@Override
    public String getEmailMessage(String pinpointUrl, String applicationName, String serviceType, String currentTime) {
        return String.format("%s value is %s%s during the past 5 mins.(Threshold : %s%s)<br>",
                rule.getCheckerName(), getDetectedValue(), unit, rule.getThreshold(), unit);
    }
@author koo.taejin
@author minwoo.jung
@author Jongjin.Bae
batch/src/main/java/com/navercorp/pinpoint/batch/alarm/checker/AlarmChecker.java