Hi,

we are using the sift logger (with MDC) to separate log entries generated by 
user actions from log entries generated by "background" tasks.  That works 
nicely.


However, now we want to have different log levels for these two appenders (e.g. 
DEBUG for "foreground.log" and WARN for "background.log").  Problem is that 
there is obviously only one appender.  Can that be accomplished within the 
logback.xml?


For reference, here is our current logback.xml


<configuration scan="true" scanPeriod="30 seconds">
    <appender name="SIFT" class="ch.qos.logback.classic.sift.SiftingAppender">
        <discriminator 
class="ch.qos.logback.classic.sift.MDCBasedDiscriminator">
            <key>stream</key>
            <defaultValue>foreground</defaultValue>
        </discriminator>
        <sift>
            <appender name="FILE-${stream}" 
class="ch.qos.logback.core.rolling.RollingFileAppender">
                <file>${destination}/${stream}_current.log</file>
                <rollingPolicy 
class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
                    
<fileNamePattern>${destination}/${stream}_%d{yyyy-MM-dd}.%i.log</fileNamePattern>
                    <timeBasedFileNamingAndTriggeringPolicy 
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
                        <maxFileSize>10MB</maxFileSize>
                    </timeBasedFileNamingAndTriggeringPolicy>
                </rollingPolicy>
                <encoder>
                    <pattern>%date %-5level [%X{token}%thread] %logger{36} 
[%file:%line] %msg%n</pattern>
                </encoder>
            </appender>
        </sift>
    </appender>
    <root level="all">
        <appender-ref ref="SIFT" />
    </root>
</configuration>



</nk>

---


Norbert Kiesel
Systems Architect | Engineering
MetricStream
2600 E. Bayshore Road | Palo Alto, CA - 94303
+1-650-620-2954 | [email protected] | www.metricstream.com

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