[logback-user] Groovy configuration of SizeAndTimeBasedFNATP

[Jeff Skjonsby]

I have been trying to convert our logging configuration to the groovy based configuration and have run into an issue with setting the SizeAndTimeBasedFNATP up.  I used the converter tool to convert our configuration and have also tried the examples in the documentation: 

import ch.qos.logback.classic.encoder.PatternLayoutEncoder
import ch.qos.logback.core.rolling.RollingFileAppender
import ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP
import ch.qos.logback.core.rolling.TimeBasedRollingPolicy

import static ch.qos.logback.classic.Level.DEBUG

appender("ROLLING", RollingFileAppender) {
   file = "mylog.txt"
   rollingPolicy(TimeBasedRollingPolicy) {
     fileNamePattern = "mylog-%d{yyyy-MM-dd}.%i.txt"
     timeBasedFileNamingAndTriggeringPolicy(SizeAndTimeBasedFNATP) {
       maxFileSize = "100MB"
     }
   }
   encoder(PatternLayoutEncoder) {
     pattern = "%msg%n"
   }
}
root(DEBUG, ["ROLLING"])


Everything I've tried has resulted in this exception: 
java.lang.NullPointerException	at ch.qos.logback.core.rolling.TimeBasedFileNamingAndTriggeringPolicyBase.start(TimeBasedFileNamingAndTriggeringPolicyBase.java:46)  at 
ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP.start(SizeAndTimeBasedFNATP.java:36)
...

If I step through the configuration process it appears that on line 46 in TimeBasedFileNamingAndTriggeringPolicyBase the tbrp member variable is null here.  

Any ideas?