hi i'm using log4net for logging my website.
Every day a new file is created like "filename.log24-06-2009"
this is the code in the web.config file:
<log4net>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="App_Data\Missioni.log" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<!--<datePattern value="yyyy-MM-dd" />-->
<maxSizeRollBackups value="5" />
<maximumFileSize value="5MB" />
<layout type="log4net.Layout.PatternLayout">
<header value="[Header]
" />
<footer value="[Footer]
" />
<conversionPattern value="%date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<root>
<level value="DEBUG" />
<appender-ref ref="RollingLogFileAppender" />
</root>
</log4net>
How can i do for use a unique log file?
thanks
The question' a bit unclear, so please comment if I'm off. If you want to change how the files are created, uncomment the datePattern block and you can specify the file name layout, for example if you wanted the log to change monthly:
<datePattern value="yyyy-MM" />
When the pattern changes (midnight with the standard datePattern) a new file is created, change the pattern to so it only rolls to a new file when you want.
Related
I have an ASP.NET web app that uses log4net to log to various appenders. I have successfully added a SmtpAppender with a LevelEvaluator and can get e-mails to be sent with this; however if I replace this with a TimeEvaluator I cannot get e-mails to send.
My appender with the LevelEvaluator looks like this (this is working):
<appender name="EmailErrorAppender" type="log4net.Appender.SmtpAppender">
<to value="to#myemail" />
<from value="from#myemail" />
<subject value="Alert Subject" />
<smtpHost value="mymailhost" />
<bufferSize value="50" />
<lossy value="true" />
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
<evaluator type="log4net.Core.LevelEvaluator">
<threshold value="ERROR"/>
</evaluator>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger%newline%newline" />
</layout>
</appender>
The problematic appender with the TimeEvaluator looks like this (this is not working):
<appender name="EmailErrorAppender" type="log4net.Appender.SmtpAppender">
<to value="to#myemail" />
<from value="from#myemail" />
<subject value="Alert Subject" />
<smtpHost value="mymailhost" />
<bufferSize value="50" />
<lossy value="true" />
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
<evaluator type="log4net.Core.TimeEvaluator">
<interval value="30"/>
</evaluator>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger%newline%newline" />
</layout>
</appender>
I've checked log4net's internal debug and it says it is loading it fine.
I would appreciate any help - is TimeEvaluator broken in an ASP.NET web context?
I have following configuration:
<log4net>
<root>
<level value="All"/>
<appender-ref ref="RollingFileAppender"/>
</root>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="mylog.log"/>
<appendToFile value="true"/>
<preserveLogFileNameExtension value="true"/>
<rollingStyle value="Composite"/>
<datePattern value=".yyyyMMdd"/>
<maximumFileSize value="5MB"/>
<countDirection value="1"/>
<maxSizeRollBackups value="-1"/>
<staticLogFileName value="false"/>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
</log4net>
And the following code in global.asax:
Sub Application_Start()
AreaRegistration.RegisterAllAreas()
RegisterGlobalFilters(GlobalFilters.Filters)
RegisterRoutes(RouteTable.Routes)
BasicConfigurator.Configure();
LogManager.GetLogger(typeof(Global_asax)).Error("Logger configured")
End Sub
For the tag file in configuration above. I have tried C:\my folder\mylog.log as well as what is seen above mylog.log
However, I do not see this file generated anywhere and there are no exceptions.
Environment: VS 2013 ASP.Net VB. Running via Debug menu. When I run IISExpress is started by VS2013 and site runs. but no log is seen.
I have tried various combinations for the file tag but nothing works.
Can someone help please?
This is final version of what I ended up doing that worked:
<log4net>
<root>
<level value="ALL"/>
<appender-ref ref="RollingFileAppender"/>
</root>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logs\log4net.log"/>
<datePattern value="yyyy-MM-dd'-FULL.log'" />
<appendToFile value="true"/>
<preserveLogFileNameExtension value="true"/>
<rollingStyle value="Size"/>
<maximumFileSize value="250KB"/>
<maxSizeRollBackups value="-1"/>
<staticLogFileName value="false"/>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%date [%thread] %-5level %logger - %message%newline"/>
</layout>
</appender>
</log4net>
And
XmlConfigurator.Configure()
LogManager.GetLogger(typeof(Global_asax)).Error("Logger configured")
This logged to log\log4net.log in the application directory (i.e. where my code is )
This used to work for me (I've switched to the lighter and better configurable NLog), log rolled daily, was written in a subfolder named "Logs" under the app's path.
<appender name="RollingDebugAppender" type="log4net.Appender.RollingFileAppender">
<file value="Logs\" />
<datePattern value="yyyy-MM-dd'-FULL.log'" />
<staticLogFileName value="false" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<maxSizeRollBackups value="100" />
<maximumFileSize value="5MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
You should turn on log4net's internal debugging to figure out what's failing...
Sample web.config
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add name="textWriterTraceListener"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\log4net_internal.log"/>
</listeners>
</trace>
</system.diagnostics>
</configuration>
More information available here on the troubleshooting section.
*_%date{yyyyMMdd}.log
below is the key, if this is missing u will see logs like above
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add name="textWriterTraceListener"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\log4net_internal.log"/>
**<staticLogFileName value="false" />**
</listeners>
</trace>
</system.diagnostics>
</configuration>
Adding debug = "true" to the <log4net> tag (i.e. <log4net debug="true"> ) can help to solve the problem
i was thinking to use Log4Net for our webform application in asp.net. so i checked few article on this but i saw all article not saying about each property regarding configuration.
so i apologized that i have to paste bit big config section here and looking for some one who can help me to understand each property usage.
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<log4net>
<appender name="DbAppender" type="log4net.Appender.ADONetAppender">
<bufferSize value="0" />
<connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
<connectionString value="{auto}" />
<commandText value="INSERT INTO Log4Net ([date],[thread],[level],[logger],[message],[exception]) VALUES
(#log_date, #thread, #log_level, #logger, #message, #exception)" />
<parameter>
<parameterName value="#log_date" />
<dbType value="DateTime" />
<layout type="log4net.Layout.RawTimeStampLayout" />
</parameter>
<parameter>
<parameterName value="#thread" />
<dbType value="String" />
<size value="255" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%t" />
</layout>
</parameter>
<parameter>
<parameterName value="#log_level" />
<dbType value="String" />
<size value="10" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%p" />
</layout>
</parameter>
<parameter>
<parameterName value="#logger" />
<dbType value="String" />
<size value="1000" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%c" />
</layout>
</parameter>
<parameter>
<parameterName value="#message" />
<dbType value="String" />
<size value="4000" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%m" />
</layout>
</parameter>
<parameter>
<parameterName value="#exception" />
<dbType value="String" />
<size value="4000" />
<layout type="log4net.Layout.ExceptionLayout" />
</parameter>
</appender>
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppender" />
<appender-ref ref="DbAppender" />
</root>
</log4net>
</configuration>
please see the above config details and answer each property.
1) why <bufferSize value="0" /> is set to 0 ? when one should set other value to bufferSize property ?
2) <connectionType value="System.Data.SqlClient.SqlConnection, System.Data, Version=1.0.3300.0, Culture=neutral, PublicKeyToken=b77a5c561934e089" />
how do i know what PublicKeyToken value i need to use.
3) what is the meaning of connection string auto <connectionString value="{auto}" /> ?
4)
what is the meaning of conversionPattern or
5 what is ExceptionLayout <layout type="log4net.Layout.ExceptionLayout" />
6) what is the meaning of below xml
<root>
<level value="INFO" />
<appender-ref ref="RollingFileAppender" />
<appender-ref ref="DbAppender" />
</root>
what is RollingFileAppender ?
what is DbAppender ?
please discuss about my each point & question. thanks
1/ bufferSize <= 1 means no buffering. Log is written instantly to the database.
http://logging.apache.org/log4net/release/sdk/log4net.Appender.BufferingAppenderSkeleton.BufferSize.html
2/ PublicKeyToken is not Log4net related. Have a look. Keep the given token.
3/ {auto} in connectionString seems to be custom code, maybe taken from here
4/ List of conversion patterns
5/ Exception layout: only the exception text from the logging event will be logged.
http://logging.apache.org/log4net/release/sdk/log4net.Layout.ExceptionLayout.html
6/
FileAppender -> log to file.
RollingFileAppender -> log to file with rotating logs (max N files of length L, then they are erased).
DbAppender -> log to database, that's why there is a connectionString.
More info: http://logging.apache.org/log4net/release/config-examples.html
For Log4Net used in ASP.NET,
how do I specify specify different levels to separate appenders in web.config?
Thanks.
Pure guesswork at play here.
Looked at the documentation & thought, this could be the way to do it.
Note: DEBUG level messages are logged to console & WARN level messages are logged to eventlog.
I hope it works :)
<log4net>
<!-- A1 is set to be a ConsoleAppender -->
<appender name="A1" type="log4net.Appender.ConsoleAppender">
<!-- A1 uses PatternLayout -->
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-4timestamp [%thread] %-5level %logger %ndc - %message%newline" />
</layout>
</appender>
<appender name="EventLogAppender" type="log4net.Appender.EventLogAppender" >
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<logger name="DebugLogger">
<level value="DEBUG" />
<appender-ref ref="A1" />
</logger>
<logger name="WarnLogger">
<level value="WARN" />
<appender-ref ref="EventLogAppender" />
</logger>
</log4net>
This works for SmtpAppender at least. Guess it will work for other appenders too, but I haven't tested it
<evaluator type="log4net.Core.LevelEvaluator">
<threshold value="WARN"/>
really simple question -> i can't seem to get any data from Log4Net in my ASP.NET application. I've got a simple ASP.NET website, which references a class library. In this class library, I have some lines that call the logger.
I'm trying to read the log4net output data in my Visual Studio 2008 debugging Output window.
Here's my code and my configuration...
//Class Library project
//File: Foo.cs
public class FooService
{
private static readonly ILog log = LogManager.GetLogger(typeof(FooService));
public FooService()
{
// NOTE: To play with my L4N settings, I'll call Debug once, then Info once.
log.Info("Starting Constructor");
// ... snip ...
log.Debug("Leaving Constructor");
}
}
// ASP.NET Website project
// File: global.asax
void Application_Start(object sender, EventArgs eventArgs)
{
log4net.Config.XmlConfigurator.Configure();
}
// File: Whatever.aspx.cs
// A delegate method (when a user clicks a button) creates the FooService() instance.
// File: web.config
<configSections>
<section name="log4net" type="log4net.Config.Log4NetConfigurationSectionHandler" requirePermission="false" />
// ....
</configSections>
<log4net>
<appender name="ColoredConsoleAppender" type="log4net.Appender.ColoredConsoleAppender">
<mapping>
<level value="ERROR" />
<foreColor value="White" />
<backColor value="Red, HighIntensity" />
</mapping>
<mapping>
<level value="DEBUG" />
<backColor value="Green" />
</mapping>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="ConsoleAppender" type="log4net.Appender.ConsoleAppender">
<layout type="log4net.Layout.PatternLayout" value="%date [%thread] %-5level %logger - %message%newline" />
</appender>
<appender name="OutputDebugStringAppender" type="log4net.Appender.OutputDebugStringAppender">
<mapping>
<level value="ERROR" />
<foreColor value="White" />
<backColor value="Red, HighIntensity" />
</mapping>
<mapping>
<level value="DEBUG" />
<backColor value="Blue" />
</mapping>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="App_Data\logging\log-append.txt"/>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<level value="ALL" />
<appender-ref ref="OutputDebugStringAppender" />
<appender-ref ref="ConsoleAppender" />
<appender-ref ref="ColoredConsoleAppender" />
</root>
<!-- Specify the level for some specific categories -->
<logger name="DotNetOpenAuth">
<level value="ALL" />
</logger>
</log4net>
Cheers for any help or suggestions...
EDIT: Added the RollingLogFileAppender.
I had this same problem and I think it was looking at the wrong web.config or something. I finally separated out log4net.config from web.config and put a path to it \inetpub\Logs\log4net.config and all is well.
UDPATED ON REQUEST: edited from a slightly more complicated version.
<?xml version="1.0" encoding="utf-8"?>
<log4net>
<appender name="TraceAppender" type="log4net.Appender.TraceAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level (%logger:%line) - %message%newline" />
</layout>
</appender>\
<root>
<!--ALL, DEBUG, INFO, WARN, ERROR, FATAL, OFF-->
<level value="ALL" />
<appender-ref ref="TraceAppender" />
</root>
</log4net>
And it is configured in code as follows:
var logpath = WebConfigurationManager.AppSettings["LogConfigPath"] ?? #"\Inetpub\Logs\log4net.config";
var finfo = new System.IO.FileInfo ( logpath );
XmlConfigurator.Configure( finfo );
ASP.Net has restriction on usage of filesystem access, so try to explicitly point directory under App_Data (were it is allowed)
Here my working sample:
<log4net>
<appender name="FileAppender" type="log4net.Appender.FileAppender">
<file value="App_Data\logging\log-file.txt"/>
Or with rollover
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="App_Data\logging\log-append.txt"/>
Ok, found the answer. I needed to use a TraceAppender.
The application configuration file
can be used to control what listeners
are actually used. See the MSDN
documentation for the Trace class for
details on configuring the trace
system.
Events are written using the
System.Diagnostics.Trace.Write(string,string)
method. The event's logger name is
passed as the value for the category
name to the Write method.
Here's my config file data...
<log4net>
<appender name="TraceAppender" type="log4net.Appender.TraceAppender">
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<!-- Setup the root category, add the appenders and set the default level -->
<root>
<level value="ALL" />
<appender-ref ref="TraceAppender" />
</root>
</log4net>
There are atleast 2 possible problems:
The way the address to the file is specified, try using an absolute path instead.
The process making the call needs rights to modify the file. Check that the user account making writing to the log file has rights to do so.
To debug it I would create and empty directory, give everyone full control, configure to log to that directory. Then test it, see that it works, then gradually tighten the security to an acceptable level.
I added the following line Global.asax file, and it works..!!
log4net.Config.XmlConfigurator.Configure();