Megatest

;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.
;;
;;======================================================================

(declare (unit api))
(declare (uses db))
(declare (uses debugprint))
(declare (uses commonmod))
(declare (uses dbmod))
(declare (uses dbfile))
(declare (uses tasks))
(declare (uses tcp-transportmod))

(import commonmod)
(import dbmod)
(import dbfile)
(import debugprint)
(import tcp-transportmod)

(use srfi-69
     posix

(include "key_records.scm")
(include "run_records.scm")

(define *number-of-writes* 0)
(define *number-non-write-queries* 0)

(import debugprint)
(import dbfile)
(import dbmod)
(import rmtmod)

;; record for keeping state,status and count for doing roll-ups in
;; iterated tests
;;
(defstruct dbr:counts
  (state #f)
  (status #f)
  (count  0)) 


;; (define (db:with-db dbstruct run-id r/w proc . params)
;;   (case (rmt:transport-mode)
;;     ((http)(dbfile:with-db dbstruct run-id r/w proc params))
;;     ((tcp) (dbmod:with-db dbstruct run-id r/w proc params))
;;     ((nfs) (dbmod:with-db dbstruct run-id r/w proc params))
;;     (else (assert #f "FATAL: db:with-db called with non-existant transport mode"))))

;;======================================================================
;; hash of hashs
;;======================================================================


(define (db:hoh-set! dat key1 key2 val)

        (with-input-from-file infile read-lines)
	)))

;;  select end_time-now from
;;      (select testname,item_path,event_time+run_duration as
;;                          end_time,strftime('%s','now') as now from tests where state in
;;      ('RUNNING','REMOTEHOSTSTART','LAUNCHED'));
;;
;; NOT EASY TO MIGRATE TO db{file,mod}
;;
(define (db:find-and-mark-incomplete dbstruct run-id ovr-deadtime)
  (let* ((incompleted '())
	 (oldlaunched '())
	 (toplevels   '())
          ;; The default running-deadtime is 720 seconds = 12 minutes.
          ;; "(running-deadtime-default (+ server-start-allowance (* 2 launch-monitor-period)))" = 200 + (2 * (200 + 30 + 30))
         (deadtime-trim (or ovr-deadtime (configf:lookup-number *configdat* "setup" "deadtime")))

    (map sqlite3:finalize! statements)
    (sqlite3:finalize! count-stmt)
    ;; (db:find-and-mark-incomplete db)
    ;; (db:delay-if-busy dbdat)
    (sqlite3:execute db "VACUUM;")
    dead-runs))





























































;;======================================================================
;; 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))

(define (db:get-header vec)(vector-ref vec 0))
(define (db:get-rows   vec)(vector-ref vec 1))

;;======================================================================
;;  R U N S
;;======================================================================





(define (db:get-run-times dbstruct run-patt target-patt)
(let ((res `())
      (qry 	(conc "select runname, (max(end_time)-min(event_time))/60 as runtime, target from (select runname, run_id,tests.event_time,tests.event_time+run_duration AS end_time, " (string-join (db:get-keys dbstruct) " || '/' || ") " as target from tests inner join runs on tests.run_id = runs.id where runs.runname like ? and target like ?) group by run_id ;")))
					;(print qry)
  (db:with-db 
   dbstruct
   #f ;; this is for the main runs db
   #f ;; does not modify db
   (lambda (dbdat db)
     (sqlite3:for-each-row
      (lambda (runname runtime target )
	(set! res (cons (vector runname runtime target) res)))
      db
      qry 
      run-patt target-patt)

     res))))



(define (db:get-run-name-from-id dbstruct run-id)
  (db:with-db 
   dbstruct
   #f ;; this is for the main runs db
   #f ;; does not modify db
   (lambda (dbdat db)

	      (loop (+ count 1))))))
    (with-output-to-file crumbn
      (lambda ()
	(print fname" run-id="run-id" params="params)
	))
    crumbn))

;; ;; (db:with-db dbstruct run-id sqlite3:exec "select blah fgrom blaz;")
;; ;; r/w is a flag to indicate if the db is modified by this query #t = yes, #f = no
;; ;;
;; ;; Used only with http - to be removed
;; ;;
;; (define (dbfile:with-db dbstruct run-id r/w proc params)
;;   (assert dbstruct "FATAL: db:with-db called with dbstruct "#f)
;;   (assert (dbr:dbstruct? dbstruct) "FATAL: dbstruct is "dbstruct)
;;   ;; Testing 2023, March 14th. I went from full time use of the mutext to no use at all and
;;   ;; didn't see much change in the frequency of the messages:
;;   ;; Warning (#<thread: thread14974>): in thread: (bind!) bad parameter or other API misuse
;;   ;; allowing request count to go up to 1000 and other crashes showed up:
;;   ;; Warning (#<thread: thread1889>): in thread: (deserialize) unexpected end of input: #<input port "(tcp)">
;;   ;;
;;   ;; leave it fully on for now, test later if there is a performance issue
;;   ;;
;;   (let* ((use-mutex   #t) ;;(> *api-process-request-count* 50)) ;; risk of db corruption
;; 	 (have-struct (dbr:dbstruct? dbstruct))
;;          (dbdat       (if have-struct                ;; this stuff just allows us to call with a db handle directly
;; 			  (db:open-db dbstruct run-id (dbfile:db-init-proc)) ;; (dbfile:get-subdb dbstruct run-id)
;; 			  #f))
;; 	 (db          (if have-struct                ;; this stuff just allows us to call with a db handle directly
;; 			  (dbr:dbdat-dbh dbdat)
;; 			  dbstruct))
;; 	 (fname       (if dbdat
;; 			  (dbr:dbdat-dbfile dbdat)
;; 			  "nofilenameavailable"))
;; 	 (jfile       (conc fname"-journal"))
;; 	 (qryproc     (lambda ()
;; 			(if use-mutex (mutex-lock! *db-with-db-mutex*))
;; 			(let ((res (apply proc dbdat db params))) ;; the actual call is here.
;; 			  (if use-mutex (mutex-unlock! *db-with-db-mutex*))
;; 			  ;; (if (vector? dbstruct)(db:done-with dbstruct run-id r/w))
;; 			  (if dbdat
;; 			      (dbfile:add-dbdat dbstruct run-id dbdat))
;; 			  ;; (delete-file* crumbfile)
;; 			  res)))
;; 	 (stop-train  (conc (dbr:dbstruct-areapath dbstruct)"/stop-the-train")))
;; 
;;     (assert (sqlite3:database? db) "FATAL: db:with-db, db is not a database, db="db
;; 	    ", fname="fname)
;;     (if (file-exists? jfile)
;; 	(begin
;; 	  (dbfile:print-err "INFO: "jfile" exists, delaying to reduce database load")
;; 	  (thread-sleep! 0.2)))
;;     (if (and use-mutex
;; 	     (common:low-noise-print 120 "over-50-parallel-api-requests"))
;; 	(dbfile:print-err *api-process-request-count*
;; 			  " parallel api requests being processed in process "
;; 			  (current-process-id))) ;;  ", throttling access"))
;;     (case (no-condition-db-with-db)
;;       ((production)(qryproc))
;;       ((suicide-mode)
;;        (handle-exceptions
;; 	exn
;; 	(with-output-to-file stop-train
;; 	  (lambda ()
;; 	    (db:generic-error-printout exn "Stop train mode, run-id: "run-id
;; 				       " params: "params" proc: "proc)))
;; 	(qryproc)))
;;       (else
;;        (condition-case
;; 	(qryproc)
;; 	(exn (io-error)
;; 	     (db:generic-error-printout exn "ERROR: i/o error with "fname
;; 					". Check permissions, disk space etc. and try again."))
;; 	(exn (corrupt)
;; 	     (db:generic-error-printout exn "ERROR: database "fname
;; 					" is corrupt. Repair it to proceed."))
;; 	(exn (busy)
;; 	     (db:generic-error-printout exn "ERROR: database "fname
;; 					" is locked. Try copying to another location,"
;; 					" remove original and copy back."))
;; 	(exn (permission)(db:generic-error-printout exn "ERROR: database "fname
;; 						    " has some permissions problem."))
;; 	(exn ()
;; 	     (db:generic-error-printout exn "ERROR: Unknown error with database "fname
;; 					" message: "
;; 					((condition-property-accessor 'exn 'message) exn))))))))

;;======================================================================
;; another attempt at a transactionized queue
;;======================================================================

;; ;; ;; (define *transaction-queues* (make-hash-table))
;; ;; ;; 

	  newdbstruct))))

;;======================================================================
;; The inmem one-db file per server method goes in here
;;======================================================================

(define (dbmod:with-db dbstruct run-id r/w proc params)
  (let* ((use-mutex (> *api-process-request-count* 15))
	 (dbdat     (dbmod:open-db dbstruct run-id (dbfile:db-init-proc)))
	 (dbh       (dbr:dbdat-dbh dbdat)) ;; this will be the inmem handle
	 (dbfile    (dbr:dbdat-dbfile dbdat)))
    ;; if nfs mode do a sync if delta > 2
    (let* ((last-update (dbr:dbstruct-last-update dbstruct))
	   (sync-proc   (dbr:dbstruct-sync-proc dbstruct))
	   (curr-secs   (current-seconds)))
      (if (> (- curr-secs last-update) 3)
	  (begin
	    (sync-proc last-update)
	    (dbr:dbstruct-last-update-set! dbstruct curr-secs))))
    (if use-mutex (mutex-lock! *db-with-db-mutex*))
    (let* ((res (apply proc dbdat dbh params)))
      (if use-mutex (mutex-unlock! *db-with-db-mutex*))
      res)))

(define (db:with-db dbstruct run-id r/w proc . params)
  (dbmod:with-db dbstruct run-id r/w proc params))

(define (dbmod:open-inmem-db init-proc #!optional (dbfullname #f))
  (let* ((db      (if dbfullname
		      (dbmod:safely-open-db dbfullname init-proc #t)
		      (sqlite3:open-database ":memory:")))
	 (handler (sqlite3:make-busy-timeout 3600)))
    (sqlite3:set-busy-handler! db handler)
    (init-proc db)
    db))

(define (dbmod:open-db dbstruct run-id dbinit)
  (or (dbr:dbstruct-dbdat dbstruct)
      (let* ((dbdat (make-dbr:dbdat
		     dbfile: (dbr:dbstruct-dbfile dbstruct)
		     dbh:    (dbr:dbstruct-inmem  dbstruct)

	 (else
	  (debug:print 0 *default-log-port* "Unknown dbfile:sync-method setting: "
		       (dbfile:sync-method)))))
      (else
       (debug:print 0 *default-log-port* "Unknown dbfile:cache-method setting: "
		    (dbfile:cache-method))
       #f)))

(define (dbmod:safely-open-db dbfullname init-proc write-access)
  (dbfile:with-simple-file-lock
   (conc dbfullname".lock")
   (lambda ()
     (let* ((db      (sqlite3:open-database dbfullname))
	    (handler (sqlite3:make-busy-timeout 136000)))
       (sqlite3:set-busy-handler! db handler)
       (if write-access
	   (init-proc db))
       db))))

;; Open the inmem db and the on-disk db
;; populate the inmem db with data
;;
;; Updates fields in dbstruct
;; Returns dbstruct
;;
;; * This routine creates the db if not found
;; * Probably can get rid of the dbstruct-in
;; 
(define (dbmod:open-dbmoddb areapath run-id dbfname-in init-proc keys
			    #!key (dbstruct-in #f)
			    (syncdir 'todisk))
  (let* ((dbstruct     (or dbstruct-in (make-dbr:dbstruct areapath: areapath)))
	 (dbfname      (or dbfname-in (dbmod:run-id->dbfname run-id)))
	 (dbpath       (dbmod:get-dbdir dbstruct))             ;; directory where all the .db files are kept
	 (dbfullname   (conc dbpath"/"dbfname)) ;; (dbmod:run-id->full-dbfname dbstruct run-id))
	 (dbexists     (file-exists? dbfullname))
	 (inmem        (dbmod:open-inmem-db init-proc
					    ;; (conc "/tmp/"dbfname) ;; will create /tmp file
					    ))
	 (write-access (file-write-access? dbpath))
	 (db           (dbmod:safely-open-db dbfullname init-proc write-access))








	 (tables       (db:sync-all-tables-list keys)))
    (assert (sqlite3:database? inmem) "FATAL: open-dbmoddb: inmem is not a db")
    (assert (sqlite3:database? db) "FATAL:  open-dbmoddb: db is not a db")
    (dbr:dbstruct-inmem-set!     dbstruct inmem)
    (dbr:dbstruct-ondiskdb-set!  dbstruct db)
    (dbr:dbstruct-dbfile-set!    dbstruct dbfullname)
    (dbr:dbstruct-dbfname-set!   dbstruct dbfname)

		       (loop (file-exists? fullpath)
			     (- count 1)))
		     (begin
		       (debug:print 0 *default-log-port* "ERROR: removing the journal file " fullpath ", this is not good. Look for disk full, write access and other issues.")
		       (if remove (system (conc "rm -rf " fullpath)))
		       #f)))
	       #t))))))


;;======================================================================
;; M E T A   G E T   A N D   S E T   V A R S
;;======================================================================

;; returns number if string->number is successful, string otherwise
;; also updates *global-delta*
;;
(define (db:get-var dbstruct var)
  (let* ((res      #f))
    (db:with-db
     dbstruct #f #f  ;; for the moment vars are only stored in main.db
     (lambda (dbdat db)
       (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))))
       res))))

(define (db:inc-var dbstruct var)
  (db:with-db dbstruct #f #t 
	      (lambda (dbdat db)
		(sqlite3:execute db "UPDATE metadat SET val=val+1 WHERE var=?;" var))))

(define (db:dec-var dbstruct var)
  (db:with-db dbstruct #f #t 
	      (lambda (dbdat db)
		(sqlite3:execute db "UPDATE metadat SET val=val-1 WHERE var=?;" var))))

;; This was part of db:get-var. It was used to estimate the load on
;; the database files.
;;
;; 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-info 4 *default-log-port* "launch throttle factor=" *global-delta*)
;; 	  (set! *last-global-delta-printed* *global-delta*)))

(define (db:set-var dbstruct var val)
  (db:with-db dbstruct #f #t 
	      (lambda (dbdat db)
		(sqlite3:execute  (db:get-cache-stmth dbdat db "INSERT OR REPLACE INTO metadat (var,val) VALUES (?,?);")
				  var val))))

(define (db:add-var dbstruct var val)
  (db:with-db dbstruct #f #t 
	      (lambda (dbdat db)
		(sqlite3:execute  (db:get-cache-stmth dbdat db "UPDATE metadat SET val=val+? WHERE var=?;") val var))))

(define (db:del-var dbstruct var)
  (db:with-db dbstruct #f #t 
	      (lambda (dbdat db)
		(sqlite3:execute  (db:get-cache-stmth dbdat db "DELETE FROM metadat WHERE var=?;") var))))



)

;;  strftime('%m/%d/%Y %H:%M:%S','now','localtime')

(declare (unit tasks))
(declare (uses debugprint))
(declare (uses dbfile))
(declare (uses db))
(declare (uses dbmod))
(declare (uses rmt))
(declare (uses rmtmod))
(declare (uses common))
(declare (uses pgdb))
(declare (uses commonmod))
(declare (uses mtargs))

(use sqlite3 srfi-1 posix regex regex-case srfi-69 dot-locking format)
(import (prefix sqlite3 sqlite3:))

(import commonmod
	debugprint
	dbmod
	rmtmod
	(prefix mtargs args:))

(import dbfile)
;; (import pgdb) ;; pgdb is a module

(include "task_records.scm")