Quiet new to log4net appender.
I have created a new log4net appender which I would like to get called only if the level is Warn or Fatal or Error.
I tried below but doesn't seem to be working i.e. it gets called for Info as well.
<root>
<priority value="ERROR" />
<appender-ref ref="MyBrandNewAppender" />
</root>
Also what's the difference between above and below:
<logger name="bla" additivity="false">
<level value="ERROR" />
<appender-ref ref="MyBrandNewAppender" />
</logger>
Thanks
In the root tag you are using priority.
<priority value="ERROR" />
I am using level which works for me.
<level value="ERROR" />
Related
Following configuration logs to Eventlog and it works for SmtpSender. But the filelogger does not log, it creates the log file in the path, but does not do any debug logs.
<root>
<level value="DEBUG" />
<appender-ref ref="EventLogAppender" />
</root>
<logger additivity="false" name="SmtpLogger">
<level value="FATAL"/>
<appender-ref ref="SmtpAppender" />
</logger>
<logger name="RollingFileAppender">
<level value="DEBUG"/>
<appender-ref ref="RollingFileAppender"/>
</logger>
But when I change the root logger to RollingFileAppender it logs to file,
<root>
<level value="DEBUG" />
<appender-ref ref="RollingFileAppender" />
</root>
<logger additivity="false" name="SmtpLogger">
<level value="FATAL"/>
<appender-ref ref="SmtpAppender" />
</logger>
<logger name="RollingFileAppender">
<level value="DEBUG"/>
<appender-ref ref="RollingFileAppender"/>
</logger>
Any idea why this happens? How can I get file logger working in this scenario.
You did not post the appender confuriguration, however the easiest way to figure out what goes wrong is enable internal debugging. This will tell you what goes wrong in the rolling file appender:
There are 2 different ways to enable internal debugging in log4net.
These are listed below. The preferred method is to specify the
log4net.Internal.Debug option in the application's config file.
• Internal debugging can also be enabled by setting a value in the
application's configuration file (not the log4net configuration file,
unless the log4net config data is embedded in the application's config
file). The log4net.Internal.Debug application setting must be set to
the value true. For example:
<?xml version="1.0" encoding="utf-8" ?>
<configuration>
<appSettings>
<add key="log4net.Internal.Debug" value="true"/>
</appSettings>
</configuration>
This setting is read immediately on startup an will cause all internal
debugging messages to be emitted.
• To enable log4net's internal debug programmatically you need to set
the log4net.Util.LogLog.InternalDebugging property to true. Obviously
the sooner this is set the more debug will be produced.
Internal debugging messages are written to the console and to the
System.Diagnostics.Trace system. If the application does not have a
console the messages logged there will be lost. Note that an
application can redirect the console stream by setting the
System.Console.Out. The Trace system will by default send the message
to an attached debugger (where the messages will appear in the output
window). If the process does not have a debugger attached then the
messages are sent to the system debugger. A utility like DebugView
from http://www.sysinternals.com may be used to capture these
messages.
As log4net internal debug messages are written to the
System.Diagnostics.Trace system it is possible to redirect those
messages to a local file. You can define a trace listener by adding
the following to your application's .config file:
<configuration>
...
<system.diagnostics>
<trace autoflush="true">
<listeners>
<add
name="textWriterTraceListener"
type="System.Diagnostics.TextWriterTraceListener"
initializeData="C:\tmp\log4net.txt" />
</listeners>
</trace>
</system.diagnostics>
...
</configuration>
Make sure that the process running your application has permission to write to this file.
log4net faq
I managed to get the logging work, in fact I did this as an experiment and it worked.
Added RollingFileAppender to the root element,
<root>
<level value="DEBUG" />
<appender-ref ref="EventLogAppender" />
<appender-ref ref="RollingFileAppender"/>
</root>
<logger additivity="false" name="SmtpLogger">
<level value="FATAL"/>
<appender-ref ref="SmtpAppender" />
</logger>
<logger name="RollingFileAppender">
<level value="DEBUG"/>
<appender-ref ref="RollingFileAppender"/>
</logger>
I want to log debug ,info and error message of Nhibernate.SQL. I am not able to log all the messages.
Can i use config as below?
<logger name="NHibernate.SQL">
<level value="DEBUG" />
</logger>
<logger name="NHibernate.SQL">
<level value="INFO" />
</logger>
<logger name="NHibernate.SQL">
<level value="ERROR" />
</logger>
or do I need to use as below?
<logger name="NHibernate.SQL">
<level value="DEBUG" />
<level value="INFO" />
<level value="ERROR" />
</logger>
The level supplied to a logger is the minimum level to log, so you just need this to log DEBUG or above:
logger name="NHibernate.SQL">
<level value="DEBUG" />
</logger>
Note that this will also log any WARN or FATAL log entries.
I have two appenders, file and console, in my project. I would like to configure my application to perform as such:
all loggers with name "my.app.*":
1. log events DEBUG and higher to fileA
2. log events DEBUG and higher to fileB
all other loggers:
1. log events WARN and higher to fileA
2. log events DEBUG and higher to fileB
Ideally, the configuration would look something like this:
<log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/">
<appender name="fileA" class="org.apache.log4j.FileAppender">
<!-- configuration -->
</appender>
<appender name="fileB" class="org.apache.log4j.FileAppender">
<!-- configuration -->
</appender>
<logger name="my.app" additivity="false">
<level="DEBUG"/>
<appender-ref ref="fileA"/>
</logger>
<logger name="" additivity="true">
<level="DEBUG"/>
<appender-ref ref="fileB"/>
</logger>
<root>
<level="WARN"/>
<appender-ref ref="fileA"/>
</root>
</log4j>
However, this setup causes loggers named "my.app" to only log to console, and all other loggers to log to console on WARN and above. Essentially, <logger name=""> is being ignored. Is there another way to emulate this behavior with log4j?
PS. I apologize for the poor formatting, really struggling to get this to work tonight :/
You need:
<logger name="my.app" additivity="false">
<level="DEBUG"/>
<appender-ref ref="console"/>
<appender-ref ref="file"/>
</logger>
<root>
<appender-ref ref="console-warn"/>
<appender-ref ref="file-debug"/>
</root>
For the root-appender you need two new console/file appenders, that have the desired level restrictions.
<appender name="file-debug" class="org.apache.log4j.FileAppender">
<param name="Threshold" value="DEBUG"/>
</appender>
<appender name="console-warn" class="org.apache.log4j.ConsoleAppender">
<param name="Threshold" value="WARN"/>
</appender>
I am trying to enable logging of incoming HTTP headers on my server which uses Axis2, is there a way to do it via log4j?
Axis2 uses Apache Commons Logging, a pluggable logging API. Now the question is: which logging library does your server use? If it's log4j, then you probably can make it log the Axis2 traffic — try setting
log4j.logger.org.apache.axis2.transport.http.server.wire=DEBUG
in the log4j.properties file of the application server.
If your server uses other lib, however, redirecting axis output to log4j may involve playing with classloaders as described in Commons Logging FAQ — so that Commons Logging and Log4j are loaded by the same classloader, you'll need to deploy both libraries with your EAR and reverse classloading policy to "parent last". Chances are other libraries from your application won't run with this setting.
I know it is old post, but I would like to share my solution to help other as I just faced the same case recently. I have configured the following in log4j.xml
<appender name="fileout" class="org.apache.log4j.DailyRollingFileAppender">
<param name="file" value="/soapLog/axis2.log" />
<param name="DatePattern" value="'.'yyyy-MM-dd" />
<layout class="org.apache.log4j.PatternLayout">
<param name="ConversionPattern" value="[%p] %m%n" />
</layout>
</appender>
<logger name="org.apache.axis2.enterprise">
<level value="debug" />
<appender-ref ref="fileout" />
</logger>
<logger name="de.hunsicker.jalopy.io">
<level value="debug" />
<appender-ref ref="fileout" />
</logger>
<logger name="httpclient.wire">
<level value="debug" />
<appender-ref ref="fileout" />
</logger>
<logger name="org.apache.commons.httpclient">
<level value="debug" />
<appender-ref ref="fileout" />
</logger>
<logger name="org.apache.axis2.transport.http.server.wire">
<level value="debug" />
<appender-ref ref="fileout" />
</logger>
Hope this may help.
I am getting duplicate lines in my log output with the following web.config entries:
<root>
<priority value="Off"/>
<appender-ref ref="FileAppender"/>
</root>
<logger name="SessionMgr">
<priority value="ALL" />
<appender-ref ref="FileAppender" />
</logger>
If I take the element out I get nothing, as I expect. But, adding the element results in ever line duplicated.
What am I not understanding?
I would try this instead:
<root>
<priority value="Off"/>
<appender-ref ref="FileAppender"/>
</root>
<logger name="SessionMgr">
<priority value="ALL" />
</logger>
Your root logger already tells you to log to FileAppender. You shouldn't need to add it in your SessionMgr logger. You can also see this article for more details:
Eliminate duplicate logging in log4net