public List<String> getSmsMessage() {
        List<String> messages = new ArrayList<>();
        messages.add(String.format("[PINPOINT Alarm - %s] %s is %s%s (Threshold : %s%s)",
                rule.getApplicationName(), rule.getCheckerName(), getDetectedValue(), unit, rule.getThreshold(), unit));
        return messages;
    }
@author koo.taejin
@author minwoo.jung
@author Jongjin.Bae
batch/src/main/java/com/navercorp/pinpoint/batch/alarm/checker/AlarmChecker.java