Megatest

	   (debug:print-error 0 *default-log-port* " query " stmt " failed, params: " params ", error: " ((condition-property-accessor 'exn 'message) exn) ", exn=" exn)
	   (print-call-chain (current-error-port))
	   default)))
   (apply sqlite3:first-result db stmt params)))

(define (db:setup do-sync)
  (assert *toppath* "FATAL: db:setup called before launch:setup has been run.")
  (let* ((tmpdir (common:get-db-tmp-area)))
  (let* ((tmpdir (common:make-tmpdir-name *toppath* "")))
    (if (not *dbstruct-dbs*)
	(dbfile:setup do-sync *toppath* tmpdir)
	*dbstruct-dbs*)))

;; moved from dbfile
;;
;; ADD run-id SUPPORT

  (debug:print-error 0 *default-log-port* "   params: " params
		     ", error: "     ((condition-property-accessor 'exn 'message)   exn)
		     ", arguments: " ((condition-property-accessor 'exn 'arguments) exn)
		     ", location: "  ((condition-property-accessor 'exn 'location)  exn)
		     ))


;; NB// #f => return dbdir only
;;      (was planned to be;  zeroth db with name=main.db)
;; 
;; If run-id is #f return to create and retrieve the path where the db will live.
;;
(define db:dbfile-path common:get-db-tmp-area)

(define (db:set-sync db)
  (let ((syncprag (configf:lookup *configdat* "setup" "sychronous")))
    (sqlite3:execute db (conc "PRAGMA synchronous = " (or syncprag 0) ";")))) 


(define (db:get-last-update-time db)
  (let ((last-update-time #f))

    (max (get-mtime fname)
	 (get-mtime wal-file)
	 (get-mtime shm-file))))
	 
;; (define (db:all-db-sync dbstruct)
;;   (let* ((dbdat (db:open-db dbstruct #f db:initialize-main-db))
;; 	 (data-synced       0) ;; count of changed records
;;     (tmp-area       (common:get-db-tmp-area))
;;     (tmp-area       (common:make-tmpdir-name *toppath*))
;;     (dbfiles        (glob (conc tmp-area"/.mtdb/*.db")))
;;     (sync-durations (make-hash-table))
;;     (no-sync-db        (db:open-no-sync-db)))
;;     (for-each
;;      (lambda (file) ;; tmp db file
;;        (debug:print-info 3 *default-log-port* "file: " file)
;;        (let* ((fname       (conc (pathname-file file) ".db")) ;; fname is tmp db file

;;  'closeall     - close all opened dbs
;;  'schema       - attempt to apply schema changes
;;  run-ids: '(1 2 3 ...) or #f (for all)
;;
(define (db:multi-db-sync dbstruct . options)
  (let* (;; (dbdat       (db:open-db dbstruct #f dbfile:db-init-proc))
	 (data-synced 0) ;; count of changed records
	 (tmp-area       (common:get-db-tmp-area))
	 (tmp-area       (common:make-tmpdir-name *toppath* ""))
	 (old2new (member 'old2new options))
	 (dejunk (member 'dejunk options))
	 (killservers (member 'killservers options))
	 (src-area (if old2new *toppath* tmp-area))
	 (dest-area (if old2new tmp-area *toppath*))
	 (dbfiles        (if old2new (glob (conc *toppath* "/.mtdb/*.db"))
			     (glob (conc tmp-area "/.mtdb/*.db"))))

;;======================================================================
;; no-sync.db - small bits of data to be shared between servers
;;======================================================================

(define (db:get-dbsync-path)
  (case (rmt:transport-mode)
    ((http)(common:get-db-tmp-area))
    ((http)(common:make-tmpdir-name *toppath* ""))
    ((tcp) (conc *toppath*"/.mtdb"))
    ((nfs) (conc *toppath*"/.mtdb"))
    (else "/tmp/dunno-this-gonna-exist")))

;; This is needed for api.scm
(define (db:open-no-sync-db)
   (dbfile:open-no-sync-db (db:get-dbsync-path)))

    res))

;; TODO: Switch this to use max(update_time) from each run db? Then if using a server there is no disk traffic (using cachedb db) ???
;;
;; NOTE: This DOESN'T (necessarily) get the real run ids, but the number of the <number>.db!!

(define (db:get-changed-run-ids since-time)
  (let* ((dbdir      (db:dbfile-path)) ;; (configf:lookup *configdat* "setup" "dbdir"))
  (let* ((dbdir      (common:make-tmpdir-name *toppath* "")) ;; (configf:lookup *configdat* "setup" "dbdir"))
	 (alldbs     (glob (conc *toppath* "/.mtdb/[0-9]*.db*")))
	 (changed    (filter (lambda (dbfile)
			       (> (file-modification-time dbfile) since-time))
			     alldbs)))
    (delete-duplicates
     (map (lambda (dbfile)
	    (let* ((res (string-match ".*\\/(\\d+)\\.db*" dbfile)))

          (debug:print 0 *default-log-port* "could not get lock for " from-db " from no-sync-db")
	  #f
        ))))

;; sync for filesystem local db writes
;;
(define (db:run-lock-and-sync no-sync-db)
  (let* ((tmp-area       (common:get-db-tmp-area))
  (let* ((tmp-area       (common:make-tmpdir-name *toppath* ""))
	 (dbfiles        (glob (conc tmp-area"/.mtdb/*.db")))
	 (sync-durations (make-hash-table)))
    ;; (debug:print-info 0 *default-log-port* "lock-and-sync, dbfiles: "dbfiles)
    (for-each
     (lambda (file)
       (let* ((fname (conc (pathname-file file) ".db"))
	      (fulln (conc *toppath*"/.mtdb/"fname))

  (thread-sleep! 0.05) ;; delay for startup
  (let ((legacy-sync        (common:run-sync?))
	(sync-stale-seconds (configf:lookup-number *configdat* "server" "sync-stale-seconds" default: 300))
 	(debug-mode         (debug:debug-mode 1))
 	(last-time          (current-seconds))     ;; last time through the sync loop
 	(no-sync-db         (db:open-no-sync-db))
 	(sync-duration      0)  ;; run time of the sync in milliseconds
	(tmp-area           (common:get-db-tmp-area)))
	(tmp-area           (common:make-tmpdir-name *toppath* "")))
    ;; Sync moved to http-transport keep-running loop
    (debug:print-info 2 *default-log-port* "Periodic copy-based sync thread started. syncer is copy-sync, tmp-area is " tmp-area)
    (debug:print-info 3 *default-log-port* "watchdog starting. syncer is copy-sync pid="(current-process-id));;  " this-wd-num="this-wd-num)
    
    (if (and legacy-sync (not *time-to-exit*))
 	(begin
 	  (debug:print-info 0 *default-log-port* "Server running, periodic copy-based sync started.")

 		      ;;
 		     
 		       (for-each
 			(lambda (subdb)
 			  (let* (;;(dbstruct (db:setup))
 				 (mtdb       (dbr:subdb-mtdb subdb))
 				 (mtpath     (db:dbdat-get-path mtdb))
 				 (tmp-area   (common:get-db-tmp-area))
 				 (tmp-area   (common:make-tmpdir-name *toppath* ""))
 				 (res        (db:sync-to-megatest.db dbstruct no-sync-db: no-sync-db))) ;; did we sync any data? If so need to set the db touched flag to keep the server alive
 			    (set! sync-duration (- (current-milliseconds) sync-start))
 			    (if (> res 0) ;; some records were transferred, keep the db alive
 				(begin
 				  (mutex-lock! *heartbeat-mutex*)
 				  (set! *db-last-access* (current-seconds))
 				  (mutex-unlock! *heartbeat-mutex*)