SocketAppender and PatternLayout

appender, log4j, logging

Solution

It seems that SocketAppender don't use a layout.

SocketAppenders do not use a layout. They ship a serialized LoggingEvent object to the server side.

See documentation here

So I use a SyslogAppender to replace. It's not perfect because of unused possibilies (like facility and priority) but works fine.

Problem

I have a logger that send log to a log server storage. This work fine but the patternlayout isn't used. With or without that doesn't change anything. I believe remember to read somewhere that socketappender use is own pattern and not others. ``` <appender name="LOGSTASH" class="org.apache.log4j.net.SocketAppender"> <param name="Port" value="5000"/> <param name="RemoteHost" value="192.168.81.131"/> <param name="ReconnectionDelay" value="5000"/> <param name="LocationInfo" value="true" /> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n" /> </layout> </appender> ``` But on this documentation (and a few other) thay use this. Example from this doc : ``` <appender name="A1" class="org.apache.log4j.net.SocketAppender"> <param name="RemoteHost" value="localhost"/> <param name="Port" value="5000"/> <param name="LocationInfo" value="true"/> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%t %-5p %c{2} - %m%n"/> </layout> </appender> ``` So is it impossible to use personnal pattern with socketappender or is it my fault? If it's impossible is there an alternative appender for tcp logging with custom pattern?

Original source