period = Integer.parseInt(periodStr);
} catch (NumberFormatException nfe) {
log.debug(ExceptionUtil.getStackTrace(nfe));
}
if (period <= 0) {
throw new MetricsException("Invalid period: " + periodStr);
}
setPeriod(period);
this.period = period;
log.info("Log4JMetricsContext." + contextName + ".period=" + period);
}