I have a project in my solution that runs several different background jobs using Hangfire. I would like to be able to specify a different log file to be created using Log4Net based on the background job that is running.
For example;
job 1 does validation checks across a database and job 2 synchronizes data from a 3rd party app into another database
I have several appenders specified in the config file but all log files get created when I run job 1 or job 2. I want a log file only to be created per job e.g. when I run Job 1 log file job1.xml gets created and not job2.xml and vice versa
Is there any way of specifying the appender only? In the below example I want the file c:\logging\testing\jobs3-%date{ddMMMyyyy-hhmmss}.xml to be created only not the others
XmlConfigurator.Configure();
log4net.ILog log = log4net.LogManager.GetLogger("xmlFile2");
=====config file========
<appender name="file" type="log4net.Appender.RollingFileAppender">
<file value="c:\logging\job1.log" />
<appendToFile value="true" />
<rollingStyle value="Once" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date - [%M] %level %logger - %message%newline" />
</layout>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
</appender>
<appender name="xmlFile" type="log4net.Appender.FileAppender">
<file type="log4net.Util.PatternString" value="c:\logging\testing\job2-%date{ddMMMyyyy-hhmmss}.xml" />
<appendToFile value="true" />
<layout type="log4net.Layout.XmlLayoutSchemaLog4j">
<locationInfo value="true" />
</layout>
<param name="Encoding" value="utf-8" />
</appender>
<appender name="xmlFile2" type="log4net.Appender.FileAppender">
<file type="log4net.Util.PatternString" value="c:\logging\testing\jobs3-%date{ddMMMyyyy-hhmmss}.xml" />
<appendToFile value="true" />
<layout type="log4net.Layout.XmlLayoutSchemaLog4j">
<locationInfo value="true" />
</layout>
<param name="Encoding" value="utf-8" />
</appender>
</log4net>
Related
I have a web project and a console project. I've published my web project on Azure (after having the console app attached as a Azure Webjob to the web project).
Now I want to use Log4net to log in files. It works for the web project but I can't get it to work for the Webjob...
Here is my log4net config :
<log4net>
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="./_logs/[%date{yyyy-MM-dd-HH}]_webjob.log" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="4096KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%newline %date [%thread] %-5level %logger - %message%newline" />
</layout>
</appender>
<logger name="myloggername">
<level value="ALL" />
<appender-ref ref="FileAppender" />
</logger>
Some guy said it would work with a absolute path but it doesn't :
<file type="log4net.Util.PatternString" value="D:/home/site/wwwroot/App_Data/Logs/AccountMaintenance/log4net_%date{yyyyMMdd}.log" />
Please try the following value instead:
<file type="log4net.Util.PatternString" value="d:\home\logfiles\mylogfile.log" />
Following is the appender written in log4net's configuration file
<appender name="RollingFileAppenderForError" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="D:\WEB\LOGs\%date{yyyyMMdd}\"/>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<appendToFile value="true"/>
<rollingStyle value="Composite"/>
<datePattern value="lo\gs_yyyyMMdd.lo\g"/>
<maxSizeRollBackups value="50"/>
<maximumFileSize value="1MB"/>
<staticLogFileName value="false"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="[%date{yyyy-MM-dd HH:mm:ss, fff}] [%property{ServiceTxnID}] [%property{TxnRequestID}] %-5level %logger{2} %ndc - %newline Exception: %message - %exception %newline "/>
</layout>
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="DEBUG" />
<levelMax value="FATAL" />
</filter>
</appender>
Here the problem is, in local and QA environment log4net is writing the log file in correct folder (New folder created everyday) but in production environment its writing the log file in wrong folder let say
In the folder for day 20130706 (YYYYMMDD) its writing the files of logs_20130706.log and logs_20130707.log. and in folder 20130707 we can see the files logs_20130707.log and logs_20130708.log.
I could not get the problem exactly where we are doing a mistake. Will be great if anyone can help me in this.
I guess the file type attribute is not re-calculated as often as the datePattern, you can try this:
<appender name="RollingFileAppenderForError" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="D:\WEB\LOGs"/>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<appendToFile value="true"/>
<rollingStyle value="Composite"/>
<datePattern value="yyyyMMdd\\\\'logs_'yyyyMMdd'.log'"/>
....
</appender>
We changed our log4net file name to include the current date but only want log files created on those dates that there is logged activity. This is our current configuration:
<log4net>
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="{0}\\logfiles\\log%date{{yyyyMMdd}}-${{COMPUTERNAME}}.log" />
<appendToFile value="true" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10MB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level %logger %message%newline" />
</layout>
</appender>
<root>
<level value="WARN" />
<appender-ref ref="RollingFileAppender" />
</root>
</log4net>
It's producing empty files on days when the logger is created but no messages of WARN or greater are written. Is there a configuration to prevent empty files?
I am using the RollingLogFileAppender and it works great and it's rolling over into new files. But it's adding the .1, .2, etc at the very end of the file. So I end up with .log.1, .log.2, etc. So every file technically has a new extension that explorer doesn't know, so I can't just double click on a file to open.
How can I get the rolling file appender to insert that index BEFORE the file extension?
What I want is
.1.log
.2.log
Bonus would be for the current file to always be .0.log, that way they always sort correctly in explorer.
EDIT: added my current config settings
<log4net>
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<file value="App_Data\\Logs\\" />
<datePattern value="dd.MM.yyyy'.log'" />
<staticLogFileName value="false" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="5MB" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" />
</layout>
</appender>
<logger name="File">
<level value="All" />
<appender-ref ref="RollingLogFileAppender" />
</logger>
</log4net>
You just need to use the PreserveLogFileNameExtension property on the RollingFileAppender.
See the following questions:
Log4net appender filename issue
Log4net RollingFileAppender Size rollingStyle file extension
I need my application to create a log file each time it runs.
My preferred format would be App.log.yyyy-MM-dd_HH-mm-ss. If that's not possible, I'd settle for App.log.yyyy-MM-dd.counter
This is my current appender configuration:
<appender name="File" type="log4net.Appender.RollingFileAppender">
<file value="App.log"/>
<rollingStyle value="Date"/>
<datePattern value=".yyyy-MM-dd_HH-mm-ss"/>
<staticLogFileName value="false"/>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
</appender>
But it creates a random number of files based on the date and time.
I assume that the application should create only one log file every time it runs, so you do not need a rolling file appender (though my solution would apply for rolling file appenders as well):
<appender name="FileAppender" type="log4net.Appender.FileAppender">
<file type="log4net.Util.PatternString" value="c:\temp\App-%date{yyyy-MM-dd_HH-mm-ss}.log" />
<appendToFile value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%2thread] %-5level - %message%newline" />
</layout>
</appender>
(Obviously you can use other your own layout and other settings for the file appender.)
Also note that you can set your rolling style as
rollingstyle="Once"
and it will create a new file every time it is run. If staticLogFileName is set to true (e.g., logname.log) the previous logs will be set to logname.log.1, logname.log.2, etc.
The number of files kept before overwriting the oldest (say, 10) can be controlled by setting
maxSizeRollBackups="10"
Edit:
My config, which creates a datestamped log per execution (unless one exists, in which case it follows the .1 rule, looks like this:
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="Logs\MyLog-%date{dd-MM-yyyy}.log" />
<appendToFile value="false" />
<maxSizeRollBackups value="-1" /> <!--infinite-->
<staticLogFileName value="true" />
<rollingStyle value="Once" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5level %date [%thread] %c{1} - %m%n" />
</layout>
</appender>
Not 100% sure if I need appendToFile="false" as the docs say that's done automatically when you use rollingStyle="Once", but this makes it clearer in any case.
It's documented from apache in the log4net docs at:
https://logging.apache.org/log4net/release/config-examples.html
ctrl+f for "per program execution"
<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>