I have a project in which I want to use log4net for logging. When I'm testing my project using a console app program, it does not log anything unless I write the log4net section in the app.config of the test project. How do i fix this ?
This is my configuration in my app.config file in the DLL:
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="MyLogFile.log" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="5" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date{ABSOLUTE} [%thread] %level %logger - %message%newline%exception" />
</layout>
</appender>
<root>
<level value ="DEBUG"/>
<appender-ref ref ="RollingFileAppender"/>
</root>
</log4net>
From log4net documentation page: https://logging.apache.org/log4net/release/manual/configuration.html (Configuration Files section)
The only way to configure an application using the System.Configuration APIs is to call the log4net.Config.XmlConfigurator.Configure() method or the log4net.Config.XmlConfigurator.Configure(ILoggerRepository) method.
Make sure you are initializing log4net on your console app.
Related
I am using log4net for logging in my webapi. logging is working fine in my localhost or while i am deploying it on a app server. Same thing is not working in azure web service. Folder where log file has to be created is there but no files in there.
i have added below section in my web.config file,
<log4net>
<appender name ="ErrorLog" type ="log4net.Appender.RollingFileAppender">
<file value ="MyLogs\"/>
<staticLogFileName value ="false" />
<appendToFile value ="true"/>
<rollingStyle value ="Date"/>
<datePattern value ="yyyy-MM-dd.'Err'" />
<lockingModel type ="log4net.Appender.FileAppender+MinimalLock"/>
<layout type ="log4net.Layout.PatternLayout">
<conversionPattern value ="%d{DATE} [%t] %-5p %c - %m%n" />
</layout>
</appender>
<logger name ="ErrorLog">
<maximumFileSize value ="15MB" />
<appender-ref ref="ErrorLog"/>
</logger>
</log4net>
It seems that there are some mistake with log4net configuration.
Here I have a complete steps you could follow with and it works well on my site:
1.Install the log4net.dll binary using NuGet.
2.Configure the log4net name, type properties in the web.config
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,Log4net"/>
</configSections>
</configuration>
3.Configure the log4net properties
<log4net>
<root>
<level value="Debug"/>
<appender-ref ref="LogFileAppender"/>
</root>
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender">
<param name="File" value="D:\Home\LogFiles\Log4Net\Log4Net.log"/>
<param name="AppendToFile" value="true"/>
<rollingStyle value="Size"/>
<maxSizeRollBackups value="10"/>
<maximumFileSize value="3MB"/>
<staticLogFileName value="true"/>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
<logger name="SleepyCore">
<level value="INFO"/>
</logger>
</log4net>
Note: You need to specify the address of the log on azure like D:\Home
4.Modify the Global.asax Application_Start() method add the following code in the method.
log4net.Config.XmlConfigurator.Configure(new FileInfo(Server.MapPath("~/Web.config")));
5.Write log with an instance of the ILog interface
ILog log = LogManager.GetLogger("SleepyCore");
log.Info("Begin - Page_Load() at " + DateTime.Now.ToString("hh.mm.ss.ffffff"));
6.The output as below:
For more details about how to configure log4net on azure, you could refer to this article.
log file is not getting created,
using below call to get logger and config file.
is it required to give full path for file?
private static readonly log4net.ILog logger = log4net.LogManager.GetLogger
(System.Reflection.MethodBase.GetCurrentMethod().DeclaringType);
<?xml version="1.0" encoding="utf-8"?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,log4net, Version=1.2.10.0, Culture=neutral, PublicKeyToken=1b44e1d426115821" requirePermission="false"/>
</configSections>
<!-- Log4net Logging Setup -->
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="50" />
<maximumFileSize value="50MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
</configuration>
Does your code call
log4net.Config.XmlConfigurator.Configure();
on startup?
The <root> section I use has priority, not level:
<root>
<priority value="ALL" />
<appender-ref ref="LogFileAppender" />
</root>
(Apparently, that's not the issue https://stackoverflow.com/a/24188507/21336)
after adding below line in AssemblyInfo.cs, could see log file getting created and logs coming.
[assembly: log4net.Config.XmlConfigurator(Watch = true)]
I have a windows service application which is basically a solution created with VS2015 and contains 2 projects.
The first project is dealing with the service itself (start, stop, etc) while the second one is maintaining the process that will be executed due to launch of the service.
I am using the log4net to log messages into a file.
I wanted to created 2 separate log files for each project.
This has been configured into the service project and is up and running.
while it is not working for the second project.
So mainly my question is how to configure log4net to log into different files within one solution?
Configure log4net within the executing project only. If you want log messages from an specific assembly logged to a separate file make sure the root namespace for that assembly is unique and define two log4net appenders, each logging to a separate file and use logging filters to filter by namespace.
<!-- Will log only from the My.Process namespace -->
<appender name="ProcessLog" type="log4net.Appender.RollingFileAppender">
<filter type="log4net.Filter.LoggerMatchFilter">
<loggerToMatch value="My.Process" />
<acceptOnMatch value="true" />
</filter>
<filter type="log4net.Filter.DenyAllFilter" />
<file value="process.log" />
<!-- layout, etc -->
</appender>
<!-- will log everything except from the My.Process namespace -->
<appender name="ServiceLog" type="log4net.Appender.RollingFileAppender">
<filter type="log4net.Filter.LoggerMatchFilter">
<loggerToMatch value="My.Process" />
<acceptOnMatch value="false" />
</filter>
<file value="service.log" />
<!-- layout, etc -->
</appender>
And don't forget to add a reference to both appenders in the root element.
Assuming your first and second project have different root namespaces (e.g. Project1.Service and Project2.MaintainProcess), you can use 2 appenders and the logger hierarchy to split the log files by project:
<log4net>
<appender name="Project1Logger" type="log4net.Appender.RollingFileAppender">
<file value="Project1Logger.log" />
</appender>
<appender name="Project2Logger" type="log4net.Appender.RollingFileAppender">
<file value="Project2Logger.log" />
</appender>
<root>
<level value="ALL" />
</root>
<logger name="{Project1RootNamespaceHere}">
<appender-ref ref="Project1Logger" />
</logger>
<logger name="{Project2RootNamespaceHere}">
<appender-ref ref="Project2Logger" />
</logger>
</log4net>
If you don't want to use separate appenders and logger hierarchy then see this answer for an alternative method using a custom pattern substitution to use a single appender. I'm not sure of the performance implications of that approach though.
Complete configuration (with a MinimalLock file appender):
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net"/>
</configSections>
<startup>
<supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.6.2" />
</startup>
<log4net>
<!-- ALL, DEBUG, INFO, WARN, ERROR, FATAL, OFF -->
<appender name="RollingFileAppender_Info" type="log4net.Appender.RollingFileAppender">
<file value="Info.log" />
<encoding value="utf-8" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100MB" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message %exception%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="DEBUG" />
<levelMax value="WARN" />
</filter>
</appender>
<appender name="RollingFileAppender_Error" type="log4net.Appender.RollingFileAppender">
<file value="Error.log" />
<encoding value="utf-8" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100MB" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message %exception%newline" />
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="RollingFileAppender_Info" />
<appender-ref ref="RollingFileAppender_Error" />
</root>
</log4net>
</configuration>
I get this error when I try to configure my logger using:
log4net.Config.XmlConfigurator.Configure();
The app.config looks like this:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler, log4net" />
</configSections>
<log4net>
<root>
<level value="ALL" />
<appender-ref ref="LogFileAppender" />
</root>
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="C:\Logs\my-log-file.txt" />
<param name="AppendToFile" value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date [%thread] %-5level %logger [%C{1}.%M] - %message%newline" />
</layout>
</appender>
</log4net>
</configuration>
I'm trying to write separate logs for each component of a system. I have one working for the main class but I get this error when trying to configure another one for a different class. What is the cause?
Thanks in adv!
I ended up using the following to configure my Add-In and RTD:
[Add-In]
log4net.Config.XmlConfigurator.Configure(
new FileInfo(AppDomain.CurrentDomain.BaseDirectory + "MyAdd-In.dll.config"));
[RTD]
log4net.Config.XmlConfigurator.Configure(
new FileInfo(Path.GetDirectoryName(Assembly.GetExecutingAssembly().Location) + "\\RtdServer.dll.config"));
Which then configured the separate logger for my RTD.
Hth
I have the following config file:
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler,Log4net"/>
</configSections>
<log4net>
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="D:\log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="20" />
<maximumFileSize value="4MB" />
<staticLogFileName value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="LogFileAppender" />
</root>
</log4net>
Every line I am logging is written to Console as well, how can I cancel it?
I want it to be appended to the log.txt file ONLY, without anything in Console.
Either you have added console appender programmatically, or this configuration file is not used by log4net. Log4net don't add any default appenders (like default TraceListener in .net). And this configuration specifies only RollingFileAppender. So, verify which configuration file is used, and whether some appenders added in the code.