Megatest

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(declare (unit dbmod))
(declare (uses commonmod))

(module dbmod
	*
	
(import scheme chicken data-structures extras)
(import (prefix sqlite3 sqlite3:) posix typed-records srfi-18 srfi-69 format ports srfi-1 matchable)
(import commonmod)
;; (use (prefix ulex ulex:))

(include "common_records.scm")

;; ;; legacy handling of structure for managing db's. Refactor this into dbr:?
(define (db:dbdat-get-db dbdat)
  (if (pair? dbdat)
      (car dbdat)
      dbdat))

























































































































































































































































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(declare (unit dbmod))
(declare (uses commonmod))

(module dbmod
	*
	
(import scheme chicken data-structures extras)
(import (prefix sqlite3 sqlite3:) posix typed-records srfi-18 srfi-69 format ports srfi-1 matchable stack)
(import commonmod)
;; (use (prefix ulex ulex:))

(include "common_records.scm")

;; ;; legacy handling of structure for managing db's. Refactor this into dbr:?
(define (db:dbdat-get-db dbdat)
  (if (pair? dbdat)
      (car dbdat)
      dbdat))

;; Make the dbstruct, setup up auxillary db's and call for main db at least once
;;
;; called in http-transport and replicated in rmt.scm for *local* access. 
;;
(define (db:setup do-sync alldat #!key (areapath #f))
  (let* ((log-port (alldat-log-port alldat)))
    (cond
     ((alldat-dbstack alldat) alldat) ;; already initialized
     ((not (alldat-areapath alldat))  ;; no top path yet? Just exit
      (debug:print-info 13 log-port "in db:setup, area-path not set; give up and exit.")
      (exit 1))
     (else ;;(common:on-homehost?)
      (debug:print-info 13 log-port "db:setup entered (first time, not cached.)")
      (debug:print-info 13 log-port "Begin db:open-db")
      (db:open-db alldat areapath: areapath do-sync: do-sync)
      (debug:print-info 13 log-port "Done db:open-db")
      ;; (set! *dbstruct-db* dbstruct)
      alldat))))

;; This routine creates the db if not already present. It is only called if the db is not already opened
;;
(define (db:open-db alldat #!key (areapath #f)(do-sync #t)) ;; TODO: actually use areapath
  (let ((tmpdb-stack (alldat-dbstack alldat))) ;; RA => Returns the first reference in alldat
    (if (stack? tmpdb-stack)
	(db:get-db tmpdb-stack) ;; get previously opened db (will create new db handle if all in the stack are already used
        (let* ((max-stale-tmp (configf:lookup-number *configdat* "server" "filling-db-max-stale-seconds" default: 10))
               (dbpath       (common:get-db-tmp-area alldat))      ;; path to tmp db area
               (dbexists     (common:file-exists? dbpath))
	       (tmpdbfname   (conc dbpath "/megatest.db"))
	       (dbfexists    (common:file-exists? tmpdbfname))  ;; (conc dbpath "/megatest.db")))
               (mtdbexists   (common:file-exists? (conc *toppath* "/megatest.db")))
							 
               (mtdbmodtime  (if mtdbexists (common:lazy-sqlite-db-modification-time (conc *toppath* "/megatest.db"))   #f))
	        		 (tmpdbmodtime (if dbfexists  (common:lazy-sqlite-db-modification-time tmpdbfname) #f)) 
               (mtdb         (db:open-megatest-db))
               (mtdbpath     (db:dbdat-get-path mtdb))
               (tmpdb        (db:open-megatest-db path: dbpath)) ;; lock-create-open dbpath db:initialize-main-db))
               (refndb       (db:open-megatest-db path: dbpath name: "megatest_ref.db"))
               (write-access (file-write-access? mtdbpath))
	       
	       ;;(mtdbmodtime (if mtdbexists
	       ;;(common:lazy-sqlite-db-modification-time mtdbpath)
	       ;;#f)) ; moving this before db:open-megatest-db is
	       ;;called. if wal mode is on -WAL and -shm file get
	       ;;created with causing the tmpdbmodtime timestamp
	       ;;always greater than mtdbmodtime (tmpdbmodtime (if
	       ;;dbfexists (common:lazy-sqlite-db-modification-time
	       ;;tmpdbfname) #f))

	       ;;if wal mode is on -WAL and -shm file get created when
	       ;;db:open-megatest-db is called. modtimedelta will
	       ;;always be < 10 so db in tmp not get synced
	       ;;(tmpdbmodtime (if dbfexists (db:get-last-update-time
	       ;;(car tmpdb)) #f)) (fmt (file-modification-time
	       ;;tmpdbfname))
	       
	       (modtimedelta (and mtdbmodtime tmpdbmodtime (- mtdbmodtime tmpdbmodtime))))

	  (handle-exceptions
	   exn
	   (let ((call-chain (get-call-chain))
		 (msg        ((condition-property-accessor 'exn 'message) exn)))
	     (debug:print 0 log-port "ERROR: attempted to drop triggers on MTRA/megatest.db but failed. Error is " msg)
	     (set! write-access #f)) ;; if we failed to drop the triggers then we probably don't have write access
	   (when write-access
		 (sqlite3:execute (car mtdb) "drop trigger if exists update_tests_trigger")
		 (sqlite3:execute (car mtdb) "drop trigger if exists update_runs_trigger")))
          
          ;;(print "mtdbmodtime " mtdbmodtime " tmpdbmodtime "
          ;;tmpdbmodtime " mtdbpath " mtdbpath " " (conc *toppath*
          ;;"/megatest.db")) (debug:print-info 13 log-port
          ;;"db:open-db>> mtdbpath="mtdbpath" mtdbexists="mtdbexists"
          ;;and write-access="write-access)
          (if (and dbexists (not write-access))
              (begin
                (set! *db-write-access* #f)
                (alldat-read-only-set! alldat #t)))
          (alldat-mtdb-set!   alldat mtdb)
          (alldat-tmpdb-set!  alldat tmpdb)
          (alldat-dbstack-set! alldat (make-stack))   ;; why a stack?
          (stack-push! (alldat-dbstack alldat) tmpdb) ;; olddb is already a (cons db path)
          (alldat-refndb-set! alldat refndb)
          ;;	    (mutex-unlock! *rundb-mutex*)
          (if (and  (or (not dbfexists)
			(and modtimedelta
			     (> modtimedelta max-stale-tmp))) ;; if db in tmp is over ten seconds older than the file in MTRA then do a sync back
		    do-sync)
	      (begin
		(debug:print 1 log-port "filling db " (db:dbdat-get-path tmpdb) " with data \n    from " (db:dbdat-get-path mtdb) " mod time delta: " modtimedelta)
		(db:sync-tables (db:sync-all-tables-list alldat) #f mtdb refndb tmpdb)
					;touch tmp db to avoid wal mode wierdness  
		(set! (file-modification-time tmpdbfname) (current-seconds))  
                (debug:print-info 13 log-port "db:sync-all-tables-list done.")
                )
	      (debug:print 4 log-port " db, " (db:dbdat-get-path tmpdb) " already exists or fresh enough, not propogating data from\n     " (db:dbdat-get-path mtdb) " mod time delta: " modtimedelta) )
	  ;; (db:multi-db-sync alldat 'old2new))  ;; migrate data from megatest.db automatically
          tmpdb))))

;; Get/open a database
;;    if run-id => get run specific db
;;    if #f     => get main db
;;    if db already open - return inmem
;;    if db not open, open inmem, rundb and sync then return inmem
;;    inuse gets set automatically for rundb's
;;
(define (db:get-db alldat) ;;  run-id) 
  (if (stack? (alldat-dbstack alldat))
      (if (stack-empty? (alldat-dbstack alldat))
          (let ((newdb (db:open-megatest-db path: (common:get-db-tmp-area alldat))))
            ;; (stack-push! (alldat-dbstack alldat) newdb)
            newdb)
          (stack-pop! (alldat-dbstack alldat)))
      (db:open-db alldat)))

(define (db:sync-all-tables-list alldat)
  (append (db:sync-main-list alldat)
	  db:sync-tests-only))

;; just tests, test_steps and test_data tables
(define db:sync-tests-only
  (list
   ;; (list "strs"
   ;;       '("id"             #f)
   ;;       '("str"            #f))
   (list "tests" 
	 '("id"             #f)
	 '("run_id"         #f)
	 '("testname"       #f)
	 '("host"           #f)
	 '("cpuload"        #f)
	 '("diskfree"       #f)
	 '("uname"          #f)
	 '("rundir"         #f)
	 '("shortdir"       #f)
	 '("item_path"      #f)
	 '("state"          #f)
	 '("status"         #f)
	 '("attemptnum"     #f)
	 '("final_logf"     #f)
	 '("logdat"         #f)
	 '("run_duration"   #f)
	 '("comment"        #f)
	 '("event_time"     #f)
	 '("fail_count"     #f)
	 '("pass_count"     #f)
	 '("archived"       #f)
         '("last_update"    #f))
  (list "test_steps"
	 '("id"             #f)
	 '("test_id"        #f)
	 '("stepname"       #f)
	 '("state"          #f)
	 '("status"         #f)
	 '("event_time"     #f)
	 '("comment"        #f)
	 '("logfile"        #f)
         '("last_update"    #f))
   (list "test_data"
	 '("id"             #f)
	 '("test_id"        #f)
	 '("category"       #f)
	 '("variable"       #f)
	 '("value"          #f)
	 '("expected"       #f)
	 '("tol"            #f)
	 '("units"          #f)
	 '("comment"        #f)
	 '("status"         #f)
	 '("type"           #f)
         '("last_update"    #f))))

;; needs db to get keys, this is for syncing all tables
;;
(define (db:sync-main-list alldat)
  (let ((keys  (db:get-keys alldat)))
    (list
     (list "keys"
	   '("id"        #f)
	   '("fieldname" #f)
	   '("fieldtype" #f))
     (list "metadat" '("var" #f) '("val" #f))
     (append (list "runs" 
		   '("id"  #f))
	     (map (lambda (k)(list k #f))
		  (append keys
			  (list "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count" "contour" "last_update"))))
     (list "test_meta"
	   '("id"             #f)
	   '("testname"       #f)
	   '("owner"          #f)
	   '("description"    #f)
	   '("reviewed"       #f)
	   '("iterated"       #f)
	   '("avg_runtime"    #f)
	   '("avg_disk"       #f)
	   '("tags"           #f)
	   '("jobgroup"       #f)))))

;; why get the keys from the db? why not get from the *configdat*
;; using keys:config-get-fields?

(define (db:get-keys alldat)
  (if *db-keys* *db-keys* 
      (let ((res '()))
	(db:with-db alldat #f #f
		    (lambda (db)
		      (sqlite3:for-each-row 
		       (lambda (key)
			 (set! res (cons key res)))
		       db
		       "SELECT fieldname FROM keys ORDER BY id DESC;")))
	(set! *db-keys* res)
	res)))

;; (db:with-db alldat 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
;;
(define (db:with-db alldat run-id r/w proc . params)
  (let* ((have-struct      (alldat? alldat))
         (dbdat            (if have-struct 
		           	  (db:get-db alldat)
		           	  #f))
	 (db               (if have-struct
		           	  (db:dbdat-get-db dbdat)
		           	  alldat))
	 (use-mutex        (> (alldat-api-process-request-count alldat) 25))
	 (db-with-db-mutex (alldat-db-with-db-mutex alldat))
	 (log-port         (alldat-log-port alldat)))
    (if (and use-mutex
	     (common:low-noise-print 120 "over-50-parallel-api-requests"))
	(debug:print-info 0 log-port (alldat-api-process-request-count alldat) " parallel api requests being processed in process " (current-process-id) ", throttling access"))
    (if (common:low-noise-print 600 (conc "parallel-api-requests" (alldat-max-api-process-requests alldat)))
	(debug:print-info 2 log-port "Parallel api request count: " (alldat-api-process-request-count alldat) " max parallel requests: " (alldat-max-api-process-requests alldat)))
    (handle-exceptions
     exn
     (begin
       (print-call-chain (current-error-port))
       (debug:print-error 0 log-port "sqlite3 issue in db:with-db, alldat=" alldat ", run-id=" run-id ", proc=" proc ", params=" params " error: " ((condition-property-accessor 'exn 'message) exn))
       ;; there is no recovering at this time. exit
       (exit 50))
     (if use-mutex (mutex-lock! db-with-db-mutex))
     (let ((res (apply proc db params)))
       (if use-mutex (mutex-unlock! db-with-db-mutex))
       (if dbdat (stack-push! (alldat-dbstack alldat) dbdat))
       res))))



)