Refered the post
Why is log4net creating two separate log files when using RollingFileAppender?
I want to know if creation of new log files whe current file exceeds certain size is possible.
Look at RollingFileAppender in the log4net config examples. The example given there does have a max file size, and a new file is generated once the old one hits the cap.
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="log.txt" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="100KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
Related
I am trying to create file with naming convention as Service_HH_mm_ss.txt.
file naming format is
<file type="log4net.Util.PatternString" value="C:\\Log\\%date{yyyy-MM-dd}\\Service_%date{HH_mm_ss}.log" />
Also i have given file max size to
<rollingStyle value="Size" />
<maximumFileSize value="10KB" />
i want to create new file if and only if size exceed to 10KB, but new file is getting creating on each and every second.
not able to find the solution.
Config file code is:
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="C:\\Log\\%date{yyyy-MM-dd}\\Service_%date{HH_mm_ss}.log" />
<encoding value="utf-8" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="20" />
<maximumFileSize value="10KB" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level - %message%n" />
</layout>
Is it possible to do what i want, i ma not getting any solution.
In your Appender definition the value for the File name changes every second. Therefor log4net creates a new file every second. If you need the exact time to be part of the file name, you can use rolling Style 'Composite' and add a DatePattern like so:
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="C:\\Log\\%date{yyyy-MM-dd}\\Service_" />
<encoding value="utf-8" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<datePattern value = "HH_mm_ss'.log'"
<maxSizeRollBackups value="20" />
<maximumFileSize value="10KB" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %level - %message%n" />
</layout>
This question already has answers here:
Log4net rolling daily filename with date in the file name
(11 answers)
Closed 8 years ago.
I want to create a log file using Log4Net. It should have daily activities log till midnight and resets for the next day. What appender to use and how?
EDIT:
I forgot to mention, it should not create a different file each day but only one file.
Something like this ?
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<file value="logs\" />
<datePattern value="dd.MM.yyyy'.log'" />
<staticLogFileName value="false" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="50MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
It should do what you expect.
I've included all settings to help you to tweak it to reach your final needs. There are many samples like this one on the web with explanations.
I want to create log files names with the following pattern:
SBRF_20120820.log
SBRF_20120821.log
SBRF_20120822.log
SBRF_20120823.log
In other words, create a new file for each day. So, I create the following configuration to do that:
<log4net>
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender, log4net">
<file type="log4net.Util.PatternString" value="Logs/SBRF_%date{yyyyMMdd}.log" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level - %message%newline" />
</layout>
</appender>
<logger name="LogEmArquivo">
<level value="INFO" />
<appender-ref ref="FileAppender" />
</logger>
</log4net>
When I run the program, today for example, the file SBRF_20120823.log will be created. But in the following days the log keeps to write in the SBRF_20120823.log file, and the files that are created are:
SBRF_20120823.log.2012-08-23
SBRF_20120823.log.2012-08-24
SBRF_20120823.log.2012-08-25
SBRF_20120823.log.2012-08-26
And if I run the program tomorrow, the files that will be created are:
SBRF_20120824.log.2012-08-24
SBRF_20120824.log.2012-08-25
SBRF_20120824.log.2012-08-26
SBRF_20120824.log.2012-08-27
Why?
You do not put the date pattern in the <file> - that is the static part of the filename. You need to put it into the <datePattern>.
Also, if you are using log4net 1.2.11, you can use <preserveLogFileNameExtension> which puts the datePattern on the current file also.
I think this is what you want your configuration to look like:
<log4net>
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender, log4net">
<file type="log4net.Util.PatternString" value="Logs/SBRF_.log"/>
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd" />
<preserveLogFileNameExtension value="true"/>
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level - %message%newline" />
</layout>
</appender>
<logger name="LogEmArquivo">
<level value="INFO" />
<appender-ref ref="FileAppender" />
</logger>
Remove the <rollingStyle value="Date" />.
Don't think you change this behaviour with the RollingFileAppender, so you would have to create your own appender.
log4net in my project creates new log file every minute. I would like to have just one file per instance of my application, but every instance that runs should create new log file.
This is from my app.config file:
<appender name="file" type="log4net.Appender.RollingFileAppender">
<file value="C:\\Logs\\log2_"/>
<rollingStyle value="Date"/>
<datePattern value="MMdd_HHmmss.\tx\t"/>
<staticLogFileName value="false"/>
<appendToFile value="true"/>
<maximumFileSize value="500MB"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level %message%newline"/>
</layout>
</appender>
What is the error here?
Your rolling style is set to Date meaning it will rotate on a time based interval. The datePattern element appears to be misused but it set to roll every minute (the ./tx/t) seem extraneous.
From the documentation the following is the example for once per app instance (with a 50G hard limit):
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="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 [%property{NDC}] - %message%newline" />
</layout>
</appender>
See here for the documentation
exclude dateTime minutes from file layout
Im trying to create a log file using log4net.
I have it create a log file. But i can't get the name of the log file to be the current date.
I have tried this:
<file value="log\\$date.txt"/>
But this just leans me with a file called "$date.txt" in the log folder.
I would like the file to be named "25-04-2012.txt"
Anyone know the little trick to make this work?
From the documentation, you should use a RollingFileAppender
This example show how to configure the RollingFileAppender to roll log
files on a date period. This example will roll the log file every
minute! To change the rolling period adjust the DatePattern value. For
example, a date pattern of "yyyyMMdd" will roll every day. See
System.Globalization.DateTimeFormatInfo for a list of available
patterns.
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="logfile" />
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyyMMdd-HHmm" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
Documentation (search for rollingFileappender)
<appender name="LogFileAppender" type="log4net.Appender.RollingFileAppender" >
<param name="File" value="C:\Akhila\logger\logger\bin\Debug\log-" />
<param name="AppendToFile" value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyy-MM-dd" />
<staticLogFileName value="false" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%-5p%d{yyyy-MM-dd hh:mm:ss} – %m%n" />
</layout>
</appender>