Based on your configuration it looks like you are targeting Log4j 1. There is not much point to that as all our development efforts have been focused on Log4j 2.
Ralph On Jun 19, 2014, at 9:14 AM, Benjamin Friedrich <benjamin.friedr...@zalando.de> wrote: > Hi, > > I am implementing a new FileAppender which I would like to contribute to the > community. Please let me know if it would be interesting for you and how I > could submit my implementation. > > The appender allows you to log messages of a specific level (see Threshold > parameter). However, if a LoggingEvent with level >= ERROR occurs, all > related lower level messages are printed out as well. > > For this reason, I am going to write a FileAppender which extends > DailyRollingFileAppender and > > - writes out all logging messages as configured > - buffers (buffer size is configurable) all messages from the lower level > including the LoggingEvent which are logged out anyway (to provide better > context) > - and outputs the entire buffer when a log message with level >= ERROR occurs > > The buffer is cleared whenever a context switch (NDC) occurs. > > > The configuration might look as follows: > > > <log4j:configuration xmlns:log4j="http://jakarta.apache.org/log4j/";> > > <appender name="default" > class="de.zalando.log.backend.appender.BufferingFileAppender"> > <param name="File" value="application.log"/> > <param name="Append" value="true"/> > <param name="encoding" value="UTF-8"/> > <param name="encoding" value="UTF-8"/> > <param name="Threshold" value="INFO“/> <!-- determines logging > level of appender -> control what data received from the logger should be > print out as usual + DEBUG is default --> > <param name="BufferLevels" value="DEBUG"/> <!-— comma separated list > of levels which should be buffered > determines which data > should be logged until ERROR or FATAL occurs > NOTE: level > specified in Threshold does not have to be specified + DEBUG is default --> > <param name=„BufferSize“ value="10000“ <!— up to 10000 recent > messages are buffered > NOTE: 1000 is default —> > > <layout class="org.apache.log4j.PatternLayout"> > <param name="ConversionPattern" value="%d %x %p %t %l: %m%n"/> > </layout> > </appender> > > <root> > <priority value="DEBUG"/> <!-- LEVEL of the logger -> level > determines which logging events reach the appender --> > <appender-ref ref="default" /> > </root> > </log4j:configuration> > > Best regards, > Benni > > > -- > > Benjamin Friedrich > Java Developer > Logistics - Outbound > > > Zalando AG > > POSTANSCHRIFT > Zalando SE > 11501 Berlin > > STANDORT > Zalando SE > Sonnenburger Str. 73 > 10437 Berlin > Germany > > Fax: +493027594693 > E-Mail: benjamin.friedr...@zalando.de > Web: www.zalando.de > Jobs: jobs.zalando.de > > Zalando SE, Tamara-Danz-Straße 1, 10243 Berlin > Handelsregister: Amtsgericht Charlottenburg, HRB 158855 B > Steuer-Nr. 37/125/21423 * USt-ID-Nr. DE 260543043 > Vorstand: Robert Gentz, David Schneider, Rubin Ritter > Vorsitzende des Aufsichtsrates: Cristina Stenbeck > Sitz der Gesellschaft: Berlin > > >
