With the config:
<file value="C:\\MyLog"/>
<datePattern value="yyyyMMdd'.log'" />
I can get the historical log named like "Mylog20120529.log".
I wonder whether i can get the log named like "20120529.log".
THX guys
Apply a trick here and it will do the job.
<file value="C:\\MyLog\20"/>
<datePattern value="yyMMdd'.log'" />
Related
I have log4Net set up with the following config settings in a web service web.config file:
<log4net>
<!-- RollingFile is set to be a File Appender -->
<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
<file value="c:\temp\Sync.log" />
<appendToFile value="true" />
<maximumFileSize value="50MB" />
<maxSizeRollBackups value="10" />
<datePattern value="yyyyMMdd" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date %-5level %-50logger - %message%newline%newline" />
</layout>
</appender>
<!-- Set root logger level to DEBUG to have all log -->
<root>
<level value="INFO" />
<appender-ref ref="RollingFile" />
</root>
The issue I am having is when I look in temp I see 17 files
Sync.Log
Sync.log20180424.log
(other sync files with dates)
...
the last one being
Sync.log20180405
I am confused as to why it is not removing the ones beyond 10 days as stated by the maxSizeRollBackups.
I know that by default the is rollingStyle = composite.
With my current config, how would it behave if I let it go?
And as a second - what am I missing in my current settings.
Thanks. I know there are similar questions out there but in reading them I feel like I am still missing something.
It turns out that what I was trying to do is not possible.
As stated in other places:
A maximum number of backup files when rolling on date/time boundaries is not supported.
Because of this, I took the date portion out so that the backups roll by size only. After doing that I did not have the same issues. I don't like the file name as much but it is still easy enough to track them based on their file properties having the date last edited.
I have a problem with the log output in a single file by using MPI (Message Passing Interface) into my app (write in C#) and log4net. The log output works fine when my app a little time works but when the app start created log4net sometimes not one log file but two or three log files. Here a example:
Properly (App start and log4net build one log file):
Log_2014_02_25_[12.39.07]_Build_2014_02_25
Wrong (App start and log4net build three log files):
Log_2014_02_25_[12.12.03]_Build_2014_02_25
Log_2014_02_25_[12.12.03]_Build_2014_02_252014_02_25
Log_2014_02_25_[12.12.03]_Build_2014_02_252014_02_25252014_02_25
I think log4net tries exactly at the same time to write something in the log file. If that coincidentally happens is the log file locked and log4net cannot in the same log file write. In this case created log4net probably created a new log file. In short, I think the problem is the Minimal Lock from log4net but I'm not sure and not know how I can solve the error.
Here my log4net config:
<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="Logs\%property{LogFileName}.log"/>
<appendToFile value="true" />
<rollingStyle value="Date" />
<datePattern value="yyyy_MM_dd" />
<staticLogFileName value="false" />
<preserveLogFileNameExtension value="true"/>
<lockingModel type="log4net.Appender.FileAppender+MinimalLock"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date{dd.MM.yyyy HH:mm:ss} - %message%newline" />
</layout>
</appender>
var fileName = string.Format("Log_{0}_[{1}]_Build_",
DateTime.Now.ToString("yyyy_MM_dd"), DateTime.Now.ToString("HH.mm.ss")); //
GlobalContext.Properties["LogFileName"] = fileName;
log4net.Config.XmlConfigurator.Configure();
Thx for all help.... :)
you are using a minimal lock.
try:
<lockingModel type="log4net.Appender.FileAppender+InterProcessLock" />
I've got an internal app which is using log4net for logging. I'd like the logs to be generated at %LOCALAPPDATA%\Vendor\App\application.log. Unfortunately, log4net is creating the log file at %APPDATA% instead. It's not a huge problem, because we really don't use roaming profiled here, but I don't like leaving little idiosyncrasies in my code if I can avoid it.
Any thoughts on how to get the file written to the location I specified without configuring log4net programattically and using pinvoke to get the path for XP?
Here's the appender section of my config file if it's any help:
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="${LOCALAPPDATA}\Vendor\App\application.log" />
<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%newline%message%newline" />
</layout>
</appender>
VERY late to the party here but I just came across this and the found the answer.
Seems you can use log4net.Util.PatternString to insert environment variables into the file path. So the OP's example becomes:
<appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">
<file type="log4net.Util.PatternString" value="%env{LOCALAPPDATA}\Vendor\App\application.log" />
<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%newline%message%newline" />
</layout>
</appender>
Add type="log4net.Util.PatternString" to the file element and then specify the %env pattern specifier followed by the environment variable name in curly brackets.
If this isn't working, it would imply your environment variable is wrong.
Log4net does not have anything special in it to handle either appdata or localappdata. All it does is call System.Environment.GetEnvironmentVariables() to return a hashtable and performs substitution based on whatever values that returns.
And for everybody, that had the same problems as me:
doesnt get this to work even when using different cases: (e.g. LocalAppData, LOCALAPPDATA, localappdata)
can not use "util.PatternString" because config is done in code and not the log4net.config file
This can give you local app data or whatever enviroment variable path you want. Use lower case, e.g. "localappdata"!! Returns empty.string when it could not find it.
private static string GetLocalAppDataPath()
{
foreach (DictionaryEntry environmentVariable in Environment.GetEnvironmentVariables())
{
var environmentVariableString = environmentVariable.Key as string;
if (environmentVariableString?.ToLower() == "localappdata")
return (string) environmentVariable.Value;
}
return string.Empty;
}
I have the following working config:
<appender name="RollingFile" type="log4net.Appender.RollingFileAppender">
<file value=".\\App_Data\\log.txt" />
I want to have the log file appear like this
log.2012-11-28.txt
log.2012-11-29.txt
And so on. Notice the .txt at the end.
How do I change the file value in the config to do that?
Add this to appender configuration, please make sure that you don't have other rollingStyle added
<rollingStyle value="Date" />
<datePattern value="'log.'yyyy-MM-dd'.txt'" />
I got this:
<appender name="iOsClients_Error" type="log4net.Appender.RollingFileAppender">
<file value="Logs/errors/error_"/>
<appendToFile value="true"/>
<rollingStyle value="Date"/>
<datePattern value="yyyyMMdd" />
<staticLogFileName value="false"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%newline%newline%date [%thread] %-5level - %message%newline%newline%exception%newline%newline"/>
</layout>
</appender>
This will create a log file like: error_20110801
How can I get log4net to output text files or how can I get log4net to add the .txt file extension to these files?
I want this: error_20110801.txt
You can use something like this to accomplish that:
<file type="log4net.Util.PatternString" value="Logs/errors/error_%date{yyyyMMdd}.txt" />
They key here is to use the PatternString
The problem with
<file type="log4net.Util.PatternString" value="Logs/errors/error_%date{yyyyMMdd}.txt" />
is that if the server doesn't restart every day, the file will have the same date, so the same name. And the archived file will be like error_20130101.txt20130101 .
The solution to this is here actually : Setting a log file name to include current date in Log4j