Package-specific logging levels for different Logback appenders - configuration

Question

I have this simple Logback config file, containing two appenders and some custom logging levels based on package name.
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE xml>
<configuration>
<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
<encoder>
<charset>UTF-8</charset>
<pattern>%date{HH:mm}\t%-5level\t%msg%n</pattern>
</encoder>
</appender>
<appender name="FILE" class="ch.qos.logback.core.FileAppender">
<file>my_logger.log</file>
<encoder>
<charset>UTF-8</charset>
<pattern>%date{dd MMM HH:mm}|%class{0}|%-5level|%msg%n</pattern>
</encoder>
</appender>
<!-- custom logging levels -->
<logger name="myapp.package1" level="INFO" />
<logger name="myapp.package2" level="INFO" />
<root>
<appender-ref ref="CONSOLE" />
<appender-ref ref="FILE" />
</root>
</configuration>
With this configuration, the custom logging levels are applied for both appenders.
How can I change it so that only ConsoleAppender uses these custom logging levels, while FileAppender sticks to default levels?

Answer 1

If you don't want to implement a custom filter, you can create a new appender with a fixed threshold (in you case INFO):
<appender name="INFO_CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
...
<filter class="ch.qos.logback.classic.filter.ThresholdFilter">
<level>INFO</level>
</filter>
</appender>
Then, for your custom logging levels add the INFO_CONSOLE and your FILE appender. The additivity="false" attribute prevents the logger from logging to the CONSOLE appender inherited from root.
<logger name="myapp.package1" additivity="false">
<appender-ref ref="INFO_CONSOLE" />
<appender-ref ref="FILE" />
</logger>
This should log DEBUG and above to the FILE and CONSOLE appenders, except for myapp.package1 which will only log INFO and above to CONSOLE.