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;; S U P P O R T F U N C T I O N S
;;======================================================================
;; cmd is a symbol
;; vars is a json string encoding the parameters for the call
;;
(define (rmt:send-receive cmd rid params)
(let* ((run-id (if rid rid 0))
(connection-info (let ((cinfo (hash-table-ref/default *runremote* run-id #f)))
(if cinfo
cinfo
(let loop ((numtries 100))
(let ((res (client:setup run-id)))
(if res
(hash-table-ref/default *runremote* run-id #f) ;; client:setup filled this in (hopefully)
(if (> numtries 0)
(begin
(thread-sleep! 10)
(loop (- numtries 1)))
(begin
(debug:print 0 "ERROR: 100 tries and no server, giving up")
(exit 1)))))))))
(jparams (db:obj->string params))
(res (http-transport:client-api-send-receive run-id connection-info cmd jparams)))
(if res
(db:string->obj res)
(let ((new-connection-info (client:setup run-id)))
(debug:print 0 "WARNING: Communication failed, trying call to http-transport:client-api-send-receive again.")
(rmt:send-receive cmd run-id params)))))
(define (rmt:send-receive-no-auto-client-setup connection-info cmd run-id params)
(let* ((run-id (if run-id run-id 0))
(jparams (db:obj->string params)) ;; (rmt:dat->json-str params))
(res (http-transport:client-api-send-receive run-id connection-info cmd jparams)))
(if res
(db:string->obj res)
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;; S U P P O R T F U N C T I O N S
;;======================================================================
;; cmd is a symbol
;; vars is a json string encoding the parameters for the call
;;
(define (rmt:send-receive cmd rid params)
(let* ((run-id (if rid rid 0))
(connection-info (let ((cinfo (hash-table-ref/default *runremote* run-id #f)))
(if cinfo
cinfo
;; if read only query and server not already running
;; bypass starting the server.
;;
;; NB// can cache the answer for server running for 10 seconds ...
;;
(if (and (member cmd api:read-only-queries)
(not (open-run-close tasks:get-server tasks:open-db run-id)))
#f
(let loop ((numtries 100))
(let ((res (client:setup run-id)))
(if res
(hash-table-ref/default *runremote* run-id #f) ;; client:setup filled this in (hopefully)
(if (> numtries 0)
(begin
(thread-sleep! 10)
(loop (- numtries 1)))
(begin
(debug:print 0 "ERROR: 100 tries and no server, giving up")
(exit 1))))))))))
(jparams (db:obj->string params)))
(if connection-info
(let ((res (http-transport:client-api-send-receive run-id connection-info cmd jparams)))
(if res
(db:string->obj res)
(let ((new-connection-info (client:setup run-id)))
(debug:print 0 "WARNING: Communication failed, trying call to http-transport:client-api-send-receive again.")
(rmt:send-receive cmd run-id params))))
(rmt:open-qry-close-locally cmd run-id params))))
(define (rmt:open-qry-close-locally cmd run-id params)
(let* ((dbdir (conc (configf:lookup *configdat* "setup" "linktree") "/.db"))
(dbstruct-local (make-dbr:dbstruct path: dbdir
local: #t))
(db-file-path (db:dbfile-path 0))
;; (read-only (not (file-read-access? db-file-path)))
(res (api:execute-requests dbstruct-local (symbol->string cmd) params)))
(db:close-all dbstruct-local)
res))
(define (rmt:send-receive-no-auto-client-setup connection-info cmd run-id params)
(let* ((run-id (if run-id run-id 0))
(jparams (db:obj->string params)) ;; (rmt:dat->json-str params))
(res (http-transport:client-api-send-receive run-id connection-info cmd jparams)))
(if res
(db:string->obj res)
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