C.2. Separate Log Files Per Application
To segregate logging output per application, assign log4j categories to specific appenders. This is typically done in the
conf/log4j.xml
deployment descriptor.
Example C.2. Filtering App1 Log Output to a Separate File
<appender name="App1Log" class="org.apache.log4j.FileAppender"> <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"></errorHandler> <param name="Append" value="false"/> <param name="File" value="${jboss.server.home.dir}/log/app1.log"/> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n"/> </layout> </appender> ... <category name="com.app1"> <appender-ref ref="App1Log"></appender-ref> </category> <category name="com.util"> <appender-ref ref="App1Log"></appender-ref> </category>
Example C.3. Using TCLMCFilter
Enterprise Platform 5.1 includes the new class
jboss.logging.filter.TCLMCFilter
, which allows you to filter based on the deployment URL.
<appender name="App1Log" class="org.apache.log4j.FileAppender"> <errorHandler class="org.jboss.logging.util.OnlyOnceErrorHandler"></errorHandler> <param name="Append" value="false"/> <param name="File" value="${jboss.server.home.dir}/log/app1.log"/> <layout class="org.apache.log4j.PatternLayout"> <param name="ConversionPattern" value="%d{ABSOLUTE} %-5p [%c{1}] %m%n"/> </layout> <filter class="org.jboss.logging.filter.TCLMCFilter"> <param name="AcceptOnMatch" value="true"/> <param name="DeployURL" value="app1.ear"/> </filter> <!-- end the filter chain here --> <filter class="org.apache.log4j.varia.DenyAllFilter"></filter> </appender>