Show openHAB uptime

Tutorials & Examples
4

I am just using this rule and it works quite well for me:


rule "Openhab Uptime"
when
	System started
then
	postUpdate(OH_Uptime, new DateTimeType(now.toString))
end


rule "Openhab Uptime readable"
when
    Item OH_Uptime changed or
	Time cron "1 1 * * * ?"
then

	var String tmp

	if(OH_Uptime != NULL) {
		var DateTime dateTime_OH_Uptime = new DateTime((OH_Uptime.state as DateTimeType).calendar.timeInMillis)
		var diff = now.millis - dateTime_OH_Uptime.millis

		//http://stackoverflow.com/questions/13018550/time-since-ago-library-for-android-java
		val Number SECOND_MILLIS = 1000;
		val Number MINUTE_MILLIS = 60 * SECOND_MILLIS;
		val Number HOUR_MILLIS   = 60 * MINUTE_MILLIS;
		val Number DAY_MILLIS    = 24 * HOUR_MILLIS;

		if (diff < MINUTE_MILLIS) {
			tmp = "just now";
		} else if (diff < 2 * MINUTE_MILLIS) {
			tmp = "a minute";
		} else if (diff < 50 * MINUTE_MILLIS) {
			tmp = String::format("%.2f", diff / MINUTE_MILLIS) + " Minutes";
		} else if (diff < 90 * MINUTE_MILLIS) {
			tmp = "an hour ago";
		} else if (diff < 24 * HOUR_MILLIS) {
			tmp = String::format("%.2f", diff / HOUR_MILLIS) + " Hours";
		} else if (diff < 48 * HOUR_MILLIS) {
			tmp = "since yesterday";
		} else {
			tmp = String::format("%.1f", diff / DAY_MILLIS) + " Days";
		}

		postUpdate(OH_Uptime_HumanReadable, tmp)
	}

end