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;; TASKS
tasks-add
tasks-set-state-given-param-key
))
(define *db-write-mutexes* (make-hash-table))
;; These are called by the server on recipt of /api calls
;; - keep it simple, only return the actual result of the call, i.e. no meta info here
;;
;; - returns #( flag result )
;;
(define (api:execute-requests dbstruct dat)
(db:open-no-sync-db) ;; sets *no-sync-db*
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;; TASKS
tasks-add
tasks-set-state-given-param-key
))
(define *db-write-mutexes* (make-hash-table))
(define *server-signature* #f)
;; These are called by the server on recipt of /api calls
;; - keep it simple, only return the actual result of the call, i.e. no meta info here
;;
;; - returns #( flag result )
;;
(define (api:execute-requests dbstruct dat)
(db:open-no-sync-db) ;; sets *no-sync-db*
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#;(common:telemetry-log (conc "api-out:"(->string cmd))
payload: `((params . ,params)
(ok-res . #f)))
(vector #t res))))))))
;; indat is (cmd run-id params meta)
;;
;; WARNING: Do not print anything in this function as it reads/writes to current in/out port
;;
(define (api:tcp-dispatch-request-make-handler dbstruct) ;; cmd run-id params)
(lambda ()
(let* ((indat (deserialize)))
(set! *api-process-request-count* (+ *api-process-request-count* 1))
(match indat
((cmd run-id params meta)
(let* ((status (cond
;; turn off busy throttling while trying to get things stable
;; ((> *api-process-request-count* 50) 'busy)
;; ((> *api-process-request-count* 25) 'loaded)
((busy) (conc "Server overloaded, "*api-process-request-count*" threads in flight"))
((loaded) (conc "Server loaded, "*api-process-request-count*" threads in flight"))
(else #f)))
(result (case status
((busy loaded) #f)
(else
(case cmd
((ping) (tt:mk-signature *toppath*))
(else
(api:dispatch-request dbstruct cmd run-id params))))))
(payload (list status errmsg result '())))
(set! *api-process-request-count* (- *api-process-request-count* 1))
(serialize payload)))
(else
(assert #f "FATAL: failed to deserialize indat "indat))))))
(define (api:dispatch-request dbstruct cmd run-id params)
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#;(common:telemetry-log (conc "api-out:"(->string cmd))
payload: `((params . ,params)
(ok-res . #f)))
(vector #t res))))))))
;; indat is (cmd run-id params meta)
;;
;; WARNING: Do not print anything in the lambda of this function as it
;; reads/writes to current in/out port
;;
(define (api:tcp-dispatch-request-make-handler dbstruct) ;; cmd run-id params)
(assert *toppath* "FATAL: api:tcp-dispatch-request-make-handler called but *toppath* not set.")
(if (not *server-signature*)
(set! *server-signature* (tt:mk-signature *toppath*)))
(lambda ()
(let* ((indat (deserialize))
(newcount (+ *api-process-request-count* 1))
(delay-wait (if (> newcount 10)
(- newcount 10)
0)))
(set! *api-process-request-count* newcount)
(set! *db-last-access* (current-seconds))
(match indat
((cmd run-id params meta)
(let* ((status (cond
;; ((> newcount 30) 'busy)
;; ((> newcount 15) 'loaded)
(else 'ok)))
(errmsg (case status
((busy) (conc "Server overloaded, "newcount" threads in flight"))
((loaded) (conc "Server loaded, "newcount" threads in flight"))
(else #f)))
(result (case status
((busy) (- newcount 29))
((loaded) #f)
(else
(case cmd
((ping) *server-signature*)
(else
(api:dispatch-request dbstruct cmd run-id params))))))
(meta `((wait . ,delay-wait)))
(payload (list status errmsg result meta)))
(set! *api-process-request-count* (- *api-process-request-count* 1))
(serialize payload)))
(else
(assert #f "FATAL: failed to deserialize indat "indat))))))
(define (api:dispatch-request dbstruct cmd run-id params)
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