Megatest

;; dbstruct vector containing all the relevant dbs like main.db, megatest.db, run.db etc

(use (srfi 18) extras tcp stack) ;; RADT => use of require-extension?
(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64 format dot-locking z3 typed-records)
(import (prefix sqlite3 sqlite3:))
(import (prefix base64 base64:)) ;; RADT => prefix??
(include "/nfs/site/disks/icf_fdk_cw_gwa002/srehman/fossil/dbi/dbi.scm")
(import (prefix dbi dbi:))

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

;; I propose this record evolves into the area record
;;
(defstruct dbr:dbstruct 
  ;; (tmpdb       #f)
  (dbstack     #f) ;; stack for tmp db handles, do not initialize with a stack
  (mtdb        #f)
  (refndb      #f)
  (slave-dbs  '())
  (homehost    #f) ;; not used yet
  (on-homehost #f) ;; not used yet
  )                ;; goal is to converge on one struct for an area but for now it is too confusing
  

;; record for keeping state,status and count for doing roll-ups in
;; iterated tests

        (let* ((dbpath       (db:dbfile-path)) ;;  0))
               (dbexists     (file-exists? dbpath))
	       (dbfexists    (file-exists? (conc dbpath "/megatest.db")))
               (tmpdb        (db:open-megatest-db path: dbpath)) ;; lock-create-open dbpath db:initialize-main-db))
               (mtdb         (db:open-megatest-db))
               (refndb       (db:open-megatest-db path: dbpath name: "megatest_ref.db"))
               (write-access (file-write-access? dbpath)))

          (if (args:get-arg "-server")
            (if (configf:get-section *configdat* "ext-sync")
                (let* ((dblist (configf:get-section *configdat* "ext-sync"))
                      (res '())
                      (cfgdb #f))
                      (for-each (lambda (dbitem)
                            (let* ((stringsplit (string-split (cadr dbitem)))
                                  (dbtype (string->symbol (car stringsplit)))
                                  (dbpath (cadr stringsplit)))
                            (case dbtype
                              ((sqlite3) 
                                (set! cfgdb (dbi:open dbtype (cons (cons 'dbname dbpath) '()) ))
                                (db:initialize-main-db (dbi:db-conn cfgdb))
                                (db:initialize-run-id-db (dbi:db-conn cfgdb))
                                (set! res (cons (cons cfgdb dbpath) res)))
                              ((pg)
                                (let* ((dbinfo '()))
                                  (for-each 
                                    (lambda (x)
                                      (if (not (eqv? (string->symbol x) dbtype))
                                        (let* ((pair (string-split x ":")))
                                          (if (not (eqv? pair '()))
                                            (set! dbinfo (cons (cons (string->symbol (car pair)) (cadr pair)) dbinfo))))))
                                  stringsplit)
                                  (set! cfgdb (dbi:open dbtype dbinfo))
                                  (set! res (cons (cons cfgdb (alist-ref 'host dbinfo)) res))
                                  )))))
                      dblist)
                      (dbr:dbstruct-slave-dbs-set! dbstruct res)
                      )))
          
          (if (and dbexists (not write-access))
              (set! *db-write-access* #f))
          (dbr:dbstruct-mtdb-set!   dbstruct mtdb)
          (dbr:dbstruct-dbstack-set! dbstruct (make-stack))
          (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb) ;; olddb is already a (cons db path)
          (dbr:dbstruct-refndb-set! dbstruct refndb)

          ;;	    (mutex-unlock! *rundb-mutex*)
          (if (and (not dbfexists)
                   write-access) ;; *db-write-access*) ;; did not have a prior db and do have write access
	      (begin
		(debug:print 0 *default-log-port* "filling db " (db:dbdat-get-path tmpdb) " with data from " (db:dbdat-get-path mtdb))
		(db:sync-tables (db:sync-all-tables-list dbstruct) #f mtdb refndb tmpdb))
	      (debug:print 0 *default-log-port* " db, " (db:dbdat-get-path tmpdb) " already exists, not propogating data from " (db:dbdat-get-path mtdb)))

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

;; needs db to get keys, this is for syncing all tables
;;
(define (db:sync-main-list dbstruct)
  (let ((keys  (db:get-keys dbstruct)))
    (list
     (list "keys"
	   '("id"        "INTEGER" 'key)
	   '("fieldname" "TEXT")
	   '("fieldtype" "TEXT"))
     (list "metadat" 
       '("id"   "INTEGER" 'key)
       '("var"  "TEXT") 
       '("val"  "TEXT"))
     (list "runs" 
		   '("id"             "INTEGER" 'key)

       '("release"        "TEXT")
       '("iteration"      "TEXT")
       '("testsuite_mode" "TEXT")
       '("runname"        "TEXT")
       '("state"          "TEXT")
       '("status"         "TEXT")
       '("owner"          "TEXT")
       '("event_time"     "INTEGER")
       '("comment"        "TEXT")
       '("fail_count"     "INTEGER")
       '("pass_count"     "INTEGER"))

     (list "test_meta"
	   '("id"             "INTEGER" 'key)
	   '("testname"       "TEXT")
	   '("owner"          "TEXT")
	   '("description"    "TEXT")
	   '("reviewed"       "INTEGER")
	   '("iterated"       "TEXT")
	   '("avg_runtime"    "REAL")
	   '("avg_disk"       "REAL")
	   '("tags"           "TEXT")
	   '("jobgroup"       "TEXT")))))

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

;; use bunch of Unix commands to try to break the lock and recreate the db
;;

		      (if (member fname '("megatest.db" "monitor.db"))
			  "megatest -cleanup-db"
			  "megatest -import-megatest.db;megatest -cleanup-db")
		      "\"\n")
	 (exit) ;; we can not safely continue when a db was corrupted - even if fixed.
	 )
       ;; test read/write access to the database
       (let ((db (dbi:open 'sqlite3 (cons (cons ('dbname dbpath) '())))))
	 (cond
	  ((equal? fname "megatest.db")
	   (sqlite3:executeute db "DELETE FROM tests WHERE state='DELETED';"))
	  ((equal? fname "main.db")
	   (sqlite3:executeute db "DELETE FROM runs WHERE state='deleted';"))
	  ((string-match "\\d.db" fname)
	   (sqlite3:executeute db "UPDATE tests SET state='DELETED' WHERE state='DELETED';"))
	  ((equal? fname "monitor.db")
	   (sqlite3:executeute "DELETE FROM servers WHERE state LIKE 'defunct%';"))
	  (else
	   (sqlite3:executeute db "vacuum;")))
	 
	 (dbi:close db)
	 #t))))))
    
;; tbls is ( ("tablename" ( "field1" [#f|proc1] ) ( "field2" [#f|proc2] ) .... ) )
;; db's are dbdat's
;;
;; if last-update specified ("field-name" . time-in-seconds)
;;    then sync only records where field-name >= time-in-seconds
;;    IFF field-name exists
;;
(define (db:sync-tables tbls last-update fromdb todb . slave-dbs)
  (set! todb (cons (dbi:convert (db:dbdat-get-db todb)) (db:dbdat-get-path todb)))
  (set! fromdb (cons (dbi:convert (db:dbdat-get-db fromdb)) (db:dbdat-get-path fromdb)))

  (handle-exceptions
   exn
   (begin
     (debug:print 0 *default-log-port* "EXCEPTION: database probably overloaded or unreadable in db:sync-tables.")
     (print-call-chain (current-error-port))
     (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
     (print "exn=" (condition->list exn))

	       (cons todb slave-dbs))
     
     0)
   ;; this is the work to be done
   (cond
    ((not fromdb) (debug:print 3 *default-log-port* "WARNING: db:sync-tables called with fromdb missing") -1)
    ((not todb)   (debug:print 3 *default-log-port* "WARNING: db:sync-tables called with todb missing") -2)
    ((not (dbi:database? (db:dbdat-get-db fromdb)))
     (debug:print-error 0 *default-log-port* "db:sync-tables called with fromdb not a database " fromdb) -3)
    ((not (dbi:database? (db:dbdat-get-db todb)))
     (debug:print-error 0 *default-log-port* "db:sync-tables called with todb not a database " todb) -4)
    (else
     (let ((stmts       (make-hash-table)) ;; table-field => stmt
	   (all-stmts   '())              ;; ( ( stmt1 value1 ) ( stml2 value2 ))
	   (numrecs     (make-hash-table))
	   (start-time  (current-milliseconds))
	   (tot-count   0))

							  (conc " " (car last-update) ">=" (cdr last-update))
							  "")
				   ";"))
		 (full-ins   (conc "INSERT OR REPLACE INTO " tablename " ( " (string-intersperse (map car fields) ",") " ) "
				   " VALUES ( " (string-intersperse (make-list num-fields "?") ",") " );"))
		 (fromdat    '())
		 (fromdats   '())
     	 (tabletypes '())
		 (totrecords 0)
		 (batch-len  (string->number (or (configf:lookup *configdat* "sync" "batchsize") "10")))
		 (todat      (make-hash-table))
		 (count      0))

	    ;; set up the field->num table
	    (for-each
	     (lambda (field)
	       (hash-table-set! field->num field count)
	       (set! count (+ count 1)))
	     fields)

	    ;; read the source table
	    (dbi:for-each-row
	     (lambda (a)
	       (set! fromdat (cons a fromdat))
	       (if (> (length fromdat) batch-len)
		   (begin
		     (set! fromdats (cons fromdat fromdats))
		     (set! fromdat  '())
		     (set! totrecords (+ totrecords 1)))))
	     (db:dbdat-get-db fromdb)
	     full-sel)
	    
	    ;; tack on remaining records in fromdat
	    (if (not (null? fromdat))
		(set! fromdats (cons fromdat fromdats)))

	    (if (common:low-noise-print 120 "sync-records")
		(debug:print-info 4 *default-log-port* "found " totrecords " records to sync"))

	    ;; read the target table
	    (dbi:for-each-row
	     (lambda (a)
	       (hash-table-set! todat (vector-ref a 0) a))
	     (db:dbdat-get-db todb)
	     full-sel)

	    ;; first pass implementation, just insert all changed rows
	    (for-each 
	     (lambda (targdb)
        (set! targdb (dbi:convert (db:dbdat-get-db targdb)))
        (if (eqv? (dbi:db-dbtype targdb) 'pg)
          (let* ((prep "")
                 (set-stmt "")
                 (key (car (map car fields)))
                 (list-fields (map car fields)))
            (set! prep (string-intersperse (map cadr fields) ","))
            (set! prep (conc "PREPARE fullupdate (" prep ") AS UPDATE " tablename " SET ")) ;;maybe add lookup in the future depending on where types are needed
              (let loop ((i 1))
                  (set! set-stmt (conc set-stmt (list-ref list-fields i) " = $" (+ i 1) ", "))
                (if (< i (- (length list-fields) 2))
                (loop (+ i 1))
                (set! set-stmt (conc set-stmt (list-ref list-fields (+ i 1)) " = $" (+ i 2) " WHERE " key " = $1;"))))
            (set! full-ins (conc prep set-stmt))))
	       (let* ((db (dbi:convert (db:dbdat-get-db targdb)))
		      (stmth  (dbi:prepare db full-ins)))
		 ;; (db:delay-if-busy targdb) ;; NO WAITING
		 
     (for-each
		  (lambda (fromdat-lst)
		    (dbi:with-transaction
		     db
		     (lambda ()
		       (for-each ;; 
			(lambda (fromrow)
			  (let* ((a    (vector-ref fromrow 0))
				 (curr (hash-table-ref/default todat a #f))
				 (same #t)
         (res #f)
         (len (length (vector->list fromrow))))
			    (let loop ((i 0))
			      (if (or (not curr)
				      (not (equal? (vector-ref fromrow i)(vector-ref curr i))))
				  (set! same #f))
			      (if (and same
				       (< i (- num-fields 1)))
				  (loop (+ i 1))))
          (if (not same)
              (begin 
                (set! res (apply dbi:prepare-exec stmth (vector->list fromrow)))
                (hash-table-set! numrecs tablename (+ 1 (hash-table-ref/default numrecs tablename 0)))))
          (if (and (not same) (eqv? (dbi:get-res res 'affected-rows) 0))
                  (let* ((prep ""))
                    (set! prep (string-intersperse (map cadr fields) ","))
                    (set! prep (conc "INSERT INTO " tablename " ( " (string-intersperse (map car fields) ",")
                     " ) VALUES ( " (string-intersperse (make-list len "?") ",") " );")) ;;maybe add lookup in the future depending on where types are needed 
                      (begin 
                        (hash-table-set! numrecs tablename (- 1 (hash-table-ref/default numrecs tablename 0)))
                        (apply dbi:exec db prep (vector->list fromrow))
                        (hash-table-set! numrecs tablename (+ 1 (hash-table-ref/default numrecs tablename 0))))))))
        ;;(begin
				 ;; (dbi:prepare-exec stmth (vector->list fromrow))
				  ;;(hash-table-set! numrecs tablename (+ 1 (hash-table-ref/default numrecs tablename 0)))))))
			fromdat-lst))
		  ))
		  fromdats)
		 (dbi:close stmth)))
	     (append (list todb) slave-dbs))))
	tbls)
       (let* ((runtime      (- (current-milliseconds) start-time))
	      (should-print (or (debug:debug-mode 12)
				(common:low-noise-print 120 "db sync" (> runtime 500))))) ;; low and high sync times treated as separate.
	 (if should-print (debug:print 3 *default-log-port* "INFO: db sync, total run time " runtime " ms"))
	 (for-each 

;;
;;  run-ids: '(1 2 3 ...) or #f (for all)
;;
(define (db:multi-db-sync dbstruct . options)
  (if (not (launch:setup))
      (debug:print 0 *default-log-port* "ERROR: not able to setup up for megatest.")
      (let* ((mtdb     (dbr:dbstruct-mtdb dbstruct))
	         (tmpdb    (db:get-db dbstruct))
             (refndb   (dbr:dbstruct-refndb dbstruct))
             (slave-dbs (dbr:dbstruct-slave-dbs dbstruct))
	     (allow-cleanup #t) ;; (if run-ids #f #t))
	     (tdbdat  (tasks:open-db))
	     (servers (tasks:get-all-servers (db:delay-if-busy tdbdat)))
	     (data-synced 0)) ;; count of changed records (I hope)
    
	;; kill servers
	(if (member 'killservers options)

;; 	       run-ids)))

	;; now ensure all newdb data are synced to megatest.db
	;; do not use the run-ids list passed in to the function
	;;
	(if (member 'new2old options)
	    (set! data-synced
		  (+ (apply db:sync-tables (db:sync-all-tables-list dbstruct) #f tmpdb refndb mtdb slave-dbs)
		      data-synced)))


        (if (member 'fixschema options)
            (begin
              (db:patch-schema-maindb (db:dbdat-get-db mtdb))
              (db:patch-schema-maindb (db:dbdat-get-db tmpdb))

                     comment      TEXT      DEFAULT '',
                     event_time   TIMESTAMP DEFAULT (strftime('%s','now')),
                     fail_count   INTEGER   DEFAULT 0,
                     pass_count   INTEGER   DEFAULT 0,
                     archived     INTEGER   DEFAULT 0, -- 0=no, > 1=archive block id where test data can be found
                     last_update  INTEGER DEFAULT (strftime('%s','now')),
                        CONSTRAINT testsconstraint UNIQUE (run_id, testname, item_path));")
     (sqlite3:execute db "CREATE INDEX IF NOT EXISTS tests_index ON tests (run_id, testname, item_path);")
     (sqlite3:execute db "CREATE TRIGGER  IF NOT EXISTS update_tests_trigger AFTER UPDATE ON tests
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE tests SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;")
     (sqlite3:execute db "CREATE TABLE IF NOT EXISTS test_steps