Definition of 1 logback file per level

Question

I would like to define a log configuration file that can:

• log DEBUG (and above) things in debug.log
• log INFO (and above) things in info.log

That is, when I call:

logger.warn("blah"); // Logs to both info.log and debug.log logger.debug("bleh"); // Logs to debug.log only 

Is it possible?

I tried something like this, but it looks like when logback encounters several tags, it only accepts the last:

 <appender name="infoFile" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>${LOGS_FOLDER}/info.log</File> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <appender name="debugFile" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>${LOGS_FOLDER}/debug.log</File> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <root level="INFO"> <appender-ref ref="infoFile" /> </root> <root level="DEBUG"> <appender-ref ref="debugFile" /> </root> 

Here info.log contains debug level logs: (

Please note that I want to apply this behavior for each of my packages.

Answer 1

Using levelFilter solved the problem

Example:

 <appender name="infoFile" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>${LOGS_FOLDER}/info.log</File> <filter class="ch.qos.logback.classic.filter.LevelFilter"> <level>INFO</level> <onMatch>ACCEPT</onMatch> <onMismatch>DENY</onMismatch> </filter> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <appender name="debugFile" class="ch.qos.logback.core.rolling.RollingFileAppender"> <File>${LOGS_FOLDER}/debug.log</File> <encoder> <pattern>%d{HH:mm:ss.SSS} [%thread] %-5level %logger{36} - %msg%n</pattern> </encoder> </appender> <root level="DEBUG"><!-- Using the lowest level here --> <appender-ref ref="debugFile" /> <appender-ref ref="infoFile" /> </root>