Enable MDC TimeBasedTriggeringPolicy

Solution Verified - Updated -

Environment

  • Red Hat Fuse 7.X

Issue

Fail to switch from MDC SizeBasedTriggeringPolicy to MDC TimeBasedTriggeringPolicy for each Camel Context (camel.contextId).

Existing SizeBasedTriggeringPolicy configuration works fine but TimeBasedTriggeringPolicy.

Resolution

Config the org.ops4j.pax.logging.cfg logging part as below:

## Sift appender
log4j2.appender.mdc.type = Routing
log4j2.appender.mdc.name = SiftAppender
log4j2.appender.mdc.routes.type = Routes
## see: http://logging.apache.org/log4j/2.x/manual/appenders.html#Routes
log4j2.appender.mdc.routes.pattern = $\\{ctx:camel.contextId\\}
log4j2.appender.mdc.routes.sift.type = Route
log4j2.appender.mdc.routes.sift.appender.type = RollingRandomAccessFile
log4j2.appender.mdc.routes.sift.appender.name = RollingFile
log4j2.appender.mdc.routes.sift.appender.fileName = ${karaf.data}/log/$\\{ctx:camel.contextId\\}.log
log4j2.appender.mdc.routes.sift.appender.filePattern = ${karaf.data}/log/\$\\{ctx:camel.contextId\\}-%d{yyyy-MM-dd}-%i.log
log4j2.appender.mdc.routes.sift.appender.append = true
log4j2.appender.mdc.routes.sift.appender.layout.type = PatternLayout
log4j2.appender.mdc.routes.sift.appender.layout.pattern = ${log4j2.pattern}
log4j2.appender.mdc.routes.sift.appender.policies.type = Policies
log4j2.appender.mdc.routes.sift.appender.policies.time.type = TimeBasedTriggeringPolicy
log4j2.appender.mdc.routes.sift.appender.policies.time.interval = 1
log4j2.appender.mdc.routes.sift.appender.policies.time.modulate = true
log4j2.appender.mdc.routes.sift.appender.strategy.type = DefaultRolloverStrategy
log4j2.appender.mdc.routes.sift.appender.strategy.max = 7

...

log4j2.rootLogger.appenderRef.Sift.ref = SiftAppender

Sample output of the log files:

-rw-r--r-- 1 jbossfuse jboss   24184 Apr 15 18:16 com.redhat.sample.test-2025-04-15-1.log
-rw-r--r-- 1 jbossfuse jboss     684 Apr 16 09:42 ${ctx:camel.contextId}.log
-rw-r--r-- 1 jbossfuse jboss   10474 Apr 16 09:49 com.redhat.sample.test.log
-rw-r--r-- 1 jbossfuse jboss 1816674 Apr 16 10:00 fuse.log

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