Log4net - modify logging levels for individual logger and appender combinations -


i have 2 appenders, 1 (infoappender) levelmin info filter , 1 (debugappender) without filter. works great. can set minimum logging levels individual loggers using element. want have loggers logging info (and above) infoappender , debug (and above) debugappender, chatty logger (nhibernate) logging warn (and above) infoappender , info (and above) debugappender.

i looked @ solution provided in log4net logging of 2 different levels 2 different appenders same logger, doesn't work me. have following configuration:

<log4net>   <appender name="infoappender" type="log4net.appender.rollingfileappender">     <file value="c:\logs\" />     <appendtofile value="true" />     <rollingstyle value="date" />     <datepattern value="'info.'yyyy-mm-dd'.log.txt'"/>     <staticlogfilename value="false" />     <layout type="log4net.layout.patternlayout">       <conversionpattern value="%date [%thread] %-5level %logger - %message%newline" />     </layout>     <filter type="log4net.filter.levelrangefilter">       <levelmin value="info" />     </filter>   </appender>   <appender name="debugappender" type="log4net.appender.rollingfileappender">     <file value="c:\logs\" />     <appendtofile value="true" />     <rollingstyle value="date" />     <datepattern value="'debug.'yyyy-mm-dd'.log.txt'"/>     <staticlogfilename value="false" />     <layout type="log4net.layout.patternlayout">       <conversionpattern value="%date [%thread] %-5level %logger - %message%newline" />     </layout>   </appender>   <logger name="nhibernate" additivity="false">     <appender-ref ref="infoappender">       <threshold value="warn" />     </appender-ref>     <appender-ref ref="debugappender">       <threshold value="info" />     </appender-ref>   </logger>   <root>     <level value="debug" />     <appender-ref ref="infoappender" />     <appender-ref ref="debugappender" />   </root> </log4net>

i have following test code:

        xmlconfigurator.configure();         var logger1 = logmanager.getlogger("program");         var logger2 = logmanager.getlogger("nhibernate");         logger1.debug("debug message");         logger2.debug("debug message");         logger1.info("info message");         logger2.info("info message");         logger1.warn("warn message");         logger2.warn("warn message");

but both debug messages logged debugappender , both info messages logged infoappender.

the configuration mechanism of log4net quite lenient doesn't tell when parameters not taken account. example in configuration following references appender infoappender threshold property doesn't anything

 <appender-ref ref="infoappender">     <threshold value="warn" />   </appender-ref>

no parsing of xml element below appender-ref node occur, put won't taken account:

protected void parsechildrenofloggerelement(xmlelement catelement, logger log, bool isroot) // code ommited         if (xmlelement.localname == "appender-ref")         {             iappender appender = this.findappenderbyreference(xmlelement);             string attribute = xmlelement.getattribute("ref");             if (appender != null)             {                 loglog.debug(string.concat(new string[]                 {                     "xmlhierarchyconfigurator: adding appender named [",                     attribute,                     "] logger [",                     log.name,                     "]."                 }));                 log.addappender(appender);             }             else             {                 loglog.error("xmlhierarchyconfigurator: appender named [" + attribute + "] not found.");             }         }

what need add filter between logger , final appender. recommend using forwardingappender lets pass log events between appenders while adding behavior: change nhibernate section of config file this:

<appender name="nhibernatedebugfilterappender" type="log4net.appender.forwardingappender">   <appender-ref ref="debugappender"/>   <filter type="log4net.filter.levelrangefilter">     <levelmin value="info" />   </filter> </appender>  <appender name="nhibernateinfofilterappender" type="log4net.appender.forwardingappender">   <appender-ref ref="infoappender"/>   <filter type="log4net.filter.levelrangefilter">     <levelmin value="warn" />   </filter> </appender>  <logger name="nhibernate" additivity="false">   <appender-ref ref="nhibernateinfofilterappender" />   <appender-ref ref="nhibernatedebugfilterappender"/> </logger>

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