I have the following log4net configuration
<log4net debug="true">
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="Logs\\CurrentLog.txt"/>
<appendToFile value="true"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline"/>
</layout>
</appender>
<root>
<priority value="ALL"/>
<appender-ref ref="RollingLogFileAppender"/>
</root>
</log4net>
Is it possible to log the events from a different assembly in a different file? For example, messages from
Castle.Facilities.NhibernateIntegration
If not that, is there a better way of filtering the events?
I do not want to limit the stream to only errors.
Loggers can be configured by their names. If you're following idiomatic log4net practices, your loggers are named by their full Namespace.TypeName. You can assign appenders to loggers in two ways.
The first is to embed the special appender directly
<logger name="Castle.Facilities.NhibernateIntegration">
<level value="INFO" />
<appender name="CastleNhIntegrationAppender" type="...">
<!-- put the full appender configuration here -->
</appender>
</logger>
Or to define the appender and reference it in the logger
<appender name="CastleNhIntegrationAppender" type="...">
<!-- put the full appender configuration here -->
</appender>
<logger name="Castle.Facilities.NhibernateIntegration">
<level value="INFO" />
<appender-ref ref="CastleNhIntegrationAppender" />
</logger>
Related
Can someone clue me in to how I might configure Log4net to help with more verbose debugging?
Currently I have a project where I would like to use a Log4Net appender to log to Splunk.
There exists a NuGet package that seems popular: https://github.com/AlanBarber/log4net.Appender.Splunk
Only there is some problem with the URL and I can't figure out how configure either Log4Net or the appender to help me understand what is wrong with my config.
Here is my config:
<configuration>
<log4net>
<appender name="Console" type="log4net.Appender.ConsoleAppender">
<threshold value="DEBUG" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="Console Logger: %date %-5level: %message%newline" />
</layout>
</appender>
<appender name="Splunk" type="log4net.Appender.Splunk.SplunkHttpEventCollector, log4net.Appender.Splunk">
<ServerUrl>https://my_trial_cloud_splunk_server_name.cloud.splunk.com:8088/services/collector</ServerUrl>
<Token>de63d82e-6f5d-4f72-a03c-018d462c30c8</Token>
<RetriesOnError>10</RetriesOnError>
<BatchIntevalMs>100</BatchIntevalMs>
<BatchSizeCount>10</BatchSizeCount>
<SendMode>Parallel</SendMode>
<IgnoreCertificateErrors>True</IgnoreCertificateErrors>
<threshold value="DEBUG" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5level [%thread]: %message%newline" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="Console" />
<appender-ref ref="Splunk" />
</root>
</log4net>
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
</configuration>
I've set the log4net debug to true. Only, even if I have the wrong URL I don't see any log information saying there was trouble with the Splunk endpoint. How do I get more verbose debugging that there is some issue?
I've got the following configuration using log4net. The problem is that the logger in my C# code is now logging the errors into the two log files. I've got two different service classes in the same windows service. I initialize the logger in one service using this line:
private static readonly ILog _logger = LogManager.GetLogger(typeof(EmployeeImportService));
But when this service runs and logs, it's writing to both log files.
<log4net>
<appender name="LogFileAppender" type="log4net.Appender.FileAppender">
<param name="File" value="C:\Temp\HRFiles\Sharp\Log\Log.txt" />
<param name="AppendToFile" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
</layout>
</appender>
<appender name="OvertimeLogFileAppender" type="log4net.Appender.FileAppender">
<param name="File" value="C:\Temp\HRFiles\YTD\Log\Log.txt" />
<param name="AppendToFile" value="true" />
<layout type="log4net.Layout.PatternLayout">
<param name="ConversionPattern" value="%d [%t] %-5p %c %m%n" />
</layout>
</appender>
<root>
<level value="ALL" />
<appender-ref ref="LogFileAppender" />
<appender-ref ref="OvertimeLogFileAppender" />
</root>
</log4net>
How do I configure it so that each service writes to it's own log file? I read that the logger tag in the configuration has an additivity attribute that solves this problem but I have no logger element in my configuration.
You can have two separate loggers, and define which appenders each logger will use in the configuration: you do have to declare additivity=false or else the loggers inherit the appenders from the root logger.
So, with made-up names:
<root>
<level value="ALL" />
<appender-ref ref="LogFileAppender" />
<appender-ref ref="OvertimeLogFileAppender" />
</root>
<logger name="Company.Project.EmployeeImportService" additivity="false">
<appender-ref ref="LogFileAppender" />
</logger>
<logger name="Company.Project.EmployeeOvertimeService" additivity="false">
<appender-ref ref="OvertimeLogFileAppender" />
</logger>
Then in your service classes you get the approppriate logger:
// General log - EmployeeImportService
ILog logger = LogManager.GetLogger(typeof(EmployeeImportService));
// Log overtime - EmployeeOvertimeService
ILog logger = LogManager.GetLogger(typeof(EmployeeOvertimeService));
Oups yes I did a mistake. But it quiet the same. You have to create filter in each appender node
<filter type="log4net.Filter.LoggerMatchFilter">
<!-- allows this sub-namespace to be logged... -->
<loggerToMatch value="EmployeeImportService" />
</filter>
I would like to know if it's possible to override a log4net appender threshold.
Default threshold level for the appender is ERROR, but for some namespaces i would like to log INFO as well, e.g. program start/stop info messages.
For example override the log level like this.
<appender name="Console" type="log4net.Appender.ConsoleAppender">
<threshold value="ERROR"/>
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%level %thread %logger - %message%newline" />
</layout>
<logger name="My.Main.Program">
<level value="INFO" />
</logger>
</appender>
Thanks in advance.
I have a config file with two appenders, one file appender and one database appender. I want to log everything to the file appender, and only log exceptions to the database appender. When setting up both appenders in the section it logs fine but all log events are sent to both appenders, which is not what i want.
I changed the configuration but with this current configuration, exceptions get logged to the database, and nothing is getting written to the file appender. Can anyone tell me why I am not getting anything written to the file appender?
<log4net debug="true">
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<file value="C:\Log4net\Workflow\TestLog.txt" />
<threshold value="All" />
<appendToFile value="true" />
<rollingStyle value="Size" />
<maxSizeRollBackups value="10" />
<maximumFileSize value="10KB" />
<staticLogFileName value="true" />
<layout type="log4net.Layout.PatternLayout">
<conversionPattern value="%-5p {%logger} %d %5rms %-22.22c{1} %-18.18M - %m%n" />
</layout>
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<!-- Removed to keep this snippet simple-->
</appender>
<root>
<level value="Error" />
<appender-ref ref="AdoNetAppender" />
</root>
<logger name="AllLogs">
<level value="ALL" />
<appender-ref ref="RollingLogFileAppender" />
</logger>
</log4net>
What you have here is the following:
all logs events with the level Error or more will go to the AdoNetAppender
all logs events originating from a logger whose name is based on AllLogs will go to the RollingLogFileAppender
From what I understand you want all logs to default to the file, and only error ones to go also to the database. Then simply add both appenders to your root logger so that both get all events, and add filters to only let filters you're interested in pass through: a level range filter on your database appender would work
<log4net debug="true">
<appender name="RollingLogFileAppender" type="log4net.Appender.RollingFileAppender">
<!-- rest of config snipped to save space -->
</appender>
<appender name="AdoNetAppender" type="log4net.Appender.AdoNetAppender">
<filter type="log4net.Filter.LevelRangeFilter">
<levelMin value="ERROR" />
<levelMax value="FATAL" />
</filter>
<!-- rest of config snipped to save space -->
</appender>
<root>
<appender-ref ref="AdoNetAppender" />
<appender-ref ref="RollingLogFileAppender" />
</root>
</log4net>
Of course if you don't want any duplicate just filter errors and above in the rolling file appender
I am new to log4net. Here is my app.config. What is happening is at a point after going through a switch statement, my logger "X" stops writing to my log file. I tried x.Logger.Repository.Shutdown();, and all that does is stop my "Y" from even logging. My suspicion is that the file is in use, and can't be written to (the next logging statement does begin in a different class. Again, I'm new. Basically, it writes about 10 lines, goes to another class with a logger of the same name, works in that class for a few more lines, and then when it goes back to the original class, it stops logging. I'm a little lost. P.S. I have the correct section name, and I am calling my log as such:
private static readonly ILog eventLog = LogManager.GetLogger("EventLog");
<appender type="log4net.Appender.FileAppender" name="event">
<file value="C:X.log" />
<layout type="log4net.Layout.PatternLayout">
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<conversionpattern value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<appender type="log4net.Appender.FileAppender" name="cLog">
<file value="Y.log" />
<layout type="log4net.Layout.PatternLayout">
<lockingModel type="log4net.Appender.FileAppender+MinimalLock" />
<conversionpattern value="%d [%t] %-5p %c - %m%n" />
</layout>
</appender>
<logger name="EventLog">
<level value="INFO" />
<maximumfilesize value="256KB" />
<param value="INFO" name="Threshold" />
<appender-ref ref="event" />
</logger>
<logger name="crLog">
<level value="INFO" />
<maximumfilesize value="256KB" />
<param value="INFO" name="Threshold" />
<appender-ref ref="cLog" />
</logger>
As it turns out, when you call x.Logger.Repository.Shutdown(); it kills any logs that you might want to write to at that point in time.
I will either move x.Logger.Repository.Shutdown(), or find a different method for releasing my files so the last portion of my app can use (email) the file.