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;;  PURPOSE.
;;======================================================================

;;======================================================================
;; Database access
;;======================================================================

(require-extension (srfi 18) extras tcp rpc)
(import (prefix rpc rpc:))
(require-extension (srfi 18) extras tcp) ;;  rpc)
;; (import (prefix rpc rpc:))

(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml)
(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64)
(import (prefix sqlite3 sqlite3:))
(import (prefix base64 base64:))

(declare (unit db))
(declare (uses common))
(declare (uses keys))
(declare (uses ods))

(include "common_records.scm")
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		    ((string-match (regexp "no"  #t) syncval) 0)
		    ((string-match (regexp "(off|normal|full)" #t) syncval) syncval)
		    (else 
		     (debug:print 0 "ERROR: synchronous must be 0,1,2,OFF,NORMAL or FULL, you provided: " syncval)
		     #f))))
    (if val
	(begin
	  (debug:print 2 "INFO: Setting pragma synchronous to " val)
	  (debug:print-info 11 "db:set-sync, setting pragma synchronous to " val)
	  (sqlite3:execute db (conc "PRAGMA synchronous = '" val "';"))))))

(define (open-db) ;;  (conc *toppath* "/megatest.db") (car *configinfo*)))
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: Attempted to open db when not in megatest area. Exiting.")
	    (exit))))
  (let* ((dbpath    (conc *toppath* "/megatest.db")) ;; fname)
	 (dbexists  (file-exists? dbpath))
	 (db        (sqlite3:open-database dbpath)) ;; (never-give-up-open-db dbpath))
	 (handler   (make-busy-timeout (if (args:get-arg "-override-timeout")
					   (string->number (args:get-arg "-override-timeout"))
					   36000)))) ;; 136000)))
    (debug:print 4 "INFO: dbpath=" dbpath)
					   136000)))) ;; 136000))) ;; 136000 = 2.2 minutes
    (debug:print-info 11 "open-db, dbpath=" dbpath " argv=" (argv))
    (sqlite3:set-busy-handler! db handler)
    (if (not dbexists)
	(db:initialize db))
    (db:set-sync db)
    db))

;; keeping it around for debugging purposes only
(define (open-run-close-no-exception-handling  proc idb . params)
  (debug:print-info 11 "open-run-close-no-exception-handling START given a db=" (if idb "yes " "no ") ", params=" params)
  (let* ((db   (if idb idb (open-db)))
  (let* ((db   (if idb 
		   (if (procedure? idb)
		       (idb)
		       idb)
		   (open-db)))
	 (res #f))
    (set! res (apply proc db params))
    (if (not idb)(sqlite3:finalize! db))
    (debug:print-info 11 "open-run-close-no-exception-handling END" )
    res))

(define (open-run-close-exception-handling proc idb . params)
  (let ((runner (lambda ()
		  (let* ((db   (if idb idb (open-db)))
			 (res #f))
		    (set! res (apply proc db params))
		    (if (not idb)(sqlite3:finalize! db))
		    res))))
    (handle-exceptions
     exn
     (begin
       (debug:print 0 "EXCEPTION: database probably overloaded?")
       (debug:print 0 "  " ((condition-property-accessor 'exn 'message) exn))
       (print-call-chain)
       (thread-sleep! (random 120))
       (debug:print 0 "trying db call one more time....")
  (handle-exceptions
   exn
   (begin
     (debug:print 0 "EXCEPTION: database probably overloaded?")
     (debug:print 0 "  " ((condition-property-accessor 'exn 'message) exn))
     (print-call-chain)
     (thread-sleep! (random 120))
     (debug:print-info 0 "trying db call one more time....")
       (runner))
     (runner))))
     (apply open-run-close-no-exception-handling proc idb params))
   (apply open-run-close-no-exception-handling proc idb params)))

(define open-run-close open-run-close-exception-handling)
;; (define open-run-close open-run-close-exception-handling)
(define open-run-close open-run-close-no-exception-handling)

(define *global-delta* 0)
(define *last-global-delta-printed* 0)

(define (open-run-close-measure  proc idb . params)
  (debug:print-info 11 "open-run-close-measure START, idb=" idb ", params=" params)
  (let* ((start-ms (current-milliseconds))
	 (db       (if idb idb (open-db)))
         (throttle (string->number (config-lookup *configdat* "setup" "throttle"))))

    (db:set-sync db)
    (set! res      (apply proc db params))
    (if (not idb)(sqlite3:finalize! db))
    ;; scale by 10, average with current value.
    (set! *global-delta* (/ (+ *global-delta* (* (- (current-milliseconds) start-ms)
						 (if throttle throttle 0.01)))
			    2))
    (if (> (abs (- *last-global-delta-printed* *global-delta*)) 0.08) ;; don't print all the time, only if it changes a bit
	(begin
	  (debug:print 1 "INFO: launch throttle factor=" *global-delta*)
	  (debug:print-info 1 "launch throttle factor=" *global-delta*)
	  (set! *last-global-delta-printed* *global-delta*)))
    (debug:print-info 11 "open-run-close-measure END" )
    res))

(define (db:initialize db)
  (debug:print-info 11 "db:initialize START")
  (let* ((configdat (car *configinfo*))  ;; tut tut, global warning...
	 (keys     (config-get-fields configdat))
	 (havekeys (> (length keys) 0))
	 (keystr   (keys->keystr keys))
	 (fieldstr (keys->key/field keys)))
    (for-each (lambda (key)
		(let ((keyn (vector-ref key 0)))
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                                units TEXT,
                                comment TEXT DEFAULT '',
                                status TEXT DEFAULT 'n/a',
                                type TEXT DEFAULT '',
                              CONSTRAINT test_data_constraint UNIQUE (test_id,category,variable));")
    ;; Must do this *after* running patch db !! No more. 
    (db:set-var db "MEGATEST_VERSION" megatest-version)
    (debug:print-info 11 "db:initialize END")
    ))

;;======================================================================
;; T E S T   S P E C I F I C   D B 
;;======================================================================

;;======================================================================
;; T E S T   S P E C I F I C   D B 
;;======================================================================

;; Create the sqlite db for the individual test(s)
(define (open-test-db testpath) 
  (debug:print-info 11 "open-test-db " testpath)
  (if (and testpath 
  (if (and (directory? testpath)
	   (directory? testpath)
	   (file-read-access? testpath))
      (let* ((dbpath    (conc testpath "/testdat.db"))
	     (dbexists  (file-exists? dbpath))
	     (db        (sqlite3:open-database dbpath)) ;; (never-give-up-open-db dbpath))
	     (handler   (make-busy-timeout (if (args:get-arg "-override-timeout")
					       (string->number (args:get-arg "-override-timeout"))
					       36000))))
					       136000))))
	(debug:print 4 "INFO: test dbpath=" dbpath)
	(sqlite3:set-busy-handler! db handler)
	(if (not dbexists)
	    (begin
	      (sqlite3:execute db "PRAGMA synchronous = FULL;")
	      (debug:print 0 "Initialized test database " dbpath)
	      (debug:print-info 11 "Initialized test database " dbpath)
	      (db:testdb-initialize db)))
	;; (sqlite3:execute db "PRAGMA synchronous = 0;")
	(debug:print-info 11 "open-test-db END (sucessful)" testpath)
	db)
      (begin
	(debug:print-info 11 "open-test-db END (unsucessful)" testpath)
      #f))
	#f)))

;; find and open the testdat.db file for an existing test
(define (db:open-test-db-by-test-id db test-id)
  (let* ((test-path (db:test-get-rundir-from-test-id db test-id)))
    (debug:print 3 "TEST PATH: " test-path)
    (open-test-db test-path)))

(define (db:testdb-initialize db)
  (debug:print 11 "db:testdb-initialize START")
  (for-each
   (lambda (sqlcmd)
     (sqlite3:execute db sqlcmd))
   (list "CREATE TABLE IF NOT EXISTS test_rundat (
              id INTEGER PRIMARY KEY,
              update_time TIMESTAMP,
              cpuload INTEGER DEFAULT -1,
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	 ;; e.g. KILLREQ
	 ;;      the ackstate is set to 1 once the command has been completed
	 "CREATE TABLE IF NOT EXISTS test_meta (
              id INTEGER PRIMARY KEY,
              var TEXT,
              val TEXT,
              ackstate INTEGER DEFAULT 0,
              CONSTRAINT metadat_constraint UNIQUE (var));")))
              CONSTRAINT metadat_constraint UNIQUE (var));"))
  (debug:print 11 "db:testdb-initialize END"))

;;======================================================================
;; L O G G I N G    D B 
;;======================================================================

(define (open-logging-db) ;;  (conc *toppath* "/megatest.db") (car *configinfo*)))
  (let* ((dbpath    (conc (if *toppath* (conc *toppath* "/") "") "logging.db")) ;; fname)
	 (dbexists  (file-exists? dbpath))
	 (db        (sqlite3:open-database dbpath)) ;; (never-give-up-open-db dbpath))
	 (handler   (make-busy-timeout (if (args:get-arg "-override-timeout")
					   (string->number (args:get-arg "-override-timeout"))
					   136000)))) ;; 136000)))
    (sqlite3:set-busy-handler! db handler)
    (if (not dbexists)
	(begin
	  (sqlite3:execute db "CREATE TABLE IF NOT EXISTS log (id INTEGER PRIMARY KEY,event_time TIMESTAMP DEFAULT (strftime('%s','now')),logline TEXT,pwd TEXT,cmdline TEXT,pid INTEGER);")
	  (sqlite3:execute db (conc "PRAGMA synchronous = 0;"))))
    db))

(define (db:log-local-event . loglst)
  (let ((logline (apply conc loglst))
	(pwd     (current-directory))
	(cmdline (string-intersperse (argv) " "))
	(pid     (current-process-id)))
    (db:log-event logline pwd cmdline pid)))

(define (db:log-event logline pwd cmdline pid)
  (let ((db (open-logging-db)))
    (sqlite3:execute db "INSERT INTO log (logline,pwd,cmdline,pid) VALUES (?,?,?,?);" logline (current-directory)(string-intersperse (argv) " ")(current-process-id))
    (sqlite3:finalize! db)
    logline))

;;======================================================================
;; L O G G I N G    D B 
;;======================================================================

(define (open-logging-db) ;;  (conc *toppath* "/megatest.db") (car *configinfo*)))
  (let* ((dbpath    (conc (if *toppath* (conc *toppath* "/") "") "logging.db")) ;; fname)
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;;======================================================================
;; meta get and set vars
;;======================================================================

;; returns number if string->number is successful, string otherwise
;; also updates *global-delta*
(define (db:get-var db var)
  (debug:print-info 11 "db:get-var START " var)
  (let* ((start-ms (current-milliseconds))
         (throttle (let ((t  (config-lookup *configdat* "setup" "throttle")))
		     (if t (string->number t) t)))
	 (res      #f))
    (sqlite3:for-each-row
     (lambda (val)
       (set! res val))
     db "SELECT val FROM metadat WHERE var=?;" var)
    ;; convert to number if can
    (if (string? res)
	(let ((valnum (string->number res)))
	  (if valnum (set! res valnum))))
    ;; scale by 10, average with current value.
    (set! *global-delta* (/ (+ *global-delta* (* (- (current-milliseconds) start-ms)
						 (if throttle throttle 0.01)))
			    2))
    (if (> (abs (- *last-global-delta-printed* *global-delta*)) 0.08) ;; don't print all the time, only if it changes a bit
	(begin
	  (debug:print 4 "INFO: launch throttle factor=" *global-delta*)
	  (debug:print-info 4 "launch throttle factor=" *global-delta*)
	  (set! *last-global-delta-printed* *global-delta*)))
    (debug:print-info 11 "db:get-var END " var " val=" res)
    res))

(define (db:set-var db var val)
  (debug:print-info 11 "db:set-var START " var " " val)
  (sqlite3:execute db "INSERT OR REPLACE INTO metadat (var,val) VALUES (?,?);" var val))
  (sqlite3:execute db "INSERT OR REPLACE INTO metadat (var,val) VALUES (?,?);" var val)
  (debug:print-info 11 "db:set-var END " var " " val))

(define (db:del-var db var)
  (debug:print-info 11 "db:del-var START " var)
  (sqlite3:execute db "DELETE FROM metadat WHERE var=?;" var)
  (debug:print-info 11 "db:del-var END " var))

;; use a global for some primitive caching, it is just silly to re-read the db 
;; over and over again for the keys since they never change

(define (db:get-keys db)
  (if *db-keys* *db-keys* 
      (let ((res '()))
	(debug:print-info 11 "db:get-keys START (cache miss)")
	(sqlite3:for-each-row 
	 (lambda (key keytype)
	   (set! res (cons (vector key keytype) res)))
	 db
	 "SELECT fieldname,fieldtype FROM keys ORDER BY id DESC;")
	(set! *db-keys* res)
	(debug:print-info 11 "db:get-keys END (cache miss)")
	res)))

(define (db:get-value-by-header row header field)
  ;; (debug:print 2 "db:get-value-by-header row: " row " header: " header " field: " field)
  (debug:print-info 4 "db:get-value-by-header row: " row " header: " header " field: " field)
  (if (null? header) #f
      (let loop ((hed (car header))
		 (tal (cdr header))
		 (n   0))
	(if (equal? hed field)
	    (vector-ref row n)
	    (if (null? tal) #f (loop (car tal)(cdr tal)(+ n 1)))))))
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		           " ORDER BY event_time DESC "
		           (if (number? count)
		               (conc " LIMIT " count)
		               "")
		           (if (number? offset)
		               (conc " OFFSET " offset)
		               ""))))
    (debug:print 8 "INFO: db:get-runs qrystr: " qrystr "\nkeypatts: " keypatts "\n  offset: " offset " limit: " count)
    (debug:print-info 11 "db:get-runs START qrystr: " qrystr " keypatts: " keypatts " offset: " offset " limit: " count)
    (sqlite3:for-each-row
     (lambda (a . x)
       (set! res (cons (apply vector a x) res)))
     db
     qrystr
     )
    (debug:print-info 11 "db:get-runs END qrystr: " qrystr " keypatts: " keypatts " offset: " offset " limit: " count)
    (vector header res)))

;; just get count of runs
(define (db:get-num-runs db runpatt)
  (let ((numruns 0))
    (debug:print-info 11 "db:get-num-runs START " runpatt)
    (sqlite3:for-each-row 
     (lambda (count)
       (set! numruns count))
     db
     "SELECT COUNT(id) FROM runs WHERE runname LIKE ?;" runpatt)
    (debug:print-info 11 "db:get-num-runs END " runpatt)
    numruns))

;; use (get-value-by-header (db:get-header runinfo)(db:get-row runinfo))
(define (db:get-run-info db run-id)
  (if (hash-table-ref/default *run-info-cache* run-id #f)
      (hash-table-ref *run-info-cache* run-id)
  ;;(if (hash-table-ref/default *run-info-cache* run-id #f)
  ;;    (hash-table-ref *run-info-cache* run-id)
      (let* ((res      #f)
	     (keys      (db:get-keys db))
	     (remfields (list "id" "runname" "state" "status" "owner" "event_time"))
	     (header    (append (map key:get-fieldname keys)
				remfields))
	     (keystr    (conc (keys->keystr keys) ","
			      (string-intersperse remfields ","))))
	;; (debug:print 0 "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
	(debug:print-info 11 "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
	(sqlite3:for-each-row
	 (lambda (a . x)
	   (set! res (apply vector a x)))
	 db
	 (conc "SELECT " keystr " FROM runs WHERE id=?;")
	 run-id)
	(debug:print-info 11 "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
	(let ((finalres (vector header res)))
	  (hash-table-set! *run-info-cache* run-id finalres)
	  finalres))))
	  ;; (hash-table-set! *run-info-cache* run-id finalres)
	  finalres)))

(define (db:set-comment-for-run db run-id comment)
  (debug:print-info 11 "db:set-comment-for-run START run-id: " run-id " comment: " comment)
  (sqlite3:execute db "UPDATE runs SET comment=? WHERE id=?;" comment run-id))
  (sqlite3:execute db "UPDATE runs SET comment=? WHERE id=?;" comment run-id)
  (debug:print-info 11 "db:set-comment-for-run END run-id: " run-id " comment: " comment))

;; does not (obviously!) removed dependent data. But why not!!?
(define (db:delete-run db run-id)
  (common:clear-caches) ;; don't trust caches after doing any deletion
  (sqlite3:execute db "DELETE FROM runs WHERE id=?;" run-id))

(define (db:update-run-event_time db run-id)
  (debug:print-info 11 "db:update-run-event_time START run-id: " run-id)
  (sqlite3:execute db "UPDATE runs SET event_time=strftime('%s','now') WHERE id=?;" run-id)) 
  (sqlite3:execute db "UPDATE runs SET event_time=strftime('%s','now') WHERE id=?;" run-id)
  (debug:print-info 11 "db:update-run-event_time END run-id: " run-id)) 

(define (db:lock/unlock-run db run-id lock unlock user)
  (let ((newlockval (if lock "locked"
			(if unlock
			    "unlocked"
			    "locked")))) ;; semi-failsafe
    (sqlite3:execute db "UPDATE runs SET state=? WHERE id=?;" newlockval run-id)
    (sqlite3:execute db "INSERT INTO access_log (user,accessed,args) VALUES(?,strftime('%s','now'),?);"
		     user (conc newlockval " " run-id))
    (debug:print 1 "INFO: " newlockval " run number " run-id)))
    (debug:print-info 1 "" newlockval " run number " run-id)))

;;======================================================================
;; K E Y S
;;======================================================================

;; get key val pairs for a given run-id
;; ( (FIELDNAME1 keyval1) (FIELDNAME2 keyval2) ... )
(define (db:get-key-val-pairs db run-id)
  (let* ((keys (get-keys db))
	 (res  '()))
    (debug:print 6 "keys: " keys " run-id: " run-id)
    (debug:print-info 11 "db:get-key-val-pairs START keys: " keys " run-id: " run-id)
    (for-each 
     (lambda (key)
       (let ((qry (conc "SELECT " (key:get-fieldname key) " FROM runs WHERE id=?;")))
	 ;; (debug:print 0 "qry: " qry)
	 (sqlite3:for-each-row 
	  (lambda (key-val)
	    (set! res (cons (list (key:get-fieldname key) key-val) res)))
	  db qry run-id)))
     keys)
    (debug:print-info 11 "db:get-key-val-pairs END keys: " keys " run-id: " run-id)
    (reverse res)))

;; get key vals for a given run-id
(define (db:get-key-vals db run-id)
  (let ((mykeyvals (hash-table-ref/default *keyvals* run-id #f)))
    (if mykeyvals 
	mykeyvals
	(let* ((keys (get-keys db))
	       (res  '()))
	  (debug:print 6 "keys: " keys " run-id: " run-id)
	  (debug:print-info 11 "db:get-key-vals START keys: " keys " run-id: " run-id)
	  (for-each 
	   (lambda (key)
	     (let ((qry (conc "SELECT " (key:get-fieldname key) " FROM runs WHERE id=?;")))
	       ;; (debug:print 0 "qry: " qry)
	       (sqlite3:for-each-row 
		(lambda (key-val)
		  (set! res (cons key-val res)))
		db qry run-id)))
	   keys)
	  (debug:print-info 11 "db:get-key-vals END keys: " keys " run-id: " run-id)
	  (let ((final-res (reverse res)))
	    (hash-table-set! *keyvals* run-id final-res)
	    final-res)))))

;; The target is keyval1/keyval2..., cached in *target* as it is used often
(define (db:get-target db run-id)
  (let ((mytarg (hash-table-ref/default *target* run-id #f)))
    (if mytarg
	mytarg
	(let* ((keyvals (db:get-key-vals db run-id))
	       (thekey  (string-intersperse (map (lambda (x)(if x x "-na-")) keyvals) "/")))
	  (hash-table-set! *target* run-id thekey)
	  thekey))))

;;======================================================================
;;  T E S T S
;;======================================================================

(define (db:tests-register-test db run-id test-name item-path)
  (debug:print 4 "INFO: db:tests-register-test db=" db ", run-id=" run-id ", test-name=" test-name ", item-path=\"" item-path "\"")
  (debug:print-info 11 "db:tests-register-test START db=" db ", run-id=" run-id ", test-name=" test-name ", item-path=\"" item-path "\"")
  (let ((item-paths (if (equal? item-path "")
			(list item-path)
			(list item-path ""))))
    (for-each 
     (lambda (pth)
       (sqlite3:execute db "INSERT OR IGNORE INTO tests (run_id,testname,event_time,item_path,state,status) VALUES (?,?,strftime('%s','now'),?,'NOT_STARTED','n/a');" 
			run-id 
			test-name
			pth))
     item-paths)
  (debug:print-info 11 "db:tests-register-test END db=" db ", run-id=" run-id ", test-name=" test-name ", item-path=\"" item-path "\"")
    #f))


;; states and statuses are lists, turn them into ("PASS","FAIL"...) and use NOT IN
;; i.e. these lists define what to NOT show.
;; states and statuses are required to be lists, empty is ok
;; not-in #t = above behaviour, #f = must match
(define (db:get-tests-for-run db run-id testpatt itempatt states statuses 
(define (db:get-tests-for-run db run-id testpatt states statuses 
			      #!key (not-in #t)
			      (sort-by #f) ;; 'rundir 'event_time
			      )
  (debug:print-info 11 "db:get-tests-for-run START run-id=" run-id ", testpatt=" testpatt ", states=" states ", statuses=" statuses ", not-in=" not-in ", sort-by=" sort-by)
  (let* ((res '())
	 ;; if states or statuses are null then assume match all when not-in is false
	 (states-qry      (if (null? states) 
			      #f
			      (conc " state "  
				    (if not-in "NOT" "") 
				    " IN ('" 
	 (states-str    (conc " state in ('" (string-intersperse states   "','") "')"))
	 (statuses-str  (conc " status in ('" (string-intersperse statuses "','") "')"))
	 (state-status-qry (if (or (not (null? states))
				   (not (null? states)))
			       (conc " AND " (if not-in "NOT" "") " (" states-str " AND " statuses-str ") ")
			       ""))
	 (qry      (conc "SELECT id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment "
			 " FROM tests WHERE run_id=? AND "
				    (string-intersperse states   "','")
				    "')")))
	 (statuses-qry    (if (null? statuses)
			      #f
			      (conc " status "
				    (if not-in "NOT" "") 
				    " IN ('" 
				    (string-intersperse statuses "','")
				    "')")))
	 (tests-match-qry (tests:match->sqlqry testpatt))
	 (qry             (conc "SELECT id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment "
				" FROM tests WHERE run_id=? "
			 ;; testname like ? AND item_path LIKE ? " 
			 (db:patt->like "testname" testpatt) " AND "
				(if states-qry   (conc " AND " states-qry)   "")
			 (db:patt->like "item_path" itempatt)
			 state-status-qry
			 (case sort-by
			   ((rundir)     " ORDER BY length(rundir) DESC;")
			   ((event_time) " ORDER BY event_time ASC;")
			   (else         ";"))
				(if statuses-qry (conc " AND " statuses-qry) "")
				(if tests-match-qry (conc " AND (" tests-match-qry ") ") "")
				(case sort-by
				  ((rundir)     " ORDER BY length(rundir) DESC;")
				  ((event_time) " ORDER BY event_time ASC;")
				  (else         ";"))
			 )))
    (debug:print 8 "INFO: db:get-tests-for-run qry=" qry)
    (debug:print-info 8 "db:get-tests-for-run qry=" qry)
    (sqlite3:for-each-row 
     (lambda (a . b) ;; id run-id testname state status event-time host cpuload diskfree uname rundir item-path run-duration final-logf comment)
       (set! res (cons (apply vector a b) res))) ;; id run-id testname state status event-time host cpuload diskfree uname rundir item-path run-duration final-logf comment) res)))
     db 
     qry
     run-id
     ;; (if testpatt testpatt "%")
     ;; (if itempatt itempatt "%"))
     )
    (debug:print-info 11 "db:get-tests-for-run START run-id=" run-id ", testpatt=" testpatt ", states=" states ", statuses=" statuses ", not-in=" not-in ", sort-by=" sort-by)
    res))

;; this one is a bit broken BUG FIXME
(define (db:delete-test-step-records db test-id)
  ;; Breaking it into two queries for better file access interleaving
  (let* ((tdb (db:open-test-db-by-test-id db test-id)))
    ;; test db's can go away - must check every time
    (if tdb
	(begin
	  (sqlite3:execute tdb "DELETE FROM test_steps;")
	  (sqlite3:execute tdb "DELETE FROM test_data;")
	  (sqlite3:finalize! tdb)))))

;; 
(define (db:delete-test-records db tdb test-id #!key (force #f))
  (common:clear-caches)
  (if tdb 
      (begin
	(sqlite3:execute tdb "DELETE FROM test_steps;")
	(sqlite3:execute tdb "DELETE FROM test_data;")))
  ;; (sqlite3:execute db "DELETE FROM tests WHERE id=?;" test-id))
  (if db 
      (begin
	(sqlite3:execute db "DELETE FROM test_steps WHERE test_id=?;" test-id)
	(sqlite3:execute db "DELETE FROM test_data  WHERE test_id=?;" test-id)
	(if force
	    (sqlite3:execute db "DELETE FROM tests WHERE id=?;" test-id)
	    (sqlite3:execute db "UPDATE tests SET state='DELETED',status='n/a' WHERE id=?;" test-id)))))

(define (db:delete-tests-for-run db run-id)
  (common:clear-caches)
  (sqlite3:execute db "DELETE FROM tests WHERE run_id=?;" run-id))

(define (db:delete-old-deleted-test-records db)
  (let ((targtime (- (current-seconds)(* 30 24 60 60)))) ;; one month in the past
    (sqlite3:execute db "DELETE FROM tests WHERE state='DELETED' AND event_time<?;" targtime)))

;; set tests with state currstate and status currstatus to newstate and newstatus
;; use currstate = #f and or currstatus = #f to apply to any state or status respectively
;; WARNING: SQL injection risk
(define (db:set-tests-state-status db run-id testnames currstate currstatus newstate newstatus)
  (for-each (lambda (testname)
	      (let ((qry (conc "UPDATE tests SET state=?,status=? WHERE "
			       (if currstate  (conc "state='" currstate "' AND ") "")
			       (if currstatus (conc "status='" currstatus "' AND ") "")
			       " run_id=? AND testname=? AND NOT (item_path='' AND testname in (SELECT DISTINCT testname FROM tests WHERE testname=? AND item_path != ''));")))
		;;(debug:print 0 "QRY: " qry)
		(sqlite3:execute db qry run-id newstate newstatus testname testname)))
	    testnames))

(define (db:delete-tests-in-state db run-id state)
  (sqlite3:execute db "DELETE FROM tests WHERE state=? AND run_id=?;" state run-id))
(define (cdb:delete-tests-in-state serverdat run-id state)
  (cdb:client-call serverdat 'delete-tests-in-state #t *default-numtries* run-id state))

;; speed up for common cases with a little logic
(define (db:test-set-state-status-by-id db test-id newstate newstatus newcomment)
  (cond
   ((and newstate newstatus newcomment)
    (sqlite3:exectute db "UPDATE tests SET state=?,status=?,comment=? WHERE id=?;" newstate newstatus test-id))
   ((and newstate newstatus)
    (sqlite3:exectute db "UPDATE tests SET state=?,status=? WHERE id=?;" newstate newstatus test-id))
    (sqlite3:execute db "UPDATE tests SET state=?,status=? WHERE id=?;" newstate newstatus test-id))
   (else
    (if newstate   (sqlite3:execute db "UPDATE tests SET state=?   WHERE id=?;" newstate   test-id))
    (if newstatus  (sqlite3:execute db "UPDATE tests SET status=?  WHERE id=?;" newstatus  test-id))
    (if newcomment (sqlite3:execute db "UPDATE tests SET comment=? WHERE id=?;" newcomment test-id)))))

(define (db:test-set-state-status-by-run-id-testname db run-id test-name item-path status state)
  (sqlite3:execute db "UPDATE tests SET state=?,status=?,event_time=strftime('%s','now') WHERE run_id=? AND testname=? AND item_path=?;" 
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     (lambda (id) ;;  run-id testname state status event-time host cpuload diskfree uname rundir item-path run_duration final_logf comment )
       (set! res id)) ;; (vector id run-id testname state status event-time host cpuload diskfree uname rundir item-path run_duration final_logf comment )))
     db 
     "SELECT id FROM tests WHERE run_id=? AND testname=? AND item_path=?;"
     run-id testname item-path)
    res))

(define db:get-test-id db:get-test-id-cached)
(define db:get-test-id db:get-test-id-not-cached)

;; given a test-info record, patch in the latest data from the testdat.db file
;; found in the test run directory
(define (db:patch-tdb-data-into-test-info db test-id res)
  (let ((tdb (db:open-test-db-by-test-id db test-id)))
    ;; get state and status from megatest.db in real time
    ;; other fields that perhaps should be updated:
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  (let* ((last-delete-str (db:get-var db "DELETED_TESTS"))
	 (last-delete     (if (string? last-delete-str)(string->number last-delete-str) #f)))
    (if (and last-delete (> last-delete *last-test-cache-delete*))
	(begin
	  (set! *test-info* (make-hash-table))
	  (set! *test-id-cache* (make-hash-table))
	  (set! *last-test-cache-delete* last-delete)
	  (debug:print 4 "INFO: Clearing test data cache"))))
	  (debug:print-info 4 "Clearing test data cache"))))
  (if (not test-id)
      (begin
	(debug:print 4 "INFO: db:get-test-info-by-id called with test-id=" test-id)
	(debug:print-info 4 "db:get-test-info-by-id called with test-id=" test-id)
	#f)
      (let* ((res (hash-table-ref/default *test-info* test-id #f)))
	(if (and res
		 (member (db:test-get-state res) '("RUNNING" "COMPLETED")))
	    (db:patch-tdb-data-into-test-info db test-id res)
	    ;; if no cached value then full read and write to cache
	    (begin
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	      (if res (db:patch-tdb-data-into-test-info db test-id res))
	      res)))))

;; Get test data using test_id
(define (db:get-test-info-not-cached-by-id db test-id)
  (if (not test-id)
      (begin
	(debug:print 4 "INFO: db:get-test-info-by-id called with test-id=" test-id)
	(debug:print-info 4 "db:get-test-info-by-id called with test-id=" test-id)
	#f)
      (let ((res #f))
	(sqlite3:for-each-row
	 (lambda (id run-id testname state status event-time host cpuload diskfree uname rundir item-path run_duration final_logf comment)
	   ;;                 0    1       2      3      4        5       6      7        8     9     10      11          12          13       14
	   (set! res (vector id run-id testname state status event-time host cpuload diskfree uname rundir item-path run_duration final_logf comment)))
	 db 
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(define (db:test-set-comment db test-id comment)
  (sqlite3:execute 
   db 
   "UPDATE tests SET comment=? WHERE id=?;"
   comment test-id))

;;
(define (db:test-set-rundir! db run-id test-name item-path rundir)
(define (cdb:test-set-rundir! serverdat run-id test-name item-path rundir)
  (sqlite3:execute 
   db 
   "UPDATE tests SET rundir=? WHERE run_id=? AND testname=? AND item_path=?;"
   rundir run-id test-name item-path))
  (cdb:client-call serverdat 'test-set-rundir #t *default-numtries* rundir run-id test-name item-path))

(define (db:test-set-rundir-by-test-id! db test-id rundir)
(define (cdb:test-set-rundir-by-test-id serverdat test-id rundir)
  (sqlite3:execute 
   db 
   "UPDATE tests SET rundir=? WHERE id=?"
   rundir test-id))
  (cdb:client-call serverdat 'test-set-rundir-by-test-id #t *default-numtries* rundir test-id))

;; 
(define (db:test-get-rundir-from-test-id db test-id)
  (let ((res (hash-table-ref/default *test-paths* test-id #f)))
    (if res
	res
	(begin
	  (sqlite3:for-each-row
	   (lambda (tpath)
	     (set! res tpath))
	   db 
	   "SELECT rundir FROM tests WHERE id=?;"
	   test-id)
	  (hash-table-set! *test-paths* test-id res)
	  res))))
  (let ((res #f)) ;; (hash-table-ref/default *test-paths* test-id #f)))
    ;; (if res
    ;;     res
    ;;     (begin
    (sqlite3:for-each-row
     (lambda (tpath)
       (set! res tpath))
     db 
     "SELECT rundir FROM tests WHERE id=?;"
     test-id)
    ;; (hash-table-set! *test-paths* test-id res)
    res)) ;; ))

(define (db:test-set-log! db test-id logf)
  (if (string? logf)
(define (cdb:test-set-log! serverdat test-id logf)
  (if (string? logf)(cdb:client-call serverdat 'test-set-log #f *default-numtries* logf test-id)))
      (sqlite3:execute db "UPDATE tests SET final_logf=? WHERE id=?;"
		       logf test-id)
      (debug:print 0 "ERROR: db:test-set-log! called with non-string log file name " logf)))

;;======================================================================
;; Misc. test related queries
;;======================================================================

(define (db:test-get-paths-matching db keynames target fnamepatt #!key (res '()))
  (let* ((itempatt   (if (args:get-arg "-itempatt")(args:get-arg "-itempatt") "%"))
	 (testpatt   (if (args:get-arg "-testpatt")(args:get-arg "-testpatt") "%"))
  (let* ((testpatt   (if (args:get-arg "-testpatt")(args:get-arg "-testpatt") "%"))
	 (statepatt  (if (args:get-arg ":state")   (args:get-arg ":state")    "%"))
	 (statuspatt (if (args:get-arg ":status")  (args:get-arg ":status")   "%"))
	 (runname    (if (args:get-arg ":runname") (args:get-arg ":runname")  "%"))
	 (keystr (string-intersperse 
		  (map (lambda (key val)
			 (conc "r." key " like '" val "'"))
		       keynames 
		       (string-split target "/"))
		  " AND "))
	 (testqry (tests:match->sqlqry testpatt))
	 (qrystr (conc "SELECT t.rundir FROM tests AS t INNER JOIN runs AS r ON t.run_id=r.id WHERE "
		       keystr " AND r.runname LIKE '" runname "' AND item_path LIKE '" itempatt "' AND testname LIKE '"
		       testpatt "' AND t.state LIKE '" statepatt "' AND t.status LIKE '" statuspatt 
		       "'ORDER BY t.event_time ASC;")))
		       keystr " AND r.runname LIKE '" runname "' AND " testqry
		       " AND t.state LIKE '" statepatt "' AND t.status LIKE '" statuspatt 
		       "' ORDER BY t.event_time ASC;")))
    (debug:print 3 "qrystr: " qrystr)
    (sqlite3:for-each-row 
     (lambda (p)
       (set! res (cons p res)))
     db 
     qrystr)
    (if fnamepatt
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    (let loop ((pathdat (if (null? paths) #f (car mt-paths)))
	       (tal     (if (null? paths) '()(cdr mt-paths))))
      (if (not (null? res))
	  (car res) ;; return first found
	  (if path
	      (let* ((db     (open-db path: (cadr pathdat)))
		     (newres (db:test-get-paths-matching db keynames target fname)))
		(debug:print 4 "INFO: Trying " (car pathdat) " at " (cadr pathdat))
		(debug:print-info 4 "Trying " (car pathdat) " at " (cadr pathdat))
		(sqlite3:finalize! db)
		(if (not (null? newres))
		    (car newres)
		    (if (null? tal)
			#f
			(loop (car tal)(cdr tal))))))))))

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                            t.logdat     
                            t.run_duratio
                            t.comment    
                            t.event_time 
                            t.fail_count 
                            t.pass_count 
                            t.archived   



 FROM tests AS t INNER JOIN runs AS r ON t.run_id=r.id WHERE "
                           FROM tests AS t INNER JOIN runs AS r ON t.run_id=r.id WHERE "
		       keystr " AND r.runname LIKE '" runname "' AND item_path LIKE '" itempatt "' AND testname LIKE '"
		       testpatt "' AND t.state LIKE '" statepatt "' AND t.status LIKE '" statuspatt 
		       "'ORDER BY t.event_time ASC;")))
    (debug:print 3 "qrystr: " qrystr)
    (sqlite3:for-each-row 
     (lambda (p)
       (set! res (cons p res)))
     db 
     qrystr)
    res))

;;======================================================================
;; QUEUE UP META, TEST STATUS AND STEPS
;; QUEUE UP META, TEST STATUS AND STEPS REMOTE ACCESS
;;======================================================================

;; db:updater is run in a thread to write out the cached data periodically
(define (db:updater)
  (debug:print 4 "INFO: Starting cache processing")
  (let loop ((start-time (current-time)))
    (thread-sleep! 10) ;; move save time around to minimize regular collisions?
    (db:write-cached-data)
    (loop start-time)))

(define (cdb:test-set-status-state test-id status state msg)
;; (define (db:updater)
;;   (debug:print-info 4 "Starting cache processing")
;;   (let loop ()
;;     (thread-sleep! 10) ;; move save time around to minimize regular collisions?
;;     (db:write-cached-data)
;;     (loop)))

(define (db:obj->string obj)
  (string-substitute
   (regexp "=") "_"
   (base64:base64-encode (with-output-to-string (lambda ()(serialize obj))))
   #t))

(define (db:string->obj msg)
  (with-input-from-string 
      (base64:base64-decode
       (string-substitute 
	(regexp "_") "=" msg #t))
    (lambda ()(deserialize))))

(define (cdb:use-non-blocking-mode proc)
  (set! *client-non-blocking-mode* #t)
  (let ((res (proc)))
    (set! *client-non-blocking-mode* #f)
    res))
  
;; params = 'target cached remparams
;;
;; make-vector-record cdb packet client-sig qtype immediate query-sig params qtime
;;
(define (cdb:client-call serverdat qtype immediate numretries . params)
  (debug:print 4 "INFO: cdb:test-set-status-state test-id=" test-id ", status=" status ", state=" state ", msg=" msg)
  (mutex-lock! *incoming-mutex*)
  (debug:print-info 11 "cdb:client-call serverdat=" serverdat ", qtype=" qtype ", immediate=" immediate ", numretries=" numretries ", params=" params)
  ;; (handle-exceptions
  ;;  exn
  (set! *last-db-access* (current-seconds))
  (if msg
  ;;  (begin
      (set! *incoming-data* (cons (vector 'state-status-msg
					  (current-milliseconds)
					  (list state status msg test-id))
  ;;    (thread-sleep! 5) 
  ;;    (if (> numretries 0)(apply cdb:client-call serverdat qtype immediate (- numretries 1) params)))
   (let* ((client-sig  (server:get-client-signature))
	  (query-sig   (message-digest-string (md5-primitive) (conc qtype immediate params)))
	  (zdat        (db:obj->string (vector client-sig qtype immediate query-sig params (current-seconds)))) ;; (with-output-to-string (lambda ()(serialize params))))
	  )
     (debug:print-info 11 "zdat=" zdat)
     (let* (
				  *incoming-data*))
      (set! *incoming-data* (cons (vector 'state-status
					  (current-milliseconds)
	  (res  #f)
					  (list state status test-id)) ;; run-id test-name item-path minutes cpuload diskfree tmpfree) 
				  *incoming-data*)))
  (mutex-unlock! *incoming-mutex*)
  (if *cache-on*
      (debug:print 6 "INFO: *cache-on* is " *cache-on* ", skipping cache write")
      (db:write-cached-data)))
  
(define (cdb:test-rollup-test_data-pass-fail test-id)
  (debug:print 4 "INFO: Adding " test-id " for test_data rollup to the queue")
  (mutex-lock! *incoming-mutex*)
  (set! *last-db-access* (current-seconds))
  (set! *incoming-data* (cons (vector 'test_data-pf-rollup
				      (current-milliseconds)
				      (list test-id test-id test-id test-id))
			      *incoming-data*))
  (mutex-unlock! *incoming-mutex*)
  (if *cache-on*
      (debug:print 6 "INFO: *cache-on* is " *cache-on* ", skipping cache write")
      (db:write-cached-data)))

(define (cdb:pass-fail-counts test-id fail-count pass-count)
	  (rawdat      (server:client-send-receive serverdat zdat))
	  (tmp         #f))
     (debug:print-info 11 "Sent " zdat ", received " rawdat)
     (set! tmp (db:string->obj rawdat))
     ;; (if (equal? query-sig (vector-ref myres 1))
     ;; (set! res
     (vector-ref tmp 2)
     ;; (loop (server:client-send-receive serverdat zdat)))))))
	  ;; (timeout (lambda ()
	  ;;            (let loop ((n numretries))
	  ;;              (thread-sleep! 15)
	  ;;              (if (not res)
	  ;;       	   (if (> numretries 0)
	  ;;       	       (begin
	  ;;       		 (debug:print 2 "WARNING: no reply to query " params ", trying resend")
	  ;;       		 (debug:print-info 11 "re-sending message")
	  ;;       		 (apply cdb:client-call serverdat qtype immediate numretries params)
	  ;;       		 (debug:print-info 11 "message re-sent")
	  ;;       		 (loop (- n 1)))
	  ;;       	       ;; (apply cdb:client-call serverdats qtype immediate (- numretries 1) params))
	  ;;       	       (begin
	  ;;       		 (debug:print 0 "ERROR: cdb:client-call timed out " params ", exiting.")
	  ;;       		 (exit 5))))))))
     ;; (send-receive)
     )))
     ;; (debug:print-info 11 "Starting threads")
     ;; (let ((th1 (make-thread send-receive "send receive"))
     ;;       (th2 (make-thread timeout      "timeout")))
     ;;   (thread-start! th1)
     ;;   (thread-start! th2)
     ;;   (thread-join!  th1)
     ;;   (debug:print-info 11 "cdb:client-call returning res=" res)
     ;;   res))))
  
(define (cdb:set-verbosity serverdat val)
  (debug:print 4 "INFO: Adding " test-id " for setting pass/fail counts to the queue")
  (mutex-lock! *incoming-mutex*)
  (set! *last-db-access* (current-seconds))
  (set! *incoming-data* (cons (vector 'pass-fail-counts
				      (current-milliseconds)
				      (list fail-count pass-count test-id))
			      *incoming-data*))
  (mutex-unlock! *incoming-mutex*)
  (if *cache-on*
      (debug:print 6 "INFO: *cache-on* is " *cache-on* ", skipping cache write")
      (db:write-cached-data)))
  (cdb:client-call serverdat 'set-verbosity #f *default-numtries* val))

(define (cdb:login serverdat keyval signature)
  (cdb:client-call serverdat 'login #t *default-numtries* keyval megatest-version signature))

(define (cdb:logout serverdat keyval signature)
  (cdb:client-call serverdat 'logout #t *default-numtries* keyval signature))

(define (cdb:num-clients serverdat)
  (cdb:client-call serverdat 'numclients #t *default-numtries*))

(define (cdb:test-set-status-state serverdat test-id status state msg)
  (if msg
      (cdb:client-call serverdat 'state-status-msg #t *default-numtries* state status msg test-id)
      (cdb:client-call serverdat 'state-status #t *default-numtries* state status test-id))) ;; run-id test-name item-path minutes cpuload diskfree tmpfree) 

(define (cdb:test-rollup-test_data-pass-fail serverdat test-id)
  (cdb:client-call serverdat 'test_data-pf-rollup #t *default-numtries* test-id test-id test-id test-id))

(define (cdb:pass-fail-counts serverdat test-id fail-count pass-count)
  (cdb:client-call serverdat 'pass-fail-counts #t *default-numtries* fail-count pass-count test-id))

(define (cdb:tests-register-test db run-id test-name item-path #!key (force-write #f))
(define (cdb:tests-register-test serverdat run-id test-name item-path)
  (let ((item-paths (if (equal? item-path "")
			(list item-path)
			(list item-path ""))))
    (debug:print 4 "INFO: Adding " run-id ", " test-name "/" item-path " for setting pass/fail counts to the queue")
    (mutex-lock! *incoming-mutex*)
    (set! *last-db-access* (current-seconds))
    (set! *incoming-data* (cons (vector 'register-test
					(current-milliseconds)
					(list run-id test-name item-path)) ;; fail-count pass-count test-id))
				*incoming-data*))
    (mutex-unlock! *incoming-mutex*)
    (if (and (not force-write) *cache-on*)
	(debug:print 6 "INFO: *cache-on* is " *cache-on* ", skipping cache write")
	(db:write-cached-data))))
    (cdb:client-call serverdat 'register-test #t *default-numtries* run-id test-name item-path)))

(define (cdb:flush-queue serverdat)
  (cdb:client-call serverdat 'flush #f *default-numtries*))

(define (cdb:kill-server serverdat)
  (cdb:client-call serverdat 'killserver #f *default-numtries*))

(define (cdb:roll-up-pass-fail-counts serverdat run-id test-name item-path status)
  (cdb:client-call serverdat 'immediate #f *default-numtries* open-run-close db:roll-up-pass-fail-counts #f run-id test-name item-path status))

(define (cdb:get-test-info serverdat run-id test-name item-path)
  (cdb:client-call serverdat 'immediate #f *default-numtries* open-run-close db:get-test-info #f run-id test-name item-path))

(define (cdb:get-test-info-by-id serverdat test-id)
  (cdb:client-call serverdat 'immediate #f *default-numtries* open-run-close db:get-test-info-by-id #f test-id))

;; db should be db open proc or #f
(define (cdb:remote-run proc db . params)
  (apply cdb:client-call *runremote* 'immediate #f *default-numtries* open-run-close proc #f params))

(define (db:test-get-logfile-info db run-id test-name)
  (let ((res #f))
    (sqlite3:for-each-row 
     (lambda (path final_logf)
       (set! logf final_logf)
       (set! res (list path final_logf))
       (if (directory? path)
	   (debug:print 2 "Found path: " path)
	   (debug:print 2 "No such path: " path)))
     db
     "SELECT rundir,final_logf FROM tests WHERE run_id=? AND testname=? AND item_path='';"
     run-id test-name)
    res))

(define db:queries 
  (list '(register-test          "INSERT OR IGNORE INTO tests (run_id,testname,event_time,item_path,state,status) VALUES (?,?,strftime('%s','now'),?,'NOT_STARTED','n/a');")
	'(state-status           "UPDATE tests SET state=?,status=? WHERE id=?;")
	'(state-status-msg       "UPDATE tests SET state=?,status=?,comment=? WHERE id=?;")
	'(pass-fail-counts       "UPDATE tests SET fail_count=?,pass_count=? WHERE id=?;")
	;; test_data-pf-rollup is used to set a tests PASS/FAIL based on the pass/fail info from the steps
	'(test_data-pf-rollup    "UPDATE tests
                                    SET status=CASE WHEN (SELECT fail_count FROM tests WHERE id=?) > 0 
                                      THEN 'FAIL'
                                    WHEN (SELECT pass_count FROM tests WHERE id=?) > 0 AND 
                                      (SELECT status FROM tests WHERE id=?) NOT IN ('WARN','FAIL')
                                    THEN 'PASS'
                                    ELSE status
                                    END WHERE id=?;")
	'(test-set-log            "UPDATE tests SET final_logf=? WHERE id=?;")
	'(test-set-rundir-by-test-id "UPDATE tests SET rundir=? WHERE id=?")
	'(test-set-rundir         "UPDATE tests SET rundir=? WHERE run_id=? AND testname=? AND item_path=?;")
	'(delete-tests-in-state   "DELETE FROM tests WHERE state=? AND run_id=?;")
	'(tests:test-set-toplog   "UPDATE tests SET final_logf=? WHERE run_id=? AND testname=? AND item_path='';")
    ))

;; do not run these as part of the transaction
(define db:special-queries   '(rollup-tests-pass-fail
			       db:roll-up-pass-fail-counts
                               login
                               immediate
			       flush
			       sync
			       set-verbosity
			       killserver))

;; not used, intended to indicate to run in calling process
(define db:run-local-queries '()) ;; rollup-tests-pass-fail))

;; The queue is a list of vectors where the zeroth slot indicates the type of query to
;; apply and the second slot is the time of the query and the third entry is a list of 
;; values to be applied
;;
(define (db:write-cached-data)
  (open-run-close
   (lambda (db . params)
(define (db:process-queue db pubsock indata)
  (let* ((data       (sort indata (lambda (a b)
				    (< (cdb:packet-get-qtime a)(cdb:packet-get-qtime b))))))
    (for-each
     (lambda (item)
     (let ((register-test-stmt    (sqlite3:prepare db "INSERT OR IGNORE INTO tests (run_id,testname,event_time,item_path,state,status) VALUES (?,?,strftime('%s','now'),?,'NOT_STARTED','n/a');"))
	   (state-status-stmt     (sqlite3:prepare db "UPDATE tests SET state=?,status=? WHERE id=?;"))
	   (state-status-msg-stmt (sqlite3:prepare db "UPDATE tests SET state=?,status=?,comment=? WHERE id=?;"))
       (db:process-queue-item db pubsock item))
	   (pass-fail-counts-stmt (sqlite3:prepare db "UPDATE tests SET fail_count=?,pass_count=? WHERE id=?;"))
	   (test_data-rollup-stmt  (sqlite3:prepare db "UPDATE tests
                                             SET status=CASE WHEN (SELECT fail_count FROM tests WHERE id=?) > 0 
                                                THEN 'FAIL'
                                             WHEN (SELECT pass_count FROM tests WHERE id=?) > 0 AND 
                                                  (SELECT status FROM tests WHERE id=?) NOT IN ('WARN','FAIL')
     data)))

(define (db:process-queue-item db item)
  (let* ((stmt-key       (cdb:packet-get-qtype item))
	 (qry-sig        (cdb:packet-get-query-sig item))
	 (return-address (cdb:packet-get-client-sig item))
                                             THEN 'PASS'
                                             ELSE status
                                         END WHERE id=?;"))
	   (data                  #f)
	   (rollups               (make-hash-table)))
	 (params         (cdb:packet-get-params item))
	 (query          (let ((q (alist-ref stmt-key db:queries)))
       (mutex-lock! *incoming-mutex*)
       (set! data (sort *incoming-data* (lambda (a b)(< (vector-ref a 1)(vector-ref b 1)))))
       (set! *incoming-data* '())
       (mutex-unlock! *incoming-mutex*)
       (if (> (length data) 0)
	   (debug:print 4 "INFO: Writing cached data " data))
       (sqlite3:with-transaction 
	db
	(lambda ()
	  (debug:print 4 "INFO: flushing " data " to db")
	  (for-each (lambda (entry)
		      (let ((params (vector-ref entry 2)))
			(debug:print 4 "INFO: Applying " entry " to params " params)
			(case (vector-ref entry 0)
			   (if q (car q) #f))))
    (debug:print-info 11 "Special queries/requests stmt-key=" stmt-key ", return-address=" return-address ", query=" query ", params=" params)
    (cond
     (query
      (apply sqlite3:execute db query params)
      (server:reply return-address qry-sig #t #t))
     ((member stmt-key db:special-queries)
      (debug:print-info 11 "Handling special statement " stmt-key)
      (case stmt-key
	((immediate)
	 (let ((proc      (car params))
	       (remparams (cdr params)))
	   ;; we are being handed a procedure so call it
	   (debug:print-info 11 "Running (apply " proc " " remparams ")")
	   (server:reply return-address qry-sig #t (apply proc remparams))))
	((login)
	 (if (< (length params) 3) ;; should get toppath, version and signature
	     (server:reply return-address qry-sig '(#f "login failed due to missing params")) ;; missing params
	     (let ((calling-path (car   params))
		   (calling-vers (cadr  params))
		   (client-key   (caddr params)))
	       (if (and (equal? calling-path *toppath*)
			  ((state-status)
			   (apply sqlite3:execute state-status-stmt     params))
			  ((state-status-msg)
			   (apply sqlite3:execute state-status-msg-stmt params))
			  ((test_data-pf-rollup)
			   ;; (hash-table-set! rollups (car params) params))
			   (apply sqlite3:execute test_data-rollup-stmt  params))
			  ((pass-fail-counts)
			   (apply sqlite3:execute pass-fail-counts-stmt params))
			  ((register-test)
			   (apply sqlite3:execute register-test-stmt    params))
			  (else
			   (debug:print 0 "ERROR: Queued entry not recognised " entry)))))
		    data)))
       ;; now do any rollups
       ;; (for-each
       ;;  (lambda (test-id)
			(equal? megatest-version calling-vers))
		   (begin
		     (hash-table-set! *logged-in-clients* client-key (current-seconds))
		     (server:reply return-address qry-sig #t '(#t "successful login")))      ;; path matches - pass! Should vet the caller at this time ...
		   (server:reply return-address qry-sig #f (list #f (conc "Login failed due to mismatch paths: " calling-path ", " *toppath*)))))))
	((flush sync)
	 (server:reply return-address qry-sig #t 1)) ;; (length data)))
	((set-verbosity)
	 (set! *verbosity* (car params))
	 (server:reply return-address qry-sig #t '(#t *verbosity*)))
	((killserver)
	 (debug:print 0 "WARNING: Server going down in 15 seconds by user request!")
	 (open-run-close tasks:server-deregister tasks:open-db 
			 (car *runremote*)
			 pullport: (cadr *runremote*))
	 (thread-start! (make-thread (lambda ()(thread-sleep! 15)(exit))))
	 (server:reply return-address qry-sig #t '(#t "exit process started")))
	(else ;; not a command, i.e. is a query
	 (debug:print 0 "ERROR: Unrecognised query/command " stmt-key)
	 (server:reply pubsock return-address qry-sig #f 'failed))))
     (else
      (debug:print-info 11 "Executing " stmt-key " for " params)
      (apply sqlite3:execute (hash-table-ref queries stmt-key) params)
      (server:reply return-address qry-sig #t #t)))))

(define (db:test-get-records-for-index-file db run-id test-name)
  (let ((res '()))
    (sqlite3:for-each-row 
     (lambda (id itempath state status run_duration logf comment)
       ;;    (apply sqlite3:execute test_data-rollup-stmt (hash-table-ref rollups test-id)))
       ;;  (hash-table-keys rollups))
       (sqlite3:finalize! state-status-stmt)
       (sqlite3:finalize! state-status-msg-stmt)
       (sqlite3:finalize! test_data-rollup-stmt)
       (sqlite3:finalize! pass-fail-counts-stmt)
       (sqlite3:finalize! register-test-stmt)
       (set! res (cons (vector id itempath state status run_duration logf comment) res)))
     db
     "SELECT id,item_path,state,status,run_duration,final_logf,comment FROM tests WHERE run_id=? AND testname=? AND item_path != '';"
     run-id test-name)
       (let ((cache-size (length data)))
	 (if (> cache-size *max-cache-size*)
	     (set! *max-cache-size* cache-size)))
       ))
    res))
   #f))

(define cdb:flush-queue db:write-cached-data)

;; Rollup the pass/fail counts from itemized tests into fail_count and pass_count
(define (db:roll-up-pass-fail-counts db run-id test-name item-path status)
  (rdb:flush-queue)
  ;; (cdb:flush-queue *runremote*)
  (if (and (not (equal? item-path ""))
	   (or (equal? status "PASS")
	       (equal? status "WARN")
	   (member status '("PASS" "WARN" "FAIL" "WAIVED" "RUNNING" "CHECK")))
	       (equal? status "FAIL")
	       (equal? status "WAIVED")
	       (equal? status "RUNNING")))
      (begin
	(sqlite3:execute 
	 db
	 "UPDATE tests 
             SET fail_count=(SELECT count(id) FROM tests WHERE run_id=? AND testname=? AND item_path != '' AND status='FAIL'),
                 pass_count=(SELECT count(id) FROM tests WHERE run_id=? AND testname=? AND item_path != '' AND (status='PASS' OR status='WARN' OR status='WAIVED'))
             WHERE run_id=? AND testname=? AND item_path='';"
	 run-id test-name run-id test-name run-id test-name)
        ;; (thread-sleep! 0.1) ;; give other processes a chance here, no, better to be done ASAP?
	(if (equal? status "RUNNING") ;; running takes priority over all other states, force the test state to RUNNING
	    (sqlite3:execute db "UPDATE tests SET state=? WHERE run_id=? AND testname=? AND item_path='';" "RUNNING" run-id test-name)
	    (sqlite3:execute
	     db
	     "UPDATE tests
                       SET state=CASE 
                       SET state=CASE WHEN (SELECT count(id) FROM tests WHERE run_id=? AND testname=? AND item_path != '' AND state in ('RUNNING','NOT_STARTED')) > 0 THEN 
                          'RUNNING'
                       ELSE 'COMPLETED' END,
                          status=CASE WHEN fail_count > 0 THEN 'FAIL' WHEN pass_count > 0 AND fail_count=0 THEN 'PASS' ELSE 'UNKNOWN' END
                                   WHEN (SELECT count(id) FROM tests 
                                                WHERE run_id=? AND testname=?
                                                     AND item_path != '' 
                                                     AND state in ('RUNNING','NOT_STARTED')) > 0 THEN 'RUNNING'
                                   ELSE 'COMPLETED' END,
                                      status=CASE 
                                            WHEN fail_count > 0 THEN 'FAIL' 
                                            WHEN pass_count > 0 AND fail_count=0 THEN 'PASS' 
                                            ELSE 'UNKNOWN' END
                       WHERE run_id=? AND testname=? AND item_path='';"
	     run-id test-name run-id test-name))
	#f)
      #f))

;;======================================================================
;; Tests meta data
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	   tdb 
	   "SELECT (SELECT count(id) FROM test_data WHERE test_id=? AND status like 'fail') AS fail_count,
                   (SELECT count(id) FROM test_data WHERE test_id=? AND status like 'pass') AS pass_count;"
	   test-id test-id)
	  (sqlite3:finalize! tdb)

	  ;; Now rollup the counts to the central megatest.db
	  (rdb:pass-fail-counts test-id fail-count pass-count)
	  (cdb:pass-fail-counts *runremote* test-id fail-count pass-count)
	  ;; (sqlite3:execute db "UPDATE tests SET fail_count=?,pass_count=? WHERE id=?;" 
	  ;;                     fail-count pass-count test-id)

	  (thread-sleep! 10) ;; play nice with the queue by ensuring the rollup is at least 10s later than the set
	  (cdb:flush-queue *runremote*)
	  ;; (thread-sleep! 1) ;; play nice with the queue by ensuring the rollup is at least 10ms later than the set
	  
	  ;; if the test is not FAIL then set status based on the fail and pass counts.
	  (rdb:test-rollup-test_data-pass-fail test-id)
	  (cdb:test-rollup-test_data-pass-fail *runremote* test-id)
	  ;; (sqlite3:execute
	  ;;  db   ;;; NOTE: Should this be WARN,FAIL? A WARN is not a FAIL????? BUG FIXME
	  ;;  "UPDATE tests
          ;;             SET status=CASE WHEN (SELECT fail_count FROM tests WHERE id=?) > 0 
          ;;                THEN 'FAIL'
          ;;             WHEN (SELECT pass_count FROM tests WHERE id=?) > 0 AND 
          ;;                  (SELECT status FROM tests WHERE id=?) NOT IN ('WARN','FAIL')
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	   (debug:print 6 "record(after)  = " record 
			"\nid:       " (db:step-get-id step)
			"\nstepname: " (db:step-get-stepname step)
			"\nstate:    " (db:step-get-state step)
			"\nstatus:   " (db:step-get-status step)
			"\ntime:     " (db:step-get-event_time step))))
       ;; (else   (vector-set! record 1 (db:step-get-event_time step)))
       (sort steps (lambda (a b)
		     (cond
		      ((<   (db:step-get-event_time a)(db:step-get-event_time b)) #t)
       (sort steps (lambda (a b)(< (db:step-get-event_time a)(db:step-get-event_time b)))))
		      ((eq? (db:step-get-event_time a)(db:step-get-event_time b)) 
		       (<   (db:step-get-id a)        (db:step-get-id b)))
		      (else #f)))))
      res)))

;;======================================================================
;; M I S C   M A N A G E M E N T   I T E M S 
;;======================================================================

;; the new prereqs calculation, looks also at itempath if specified
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      '()
      (let* ((unmet-pre-reqs '())
	     (result         '()))
	(for-each 
	 (lambda (waitontest-name)
	   ;; by getting the tests with matching name we are looking only at the matching test 
	   ;; and related sub items
	   (let ((tests             (db:get-tests-for-run db run-id waitontest-name #f '() '()))
	   (let ((tests             (db:get-tests-for-run db run-id waitontest-name '() '()))
		 (ever-seen         #f)
		 (parent-waiton-met #f)
		 (item-waiton-met   #f))
	     (for-each 
	      (lambda (test)
		;; (if (equal? waitontest-name (db:test-get-testname test)) ;; by defintion this had better be true ...
		(let* ((state             (db:test-get-state test))
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		 (set! result (append (if (null? tests)(list waitontest-name) tests) result)))))
	 waitons)
	(delete-duplicates result))))

(define (db:teststep-set-status! db test-id teststep-name state-in status-in comment logfile)
  (debug:print 4 "test-id: " test-id " teststep-name: " teststep-name)
  (let* ((tdb       (db:open-test-db-by-test-id db test-id))
	 (state     (check-valid-items "state" state-in))
	 (status    (check-valid-items "status" status-in)))
	 (state     (items:check-valid-items "state" state-in))
	 (status    (items:check-valid-items "status" status-in)))
    (if (or (not state)(not status))
	(debug:print 0 "WARNING: Invalid " (if status "status" "state")
	(debug:print 3 "WARNING: Invalid " (if status "status" "state")
		     " value \"" (if status state-in status-in) "\", update your validvalues section in megatest.config"))
    (if tdb
	(begin
	  (sqlite3:execute 
	   tdb
	   "INSERT OR REPLACE into test_steps (test_id,stepname,state,status,event_time,comment,logfile) VALUES(?,?,?,?,?,?,?);"
	   test-id teststep-name state-in status-in (current-seconds) (if comment comment "") (if logfile logfile ""))
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												 (string-intersperse keyvals "/")
												 "/" runname "/" testname "/"
												 (if (string=? item-path "") "" (conc "/" item-path))
												 final-log)))
									      ;; for now throw away newpath and use the log-fpath conc'd with pathmod
									      (set! newpath (conc pathmod log-fpath))
									      (if windows (string-translate newpath "/" "\\") newpath))
									    (if (> *verbosity* 1)
									    (if (debug:debug-mode 1)
										(conc final-log " not-found")
										"")))
					  (vector->list vb))
					b)))))
	   db
	   mainqry
	   runspatt (map cadr keypatt-alist))
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	   (debug:print 0 "WARNING: path given, " outputfile " is relative, prefixing with current directory")
	   (conc (current-directory) "/" outputfile)))
     results)
    ;; brutal clean up
    (system "rm -rf tempdir")))

;; (db:extract-ods-file db "outputfile.ods" '(("sysname" "%")("fsname" "%")("datapath" "%")) "%")


;;======================================================================
;; REMOTE DB ACCESS VIA RPC
;;======================================================================

(define (rdb:open-run-close procname . remargs)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	(apply (rpc:procedure 'rdb:open-run-close host port) procname remargs))
      (apply open-run-close (eval procname) remargs)))

(define (rdb:test-set-status-state test-id status state msg)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	(handle-exceptions
	 exn
	 (begin
	   (debug:print 0 "EXCEPTION: rpc call failed?")
	   (debug:print 0 "  " ((condition-property-accessor 'exn 'message) exn))
	   (print-call-chain)
	   (cdb:test-set-status-state test-id status state msg))
	 ((rpc:procedure 'cdb:test-set-status-state host port) test-id status state msg)))
      (cdb:test-set-status-state test-id status state msg)))

(define (rdb:test-rollup-test_data-pass-fail test-id)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	((rpc:procedure 'cdb:test-rollup-test_data-pass-fail host port) test-id))
      (cdb:test-rollup-test_data-pass-fail test-id)))

(define (rdb:pass-fail-counts test-id fail-count pass-count)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	((rpc:procedure 'cdb:pass-fail-counts host port) test-id fail-count pass-count))
      (cdb:pass-fail-counts test-id fail-count pass-count)))

;; currently forces a flush of the queue
(define (rdb:tests-register-test db run-id test-name item-path)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	((rpc:procedure 'cdb:tests-register-test host port) db run-id test-name item-path force-write: #t))
      (cdb:tests-register-test db run-id test-name item-path force-write: #t)))

(define (rdb:flush-queue)
  (if *runremote*
      (let ((host (vector-ref *runremote* 0))
	    (port (vector-ref *runremote* 1)))
	((rpc:procedure 'cdb:flush-queue host port)))
      (cdb:flush-queue)))