log4j.varia.DenyAllFilter ) drops all logging events. You can add this filter to the end of a filter chain to switch from the default "accept all unless instructed otherwise" filtering behaviour to a "deny that you use "inside" another appender. It allows you to create some kind of "routing" between a chain of appenders. The most used "nested compliant" appender are: • The AsyncAppender ( org.apache.log4j and warn or fail on change. Configuration Specify the packaging as a top level element You can supply a feature descriptor to extend in src/main/feature/feature.xml . Parameter Name Type Description

just have to change appender configuration with: event.topics=decanter/process/* It’s possible to "chain" processors thanks to the topics. For instance, you can have the first processor listening on decanter/collect/* decanter/process/first topic and send processed data to decanter/process/second. Finally, at the end of the chain, you have to configure the appenders to listen on decanter/process/second. Apache Karaf Decanter

CONFIGURATION Specify the packaging as a top level element feature You can supply a feature descriptor to extend in src/main/feature/feature.xml. Parameter Name Type Description