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(begin
(debug:print 0 "ERROR: tasks:server-get-server-id needs (hostname and pid) OR (iface and port) OR (hostname and port)")
"SELECT id FROM servers WHERE pid=-999;")))
(if hostname hostname iface)(if pid pid port))
res))
(define (tasks:server-update-heartbeat mdb server-id)
(debug:print-info 0 "Heart beat update of server id=" server-id)
(handle-exceptions
exn
(begin
(debug:print 0 "WARNING: probable timeout on monitor.db access")
(thread-sleep! 1)
(tasks:server-update-heartbeat mdb server-id))
(sqlite3:execute mdb "UPDATE servers SET heartbeat=strftime('%s','now') WHERE id=?;" server-id))
(sqlite3:execute mdb "UPDATE servers SET heartbeat=strftime('%s','now') WHERE id=?;" server-id)))
;; alive servers keep the heartbeat field upto date with seconds every 6 or so seconds
(define (tasks:server-alive? mdb server-id #!key (iface #f)(hostname #f)(port #f)(pid #f))
(let* ((server-id (if server-id
server-id
(tasks:server-get-server-id mdb hostname iface port pid)))
(heartbeat-delta 99e9))
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