Megatest

;;======================================================================

(use format typed-records) ;; RADT => purpose of json format??

(declare (unit rmt))
(declare (uses api))
(declare (uses http-transport))

(declare (uses commonmod))
(import commonmod)

(declare (uses apimod))
(import apimod)

(declare (uses rmtmod))
(import rmtmod)

;; should not be here
(declare (uses dbmod))
(import dbmod)

(declare (uses configfmod))
(import configfmod)

(declare (uses servermod))
(import servermod)

(include "common_records.scm")
;; (declare (uses rmtmod))

;; (import rmtmod)

;;
;; THESE ARE ALL CALLED ON THE CLIENT SIDE!!!

	      cinfo
	      (if (server:check-if-running areapath)
		  (client:setup areapath)
		  #f))))

;;======================================================================

(define (create-remote-record)
  (let ((rr (make-remote)))
    (rmt:init-remote rr)
    rr))

(define (rmt:init-remote rr)
  (remote-hh-dat-set!         rr (common:get-homehost)) ;
  (remote-server-info-set!    rr (if *toppath* (server:check-if-running *toppath*) #f))
  (remote-transport-set!      rr *transport-type*)
  (remote-server-timeout-set! rr (server:expiration-timeout))
  rr)
  
;; RA => e.g. usage (rmt:send-receive 'get-var #f (list varname))
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)(area-dat #f)) ;; start attemptnum at 1 so the modulo below works as expected

  #;(common:telemetry-log (conc "rmt:"(->string cmd))
                        payload: `((rid . ,rid)
                                   (params . ,params)))

  ;;DOT   ranksep=0;
  ;;DOT   // rankdir=LR;
  ;;DOT   node [shape="box"];
  ;;DOT "rmt:send-receive" -> MUTEXLOCK;
  ;;DOT { edge [style=invis];"case 1" -> "case 2" -> "case 3" -> "case 4" -> "case 5" -> "case 6" -> "case 7" -> "case 8" -> "case 9" -> "case 10" -> "case 11"; }
  ;; do all the prep locked under the rmt-mutex
  (mutex-lock! *rmt-mutex*)

  ;; set up runremote record earlier than the loop below
  (if (not area-dat)                   ;; can remove this one. should never get here.         
      (begin
	(set! *runremote* (create-remote-record))
	(let* ((server-info (remote-server-info *runremote*))) 
	  (if server-info
	      (begin
		(remote-server-url-set! *runremote* (server:record->url server-info))
		(remote-server-id-set! *runremote* (server:record->id server-info)))))  
	(set! area-dat *runremote*))) ;; new runremote will come from this on next iteration
    
  ;; 1. check if server is started IFF cmd is a write OR if we are not on the homehost, store in runremote
  ;; 2. check the age of the connections. refresh the connection if it is older than timeout-20 seconds.
  ;; 3. do the query, if on homehost use local access
  ;;
  (let* ((start-time    (current-seconds)) ;; snapshot time so all use cases get same value
         (areapath      *toppath*);; TODO - resolve from dbstruct to be compatible with multiple areas
	 (runremote     (or area-dat
			    *runremote*))
         (attemptnum    (+ 1 attemptnum))
	 (readonly-mode (rmtmod:calc-ro-mode runremote *toppath*)))

    ;; DOT INIT_RUNREMOTE; // leaving off - doesn't really add to the clarity
    ;; DOT MUTEXLOCK -> INIT_RUNREMOTE [label="no remote?"];
    ;; DOT INIT_RUNREMOTE -> MUTEXLOCK;
    ;; ensure we have a record for our connection for given area










    ;; DOT SET_HOMEHOST; // leaving off - doesn't really add to the clarity
    ;; DOT MUTEXLOCK -> SET_HOMEHOST [label="no homehost?"];
    ;; DOT SET_HOMEHOST -> MUTEXLOCK;
    ;; ensure we have a homehost record
    (if (not (pair? (remote-hh-dat runremote)))  ;; not on homehost
	(thread-sleep! 0.1) ;; since we shouldn't get here, delay a little
	(remote-hh-dat-set! runremote (common:get-homehost)))

     ;;DOT MUTEXLOCK -> CASE6 [label="on homehost,\nwrite query,\nhave server,\ncan't reach it"]; {rank=same "case 6" CASE6};
     ;;DOT CASE6 -> "rmt:send-receive";
     ;; on homehost and this is a write, we already have a server, but server has died
     ((and (cdr (remote-hh-dat runremote))           ;; on homehost
           (not (member cmd api:read-only-queries))  ;; this is a write
           (remote-server-url runremote)             ;; have a server
           (not (server:ping (remote-server-url runremote) (remote-server-id runremote))))  ;; server has died. NOTE: this is not a cheap call! Need better approach.
      (set! *runremote* (create-remote-record)) 
      (let* ((server-info (remote-server-info *runremote*))) 
            (if server-info
		(begin
		  (remote-server-url-set! *runremote* (server:record->url server-info))
                  (remote-server-id-set! *runremote* (server:record->id server-info)))))
      (remote-force-server-set! runremote (common:force-server?))
      (mutex-unlock! *rmt-mutex*)

				 (cons 'none 0))
			     (loop (car tal)(cdr tal) newmax-cmd currmax)))))))
    (mutex-unlock! *db-stats-mutex*)
    res))

(define (rmt:open-qry-close-locally cmd run-id params #!key (remretries 5))
  (let* ((qry-is-write   (not (member cmd api:read-only-queries)))
	 (db-file-path   (common:get-db-tmp-area)) ;; db:dbfile-path)) ;;  0))
	 (dbstruct-local (db:setup #t))  ;; make-dbr:dbstruct path:  dbdir local: #t)))
	 (read-only      (not (file-write-access? db-file-path)))
	 (start          (current-milliseconds))
	 (resdat         (if (not (and read-only qry-is-write))
			     (let ((v (api:execute-requests dbstruct-local (vector (symbol->string cmd) params))))
			       (handle-exceptions ;; there has been a long history of receiving strange errors from values returned by the client when things go wrong..
				exn               ;;  This is an attempt to detect that situation and recover gracefully

  (rmt:send-receive 'start-server 0 (list run-id)))

;;======================================================================
;;  M I S C
;;======================================================================

(define (rmt:login run-id)
  (assert *my-client-signature* "ERROR: login attempted without first calling (client:get-signature).")
  (rmt:send-receive 'login run-id (list *toppath* megatest-version *my-client-signature*)))

;; This login does no retries under the hood - it acts a bit like a ping.
;; Deprecated for nmsg-transport.
;;
(define (rmt:login-no-auto-client-setup connection-info)
  (case *transport-type* ;; run-id of 0 is just a placeholder

  (rmt:send-receive 'update-run-event_time #f (list run-id)))

(define (rmt:get-runs-by-patt  keys runnamepatt targpatt offset limit fields last-runs-update  #!key  (sort-order "asc")) ;; fields of #f uses default
  (rmt:send-receive 'get-runs-by-patt #f (list keys runnamepatt targpatt offset limit fields last-runs-update sort-order)))

(define (rmt:find-and-mark-incomplete run-id ovr-deadtime)
  ;; (if (rmt:send-receive 'have-incompletes? run-id (list run-id ovr-deadtime))
  (rmt:send-receive 'mark-incomplete run-id (list run-id ovr-deadtime))
  ) ;; )

(define (rmt:get-main-run-stats run-id)
  (rmt:send-receive 'get-main-run-stats #f (list run-id)))

(define (rmt:get-var varname)
  (rmt:send-receive 'get-var #f (list varname)))

(define (rmt:test-set-archive-block-id run-id test-id archive-block-id)
  (rmt:send-receive 'test-set-archive-block-id run-id (list run-id test-id archive-block-id)))

(define (rmt:test-get-archive-block-info archive-block-id)
  (rmt:send-receive 'test-get-archive-block-info #f (list archive-block-id)))















(define (extras-readonly-mode rmt-mutex log-port cmd params)
  (mutex-unlock! rmt-mutex)
  (debug:print-info 12 log-port "rmt:send-receive, case 3")
  (debug:print 0 log-port "WARNING: write transaction requested on a readonly area.  cmd="cmd" params="params)
  #f)

(define (extras-transport-failed *default-log-port* *rmt-mutex* attemptnum runremote cmd rid params)