Policy Optimization: Additional Material

log4j configuration

log4j.rootLogger=DEBUG, OPT

log4j.appender.OPT=org.apache.log4j.RollingFileAppender
log4j.appender.OPT.File=opt.log

log4j.appender.OPT.layout=org.apache.log4j.PatternLayout

# Canonical Log Format Pattern
log4j.appender.A1.layout.ConversionPattern=%d %m%n

logging helper methods.java

public void logRequest(Request r, String message) {
  logger.info(String.format("%s %s %s", r.getId(), message, r.getStats()));
}

public void logError(Request r, String message) {
  logger.error(String.format("%s Error %s", r.getId(), message));
}