public synchronized EventResponse handle(Event event) {
if (event.isOn()) {
addEvent(event);
alarm.start();
} else {
removeEvent(event);
if (eventsWhichSetOffTheAlarm.size() == 0) {
alarm.stop();
}
}
return new EventResponse(alarm.isOn(), eventsWhichSetOffTheAlarm.values());
}
private void addEvent(Event event) {
eventsWhichSetOffTheAlarm.put(event.getId(), event);
}
private void removeEvent(Event event) {
eventsWhichSetOffTheAlarm.remove(event.getId());
}