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/*
// pgAgent - PostgreSQL Tools
//
// Copyright (C) 2002 - 2024, The pgAdmin Development Team
// This software is released under the PostgreSQL Licence
//
// pgagent--3.4--4.2.sql - Upgrade the pgAgent schema to 4.2
//
*/
\echo Use "ALTER EXTENSION pgagent UPDATE" to load this file. \quit
CREATE OR REPLACE FUNCTION pgagent.pgagent_schema_version() RETURNS int2 AS '
BEGIN
-- RETURNS PGAGENT MAJOR VERSION
-- WE WILL CHANGE THE MAJOR VERSION, ONLY IF THERE IS A SCHEMA CHANGE
RETURN 4;
END;
' LANGUAGE 'plpgsql' VOLATILE;
CREATE OR REPLACE FUNCTION pgagent.pga_next_schedule(int4, timestamptz, timestamptz, _bool, _bool, _bool, _bool, _bool) RETURNS timestamptz AS '
DECLARE
jscid ALIAS FOR $1;
jscstart ALIAS FOR $2;
jscend ALIAS FOR $3;
jscminutes ALIAS FOR $4;
jschours ALIAS FOR $5;
jscweekdays ALIAS FOR $6;
jscmonthdays ALIAS FOR $7;
jscmonths ALIAS FOR $8;
nextrun timestamp := ''1970-01-01 00:00:00-00'';
runafter timestamp := ''1970-01-01 00:00:00-00'';
bingo bool := FALSE;
gotit bool := FALSE;
foundval bool := FALSE;
daytweak bool := FALSE;
minutetweak bool := FALSE;
i int2 := 0;
d int2 := 0;
nextminute int2 := 0;
nexthour int2 := 0;
nextday int2 := 0;
nextmonth int2 := 0;
nextyear int2 := 0;
BEGIN
-- No valid start date has been specified
IF jscstart IS NULL THEN RETURN NULL; END IF;
-- The schedule is past its end date
IF jscend IS NOT NULL AND jscend < now() THEN RETURN NULL; END IF;
-- Get the time to find the next run after. It will just be the later of
-- now() + 1m and the start date for the time being, however, we might want to
-- do more complex things using this value in the future.
IF date_trunc(''MINUTE'', jscstart) > date_trunc(''MINUTE'', (now() + ''1 Minute''::interval)) THEN
runafter := date_trunc(''MINUTE'', jscstart);
ELSE
runafter := date_trunc(''MINUTE'', (now() + ''1 Minute''::interval));
END IF;
--
-- Enter a loop, generating next run timestamps until we find one
-- that falls on the required weekday, and is not matched by an exception
--
WHILE bingo = FALSE LOOP
--
-- Get the next run year
--
nextyear := date_part(''YEAR'', runafter);
--
-- Get the next run month
--
nextmonth := date_part(''MONTH'', runafter);
gotit := FALSE;
FOR i IN (nextmonth) .. 12 LOOP
IF jscmonths[i] = TRUE THEN
nextmonth := i;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
IF gotit = FALSE THEN
FOR i IN 1 .. (nextmonth - 1) LOOP
IF jscmonths[i] = TRUE THEN
nextmonth := i;
-- Wrap into next year
nextyear := nextyear + 1;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
END IF;
--
-- Get the next run day
--
-- If the year, or month have incremented, get the lowest day,
-- otherwise look for the next day matching or after today.
IF (nextyear > date_part(''YEAR'', runafter) OR nextmonth > date_part(''MONTH'', runafter)) THEN
nextday := 1;
FOR i IN 1 .. 32 LOOP
IF jscmonthdays[i] = TRUE THEN
nextday := i;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
ELSE
nextday := date_part(''DAY'', runafter);
gotit := FALSE;
FOR i IN nextday .. 32 LOOP
IF jscmonthdays[i] = TRUE THEN
nextday := i;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
IF gotit = FALSE THEN
FOR i IN 1 .. (nextday - 1) LOOP
IF jscmonthdays[i] = TRUE THEN
nextday := i;
-- Wrap into next month
IF nextmonth = 12 THEN
nextyear := nextyear + 1;
nextmonth := 1;
ELSE
nextmonth := nextmonth + 1;
END IF;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
END IF;
END IF;
-- Was the last day flag selected?
IF nextday = 32 THEN
IF nextmonth = 1 THEN
nextday := 31;
ELSIF nextmonth = 2 THEN
IF pgagent.pga_is_leap_year(nextyear) = TRUE THEN
nextday := 29;
ELSE
nextday := 28;
END IF;
ELSIF nextmonth = 3 THEN
nextday := 31;
ELSIF nextmonth = 4 THEN
nextday := 30;
ELSIF nextmonth = 5 THEN
nextday := 31;
ELSIF nextmonth = 6 THEN
nextday := 30;
ELSIF nextmonth = 7 THEN
nextday := 31;
ELSIF nextmonth = 8 THEN
nextday := 31;
ELSIF nextmonth = 9 THEN
nextday := 30;
ELSIF nextmonth = 10 THEN
nextday := 31;
ELSIF nextmonth = 11 THEN
nextday := 30;
ELSIF nextmonth = 12 THEN
nextday := 31;
END IF;
END IF;
--
-- Get the next run hour
--
-- If the year, month or day have incremented, get the lowest hour,
-- otherwise look for the next hour matching or after the current one.
IF (nextyear > date_part(''YEAR'', runafter) OR nextmonth > date_part(''MONTH'', runafter) OR nextday > date_part(''DAY'', runafter) OR daytweak = TRUE) THEN
nexthour := 0;
FOR i IN 1 .. 24 LOOP
IF jschours[i] = TRUE THEN
nexthour := i - 1;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
ELSE
nexthour := date_part(''HOUR'', runafter);
gotit := FALSE;
FOR i IN (nexthour + 1) .. 24 LOOP
IF jschours[i] = TRUE THEN
nexthour := i - 1;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
IF gotit = FALSE THEN
FOR i IN 1 .. nexthour LOOP
IF jschours[i] = TRUE THEN
nexthour := i - 1;
-- Wrap into next month
IF (nextmonth = 1 OR nextmonth = 3 OR nextmonth = 5 OR nextmonth = 7 OR nextmonth = 8 OR nextmonth = 10 OR nextmonth = 12) THEN
d = 31;
ELSIF (nextmonth = 4 OR nextmonth = 6 OR nextmonth = 9 OR nextmonth = 11) THEN
d = 30;
ELSE
IF pgagent.pga_is_leap_year(nextyear) = TRUE THEN
d := 29;
ELSE
d := 28;
END IF;
END IF;
IF nextday = d THEN
nextday := 1;
IF nextmonth = 12 THEN
nextyear := nextyear + 1;
nextmonth := 1;
ELSE
nextmonth := nextmonth + 1;
END IF;
ELSE
nextday := nextday + 1;
END IF;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
END IF;
END IF;
--
-- Get the next run minute
--
-- If the year, month day or hour have incremented, get the lowest minute,
-- otherwise look for the next minute matching or after the current one.
IF (nextyear > date_part(''YEAR'', runafter) OR nextmonth > date_part(''MONTH'', runafter) OR nextday > date_part(''DAY'', runafter) OR nexthour > date_part(''HOUR'', runafter) OR daytweak = TRUE) THEN
nextminute := 0;
IF minutetweak = TRUE THEN
d := 1;
ELSE
d := date_part(''MINUTE'', runafter)::int2;
END IF;
FOR i IN d .. 60 LOOP
IF jscminutes[i] = TRUE THEN
nextminute := i - 1;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
ELSE
nextminute := date_part(''MINUTE'', runafter);
gotit := FALSE;
FOR i IN (nextminute + 1) .. 60 LOOP
IF jscminutes[i] = TRUE THEN
nextminute := i - 1;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
IF gotit = FALSE THEN
FOR i IN 1 .. nextminute LOOP
IF jscminutes[i] = TRUE THEN
nextminute := i - 1;
-- Wrap into next hour
IF (nextmonth = 1 OR nextmonth = 3 OR nextmonth = 5 OR nextmonth = 7 OR nextmonth = 8 OR nextmonth = 10 OR nextmonth = 12) THEN
d = 31;
ELSIF (nextmonth = 4 OR nextmonth = 6 OR nextmonth = 9 OR nextmonth = 11) THEN
d = 30;
ELSE
IF pgagent.pga_is_leap_year(nextyear) = TRUE THEN
d := 29;
ELSE
d := 28;
END IF;
END IF;
IF nexthour = 23 THEN
nexthour = 0;
IF nextday = d THEN
nextday := 1;
IF nextmonth = 12 THEN
nextyear := nextyear + 1;
nextmonth := 1;
ELSE
nextmonth := nextmonth + 1;
END IF;
ELSE
nextday := nextday + 1;
END IF;
ELSE
nexthour := nexthour + 1;
END IF;
gotit := TRUE;
foundval := TRUE;
EXIT;
END IF;
END LOOP;
END IF;
END IF;
-- Build the result, and check it is not the same as runafter - this may
-- happen if all array entries are set to false. In this case, add a minute.
nextrun := (nextyear::varchar || ''-''::varchar || nextmonth::varchar || ''-'' || nextday::varchar || '' '' || nexthour::varchar || '':'' || nextminute::varchar)::timestamptz;
IF nextrun = runafter AND foundval = FALSE THEN
nextrun := nextrun + INTERVAL ''1 Minute'';
END IF;
-- If the result is past the end date, exit.
IF nextrun > jscend THEN
RETURN NULL;
END IF;
-- Check to ensure that the nextrun time is actually still valid. Its
-- possible that wrapped values may have carried the nextrun onto an
-- invalid time or date.
IF ((jscminutes = ''{f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f}'' OR jscminutes[date_part(''MINUTE'', nextrun) + 1] = TRUE) AND
(jschours = ''{f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f}'' OR jschours[date_part(''HOUR'', nextrun) + 1] = TRUE) AND
(jscmonthdays = ''{f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f}'' OR jscmonthdays[date_part(''DAY'', nextrun)] = TRUE OR
(jscmonthdays = ''{f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,f,t}'' AND
((date_part(''MONTH'', nextrun) IN (1,3,5,7,8,10,12) AND date_part(''DAY'', nextrun) = 31) OR
(date_part(''MONTH'', nextrun) IN (4,6,9,11) AND date_part(''DAY'', nextrun) = 30) OR
(date_part(''MONTH'', nextrun) = 2 AND ((pgagent.pga_is_leap_year(date_part(''YEAR'', nextrun)::int2) AND date_part(''DAY'', nextrun) = 29) OR date_part(''DAY'', nextrun) = 28))))) AND
(jscmonths = ''{f,f,f,f,f,f,f,f,f,f,f,f}'' OR jscmonths[date_part(''MONTH'', nextrun)] = TRUE)) THEN
-- Now, check to see if the nextrun time found is a) on an acceptable
-- weekday, and b) not matched by an exception. If not, set
-- runafter = nextrun and try again.
-- Check for a wildcard weekday
gotit := FALSE;
FOR i IN 1 .. 7 LOOP
IF jscweekdays[i] = TRUE THEN
gotit := TRUE;
EXIT;
END IF;
END LOOP;
-- OK, is the correct weekday selected, or a wildcard?
IF (jscweekdays[date_part(''DOW'', nextrun) + 1] = TRUE OR gotit = FALSE) THEN
-- Check for exceptions
SELECT INTO d jexid FROM pgagent.pga_exception WHERE jexscid = jscid AND ((jexdate = nextrun::date AND jextime = nextrun::time) OR (jexdate = nextrun::date AND jextime IS NULL) OR (jexdate IS NULL AND jextime = nextrun::time));
IF FOUND THEN
-- Nuts - found an exception. Increment the time and try again
runafter := nextrun + INTERVAL ''1 Minute'';
bingo := FALSE;
minutetweak := TRUE;
daytweak := FALSE;
ELSE
bingo := TRUE;
END IF;
ELSE
-- We''re on the wrong week day - increment a day and try again.
runafter := nextrun + INTERVAL ''1 Day'';
bingo := FALSE;
minutetweak := FALSE;
daytweak := TRUE;
END IF;
ELSE
runafter := nextrun + INTERVAL ''1 Minute'';
bingo := FALSE;
minutetweak := TRUE;
daytweak := FALSE;
END IF;
END LOOP;
RETURN nextrun;
END;
' LANGUAGE 'plpgsql' VOLATILE;
COMMENT ON FUNCTION pgagent.pga_next_schedule(int4, timestamptz, timestamptz, _bool, _bool, _bool, _bool, _bool) IS 'Calculates the next runtime for a given schedule';
|
