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(sqlite3:for-each-row
(lambda (num-in-queue)
(set! res num-in-queue))
mdb
"SELECT count(id) FROM servers WHERE run_id=? AND state = 'available';"
run-id)
res))
(define (tasks:num-servers-non-zero-running mdb)
(let ((res 0))
(sqlite3:for-each-row
(lambda (num-running)
(set! res num-running))
mdb
"SELECT count(id) FROM servers WHERE run_id != 0 AND state = 'running';"
run-id)
res))
(define (tasks:server-clean-out-old-records-for-run-id mdb run-id tag)
(sqlite3:execute mdb "UPDATE servers SET state=?,heartbeat=strftime('%s','now') WHERE state in ('available','shutting-down') AND (strftime('%s','now') - start_time) > 50 AND run_id=?;"
(conc "defunct" tag) run-id))
(define (tasks:server-force-clean-running-records-for-run-id mdb run-id tag)
(sqlite3:execute mdb "UPDATE servers SET state=?,heartbeat=strftime('%s','now') WHERE state = 'running' AND run_id=?;"
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