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action TEXT DEFAULT '',
owner TEXT,
state TEXT DEFAULT 'new',
target TEXT DEFAULT '',
name TEXT DEFAULT '',
test TEXT DEFAULT '',
item TEXT DEFAULT '',
keylock TEXT,
creation_time TIMESTAMP,
execution_time TIMESTAMP);")
(sqlite3:execute tdb "CREATE TABLE IF NOT EXISTS monitors (id INTEGER PRIMARY KEY,
pid INTEGER,
start_time TIMESTAMP,
last_update TIMESTAMP,
hostname TEXT,
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(testpatts (hash-table-ref/default var-params "testpatts" "%"))
(itempatts (hash-table-ref/default var-params "itempatts" "%")))
(tasks:add tdb action owner target runname testpatts itempatts)))
;; return one task from those who are 'new' OR 'waiting' AND more than 10sec old
;;
(define (tasks:snag-a-task tdb)
(let ((res #f))
(with-transaction
tdb
(lambda ()
(let ((res #f)
(keytxt (conc (current-process-id) "-" (get-host-name) "-" (car (user-information (current-user-id))))))
;; first randomly set a new to pid-hostname-hostname
(sqlite3:execute
tdb
"UPDATE tasks_queue SET keylock=? WHERE id IN
(SELECT id FROM tasks_queue
WHERE state='new' OR
(state='waiting' AND (strftime('%s','now')-execution_time) > 10) OR
state='reset'
ORDER BY RANDOM() LIMIT 1);" keytxt)
;; execution time is updated with every snag, wait 10 secs before doing anything with the queue
(sqlite3:for-each-row
(lambda (id . rem)
(set! res (apply vector id rem)))
tdb
"SELECT id,action,owner,state,target,name,test,item,creation_time,execution_time
FROM tasks_queue
WHERE
state='new' OR
(state='waiting' AND (strftime('%s','now')-execution_time) > 10) OR
state='reset'
ORDER BY execution_time ASC LIMIT 1;")
(if res ;; yep, have work to be done
(begin
(sqlite3:execute tdb "UPDATE tasks_queue SET state='inprogress',execution_time=strftime('%s','now') WHERE id=?;"
(tasks:task-get-id res))
res)
#f)))))
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FROM tasks_queue "
;; WHERE
;; state IN " statesstr " AND
;; action IN " actionsstr
" ORDER BY creation_time DESC;"))
res))
;; remove tasks given by a string of numbers comma separated
(define (tasks:remove-queue-entries tdb task-ids)
(sqlite3:execute tdb (conc "DELETE FROM tasks_queue WHERE id IN (" task-ids ");")))
;;
(define (tasks:start-monitor db tdb)
(if (> (tasks:get-num-alive-monitors tdb) 2) ;; have two running, no need for more
(debug:print 1 "INFO: Not starting monitor, already have more than two running")
(let* ((megatestdb (conc *toppath* "/megatest.db"))
(monitordbf (conc *toppath* "/monitor.db"))
(last-db-update 0)) ;; (file-modification-time megatestdb)))
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