Public.getmanagepercentavailintfwindow (function)

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Function

public.getmanagepercentavailintfwindow

Source

CREATE OR REPLACE FUNCTION public.getmanagepercentavailintfwindow(integer, character varying, timestamp without time zone, timestamp without time zone)
 RETURNS double precision
 LANGUAGE plpgsql
AS $function$
   DECLARE
	nid ALIAS FOR $1;
	ipid ALIAS FOR $2;
	xtime ALIAS FOR $3;
	ytime ALIAS FOR $4;
	downtime float8 := 0.0;
	count integer := 0;
	rollingWindow float := 0;
	totalServiceTime float := 0;
   BEGIN
	IF xtime < ytime THEN
		rollingWindow := EXTRACT (EPOCH FROM (ytime - xtime));
		downtime := getManagedOutageForIntfInWindow(nid, ipid, ytime, xtime)/1000;
	ELSE
		rollingWindow := EXTRACT (EPOCH FROM (xtime - ytime));
		downtime := getManagedOutageForIntfInWindow(nid, ipid, xtime, ytime)/1000;
	END IF;
	count := getManagedServiceCountForIntf(nid, ipid);
	totalServiceTime := count * rollingWindow;

	IF totalServiceTime > 0 THEN
		RETURN	100 * (1 - (downtime / totalServiceTime));
	ELSE
                IF totalServiceTime = 0 THEN
                        RETURN 100;
                ELSE
                        RETURN -1;
                END IF;
	END IF;    
   END;
$function$