PSL uses SLF4J for logging.
In the PSL Java interface, SLF4J is bound to Log4j 1.2.
The Log4j configuration file is located at
It should look something like this:
# Set root logger level to the designated level and its only appender to A1. log4j.rootLogger=INFO, A1 # A1 is set to be a ConsoleAppender. log4j.appender.A1=org.apache.log4j.ConsoleAppender # A1 uses PatternLayout. log4j.appender.A1.layout=org.apache.log4j.PatternLayout log4j.appender.A1.layout.ConversionPattern=%-4r [%t] %-5p %c %x - %m%n # Change our connection pool to only log errors. # Since we may set our root logger to something more loose, we want to explicitly set this. org.slf4j.simpleLogger.log.com.zaxxer.hikari=ERROR log4j.logger.com.zaxxer.hikari=ERROR
The logging verbosity can be set by changing
ERROR in the second line to a different level and recompiling. Options include
In the command line interface, the logging level can be set using the same logging levels like this:
java -jar psl.jar --infer --data example.data --model example.psl -D log4j.threshold=DEBUG