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>
Related
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>
I must be doing something stupid but I can't think of it (I believe the core of my problem is that the PatternString is not dynamic and it gets set once when the program starts). Here is my lognet.config file:
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="F:\Logs\MonitorService_%date{yyyyMMdd}.log" />
<appendToFile value="true" />
<rollingStyle value="Composite" />
<datePattern value="yyyyMMdd" />
<maxSizeRollBackups value="5" />
<maximumFileSize value="3000MB" />
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="DEBUG" />
<levelMax value="FATAL" />
</filter>
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c :: %m%n" />
</layout>
</appender>
It seems like the files are coming out in a screwed up manner as:
F:\Logs\MonitorService_20170212.log
F:\Logs\MonitorService_20170212.log20170613
F:\Logs\MonitorService_20170212.log20170614
I would like them to come out as follows when they roll from day to day:
F:\Logs\MonitorService_20170612.log
F:\Logs\MonitorService_20170613.log
F:\Logs\MonitorService_20170614.log
What am I doing wrong?
There's no need to put the date in the file element's value.
The datePattern element determines the suffix applied to a log file when a new log file is created.
<file type="log4net.Util.PatternString" value="F:\Logs\MonitorService" />
<datePattern value="_yyyyMMdd" />
Here, the current log file will be called 'MonitorService' and when it is rolled on, the file will be renamed 'MonitorService_20170622' and a new file called 'MonitorService' will be created to store new log messages.
I'm using log4net to log things. In my web application, the Web.config file contains the following section:
<appender name="FileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="\\PathWhereThingsAreLogged\%property{HostName}-NameOfTheApplication" />
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<appendToFile value="true" />
<maximumFileSize value="10MB"/>
<maxSizeRollBackups value="5" />
<rollingStyle value="Size" />
<rollingMode value="Size" />
<datePattern value=".yyyy-MM-dd'.log'" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date (%file:%line) %-5level - %message%newline" />
</layout>
</appender>
Logs appear in the file, so that's cool, but sadly the name of the file is incorrect. Its name is "(null)-NameOfTheApplication" instead of using the %property{HostName} declared in the file declaration.
Any help would be appreciated, thanks!
Actually, properties must be declared beforehand!
In a web application, put that in your Global.asax.cs file, in the Application_Start() method:
GlobalContext.Properties["HostName"] = Environment.MachineName;
In a windows service or a job, put it in the Program.cs in the Main(string[] args) method.
I have the following Log4Net config:
<appender name="WSLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="${APPDATA}\xxxx"/>
<evaluator type="log4net.Core.LevelEvaluator,log4net">
<threshold value="WSLog" />
</evaluator>
<filter type="log4net.Filter.LevelMatchFilter">
<levelToMatch value="WSLog" />
</filter>
<filter type="log4net.Filter.DenyAllFilter" />
<bufferSize value="1"/>
<appendToFile value="true"/>
<rollingStyle value="Size"/>
<datePattern value="yyyyMMdd"/>
<MaxSizeRollBackups value="7"/>
<StaticLogFileName value="true"/>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<maximumFileSize value="5MB"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern
value="%newline__________________________________________________________%newlineTime:%utcdate%newline%newline%message%newline"/>
</layout>
</appender>
This works just fine until I have a huge string that needs to be logged. For example, if the string is about 8000 chars, Log4Net simply avoids writing it. It doesn't even write it truncated.
Is there a way to get large string logged (fully or even truncated)?
Have you tried enabling log4net's internal debugging to see if log4net is throwing an error
I tried a test program and it has no problem logging something like
log.Debug("Begin".PadRight(16000, '*') + "End");
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>