}" />
</parameter>
<parameter>
<parameterName value="#thread" />
<dbType value="String" />
<size value="255" />
<layout type="log4net.Layout.PatternLayout" value="%thread" />
</parameter>
<parameter>
<parameterName value="#log_level" />
<dbType value="String" />
<size value="50" />
<layout type="log4net.Layout.PatternLayout" value="%level" />
</parameter>
<parameter>
<parameterName value="#logger" />
<dbType value="String" />
<size value="255" />
<layout type="log4net.Layout.PatternLayout" value="%logger" />
</parameter>
<parameter>
<parameterName value="#message" />
<dbType value="String" />
<size value="4000" />
<layout type="log4net.Layout.PatternLayout" value="%messag2e" />
</parameter>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="LogFileAppender" />
<appender-ref ref="AdoNetAppender" />
<appender-ref ref="ColoredConsoleAppender" />
</root>
</log4net>
</configuration>
The references in the csproj file:
<Reference Include="log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821, processorArchitecture=MSIL">
<SpecificVersion>False</SpecificVersion>
<HintPath>..\..\..\Log4Net\log4net-1.2.10\bin\net\2.0\release\log4net.dll</HintPath>
</Reference>
<Reference Include="nunit.framework, Version=2.4.8.0, Culture=neutral, PublicKeyToken=96d09a1eb7f44a77, processorArchitecture=MSIL" />

Answer 5

you can use log4net.Filter.LevelMatchFilter.
other options can be found at
log4net tutorial - filters
in ur appender section add
<filter type="log4net.Filter.LevelMatchFilter">
<levelToMatch value="Info" />
<acceptOnMatch value="true" />
</filter>
the accept on match default is true so u can leave it out but if u set it to false u can filter out log4net filters