Megatest

# make install CSCOPTS='-accumulate-profile -profile-name $(PWD)/profile-ww$(shell date +%V.%u)'
# rm <files>.o ; make install CSCOPTS='-profile' ; ... ;  chicken-profile | less
SHELL=/bin/bash
PREFIX=$(PWD)
CSCOPTS=
INSTALL=install
SRCFILES = common.scm items.scm launch.scm ods.scm runconfig.scm	\
SRCFILES = common.scm items.scm launch.scm runconfig.scm	\
           server.scm configf.scm db.scm keys.scm margs.scm		\
           process.scm runs.scm tasks.scm tests.scm genexample.scm	\
           http-transport.scm filedb.scm tdb.scm client.scm mt.scm	\
           ezsteps.scm lock-queue.scm sdb.scm rmt.scm api.scm		\
           subrun.scm portlogger.scm archive.scm env.scm		\
           diff-report.scm cgisetup/models/pgdb.scm

# module source files
MSRCFILES = dbmod.scm servermod.scm apimod.scm commonmod.scm rmtmod.scm 
MSRCFILES = dbmod.scm servermod.scm apimod.scm commonmod.scm rmtmod.scm ods.scm
MOFILES = $(addprefix mofiles/,$(MSRCFILES:%.scm=%.o))
MOIMPFILES = $(MSRCFILES:%.scm=%.import.o)
# ftail.scm rmtmod.scm commonmod.scm removed
# MSRCFILES = ducttape-lib.scm pkts.scm stml2.scm cookie.scm mutils.scm	\
#             mtargs.scm commonmod.scm dbmod.scm adjutant.scm ulex.scm	\
#             rmtmod.scm apimod.scm

tests.o runs.o dashboard.o dashboard-tests.o dashboard-context-menu.o dashboard-main.o  : run_records.scm

db.o ezsteps.o keys.o launch.o megatest.o monitor.o runs-for-ref.o runs.o tests.o : key_records.scm

tests.o tasks.o dashboard-tasks.o : task_records.scm

runs.o : test_records.scm
api.o rmt.o db.o : mofiles/apimod.o mofiles/dbmod.o mofiles/rmtmod.o
api.o rmt.o db.o : mofiles/apimod.o mofiles/dbmod.o mofiles/rmtmod.o mofiles/ods.o

megatest.o : megatest-fossil-hash.scm megatest-version.scm

rmt.scm client.scm common.scm configf.scm dashboard-guimonitor.scm dashboard-tests.scm dashboard.scm db.scm dcommon.scm ezsteps.scm fs-transport.scm http-transport.scm index-tree.scm items.scm keys.scm launch.scm megatest.scm monitor.scm mt.scm newdashboard.scm runconfig.scm runs.scm server.scm tdb.scm tests.scm tree.scm : common_records.scm megatest-version.scm

common_records.scm : altdb.scm

# mofiles/stml2.o : mofiles/cookie.o
# configf.o : mofiles/commonmod.o

vg.o dashboard.o : vg_records.scm megatest-version.scm

dcommon.o : mofiles/dcommonmod.o run_records.scm

mofiles/stml2.o : mofiles/cookie.o
mofiles/dbmod.o : mofiles/ods.o

# # special include based modules
# mofiles/pkts.o      : pkts/pkts.scm
# mofiles/stml2.o     : cookie.o
# # mofiles/mtargs.o    : mtargs/mtargs.scm
# # mofiles/mtconfigf.o : mtconfigf/mtconfigf.scm
# mofiles/ulex.o      : ulex/ulex.scm

;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

;;======================================================================

(use
(use srfi-1 data-structures posix regex-case (prefix base64 base64:)
 (prefix base64 base64:)
     format dot-locking csv-xml z3 udp ;; sql-de-lite
     hostinfo md5 message-digest typed-records directory-utils stack
     matchable regex posix (srfi 18) extras ;; tcp 
     (prefix nanomsg nmsg:)
     (prefix sqlite3 sqlite3:)
     pkts (prefix dbi dbi:)
     )
 (prefix nanomsg nmsg:)
 (prefix sqlite3 sqlite3:)
 (srfi 18)
 csv-xml
 data-structures
 directory-utils
 dot-locking
 extras ;; tcp 
 format
 hostinfo
 matchable
 md5
 message-digest
 pkts
 (prefix dbi dbi:)
 posix
 posix
 regex
 regex-case
 srfi-1
 stack
 typed-records
 udp ;; sql-de-lite
 z3
 )

(declare (unit common))
(declare (uses commonmod))
(import commonmod)

;; dbr:dbstruct is used here. should move it
(declare (uses dbmod))

		((args:get-arg "-debug")         #t)
		(else #f))
	       (cond ;; verbosity arg
		((args:get-arg "-q") 'v)
		((args:get-arg "-q") 'q)
		(else #f))))

;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message
(define (common:fail-safe thunk warning-message-on-exception)
  (handle-exceptions
   exn
   (begin
     (debug:print-info 0 *default-log-port* "notable but nonfatal condition - "warning-message-on-exception", exn=" exn)
     (debug:print-info 0 *default-log-port*
                       (string-substitute "\n?Error:" "nonfatal condition:"
                                          (with-output-to-string
                                            (lambda ()
                                              (print-error-message exn) ))))
     (debug:print-info 0 *default-log-port* "    -- continuing after nonfatal condition...")
     #f)
   (thunk)))

(define getenv get-environment-variable)
(define (safe-setenv key val)
  (if (or (substring-index "!" key)
	  (substring-index ":" key)  ;; variables containing : are for internal use and cannot be environment variables.
	  (substring-index "." key)) ;; periods are not allowed in environment variables
      (debug:print-error 4 *default-log-port* "skip setting internal use only variables containing \":\" or starting with \"!\"")
      (if (and (string? val)
	       (string? key))
	  (handle-exceptions
	      exn
	      (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val ", exn=" exn)
	    (setenv key val))
	  (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val))))

(define home (getenv "HOME"))
(define user (getenv "USER"))


;; returns list of fd count, socket count
(define (get-file-descriptor-count #!key  (pid (current-process-id )))
  (list
    (length (glob (conc "/proc/" pid "/fd/*")))
    (length  (filter identity (map socket? (glob (conc "/proc/" pid "/fd/*")))))
  )
)

  

;; GLOBALS

;; CONTEXTS
(defstruct cxt
  (taskdb #f)
  (cmutex (make-mutex)))
;; (define *contexts* (make-hash-table))
;; (define *context-mutex* (make-mutex))

;; ;; safe method for accessing a context given a toppath
;; ;;
;; (define (common:with-cxt toppath proc)
;;   (mutex-lock! *context-mutex*)
;;   (let ((cxt (hash-table-ref/default *contexts* toppath #f)))
;;     (if (not cxt)
;;         (set! cxt (let ((x (make-cxt)))(hash-table-set! *contexts* toppath x) x)))
;;     (let ((cxt-mutex (cxt-mutex cxt)))
;;       (mutex-unlock! *context-mutex*)
;;       (mutex-lock! cxt-mutex)
;;       (let ((res (proc cxt)))
;;         (mutex-unlock! cxt-mutex)
;;         res))))
        
;; A hash table that can be accessed by #{scheme ...} calls in
;; config files. Allows communicating between confgs
;;
(define *user-hash-data* (make-hash-table))

(define *pkts-info*    (make-hash-table)) ;; store stuff like the last parent here

(define *runconfigdat* #f)   ;; run configs data
(define *configdat*    #f)   ;; megatest.config data
(define *configstatus* #f)   ;; status of data; 'fulldata : all processing done, #f : no data yet, 'partialdata : partial read done

(define *already-seen-runconfig-info* #f)

(define *test-meta-updated* (make-hash-table))
(define *globalexitstatus*  0) ;; attempt to work around possible thread issues
(define *passnum*           0) ;; when running track calls to run-tests or similar
;; (define *alt-log-file* #f)  ;; used by -log

(define *time-zero* (current-seconds)) ;; for the watchdog
(define *default-area-tag* "local")

;; DATABASE
(define *dbstruct-db*         #f) ;; used to cache the dbstruct in db:setup. Goal is to remove this.
;; db stats
(define *db-stats*            (make-hash-table)) ;; hash of vectors < count duration-total >
(define *db-stats-mutex*      (make-mutex))
;; db access
(define *db-last-access*      (current-seconds)) ;; last db access, used in server
(define *db-write-access*     #t)
;; db sync
(define *db-last-sync*        0)                 ;; last time the sync to megatest.db happened
(define *db-sync-in-progress* #f)                ;; if there is a sync in progress do not try to start another
(define *db-multi-sync-mutex* (make-mutex))      ;; protect access to *db-sync-in-progress*, *db-last-sync*
;; task db
(define *task-db*             #f) ;; (vector db path-to-db)
(define *db-access-allowed*   #t) ;; flag to allow access
(define *db-access-mutex*     (make-mutex))
(define *db-transaction-mutex* (make-mutex))

(define *db-api-call-time*    (make-hash-table)) ;; hash of command => (list of times)
;; no sync db
(define *no-sync-db*          #f)

;; SERVER
(define *my-client-signature* #f)
(define *transport-type*    'http)             ;; override with [server] transport http|rpc|nmsg
(define *runremote*         #f)                ;; if set up for server communication this will hold <host port>
;; (define *max-cache-size*    0)
(define *logged-in-clients* (make-hash-table))
(define *server-id*         #f)
(define *server-info*       #f)  ;; good candidate for easily convert to non-global
(define *time-to-exit*      #f)
(define *server-run*        #t)
(define *run-id*            #f)
(define *server-kind-run*   (make-hash-table))
(define *home-host*         #f)
;; (define *total-non-write-delay* 0)
(define *heartbeat-mutex*   (make-mutex))

(define *server-overloaded*  #f)

;; client
(define *rmt-mutex*         (make-mutex))     ;; remote access calls mutex 

;; RPC transport
(define *rpc:listener*      #f)

;; KEY info
(define *target*            (make-hash-table)) ;; cache the target here; target is keyval1/keyval2/.../keyvalN
(define *keys*              (make-hash-table)) ;; cache the keys here
(define *keyvals*           (make-hash-table))
(define *toptest-paths*     (make-hash-table)) ;; cache toptest path settings here
(define *test-paths*        (make-hash-table)) ;; cache test-id to test run paths here
(define *test-ids*          (make-hash-table)) ;; cache run-id, testname, and item-path => test-id
(define *test-info*         (make-hash-table)) ;; cache the test info records, update the state, status, run_duration etc. from testdat.db

(define *run-info-cache*     (make-hash-table)) ;; run info is stable, no need to reget
(define *launch-setup-mutex* (make-mutex))     ;; need to be able to call launch:setup often so mutex it and re-call the real deal only if *toppath* not set
(define *homehost-mutex*     (make-mutex))

;; Miscellaneous
(define *triggers-mutex*     (make-mutex))     ;; block overlapping processing of triggers

(use posix-extras pathname-expand files)

;; this plugs a hole in posix-extras in recent chicken versions > 4.9)
(let-values (( (chicken-release-number chicken-major-version)
               (apply values
                      (map string->number
                           (take
                            (string-split (chicken-version) ".")
                            2)))))
  (let ((resolve-pathname-broken?
         (or (> chicken-release-number 4)
             (and (eq? 4 chicken-release-number) (> chicken-major-version 9)))))
    (if resolve-pathname-broken?
        (define ##sys#expand-home-path pathname-expand))))
      
(define (realpath x) (resolve-pathname  (pathname-expand (or x "/dev/null")) ))

(define (common:get-this-exe-fullpath #!key (argv (argv)))
  (let* ((this-script
          (cond
           ((and (> (length argv) 2)
                 (string-match "^(.*/csi|csi)$" (car argv))
                 (string-match "^-(s|ss|sx|script)$" (cadr argv)))
            (caddr argv))
           (else (car argv))))
         (fullpath (realpath this-script)))
    fullpath))
(define *common:this-exe-fullpath* (common:get-this-exe-fullpath))
(define *common:this-exe-dir*      (pathname-directory *common:this-exe-fullpath*))
(define *common:this-exe-name*     (pathname-strip-directory *common:this-exe-fullpath*))

;; when called from a wrapper I need sometimes to find the calling
;; wrapper, this is for dashboard to find the correct megatest.
;;
(define (common:find-local-megatest #!optional (progname "megatest"))
  (let ((res (filter file-exists?
		     (map (lambda (updir)
			    (let* ((lm  (car (argv)))
				   (dir (pathname-directory lm))
				   (exe (pathname-strip-directory lm)))
			      (conc (if dir (conc dir "/") "")
				    (case (string->symbol exe)
				      ((dboard)    (conc updir progname))
				      ((mtest)     (conc updir progname))
				      ((dashboard) progname)
				      (else exe)))))
			  '("../../" "../")))))
    (if (null? res)
	(begin
	  (debug:print 0 *current-log-port* "Failed to find this executable! Using what can be found on the path")
	  progname)
	(car res))))

(define *common:logpro-exit-code->status-sym-alist*
  '( ( 0 . pass )
     ( 1 . fail )
     ( 2 . warn )
     ( 3 . check )
     ( 4 . waived )
     ( 5 . abort )
     ( 6 . skip )))

(define (common:logpro-exit-code->status-sym exit-code)
  (or (alist-ref exit-code *common:logpro-exit-code->status-sym-alist*) 'fail))

(define (common:worse-status-sym ss1 ss2)
  (let loop ((status-syms-remaining '(abort fail check skip warn waived pass)))
    (cond
     ((null? status-syms-remaining)
      'fail)
     ((eq? (car status-syms-remaining) ss1)
      ss1)
     ((eq? (car status-syms-remaining) ss2)
      ss2)
     (else
      (loop (cdr status-syms-remaining))))))

(define (common:steps-can-proceed-given-status-sym status-sym)
  (if (member status-sym '(warn waived pass))
      #t
      #f))

(define (status-sym->string status-sym)
  (case status-sym
      ((pass) "PASS")
    ((fail) "FAIL")
    ((warn) "WARN")
    ((check) "CHECK")
    ((waived) "WAIVED")
    ((abort) "ABORT")
    ((skip) "SKIP")
    (else "FAIL")))

(define (common:logpro-exit-code->test-status exit-code)
  (status-sym->string (common:logpro-exit-code->status-sym exit-code)))

(define *host-loads*         (make-hash-table))

;; cache environment vars for each run here
(define *env-vars-by-run-id* (make-hash-table))

;; Testconfig and runconfig caches. 
(define *testconfigs*        (make-hash-table)) ;; test-name => testconfig
(define *runconfigs*         (make-hash-table)) ;; target    => runconfig

;; This is a cache of pre-reqs met, don't re-calc in cases where called with same params less than
;; five seconds ago
(define *pre-reqs-met-cache* (make-hash-table))

;; cache of verbosity given string
;;
(define *verbosity-cache*    (make-hash-table))

(define (common:clear-caches)
  (set! *target*             (make-hash-table))
  (set! *keys*               (make-hash-table))
  (set! *keyvals*            (make-hash-table))
  (set! *toptest-paths*      (make-hash-table))
  (set! *test-paths*         (make-hash-table))
  (set! *test-ids*           (make-hash-table))
  (set! *test-info*          (make-hash-table))
  (set! *run-info-cache*     (make-hash-table))
  (set! *env-vars-by-run-id* (make-hash-table))
  (set! *test-id-cache*      (make-hash-table)))

;; Generic string database
(define sdb:qry #f) ;; (make-sdb:qry)) ;;  'init #f)
;; Generic path database
(define *fdb* #f)

(define *last-launch* (current-seconds)) ;; use for throttling the launch rate. Would be better to use the db and last time of a test in LAUNCHED state.

;;======================================================================
;; V E R S I O N
;;======================================================================

(define (common:get-full-version)
  (conc megatest-version "-" megatest-fossil-hash))

(define (common:version-signature)
  (conc megatest-version "-" (substring megatest-fossil-hash 0 4)))

;; from metadat lookup MEGATEST_VERSION
;;
(define (common:get-last-run-version) ;; RADT => How does this work in send-receive function??; assume it is the value saved in some DB
  (rmt:get-var "MEGATEST_VERSION"))

(define (common:get-last-run-version-number)
  (string->number 
   (substring (common:get-last-run-version) 0 6)))

(define (common:set-last-run-version)
  (rmt:set-var "MEGATEST_VERSION" (common:version-signature)))

;; postive number if megatest version > db version
;; negative number if megatest version < db version
(define (common:version-db-delta)
         (- megatest-version (common:get-last-run-version-number)))

(define (common:version-changed?)
  (not (equal? (common:get-last-run-version)
               (common:version-signature))))

(define (common:api-changed?)
  (not (equal? (substring (->string megatest-version) 0 4)
               (substring (conc (common:get-last-run-version)) 0 4))))


(define (common:get-sync-lock-filepath)
  (let* ((tmp-area     (common:get-db-tmp-area))
         (lockfile     (conc tmp-area "/megatest.db.sync-lock")))
    lockfile))
    
;; Move me elsewhere ...
;; RADT => Why do we meed the version check here, this is called only if version misma
;;
(define (common:cleanup-db dbstruct #!key (full #f))
  (apply db:multi-db-sync 
   dbstruct
   'schema
   ;; 'new2old
   'killservers
   'adj-target
   ;; 'old2new
   'new2old
   ;; (if full
       '(dejunk)
       ;; '())
       )
  (if (common:api-changed?)
      (common:set-last-run-version)))

(define (common:snapshot-file filepath #!key (subdir  ".") )
  (if (file-exists? filepath)
      (let* ((age-sec  (lambda (file)
                         (if (file-exists? file)
                             (- (current-seconds) (file-modification-time file))
                             1000000000))) ;; return really old value if file doesn't exist.  we want to clobber it if old or not exist.
             (ok-flag  #t)
             (age-mins (lambda (file) (/ (age-sec   file) 60)))
             (age-hrs  (lambda (file) (/ (age-mins file) 60)))
             (age-days (lambda (file) (/ (age-hrs   file) 24)))
             (age-wks  (lambda (file) (/ (age-days  file) 7)))
             (docmd    (lambda (cmd)
                         (cond
                          (ok-flag
                           (let ((res (system cmd)))
                             (cond
                              ((eq? 0 res)
                               #t)
                              (else
                               (set! ok-flag #f)
                               (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Command failed with exit code "
                                            (if (< res 0)
                                                res
                                                (/ res 8)) " ["cmd"]" )
                               #f))))
                          (else
                           (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Not runnining command due to prior error. ["cmd"]")
                           #f))))
             (copy     (lambda (src dest) (docmd (conc "/bin/cp '"src"' '"dest"'"))))
             (copy+zip (lambda (src dest) (docmd (conc "gzip -c - < '"src"' > '"dest"'"))))
             (fullpath (realpath filepath))
             (basedir  (pathname-directory fullpath))
             (basefile (pathname-strip-directory fullpath))
             ;;(prevfile (conc filepath ".prev.gz"))
             (minsfile (conc basedir "/" subdir "/" basefile ".mins.gz"))
             (hrsfile  (conc basedir "/" subdir "/" basefile ".hrs.gz"))
             (daysfile (conc basedir "/" subdir "/" basefile ".days.gz"))
             (wksfile  (conc basedir "/" subdir "/" basefile ".weeks.gz")))

        ;; create subdir it not exists
        (if (not (directory-exists? (conc basedir "/" subdir)))
            (docmd (conc "/bin/mkdir -p '"(conc basedir "/" subdir)"'")))
        
        ;; copy&zip <file> to <file>.mins if not exists
        (if (not (file-exists? minsfile))
            (copy+zip filepath minsfile))
        ;; copy <file>.mins to <file>.hrs if not exists
        (if (not (file-exists? hrsfile))
            (copy minsfile hrsfile))
        ;; copy <file>.hrs to <file>.days if not exists
        (if (not (file-exists? daysfile))
            (copy hrsfile daysfile))
        ;; copy <file>.days to <file>.weeks if not exists
        (if (not (file-exists? wksfile))
            (copy daysfile wksfile))


        ;; if age(<file>.mins.gz) >= 1h:
        ;;     copy <file>.mins.gz <file>.hrs.gz
        ;;     copy <prev file> <file>.mins.gz
        (when (>= (age-mins minsfile) 1)
          (copy minsfile hrsfile)
          (copy+zip filepath  minsfile))
        
        ;; if age(<file>.hrs.gz) >= 1d:
        ;;     copy <file>.hrs.gz <file>.days.gz
        ;;     copy <file>.mins.gz <file>.hrs.gz
        (when (>= (age-days hrsfile) 1)
          (copy hrsfile daysfile)
          (copy minsfile hrsfile))
        
        ;; if age(<file>.days.gz) >= 1w:
        ;;     copy <file>.days.gz <file>.weeks.gz
        ;;     copy <file>.hrs.gz <file>.days.gz
        (when (>= (age-wks daysfile) 1)
          (copy daysfile wksfile)
          (copy hrsfile daysfile))
        #t)
      #f))
  
        
        
;; Rotate logs, logic: 
;;                 if > 500k and older than 1 week:
;;                     remove previous compressed log and compress this log
;; WARNING: This proc operates assuming that it is in the directory above the
;;          logs directory you wish to log-rotate.
;;
(define (common:rotate-logs)
  (let* ((all-files (make-hash-table))
	 (stats     (make-hash-table))
	 (inc-stat  (lambda (key)
		      (hash-table-set! stats key (+ (hash-table-ref/default stats key 0) 1))))
	(max-allowed (string->number (or (configf:lookup *configdat* "setup" "max-logfiles") "300")))) ;; name -> age
    (if (not (directory-exists? "logs"))(create-directory "logs"))
    (directory-fold 
     (lambda (file rem)
       (handle-exceptions
	exn
	(begin
	  (debug:print-info 2 *default-log-port* "unable to rotate log " file ", probably handled by another process, this is safe to ignore. exn=" exn)
	  (debug:print 2 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	  ;; (print-call-chain (current-error-port)) ;; 
	  )
	(let* ((fullname  (conc "logs/" file))
	       (mod-time  (file-modification-time fullname))
	       (file-age  (- (current-seconds) mod-time))
	       (file-old  (> file-age (* 48 60 60)))
	       (file-big  (> (file-size fullname) 200000)))
	  (hash-table-set! all-files file mod-time)
	  (if (or (and (string-match "^.*.log" file)
		       file-old
		       file-big)
		  (and (string-match "^server-.*.log" file)
		       file-old))
	      (let ((gzfile (conc fullname ".gz")))
		(if (common:file-exists? gzfile)
		    (begin
		      (debug:print-info 0 *default-log-port* "removing " gzfile)
		      (delete-file* gzfile)
		      (hash-table-delete!  all-files gzfile) ;; needed?
		      ))
		(debug:print-info 0 *default-log-port* "compressing " file)
		(system (conc "gzip " fullname))
		(inc-stat "gzipped")
		(hash-table-set! all-files (conc file ".gz") file-age)  ;; add the .gz file and remove the base file
		(hash-table-delete! all-files file)
		)
	      (if (and (> file-age (* (string->number (or (configf:lookup *configdat* "setup" "log-expire-days") "30")) 24 3600))
		       (file-exists? fullname)) ;; just in case it was gzipped - will get it next time
		  (handle-exceptions
		   exn
		   #f
		   (if (directory? fullname)
		       (begin
			 (debug:print-info 0 *default-log-port* fullname " in logs directory is a directory! Cannot rotate it, it is best to not put subdirectories in the logs dir.")
			 (inc-stat "directories"))
		       (begin
			 (delete-file* fullname)
			 (inc-stat "deleted")))
		   (hash-table-delete! all-files file)))))))
     '()
     "logs")
    (for-each
     (lambda (category)
       (let ((quant (hash-table-ref/default stats category 0)))
	 (if (> quant 0)
	     (debug:print-info 0 *default-log-port* category " log files: " quant))))
     `("deleted" "gzipped" "directories"))
    (let ((num-logs (hash-table-size all-files)))
      (if (> num-logs max-allowed) ;; because NFS => don't let number of logs exceed 300
	  (let ((files (take (sort (hash-table-keys all-files)
				   (lambda (a b)
				     (< (hash-table-ref all-files a)(hash-table-ref all-files b))))
			     (- num-logs max-allowed))))
	    (for-each
	     (lambda (file)
	       (let* ((fullname (conc "logs/" file)))
		 (if (directory? fullname)
		     (debug:print-info 0 *default-log-port* fullname " in logs directory is a directory! Cannot rotate it, it is best to not put subdirectories in the logs dir.")
		     (handle-exceptions
		      exn
		      (debug:print-error 0 *default-log-port* "failed to remove " fullname ", exn=" exn)
		      (delete-file* fullname)))))
	     files)
	    (debug:print-info 0 *default-log-port* "Deleted " (length files) " files from logs, keeping " max-allowed " files."))))))
  
;; Force a megatest cleanup-db if version is changed and skip-version-check not specified
;; Do NOT check if not on homehost!
;;
(define (common:exit-on-version-changed)
  (if (common:on-homehost?)
      (if (common:api-changed?)
	  (let* ((mtconf (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.config"))
                (dbfile  (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.db"))
                (read-only (not (file-write-access? dbfile)))
                (dbstruct (db:setup #t)))
	    (debug:print 0 *default-log-port*
			 "WARNING: Version mismatch!\n"
			 "   expected: " (common:version-signature) "\n"
			 "   got:      " (common:get-last-run-version))
            (cond
             ((get-environment-variable "MT_SKIP_DB_MIGRATE") #t)
             ((and (common:file-exists? mtconf) (common:file-exists? dbfile) (not read-only)
                   (eq? (current-user-id)(file-owner mtconf))) ;; safe to run -cleanup-db
              (debug:print 0 *default-log-port* "   I see you are the owner of megatest.config, attempting to cleanup and reset to new version")
              (handle-exceptions
               exn
               (begin
                 (debug:print 0 *default-log-port* "Failed to switch versions. exn=" exn)
                 (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
                 (print-call-chain (current-error-port))
                 (exit 1))
               (common:cleanup-db dbstruct)))
             ((not (common:file-exists? mtconf))
              (debug:print 0 *default-log-port* "   megatest.config does not exist in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             ((not (common:file-exists? dbfile))
              (debug:print 0 *default-log-port* "   megatest.db does not exist in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             ((not (eq? (current-user-id)(file-owner mtconf)))
              (debug:print 0 *default-log-port* "   You do not own megatest.db in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             (read-only
              (debug:print 0 *default-log-port* "   You have read-only access to this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             (else
              (debug:print 0 *default-log-port* " to switch versions you can run: \"megatest -cleanup-db\"")
              (exit 1)))))))
;;      (begin
;;	(debug:print 0 *default-log-port* "ERROR: cannot migrate version unless on homehost. Exiting.")
;;	(exit 1))))

;;======================================================================
;; S P A R S E   A R R A Y S
;;======================================================================

(define (make-sparse-array)
  (let ((a (make-sparse-vector)))
    (sparse-vector-set! a 0 (make-sparse-vector))
    a))

(define (sparse-array? a)
  (and (sparse-vector? a)
       (sparse-vector? (sparse-vector-ref a 0))))

(define (sparse-array-ref a x y)
  (let ((row (sparse-vector-ref a x)))
    (if row
	(sparse-vector-ref row y)
	#f)))

(define (sparse-array-set! a x y val)
  (let ((row (sparse-vector-ref a x)))
    (if row
	(sparse-vector-set! row y val)
	(let ((new-row (make-sparse-vector)))
	  (sparse-vector-set! a x new-row)
	  (sparse-vector-set! new-row y val)))))

;;======================================================================
;; L O C K E R S   A N D   B L O C K E R S 
;;======================================================================

;; block further accesses to databases. Call this before shutting db down
(define (common:db-block-further-queries)
  (mutex-lock! *db-access-mutex*)
  (set! *db-access-allowed* #f)
  (mutex-unlock! *db-access-mutex*))

(define (common:db-access-allowed?)
  (let ((val (begin
	       (mutex-lock! *db-access-mutex*)
	       *db-access-allowed*
	       (mutex-unlock! *db-access-mutex*))))
    val))

;;======================================================================
;; U S E F U L   S T U F F
;;======================================================================

;; convert things to an alist or assoc list, #f gets converted to ""
;;
(define (common:to-alist dat)
  (cond
   ((list? dat)   (map common:to-alist dat))
   ((vector? dat)
    (map common:to-alist (vector->list dat)))
   ((pair? dat)
    (cons (common:to-alist (car dat))
	  (common:to-alist (cdr dat))))
   ((hash-table? dat)
    (map common:to-alist (hash-table->alist dat)))
   (else
    (if dat
	dat
	""))))

(define (common:alist-ref/default key alist default)
  (or (alist-ref key alist) default))

(define (common:low-noise-print waitval . keys)
  (let* ((key      (string-intersperse (map conc keys) "-" ))
	 (lasttime (hash-table-ref/default *common:denoise* key 0))
	 (currtime (current-seconds)))
    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *common:denoise* key currtime)
	  #t)
	#f)))

(define (common:get-megatest-exe)
  (or (getenv "MT_MEGATEST") "megatest"))

(define (common:read-encoded-string instr)
  (handle-exceptions
   exn
   (handle-exceptions
    exn
    (begin
      (debug:print-error 0 *default-log-port* "received bad encoded string \"" instr "\", message: " ((condition-property-accessor 'exn 'message) exn) ", exn=" exn)
      (print-call-chain (current-error-port))
      #f)
    (read (open-input-string (base64:base64-decode instr))))
   (read (open-input-string (z3:decode-buffer (base64:base64-decode instr))))))

;;======================================================================
;; S T A T E S   A N D   S T A T U S E S
;;======================================================================

;; BBnote: *common:std-states* - dashboard filter control and test control state buttons defined here; used in set-fields-panel and dboard:make-controls
(define *common:std-states*   ;; for toggle buttons in dashboard
  '(
    (0 "ARCHIVED")
    (1 "STUCK")
    (2 "KILLREQ")
    (3 "KILLED")
    (4 "NOT_STARTED")
    (5 "COMPLETED")
    (6 "LAUNCHED")
    (7 "REMOTEHOSTSTART")
    (8 "RUNNING")
    ))

(define *common:dont-roll-up-states*
  '("DELETED"
    "REMOVING"
    "CLEANING"
    "ARCHIVE_REMOVING"
    ))

;; BBnote: *common:std-statuses* dashboard filter control and test control status buttons defined here; used in set-fields-panel and dboard:make-controls
;; note these statuses are sorted from better to worse.
;; This sort order is important to dcommon:status-compare3 and db:set-state-status-and-roll-up-items
(define *common:std-statuses*
  '(;; (0 "DELETED")  
    (1 "n/a")
    (2 "PASS")
    (3 "SKIP")
    (4 "WARN")
    (5 "WAIVED")
    (6 "CHECK")
    (7 "STUCK/DEAD")
    (8 "DEAD")
    (9 "FAIL")
    (10 "PREQ_FAIL")
    (11 "PREQ_DISCARDED")
    (12 "ABORT")))

(define (common:status>? s1 s2)
  (let* ((munged (map (lambda (x) `(,(cadr x) . ,(car x))) *common:std-statuses*))
	 (v1     (alist-ref s1 munged equal?))
	 (v2     (alist-ref s2 munged equal?)))
    (> v1 v2)))

(define *common:ended-states*       ;; states which indicate the test is stopped and will not proceed
  '("COMPLETED" "ARCHIVED" "KILLED" "KILLREQ" "STUCK" "INCOMPLETE" ))

(define *common:badly-ended-states* ;; these roll up as CHECK, i.e. results need to be checked
  '("KILLED" "KILLREQ" "STUCK" "INCOMPLETE" "DEAD"))

(define *common:well-ended-states* ;; an item's prereq in this state allows item to proceed
  '("PASS" "WARN" "CHECK" "WAIVED" "SKIP"))

;; BBnote: *common:running-states* used from db:set-state-status-and-roll-up-items
(define *common:running-states*     ;; test is either running or can be run
  '("RUNNING" "REMOTEHOSTSTART" "LAUNCHED" "STARTED"))

(define *common:cant-run-states*    ;; These are stopping conditions that prevent a test from being run
  '("COMPLETED" "KILLED" "UNKNOWN" "INCOMPLETE" "ARCHIVED"))

(define *common:not-started-ok-statuses* ;; if not one of these statuses when in not_started state treat as dead
  '("n/a" "na" "PASS" "FAIL" "WARN" "CHECK" "WAIVED" "DEAD" "SKIP"))

;; group tests into buckets corresponding to rollup
;;; Running, completed-pass,  completed-non-pass + worst status, not started.
;; filter out 
;(define (common:categorize-items-for-rollup in-tests)
;  (

(define (common:special-sort items order comp)
  (let ((items-order (map reverse order))
        (acomp       (or comp >)))
    (sort items
        (lambda (a b)
          (let ((a-num (cadr (or (assoc a items-order) '(0 0))))
                (b-num (cadr (or (assoc b items-order) '(0 0)))))
            (acomp a-num b-num))))))

;; ;; given a toplevel with currstate, currstatus apply state and status
;; ;;  => (newstate . newstatus)
;; (define (common:apply-state-status currstate currstatus state status)
;;   (let* ((cstate  (string->symbol (string-downcase currstate)))
;;          (cstatus (string->symbol (string-downcase currstatus)))
;;          (sstate  (string->symbol (string-downcase state)))
;;          (sstatus (string->symbol (string-downcase status)))
;;          (nstate  #f)
;;          (nstatus #f))
;;     (set! nstate
;;           (case cstate
;;             ((completed not_started killed killreq stuck archived) 
;;              (case sstate ;; completed -> sstate
;;                ((completed killed killreq stuck archived) completed)
;;                ((running remotehoststart launched)        running)
;;                (else                                      unknown-error-1)))
;;             ((running remotehoststart launched)
;;              (case sstate
;;                ((completed killed killreq stuck archived) #f) ;; need to look at all items
;;                ((running remotehoststart launched)        running)
;;                (else                                      unknown-error-2)))
;;             (else unknown-error-3)))
;;     (set! nstatus
;;           (case sstatus
;;             ((pass)
;;              (case nstate
;;                ((pass n/a deleted)     pass)
;;                ((warn)                 warn)
;;                ((fail)                 fail)
;;                ((check)               check)
;;                ((waived)             waived)
;;                ((skip)                 skip)
;;                ((stuck/dead)          stuck)
;;                ((abort)               abort)
;;                (else        unknown-error-4)))
;;             ((warn)
;;              (case nstate
;;                ((pass warn n/a skip deleted)   warn)
;;                ((fail)                         fail)
;;                ((check)                       check)
;;                ((waived)                     waived)
;;                ((stuck/dead)                  stuck)
;;                (else                unknown-error-5)))
;;             ((fail)
;;              (case nstate
;;                ((pass warn fail check n/a waived skip deleted stuck/dead stuck)  fail)
;;                ((abort)                                                         abort)
;;                (else                                                  unknown-error-6)))
;;             (else    unknown-error-7)))
;;     (cons 
;;      (if nstate  (symbol->string nstate)  nstate)
;;      (if nstatus (symbol->string nstatus) nstatus))))
               
;;======================================================================
;; D E B U G G I N G   S T U F F 
;;======================================================================

(define *verbosity*         1)
(define *logging*           #f)

(define (get-with-default val default)
  (let ((val (args:get-arg val)))
    (if val val default)))

(define (assoc/default key lst . default)
  (let ((res (assoc key lst)))
    (if res (cadr res)(if (null? default) #f (car default)))))

(define (common:get-testsuite-name)
  (or (configf:lookup *configdat* "setup" "area-name") ;; megatest is a flexible tool, testsuite is too limiting a description.
      (configf:lookup *configdat* "setup" "testsuite" )
      (getenv "MT_TESTSUITE_NAME")
      (pathname-file (or (if (string? *toppath* )
			     (pathname-file *toppath*)
			     #f)
			 (common:get-topath #f)))
      "please-set-setup-area-name")) ;; (pathname-file (current-directory)))))

;; safe getting of toppath
(define (common:get-toppath areapath)
  (or *toppath*
      (if areapath
	  (begin
	    (set! *toppath* areapath)
	    (setenv "MT_RUN_AREA_HOME" areapath)
	    areapath)
	  #f)
      (if (getenv "MT_RUN_AREA_HOME")
	  (begin
	    (set! *toppath* (getenv "MT_RUN_AREA_HOME"))
	    *toppath*)
	  #f)
      ;; last resort, look for megatest.config
      (let loop ((thepath (realpath ".")))
	(if (file-exists? (conc thepath "/megatest.config"))
	    thepath
	    (if (equal? thepath "/")
		(begin
		  (debug:print-error 0 *default-log-port* "Unable to find megatest home directory.")
		  #f)
		(loop (pathname-directory thepath)))))
      ))

(define common:get-area-name common:get-testsuite-name)

(define (common:get-db-tmp-area . junk)
  (if *db-cache-path*
      *db-cache-path*
      (if *toppath* ;; common:get-create-writeable-dir
	  (handle-exceptions
	      exn
	      (begin
		(debug:print-error 0 *default-log-port* "Couldn't create path to " *db-cache-path* ", exn=" exn)
		(exit 1))
	      (let* ((tsname (common:get-testsuite-name))
		     (dbpath (common:get-create-writeable-dir
			      (list (conc "/tmp/" (current-user-name)
					  "/megatest_localdb/"
					  tsname "/"
					  (string-translate *toppath* "/" "."))
				    (conc "/tmp/" (current-process-id) ;; just in case we have an issue with the dir by own user name
					  "/megatest_localdb/"
					  tsname
					  (string-translate *toppath* "/" "."))
				    ))))
		(set! *db-cache-path* dbpath)
		dbpath))
	  #f)))

;;======================================================================
;; E X I T   H A N D L I N G
;;======================================================================

(define (common:run-sync?)
    (and (common:on-homehost?)
	 (args:get-arg "-server")))

;;   (let ((ohh (common:on-homehost?))
;; 	(srv (args:get-arg "-server")))
;;     (and ohh srv)))
    ;; (debug:print-info 0 *default-log-port* "common:run-sync? ohh=" ohh ", srv=" srv)



(define *wdnum* 0)
(define *wdnum*mutex (make-mutex))


(define (common:human-time)
  (time->string (seconds->local-time (current-seconds)) "%Y-%m-%d %H:%M:%S"))


;; currently the primary job of the watchdog is to run the sync back to megatest.db from the db in /tmp
;; if we are on the homehost and we are a server (by definition we are on the homehost if we are a server)
;;
(define (common:readonly-watchdog dbstruct)
  (thread-sleep! 0.05) ;; delay for startup
  (debug:print-info 13 *default-log-port* "common:readonly-watchdog entered.")
  ;; sync megatest.db to /tmp/.../megatst.db
  (let* ((sync-cool-off-duration   3)
        (golden-mtdb     (dbr:dbstruct-mtdb dbstruct))
        (golden-mtpath   (db:dbdat-get-path golden-mtdb))
        (tmp-mtdb        (dbr:dbstruct-tmpdb dbstruct))
        (tmp-mtpath      (db:dbdat-get-path tmp-mtdb)))
    (debug:print-info 0 *default-log-port* "Read-only periodic sync thread started.")
    (let loop ((last-sync-time 0))
      (debug:print-info 13 *default-log-port* "loop top tmp-mtpath="tmp-mtpath" golden-mtpath="golden-mtpath)
      (let* ((duration-since-last-sync (- (current-seconds) last-sync-time)))
        (debug:print-info 13 *default-log-port* "duration-since-last-sync="duration-since-last-sync)
        (if (and (not *time-to-exit*)
                 (< duration-since-last-sync sync-cool-off-duration))
            (thread-sleep! (- sync-cool-off-duration duration-since-last-sync)))
        (if (not *time-to-exit*)
            (let ((golden-mtdb-mtime (file-modification-time golden-mtpath))
                  (tmp-mtdb-mtime    (file-modification-time tmp-mtpath)))
	      (if (> golden-mtdb-mtime tmp-mtdb-mtime)
		  (if (< golden-mtdb-mtime (- (current-seconds) 3)) ;; file has NOT been touched in past three seconds, this way multiple servers won't fight to sync back
		      (let ((res (db:multi-db-sync dbstruct 'old2new)))
			(debug:print-info 13 *default-log-port* "rosync called, " res " records transferred."))))
              (loop (current-seconds)))
            #t)))
    (debug:print-info 0 *default-log-port* "Exiting readonly-watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)" mtpath="golden-mtpath)))

;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define (common:watchdog)
  (debug:print-info 13 *default-log-port* "common:watchdog entered.")
  (if (launch:setup)
      (if (common:on-homehost?)
	  (let ((dbstruct (db:setup #t)))
	    (debug:print-info 13 *default-log-port* "after db:setup with dbstruct=" dbstruct)
	    (cond
	     ((dbr:dbstruct-read-only dbstruct)
	      (debug:print-info 13 *default-log-port* "loading read-only watchdog")
	      (common:readonly-watchdog dbstruct))
	     (else
	      (debug:print-info 13 *default-log-port* "loading writable-watchdog.")
              (let* ((syncer (or (configf:lookup *configdat* "server" "sync-method") "brute-force-sync")))
                (cond
                 ((equal? syncer "brute-force-sync")
                  (server:writable-watchdog-bruteforce dbstruct))
                 ((equal? syncer "delta-sync")
                  (server:writable-watchdog-deltasync dbstruct))
                 (else
                  (debug:print-error 0 *default-log-port* "Unknown server/sync-method specified ("syncer") - valid values are brute-force-sync and delta-sync.")
                  (exit 1)))
                ;;(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] Syncer started (method="syncer")")
                )))
	    (debug:print-info 13 *default-log-port* "watchdog done."))
	  (debug:print-info 13 *default-log-port* "no need for watchdog on non-homehost"))))


(define (std-exit-procedure)
  ;;(common:telemetry-log-close)
  (on-exit (lambda () 0))
  ;;(debug:print-info 13 *default-log-port* "std-exit-procedure called; *time-to-exit*="*time-to-exit*)
  (let ((no-hurry  (if *time-to-exit* ;; hurry up
		       #f
		       (begin
			 (set! *time-to-exit* #t)
			 #t))))
    (debug:print-info 4 *default-log-port* "starting exit process, finalizing databases.")
    (if (and no-hurry (debug:debug-mode 18))
	(rmt:print-db-stats))
    (let ((th1 (make-thread (lambda () ;; thread for cleaning up, give it five seconds
                              (if *dbstruct-db* (db:close-all *dbstruct-db*)) ;; one second allocated
			      (if *task-db*    
				  (let ((db (cdr *task-db*)))
				    (if (sqlite3:database? db)
					(begin
					  (sqlite3:interrupt! db)
					  (sqlite3:finalize! db #t)
					  ;; (vector-set! *task-db* 0 #f)
					  (set! *task-db* #f)))))
                              (http-client#close-all-connections!)
                              ;; (if (and *runremote*
                              ;;          (remote-conndat *runremote*))
                              ;;     (begin
                              ;;       (http-client#close-all-connections!))) ;; for http-client
                              (if (not (eq? *default-log-port* (current-error-port)))
                                  (close-output-port *default-log-port*))
			      (set! *default-log-port* (current-error-port))) "Cleanup db exit thread"))
	  (th2 (make-thread (lambda ()
			      (debug:print 4 *default-log-port* "Attempting clean exit. Please be patient and wait a few seconds...")
			      (if no-hurry
                                  (begin
                                    (thread-sleep! 5)) ;; give the clean up few seconds to do it's stuff
                                  (begin
      				  (thread-sleep! 2)))
      			      (debug:print 4 *default-log-port* " ... done")
      			      )
			    "clean exit")))
      (thread-start! th1)
      (thread-start! th2)
      (thread-join! th1)
      )
    )

  0)

(define (std-signal-handler signum)
  ;; (signal-mask! signum)
  (set! *time-to-exit* #t) 
  ;;(debug:print-info 13 *default-log-port* "got signal "signum)
  (debug:print-error 0 *default-log-port* "Received signal " signum " aaa exiting promptly")
  ;; (std-exit-procedure) ;; shouldn't need this since we are exiting and it will be called anyway
  (exit))

(define (special-signal-handler signum)
  ;; (signal-mask! signum)
  (set! *time-to-exit* #t)
  ;;(debug:print-info 13 *default-log-port* "got signal "signum)
  (debug:print-error 0 *default-log-port* "Received signal " signum " sending email befor exiting!!")
  ;;TODO send email to notify admin contact listed in the config that the lisner got killed
  ;; (std-exit-procedure) ;; shouldn't need this since we are exiting and it will be called anyway
  (exit))


(set-signal-handler! signal/int  std-signal-handler)  ;; ^C
(set-signal-handler! signal/term std-signal-handler)

;; (set-signal-handler! signal/stop std-signal-handler)  ;; ^Z NO, do NOT handle ^Z!

;;======================================================================
;; M I S C   U T I L S
;;======================================================================

;; convert stuff to a number if possible
(define (any->number val)
  (cond 
   ((number? val) val)
   ((string? val) (string->number val))
   ((symbol? val) (any->number (symbol->string val)))
   (else #f)))

(define (any->number-if-possible val)
  (let ((num (any->number val)))
    (if num num val)))

(define (patt-list-match item patts)
  (debug:print-info 8 *default-log-port* "patt-list-match item=" item " patts=" patts)
  (if (and item patts)  ;; here we are filtering for matches with item patterns
      (let ((res #f))   ;; look through all the item-patts if defined, format is patt1,patt2,patt3 ... wildcard is %
	(for-each 
	 (lambda (patt)
	   (let ((modpatt (string-substitute "%" ".*" patt #t)))
	     (debug:print-info 10 *default-log-port* "patt " patt " modpatt " modpatt)
	     (if (string-match (regexp modpatt) item)
		 (set! res #t))))
	 (string-split patts ","))
	res)
      #t))

;; '(print (string-intersperse (map cadr (hash-table-ref/default (read-config "megatest.config" \#f \#t) "disks" '"'"'("none" ""))) "\n"))'
(define (common:get-disks #!key (configf #f))
  (hash-table-ref/default 
   (or configf (read-config "megatest.config" #f #t))
   "disks" '("none" "")))

;; return first command that exists, else #f
;;
(define (common:which cmds)
  (if (null? cmds)
      #f
      (let loop ((hed (car cmds))
		 (tal (cdr cmds)))
	(let ((res (with-input-from-pipe (conc "which " hed) read-line)))
	  (if (and (string? res)
		   (common:file-exists? res))
	      res
	      (if (null? tal)
		  #f
		  (loop (car tal)(cdr tal))))))))
  
(define (common:get-install-area)
  (let ((exe-path (car (argv))))
    (if (common:file-exists? exe-path)
	(handle-exceptions
	 exn
	 #f
	 (pathname-directory
	  (pathname-directory 
	   (pathname-directory exe-path))))
	#f)))

;; return first path that can be created or already exists and is writable
;;
(define (common:get-create-writeable-dir dirs)
  (if (null? dirs)
      #f
      (let loop ((hed (car dirs))
		 (tal (cdr dirs)))
	(let ((res (or (and (directory? hed)
			    (file-write-access? hed)
			    hed)
		       (handle-exceptions
			   exn
			   (begin
			     (debug:print-info 0 *default-log-port* "could not create " hed
					       ", this might cause problems down the road. exn=" exn)
			     #f)
			(create-directory hed #t)))))
	  (if (and (string? res)
		   (directory? res))
	      res
	      (if (null? tal)
		  #f
		  (loop (car tal)(cdr tal))))))))

;; return the youngest timestamp . filename
;;
(define (common:get-youngest glob-list)
  (let ((all-files (apply append
			  (map (lambda (patt)
				 (handle-exceptions
				     exn
				     '()
				   (glob patt)))
			       glob-list))))
    (fold (lambda (fname res)
	    (let ((last-mod (car res))
		  (curmod   (handle-exceptions
				exn
				0
			      (file-modification-time fname))))
	      (if (> curmod last-mod)
		  (list curmod fname)
		  res)))
	  '(0 "n/a")
	  all-files)))

;; use bash to expand a glob. Does NOT handle paths with spaces!
;;
(define (common:bash-glob instr)
  (string-split
   (with-input-from-pipe
       (conc "/bin/bash -c \"echo " instr "\"")
       read-line)))

;;======================================================================
;; Some safety net stuff
;;======================================================================

;; return input if it is a list or return null
(define (common:list-or-null inlst #!key (ovrd #f)(message #f))
  (if (list? inlst)
      inlst
      (begin
	(if message (debug:print-error 0 *default-log-port* message))
	(or ovrd '()))))
  
;;======================================================================
;; T A R G E T S  ,   S T A T E ,   S T A T U S ,   
;;                    R U N N A M E    A N D   T E S T P A T T
;;======================================================================

;; (map print (map car (hash-table->alist (read-config "runconfigs.config" #f #t))))
;;
(define (common:get-runconfig-targets #!key (configf #f))
  (let ((targs       (sort (map car (hash-table->alist
				     (or configf ;; NOTE: There is no value in using runconfig:read here.
					 (read-config (conc *toppath* "/runconfigs.config")
						      #f #t)
					 (make-hash-table))))
			   string<?))
	(target-patt (args:get-arg "-target")))
    (if target-patt
	(filter (lambda (x)
		  (patt-list-match x target-patt))
		targs)
	targs)))

;; Lookup a value in runconfigs based on -reqtarg or -target
;; 
(define (runconfigs-get config var)
  (let ((targ (common:args-get-target))) ;; (or (args:get-arg "-reqtarg")(args:get-arg "-target")(getenv "MT_TARGET"))))
    (if targ
	(or (configf:lookup config targ var)
	    (configf:lookup config "default" var))
	(configf:lookup config "default" var))))

(define (common:args-get-state)
  (or (args:get-arg "-state")(args:get-arg ":state")))

(define (common:args-get-status)
  (or (args:get-arg "-status")(args:get-arg ":status")))

(define (common:args-get-testpatt rconf)
  (let* (;; (tagexpr       (args:get-arg "-tagexpr"))
         ;; (tags-testpatt (if tagexpr (string-join (runs:get-tests-matching-tags tagexpr) ",") #f))
         (testpatt-key  (or (args:get-arg "-modepatt") (args:get-arg "--modepatt") "TESTPATT"))
         (args-testpatt (or (args:get-arg "-testpatt") (args:get-arg "-runtests") "%"))
         (rtestpatt     (if rconf (runconfigs-get rconf testpatt-key) #f)))
    (cond
     ((or (args:get-arg "--modepatt") (args:get-arg "-modepatt")) ;; modepatt is a forced setting, when set it MUST refer to an existing PATT in the runconfig
      (if rconf
	  (let* ((patts-from-mode-patt	  (runconfigs-get rconf testpatt-key)))
	    (debug:print-info 0 *default-log-port* "modepatt defined is: "testpatt-key" runconfigs values for  " testpatt-key " "  patts-from-mode-patt)
	    patts-from-mode-patt)
	  (begin
	    (debug:print-info 0 *default-log-port* " modepatt defined is: "testpatt-key" runconfigs values for  " testpatt-key) ;;  " " patts-from-mode-patt)
	    #f)))     ;; We do NOT fall back to "%"
     ;; (tags-testpatt
     ;;  (debug:print-info 0 *default-log-port* "-tagexpr "tagexpr" selects testpatt "tags-testpatt)
     ;;  tags-testpatt)
     ((and (equal? args-testpatt "%") rtestpatt)
      (debug:print-info 0 *default-log-port* "testpatt defined in "testpatt-key" from runconfigs: " rtestpatt)
      rtestpatt)
     (else 
      (debug:print-info 0 *default-log-port* "using testpatt " args-testpatt " rtestpatt:" rtestpatt)
      args-testpatt))))

(define (common:get-linktree)
  (or (getenv "MT_LINKTREE")
      (if *configdat*
	  (configf:lookup *configdat* "setup" "linktree")
	  #f)
      (if (or *toppath* (getenv "MT_RUN_AREA_HOME"))
	  (conc (or *toppath* (getenv "MT_RUN_AREA_HOME")) "/lt")
	  #f)
      (let* ((tp (common:get-toppath #f))
	     (lt (conc tp "/lt")))
	(if (not tp)(debug:print 0 *default-log-port* "WARNING: cannot calculate best path for linktree, using " lt))
	lt)))

(define (common:args-get-runname)
  (let ((res (or (args:get-arg "-runname")
		 (args:get-arg ":runname")
		 (getenv "MT_RUNNAME"))))
    ;; (if res (set-environment-variable "MT_RUNNAME" res)) ;; not sure if this is a good idea. side effect and all ...
    res))

(define (common:get-fields cfgdat)
  (let ((fields (hash-table-ref/default cfgdat "fields" '())))
    (map car fields)))

(define (common:args-get-target #!key (split #f)(exit-if-bad #f))
  (let* ((keys    (if (hash-table? *configdat*) (common:get-fields *configdat*) '()))
	 (numkeys (length keys))
	 (target  (or (args:get-arg "-reqtarg")
		      (args:get-arg "-target")
		      (getenv "MT_TARGET")))
	 (tlist   (if target (string-split target "/" #t) '()))
	 (valid   (if target
		      (or (null? keys) ;; probably don't know our keys yet
			  (and (not (null? tlist))
			       (eq? numkeys (length tlist))
			       (null? (filter string-null? tlist))))
		      #f)))
    (if valid
	(if split
	    tlist
	    target)
	(if target
	    (begin
	      (debug:print-error 0 *default-log-port* "Invalid target, spaces or blanks not allowed \"" target "\", target should be: " (string-intersperse keys "/") ", have " tlist " for elements")
	      (if exit-if-bad (exit 1))
	      #f)
	    #f))))

;; looking only (at least for now) at the MT_ variables craft the full testname
;;
(define (common:get-full-test-name)
  (if (getenv "MT_TEST_NAME")
      (if (and (getenv "MT_ITEMPATH")
               (not (equal? (getenv "MT_ITEMPATH") "")))
          (getenv "MT_TEST_NAME")
          (conc (getenv "MT_TEST_NAME") "/" (getenv "MT_ITEMPATH")))
      #f))

;; logic for getting homehost. Returns (host . at-home)
;; IF *toppath* is not set, wait up to five seconds trying every two seconds
;; (this is to accomodate the watchdog)
;;
(define (common:get-homehost #!key (trynum 5))
  ;; called often especially at start up. use mutex to eliminate collisions
  (mutex-lock! *homehost-mutex*)
  (cond
   (*home-host*
    (mutex-unlock! *homehost-mutex*)
    *home-host*)
   ((not *toppath*)
    (mutex-unlock! *homehost-mutex*)
    (launch:setup) ;; safely mutexed now
    (if (> trynum 0)
	(begin
	  (thread-sleep! 2)
	  (common:get-homehost trynum: (- trynum 1)))
	#f))
   (else
    (let* ((currhost (get-host-name))
	   (bestadrs (server:get-best-guess-address currhost))
	   ;; first look in config, then look in file .homehost, create it if not found
	   (homehost (or (configf:lookup *configdat* "server" "homehost" )
			 (handle-exceptions
			     exn
			     (if (> trynum 0)
				 (let ((delay-time (* (- 5 trynum) 5)))
				   (mutex-unlock! *homehost-mutex*)
				   (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Failed to read .homehost file, delaying "
						delay-time " seconds and trying again, message: "  ((condition-property-accessor 'exn 'message) exn)
						", exn=" exn)
				   (thread-sleep! delay-time)
				   (common:get-homehost trynum: (- trynum 1)))
				 (begin
				   (mutex-unlock! *homehost-mutex*)
				   (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)
						"] Failed to read .homehost file after trying five times. Giving up and exiting, message: "
						((condition-property-accessor 'exn 'message) exn))
				   (exit 1)))
			   (let ((hhf (conc *toppath* "/.homehost")))
			     (if (common:file-exists? hhf)
				 (with-input-from-file hhf read-line)
				 (if (file-write-access? *toppath*)
				     (begin
				       (with-output-to-file hhf
					 (lambda ()
					   (print bestadrs)))
				       (begin
					 (mutex-unlock! *homehost-mutex*)
					 (car (common:get-homehost))))
				     #f))))))
	   (at-home  (or (equal? homehost currhost)
			 (equal? homehost bestadrs))))
      (set! *home-host* (cons homehost at-home))
      (mutex-unlock! *homehost-mutex*)
      *home-host*))))

;; am I on the homehost?
;;
(define (common:on-homehost?)
  (let ((hh (common:get-homehost)))
    (if hh
	(cdr hh)
	#f)))

;; do we honor the caches of the config files?
;;
(define (common:use-cache?)
  (let ((res #t)) ;; priority by order of evaluation
    (if *configdat* ;; sillyness here. can't use setup/use-cache to know if we can use the cached files!
	(if (equal? (configf:lookup *configdat* "setup" "use-cache") "no")
	    (set! res #f)
	    (if (equal? (configf:lookup *configdat* "setup" "use-cache") "yes")
		(set! res #t))))
    (if (args:get-arg "-no-cache")(set! res #f)) ;; overrides setting in "setup"
    (if (getenv "MT_USE_CACHE")
	(if (equal? (getenv "MT_USE_CACHE") "yes")
	    (set! res #t)
	    (if (equal? (getenv "MT_USE_CACHE") "no")
		(set! res #f))))    ;; overrides -no-cache switch
    res))
  
;; force use of server?
;;
(define (common:force-server?)
  (let* ((force-setting (configf:lookup *configdat* "server" "force"))
	 (force-type    (if force-setting (string->symbol force-setting) #f))
	 (force-result  (case force-type
			  ((#f)     #f)
			  ((always) #t)
			  ((test)   (if (args:get-arg "-execute") ;; we are in a test
					#t
					#f))
			  (else
			   (debug:print 0 *default-log-port* "ERROR: Bad server force setting " force-setting ", forcing server.")
			   #t)))) ;; default to requiring server
    (if force-result
	(begin
	  (debug:print-info 0 *default-log-port* "forcing use of server, force setting is \"" force-setting "\".")
	  #t)
	#f)))

;;======================================================================
;; M I S C   L I S T S
;;======================================================================

;; items in lista are matched value and position in listb
;; return the remaining items in listb or #f
;;
(define (common:list-is-sublist lista listb)
  (if (null? lista)
      listb ;; all items in listb are "remaining"
      (if (> (length lista)(length listb)) 
	  #f
	  (let loop ((heda (car lista))
		     (tala (cdr lista))
		     (hedb (car listb))
		     (talb (cdr listb)))
	    (if (equal? heda hedb)
		(if (null? tala) ;; we are done
		    talb
		    (loop (car tala)
			  (cdr tala)
			  (car talb)
			  
			  (cdr talb)))
		#f)))))

;; Needed for long lists to be sorted where (apply max ... ) dies
;;
(define (common:max inlst)
  (let loop ((max-val (car inlst))
	     (hed     (car inlst))
	     (tal     (cdr inlst)))
    (if (not (null? tal))
	(loop (max hed max-val)
	      (car tal)
	      (cdr tal))
	(max hed max-val))))

;; get min or max, use > for max and < for min, this works around the limits on apply
;;
(define (common:min-max comp lst)
  (if (null? lst)
      #f ;; better than an exception for my needs
      (fold (lambda (a b)
	      (if (comp a b) a b))
	    (car lst)
	    lst)))

;; get min or max, use > for max and < for min, this works around the limits on apply
;;
(define (common:sum lst)
  (if (null? lst)
      0
      (fold (lambda (a b)
	      (+ a b))
	    (car lst)
	    lst)))

;; path list to hash-table tree
;;   ((a b c)(a b d)(e b c)) => ((a (b (d) (c))) (e (b (c))))
;;
(define (common:list->htree lst)
  (let ((resh (make-hash-table)))
    (for-each
     (lambda (inlst)
       (let loop ((ht  resh)
		  (hed (car inlst))
		  (tal (cdr inlst)))
	 (if (hash-table-ref/default ht hed #f)
	     (if (not (null? tal))
		 (loop (hash-table-ref ht hed)
		       (car tal)
		       (cdr tal)))
	     (begin
	       (hash-table-set! ht hed (make-hash-table))
	       (loop ht hed tal)))))
     lst)
    resh))

;; hash-table tree to html list tree
;;
;;   tipfunc takes two parameters: y the tip value and path the path to that point
;;
(define (common:htree->html ht path tipfunc)
  (let ((datlist 	(sort (hash-table->alist ht)
                              (lambda (a b)
                                (string< (car a)(car b))))))
    (if (null? datlist)
    	(tipfunc #f path) ;; really shouldn't get here
	(s:ul
	 (map (lambda (x)
		(let* ((levelname (car x))
		       (y         (cdr x))
		       (newpath   (append path (list levelname)))
		       (leaf      (or (not (hash-table? y))
				      (null? (hash-table-keys y)))))
		  (if leaf
		      (s:li (tipfunc y newpath))
		      (s:li
		       (list 
			levelname
			(common:htree->html y newpath tipfunc))))))
	      datlist)))))

;; hash-table tree to alist tree
;;
(define (common:htree->atree ht)
  (map (lambda (x)
	 (cons (car x)
	       (let ((y (cdr x)))
		 (if (hash-table? y)
		     (common:htree->atree y)
		     y))))
       (hash-table->alist ht)))

;;======================================================================
;; M U N G E   D A T A   I N T O   N I C E   F O R M S
;;======================================================================

;; Generate an index for a sparse list of key values
;;   ( (rowname1 colname1 val1)(rowname2 colname2 val2) )
;;
;; => 
;;
;;   ( (rowname1 0)(rowname2 1))    ;; rownames -> num
;;     (colname1 0)(colname2 1)) )  ;; colnames -> num
;; 
;; optional apply proc to rownum colnum value
(define (common:sparse-list-generate-index data #!key (proc #f))
  (if (null? data)
      (list '() '())
      (let loop ((hed (car data))
		 (tal (cdr data))
		 (rownames '())
		 (colnames '())
		 (rownum   0)
		 (colnum   0))
	(let* ((rowkey          (car   hed))
	       (colkey          (cadr  hed))
	       (value           (caddr hed))
	       (existing-rowdat (assoc rowkey rownames))
	       (existing-coldat (assoc colkey colnames))
	       (curr-rownum     (if existing-rowdat rownum (+ rownum 1)))
	       (curr-colnum     (if existing-coldat colnum (+ colnum 1)))
	       (new-rownames    (if existing-rowdat rownames (cons (list rowkey curr-rownum) rownames)))
	       (new-colnames    (if existing-coldat colnames (cons (list colkey curr-colnum) colnames))))
	  ;; (debug:print-info 0 *default-log-port* "Processing record: " hed )
	  (if proc (proc curr-rownum curr-colnum rowkey colkey value))
	  (if (null? tal)
	      (list new-rownames new-colnames)
	      (loop (car tal)
		    (cdr tal)
		    new-rownames
		    new-colnames
		    (if (> curr-rownum rownum) curr-rownum rownum)
		    (if (> curr-colnum colnum) curr-colnum colnum)
		    ))))))

;; if it looks like a number -> convert it to a number, else return it
;;
(define (common:lazy-convert inval)
  (let* ((as-num (if (string? inval)(string->number inval) #f)))
    (or as-num inval)))

;; convert string a=1; b=2; c=a silly thing; d=
;; to '((a . 1)(b . 2)(c . "a silly thing")(d . ""))
;;
(define (common:val->alist val #!key (convert #f))
  (let ((val-list (string-split-fields ";\\s*" val #:infix)))
    (if val-list
	(map (lambda (x)
	       (let ((f (string-split-fields "\\s*=\\s*" x #:infix)))
		 (case (length f)
		   ((0) `(,#f))  ;; null string case
		   ((1) `(,(string->symbol (car f))))
		   ((2) `(,(string->symbol (car f)) . ,(let ((inval (cadr f)))
							 (if convert (common:lazy-convert inval) inval))))
		   (else f))))
	     val-list)
	'())))

;;======================================================================
;; S Y S T E M   S T U F F
;;======================================================================

;; return a nice clean pathname made absolute
(define (common:nice-path dir)
  (let ((match (string-match "^(~[^\\/]*)(\\/.*|)$" dir)))
    (if match ;; using ~ for home?
	(common:nice-path (conc (common:read-link-f (cadr match)) "/" (caddr match)))
	(normalize-pathname (if (absolute-pathname? dir)
				dir
				(conc (current-directory) "/" dir))))))

;; make "nice-path" available in config files and the repl
(define nice-path common:nice-path)

(define (common:read-link-f path)
  (handle-exceptions
      exn
      (begin
	(debug:print-error 0 *default-log-port* "command \"/bin/readlink -f " path "\" failed. exn=" exn)
	path) ;; just give up
    (with-input-from-pipe
	(conc "/bin/readlink -f " path)
      (lambda ()
	(read-line)))))

;; returns *effective load* (not normalized)
;;
(define (common:get-intercept onemin fivemin)
  (if (< onemin fivemin) ;; load is decreasing, just use the onemin load
      onemin
      (let* ((load-change (- onemin fivemin))
	     (tchange     (- 300 60)))
	(max (+ onemin (* 60 (/ load-change tchange))) 0))))

;; calculate a delay number based on a droop curve
;;    inputs are:
;;      - load-in, load as from uptime, NOT normalized
;;      - numcpus, number of cpus, ideally use the real cpus, not threads
;;
(define (common:get-delay load-in numcpus)
  (let* ((ratio (/ load-in numcpus))
         (new-option (configf:lookup *configdat* "load" "new-load-method"))
	 (paramstr   (or (configf:lookup *configdat* "load" "exp-params")
			 "15 12 1281453987.9543 0.75")) ;; 5 4 10 1"))
	 (paramlst   (map string->number (string-split paramstr))))
    (if new-option
	(begin
          (cond ((and (>= ratio 0) (< ratio .5))
		 0)
		((and (>= ratio 0.5) (<= ratio .9))
		 (* ratio (/ 5 .9)))
		((and (> ratio .9) (<= ratio 1.1))
		 (+ 5 (* (- ratio .9) (/ 55 .2)))) 
		((> ratio 1.1)
		 60)))
	(match paramlst
	  ((r1 r2 s1 s2)
	   (debug:print 3 *default-log-port* "Using params r1=" r1 " r2=" r2 " s1=" s1 " s2=" s2)
	   (min (max (/ (expt r1 (* r2 s2 ratio)) s1) 0) 30))
	  (else
	   (debug:print 0 *default-log-port* "BAD exp-params, should be \"r1 r2 s1 s2\" but got " paramstr)
	   30)))))

(define (common:print-delay-table)
  (let loop ((x 0))
    (print x "," (common:get-delay x 1))
    (if (< x 2)
	(loop (+ x 0.1)))))

(define (get-cpu-load #!key (remote-host #f))
  (car (common:get-cpu-load remote-host)))
;;   (let* ((load-res (process:cmd-run->list "uptime"))
;; 	 (load-rx  (regexp "load average:\\s+(\\d+)"))
;; 	 (cpu-load #f))
;;     (for-each (lambda (l)
;; 		(let ((match (string-search load-rx l)))
;; 		  (if match
;; 		      (let ((newval (string->number (cadr match))))
;; 			(if (number? newval)
;; 			    (set! cpu-load newval))))))
;; 	      (car load-res))
;;     cpu-load))

;; get values from cached info from dropping file in logs dir
;;  e.g. key is host and dtype is normalized-load
;;
(define (common:get-cached-info key dtype #!key (age 10))
  (if *toppath*
      (let* ((fullpath (conc *toppath* "/.sysdata/" key "-" dtype ".log"))
	     (delfile  (lambda ()
			 (debug:print-info 1 *default-log-port* " removing bad file " fullpath ", exn=" exn)
			 (delete-file* fullpath)
			 #f)))
	(if (and (file-exists? fullpath)
		 (file-read-access? fullpath))
	    (handle-exceptions
		exn
	      (begin
		(debug:print 0 *default-log-port* "failed to get cached info from " fullpath ", exn=" exn)
		#f)
	     (debug:print 2 *default-log-port* "reading file " fullpath)
	     (let ((real-age (- (current-seconds)
				(handle-exceptions
				    exn
				  (begin
				    (debug:print 1 *default-log-port* "Failed to read mod time on file "
						 fullpath ", using 0, exn=" exn)
				    0)
				  (file-change-time fullpath)))))
	       (if (< real-age age)
		   (handle-exceptions
		       exn
		     (delfile)
		     (let* ((res (with-input-from-file fullpath read)))
		       (if (eof-object? res)
			   (begin
			     (delfile)
			     #f)
			   res)))
		   (begin
		     (debug:print-info 2 *default-log-port* "file " fullpath
				       " is too old (" real-age" seconds) to trust, skipping reading it")
		     #f))))
	    (begin
	      (debug:print 2 *default-log-port* "not reading file " fullpath)
	      #f)))
      #f))
 
(define (common:write-cached-info key dtype dat)
  (if *toppath*
      (let* ((fulldir  (conc *toppath* "/.sysdata"))
	     (fullpath (conc fulldir "/" key "-" dtype ".log")))
	(if (not (file-exists? fulldir))(create-directory fulldir #t))
	(handle-exceptions
	    exn
	  (begin
	    (debug:print 0 *default-log-path* "failed to write file " fullpath ", exn=" exn)
	    #f)
	  (with-output-to-file fullpath (lambda ()(pp dat)))))
      #f))

(define (common:raw-get-remote-host-load remote-host)
  (handle-exceptions
      exn
    (begin
      (debug:print 0 *default-log-port* "failed to ssh to " remote-host " and get loadavg. exn=" exn)
      #f) ;; more specific handling of errors needed
    (with-input-from-pipe 
     (conc "ssh " remote-host " cat /proc/loadavg")
     (lambda ()(list (read)(read)(read))))))

;; get cpu load by reading from /proc/loadavg, return all three values
;;
(define (common:get-cpu-load remote-host)
  (handle-exceptions
      exn
    (begin
      (debug:print 0 *default-log-port* "failed to ssh or read loadavg from host " remote-host ", exn=" exn)
      '(-99 -99 -99))
    (let* ((actual-hostname (or remote-host (get-host-name) "localhost")))
      (or (common:get-cached-info actual-hostname "cpu-load")
	  (let ((result (if remote-host
			    (map (lambda (res)
				   (if (eof-object? res) 9e99 res))
			         (with-input-from-pipe 
				  (conc "ssh " remote-host " cat /proc/loadavg")
				  (lambda ()(list (read)(read)(read)))))
			    (with-input-from-file "/proc/loadavg" 
			      (lambda ()(list (read)(read)(read)))))))
	    (match
		result
	      ((l1 l2 l3)
	       (if (and (number? l1)
		      (number? l2)
		      (number? l3))
		   (begin
		     (common:write-cached-info actual-hostname "cpu-load" result)
		     result)
		   '(-1 -1 -1))) ;; -1 is bad result
	      (else '(-2 -2 -2))))))))

;; get normalized cpu load by reading from /proc/loadavg and /proc/cpuinfo return all three values and the number of real cpus and the number of threads
;; returns alist '((adj-cpu-load . normalized-proc-load) ... etc.
;;  keys: adj-proc-load, adj-core-load, 1m-load, 5m-load, 15m-load
;;
(define (common:get-normalized-cpu-load remote-host)
  (let ((res (common:get-normalized-cpu-load-raw remote-host))
	(default `((adj-proc-load . 2) ;; there is no right answer
		   (adj-core-load . 2)
		   (1m-load       . 2)
		   (5m-load       . 0) ;; causes a large delta - thus causing default of throttling if stuff goes wrong
		   (15m-load      . 0)
		   (proc          . 1)
		   (core          . 1)
		   (phys          . 1)
		   (error         . #t))))
    (cond
     ((and (list? res)
	   (> (length res) 2))
      res)
     ((eq? res #f)   default) ;; add messages?
     ((eq? res #f) default)   ;; this would be the #eof
     (else default))))

(define (common:get-normalized-cpu-load-raw remote-host)
  (let* ((actual-host (or remote-host (get-host-name)))) ;; #f is localhost
    (or (common:get-cached-info actual-host "normalized-load")
	(let ((data (if remote-host
			(with-input-from-pipe 
			    (conc "ssh " remote-host " \"cat /proc/loadavg;cat /proc/cpuinfo;echo end\"")
			  read-lines)
			(append 
			 (with-input-from-file "/proc/loadavg" 
			   read-lines)
			 (with-input-from-file "/proc/cpuinfo"
			   read-lines)
			 (list "end"))))
	      (load-rx  (regexp "^([\\d\\.]+)\\s+([\\d\\.]+)\\s+([\\d\\.]+)\\s+.*$"))
	      (proc-rx  (regexp "^processor\\s+:\\s+(\\d+)\\s*$"))
	      (core-rx  (regexp "^core id\\s+:\\s+(\\d+)\\s*$"))
	      (phys-rx  (regexp "^physical id\\s+:\\s+(\\d+)\\s*$"))
	      (max-num  (lambda (p n)(max (string->number p) n))))
	  ;; (print "data=" data)
	  (if (null? data) ;; something went wrong
	      #f
	      (let loop ((hed      (car data))
			 (tal      (cdr data))
			 (loads    #f)
			 (proc-num 0)  ;; processor includes threads
			 (phys-num 0)  ;; physical chip on motherboard
			 (core-num 0)) ;; core
		;;; (print hed ", " loads ", " proc-num ", " phys-num ", " core-num)
		(if (null? tal) ;; have all our data, calculate normalized load and return result
		    (let* ((act-proc (+ proc-num 1))
			   (act-phys (+ phys-num 1))
			   (act-core (+ core-num 1))
			   (adj-proc-load (/ (car loads) act-proc))
			   (adj-core-load (/ (car loads) act-core))
			   (result
			    (append (list (cons 'adj-proc-load adj-proc-load)
					  (cons 'adj-core-load adj-core-load))
				    (list (cons '1m-load (car loads))
					  (cons '5m-load (cadr loads))
					  (cons '15m-load (caddr loads)))
				    (list (cons 'proc act-proc)
					  (cons 'core act-core)
					  (cons 'phys act-phys)))))
		      (common:write-cached-info actual-host "normalized-load" result)
		      result)
		  (regex-case
		   hed
		   (load-rx  ( x l1 l5 l15 ) (loop (car tal)(cdr tal)(map string->number (list l1 l5 l15)) proc-num phys-num core-num))
		   (proc-rx  ( x p         ) (loop (car tal)(cdr tal) loads           (max-num p proc-num) phys-num core-num))
		   (phys-rx  ( x p         ) (loop (car tal)(cdr tal) loads           proc-num (max-num p phys-num) core-num))
		   (core-rx  ( x c         ) (loop (car tal)(cdr tal) loads           proc-num phys-num (max-num c core-num)))
		   (else 
		    (begin
		      ;; (print "NO MATCH: " hed)
		      (loop (car tal)(cdr tal) loads proc-num phys-num core-num)))))))))))

(define (common:unix-ping hostname)
  (let ((res (system (conc "ping -c 1 " hostname " > /dev/null"))))
    (eq? res 0)))

;; ideally put all this info into the db, no need to preserve it across moving homehost
;;
;; return list of
;;  ( reachable? cpuload update-time )
(define (common:get-host-info hostname)
  (let* ((loadinfo                         (rmt:get-latest-host-load hostname)) ;; if this host happens to have been recently used by a test reuse the load data
         (load                             (car loadinfo))
         (load-sample-time                 (cdr loadinfo))
         (load-sample-age                  (- (current-seconds) load-sample-time))
         (loadinfo-timeout-seconds         6) ;; this was 20 seconds, seems way too lax. Switch to 6 seconds
         (host-last-update-timeout-seconds 4)
         (host-rec (hash-table-ref/default *host-loads* hostname #f))
         )
    (cond
     ((< load-sample-age loadinfo-timeout-seconds)
      (list #t
            load-sample-time
            load))
     ((and host-rec
           (< (current-seconds) (+ (host-last-update host-rec) host-last-update-timeout-seconds)))
      (list #t
            (host-last-update host-rec)
            (host-last-cpuload host-rec )))
     ((common:unix-ping hostname)
      (list #t
            (current-seconds)
            (alist-ref 'adj-core-load (common:get-normalized-cpu-load hostname)))) ;; this is cheaper than you might think. get-normalized-cpu-load is cached for up to 5 seconds
     (else
      (list #f 0 -1) ;; bad host, don't use!
      ))))

;; see defstruct host at top of file.
;;    host: reachable last-update last-used last-cpuload
;;
(define (common:update-host-loads-table hosts-raw)
  (let* ((hosts (filter (lambda (x)
                          (string-match (regexp "^\\S+$") x))
                        hosts-raw)))
    (for-each
     (lambda (hostname)
       (let* ((rec       (let ((h (hash-table-ref/default *host-loads* hostname #f)))
                          (if h
                              h
                              (let ((h (make-host)))
                                (hash-table-set! *host-loads* hostname h)
                                h))))
              (host-info         (common:get-host-info hostname))
              (is-reachable      (car host-info))
              (last-reached-time (cadr host-info))
              (load              (caddr host-info)))
         (host-reachable-set!    rec is-reachable)
         (host-last-update-set!  rec last-reached-time)
         (host-last-cpuload-set! rec load)))
     hosts)))

;; go through the hosts from least recently used to most recently used, pick the first that meets the load criteral from the
;; [host-rules] section.
;;
(define (common:get-least-loaded-host hosts-raw host-type configdat)
  (let* ((rdat       (configf:lookup configdat "host-rules" host-type))
	 (rules      (common:val->alist (or rdat "") convert: #t))   ;; maxnload, maxnjobs, maxjobrate
	 (maxnload   (common:alist-ref/default 'maxnload rules 1.5)) ;; max normalized load
	 (maxnjobs   (common:alist-ref/default 'maxnjobs rules 1.5)) ;; max normalized number of jobs
	 (maxjobrate (common:alist-ref/default 'maxjobrate rules (/ 1 6))) ;; max rate of submitting jobs to a given host in jobs/second
	 (hosts      (filter (lambda (x)
			       (string-match (regexp "^\\S+$") x))
			     hosts-raw))
         ;; (best-host #f)
	 (get-rec    (lambda (hostname)
		       ;; (print "get-rec hostname=" hostname)
		       (let ((h (hash-table-ref/default *host-loads* hostname #f)))
			 (if h
			     h
			     (let ((h (make-host)))
			       (hash-table-set! *host-loads* hostname h)
			       h)))))
         (best-load 99999)
         (curr-time (current-seconds))
	 (get-hosts-sorted (lambda (hosts)
			     (sort hosts (lambda (a b)
					   (let ((a-rec (get-rec a))
						 (b-rec (get-rec b)))
					     ;; (print "a=" a " a-rec=" a-rec " host-last-used=" (host-last-used a-rec))
					     ;; (print "b=" b " b-rec=" b-rec " host-last-used=" (host-last-used b-rec))
					     (< (host-last-used a-rec)
						(host-last-used b-rec))))))))
    (debug:print 0 *default-log-port* "INFO: hosts-sorted=" (get-hosts-sorted hosts))
    (if (null? hosts)
	#f ;; no hosts to select from. All done and giving up now.
	(let ((hosts-sorted (get-hosts-sorted hosts)))
	  (common:update-host-loads-table hosts)
	  (let loop ((hostname  (car hosts-sorted))
		     (tal       (cdr hosts-sorted))
		     (best-host #f))
	    (let* ((rec       (get-rec hostname))
		   (reachable (host-reachable     rec))
		   (load      (host-last-cpuload  rec))
		   (last-used (host-last-used     rec))
		   (delta     (- curr-time last-used))
		   (job-rate  (if (> delta 0)
				  (/ 1 delta)
				  999)) ;; jobs per second
		   (new-best  
		    (cond
		     ((not reachable)
		      (debug:print 0 *default-log-port* "Skipping host " hostname " as it cannot be reached.")
		      best-host)
		     ((and (< load maxnload)        ;; load is acceptable
			   (< job-rate maxjobrate)) ;; job rate is acceptable
		      (set! best-load load)
		      hostname)
		     (else best-host))))
	      (debug:print 0 *default-log-port* "INFO: Trying host " hostname " with load " load ", last used " delta " seconds ago, with job-rate " job-rate " for running a test." )
	      (if new-best
		  (begin ;; found a host, return it
		    (debug:print 0 *default-log-port* "INFO: Found host: " new-best " load: " load " last-used: " delta " seconds ago, with job-rate: " job-rate)
		    (host-last-used-set! rec curr-time)
		    new-best)
		  (if (null? tal) #f (loop (car tal)(cdr tal) best-host)))))))))

(define (common:wait-for-homehost-load maxnormload msg)
  (let* ((hh-dat (if (common:on-homehost?) ;; if we are on the homehost then pass in #f so the calls are local.
                     #f
                     (common:get-homehost)))
         (hh     (if hh-dat (car hh-dat) #f)))
    (common:wait-for-normalized-load maxnormload msg hh)))

(define *numcpus-cache* (make-hash-table))
(define (common:get-num-cpus remote-host)
  (let* ((actual-host (or remote-host (get-host-name))))
    ;; hosts had better not be changing the number of cpus too often!
    (or (hash-table-ref/default *numcpus-cache* actual-host #f)
	(let* ((numcpus (or (common:get-cached-info actual-host "num-cpus" age: (+ 2592000 (random 3600)))
			    (let* ((proc   (lambda ()
					     (let loop ((numcpu 0)
							(inl    (read-line)))
					       (if (eof-object? inl)
						   (if (> numcpu 0)
						       numcpu
						       #f) ;; if zero return #f so caller knows that things are not working
						   (loop (if (string-match "^processor\\s+:\\s+\\d+$" inl)
							     (+ numcpu 1)
							     numcpu)
							 (read-line))))))
				   (result (if remote-host
					       (with-input-from-pipe 
						(conc "ssh " remote-host " cat /proc/cpuinfo")
						proc)
					       (with-input-from-file "/proc/cpuinfo" proc))))
			      (if (and (number? result)
				       (> result 0))
				  (common:write-cached-info actual-host "num-cpus" result))
			      result))))
	  (hash-table-set! *numcpus-cache* actual-host numcpus)
	  numcpus))))

;; wait for normalized cpu load to drop below maxload
;;
(define (common:wait-for-normalized-load maxnormload msg remote-host #!optional (rem-tries 5))
  (let ((num-cpus (common:get-num-cpus remote-host)))
    (if num-cpus
	(common:wait-for-cpuload maxnormload num-cpus 15 msg: msg remote-host: remote-host)
	(begin
	  (thread-sleep! (random 60)) ;; we failed to get num cpus. wait a bit and try again
	  (if (> rem-tries 0)
	      (common:wait-for-normalized-load maxnormload msg remote-host (- rem-tries 1))
	      #f)))))

;; DO NOT CALL THIS DIRECTLY. It is called from common:wait-for-normalized-load
;;   count     - count down to zero, at some point we'd give up if the load never drops
;;   num-tries - count down to zero number tries to get numcpus
;;
(define (common:wait-for-cpuload maxnormload numcpus-in
				 #!key (count 1000)
				 (msg #f)(remote-host #f)(num-tries 5))
  (let* ((loadavg     (common:get-cpu-load remote-host))
	  ;; not possible to have zero.  If we get 1, it's possible that we got the previous default, and we should check again
	 (numcpus     (if (<= 1 numcpus-in)
			  (common:get-num-cpus remote-host)
			  numcpus-in))
	 (first       (car loadavg))
	 (next        (cadr loadavg))
	 (adjmaxload  (* maxnormload (max 1 numcpus))) ;; possible bug
						   ;; where numcpus
						   ;; (or could be
						   ;; maxload) is
						   ;; zero, crude
						   ;; fallback is to
						   ;; at least use 1
	 ;; effective load accounts for load jumps, this should elminate all the first-next-avg, adjwait, load-jump-limit
	 ;; etc.
	 (effective-load    (common:get-intercept first next))
	 (recommended-delay (common:get-delay effective-load numcpus))
	 (effective-host    (or remote-host "localhost"))
	 (normalized-effective-load (/ effective-load numcpus))
	 (will-wait                 (> normalized-effective-load maxnormload)))
    (if (> recommended-delay 0)
	(let* ((actual-delay (min recommended-delay 30)))
	  (if (common:low-noise-print 30 (conc (round actual-delay) "-safe-load"))
	      (debug:print-info 0 *default-log-port* "Load control, delaying "
				actual-delay " seconds to maintain safe load. current normalized effective load is "
				normalized-effective-load"."))
	  (thread-sleep! actual-delay)))
    
    (cond
     ;; bad data, try again to get the data
     ((not will-wait)
      (if (common:low-noise-print 30 (conc (round normalized-effective-load) "-load-acceptable-" effective-host))
	  (debug:print 0 *default-log-port* "Effective load on " effective-host " is acceptable at " effective-load " continuing.")))
     ((and (< first 0) ;; this indicates the loadavg data is bad - machine may not be reachable
	   (> num-tries 0))
      (debug:print 0 *default-log-port* "WARNING: received bad data from get-cpu-load "
		   first ", we'll sleep 10s and try " num-tries " more times.")
      (thread-sleep! 10)
      (common:wait-for-cpuload maxnormload numcpus-in
			       count: count remote-host: remote-host num-tries: (- num-tries 1)))
     ;; need to wait for load to drop
     ((and will-wait ;; (> first adjmaxload)
	   (> count 0))
      (debug:print-info 0 *default-log-port*
			"Delaying 15" ;; adjwait
			" seconds due to normalized effective load " normalized-effective-load ;; first
			" exceeding max of " adjmaxload
			" on server " (or remote-host (get-host-name))
			" (normalized load-limit: " maxnormload ") " (if msg msg ""))
      (thread-sleep! 15) ;; adjwait)
      (common:wait-for-cpuload maxnormload numcpus count: (- count 1) msg: msg remote-host: remote-host)
      ;; put the message here to indicate came out of waiting
      (debug:print-info 1 *default-log-port*
			"On host: " effective-host
			", effective load: " effective-load
			", numcpus: " numcpus
			", normalized effective load: " normalized-effective-load
			))
     ;; overloaded and count expired (i.e. went to zero)
     (else
      (if (> num-tries 0) ;; should be "num-tries-left". 
	  (if (common:low-noise-print 30 (conc (round effective-load) "-load-acceptable-" effective-host))
	      (debug:print 0 *default-log-port* "Load on " effective-host " is acceptable at effective normalized load of "
			   effective-normalized-load "  continuing."))
	  (debug:print 0 *default-log-port* "Load on " effective-host ", "
		       first" could not be retrieved. Giving up and continuing."))))))

;; DO NOT CALL THIS DIRECTLY. It is called from common:wait-for-normalized-load
;;
;; (define (common:wait-for-cpuload maxload-in numcpus-in waitdelay #!key (count 1000) (msg #f)(remote-host #f)(force-maxload #f)(num-tries 5))
;;   (let* ((loadavg (common:get-cpu-load remote-host))
;; 	 (numcpus (if (<= 1 numcpus-in) ;; not possible to have zero.  If we get 1, it's possible that we got the previous default, and we should check again
;; 		      (common:get-num-cpus remote-host)
;; 		      numcpus-in))
;; 	 (maxload (if force-maxload
;; 		      maxload-in
;; 		      (if (number? maxload-in)
;; 			  (max maxload-in 0.5)
;; 			  0.5))) ;; so maxload must be greater than 0.5 for now BUG - FIXME?
;; 	 (first   (car loadavg))
;; 	 (next    (cadr loadavg))
;; 	 (adjmaxload (* maxload (max 1 numcpus))) ;; possible bug where
;; 					       ;; numcpus (or could be
;; 					       ;; maxload) is zero,
;; 					       ;; crude fallback is to
;; 					       ;; at least use 1
;; 	 (loadjmp (- first (if (> next (* numcpus 0.7)) ;; could do something with average of first and next?
;; 			       0
;; 			       next))) ;; we will force a conservative calculation any time next is large.
;; 	 (first-next-avg    (/ (+ first next) 2))
;; 	 ;; add some randomness to the time to break any alignment
;; 	 ;; where netbatch dumps many jobs to machines simultaneously
;;          (adjwait           (min (+ 300 (random 10)) (abs (* (+ (random 10)
;; 								(/ (- 1000 count) 10)
;; 								waitdelay)
;; 							     (- first adjmaxload) ))))
;; 	 (load-jump-limit   (configf:lookup-number *configdat* "setup" "load-jump-limit"))
;; 	 ;; effective load accounts for load jumps, this should elminate all the first-next-avg, adjwait, load-jump-limit
;; 	 ;; etc.
;; 	 (effective-load    (common:get-intercept first next))
;; 	 (effective-host    (or remote-host "localhost"))
;; 	 (normalized-effective-load (/ effective-load numcpus))
;; 	 (will-wait                 (> normalized-effective-load maxload)))
;; 	 
;;     ;; let's let the user know once in a long while that load checking
;;     ;; is happening but not constantly report it
;;     #;(if (common:low-noise-print 30 (conc "cpuload" (or remote-host "localhost"))) ;; (> (random 100) 75) ;; about 25% of the time
;; 	(debug:print-info 1 *default-log-port* "Checking cpuload on " (or remote-host "localhost") ", maxload: " maxload
;;     ", load: " first ", adjmaxload: " adjmaxload ", loadjmp: " loadjmp))
;; 
;;     (debug:print-info 1 *default-log-port*
;; 		      "On host: " effective-host
;; 		      ", effective load: " effective-load
;; 		      ", numcpus: " numcpus
;; 		      ", normalized effective load: " normalized-effective-load
;; 		      )
;;     
;;     (cond
;;      ;; bad data, try again to get the data
;;      ((and (< first 0) ;; this indicates the loadavg data is bad - machine may not be reachable
;; 	   (> num-tries 0))
;;       (debug:print 0 *default-log-port* "WARNING: received bad data from get-cpu-load " first ", we'll sleep 10s and try " num-tries " more times.")
;;       (thread-sleep! 10)
;;       (common:wait-for-cpuload maxload-in numcpus-in waitdelay
;; 			       count: count remote-host: remote-host force-maxload: force-maxload num-tries: (- num-tries 1)))
;;      ;; need to wait for load to drop
;;      ((and will-wait ;; (> first adjmaxload)
;; 	   (> count 0))
;;       (debug:print-info 0 *default-log-port*
;; 			"Delaying " 15 ;; adjwait
;; 			" seconds due to normalized effective load " normalized-effective-load ;; first
;; 			" exceeding max of " adjmaxload
;; 			" on server " (or remote-host (get-host-name))
;; 			" (normalized load-limit: " maxload ") " (if msg msg ""))
;;       (thread-sleep! 15) ;; adjwait)
;;       (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
;;      ((and (> loadjmp (cond
;; 		       (load-jump-limit load-jump-limit)
;; 		       ((> numcpus 8)(/ numcpus 2))
;; 		       ((> numcpus 4)(/ numcpus 1.2))
;; 		       (else 0.5)))
;; 	   (> count 0))
;;       (debug:print-info 0 *default-log-port* "waiting " adjwait " seconds due to possible load jump " loadjmp ". "
;; 			(if msg msg ""))
;;       (thread-sleep! adjwait)
;;       (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
;;      (else
;;       (if (> num-tries 0)
;; 	  (if (common:low-noise-print 30 (conc (round first) "-load-acceptable-" (or remote-host "localhost")))
;; 	      (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") " is acceptable at " first " continuing."))
;; 	  (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") ", "first" could not be retrieved. Giving up and continuing."))))))
;; 
(define (get-uname . params)
  (let* ((uname-res (process:cmd-run->list (conc "uname " (if (null? params) "-a" (car params)))))
	 (uname #f))
    (if (null? (car uname-res))
	"unknown"
	(caar uname-res))))

;; for reasons I don't understand multiple calls to real-path in parallel threads
;; must be protected by mutexes
;;
(define (common:real-path inpath)
  ;; (process:cmd-run-with-stderr->list "readlink" "-f" inpath)) ;; cmd . params)
  ;; (let-values 
  ;;  (((inp oup pid) (process "readlink" (list "-f" inpath))))
  ;;  (with-input-from-port inp
  ;;    (let loop ((inl (read-line))
  ;;       	(res #f))
  ;;      (print "inl=" inl)
  ;;      (if (eof-object? inl)
  ;;          (begin
  ;;            (close-input-port inp)
  ;;            (close-output-port oup)
  ;;            ;; (process-wait pid)
  ;;            res)
  ;;          (loop (read-line) inl))))))
  (with-input-from-pipe (conc "readlink -f " inpath) read-line))

;;======================================================================
;; D I S K   S P A C E 
;;======================================================================

(define (common:get-disk-space-used fpath)
  (with-input-from-pipe (conc "/usr/bin/du -s " fpath) read))

;; given path get free space, allows override in [setup]
;; with free-space-script /path/to/some/script.sh
;;
(define (get-df path)
  (if (configf:lookup *configdat* "setup" "free-space-script")
      (with-input-from-pipe 
       (conc (configf:lookup *configdat* "setup" "free-space-script") " " path)
       (lambda ()
	 (let ((res (read-line)))
	   (if (string? res)
	       (string->number res)))))
      (get-unix-df path)))

(define (get-free-inodes path)
  (if (configf:lookup *configdat* "setup" "free-inodes-script")
      (with-input-from-pipe 
	  (conc (configf:lookup *configdat* "setup" "free-inodes-script") " " path)
	(lambda ()
	  (let ((res (read-line)))
	    (if (string? res)
		(string->number res)))))
      (get-unix-inodes path)))

(define (get-unix-df path)
  (let* ((df-results (process:cmd-run->list (conc "df " path)))
	 (space-rx   (regexp "([0-9]+)\\s+([0-9]+)%"))
	 (freespc    #f))
    ;; (write df-results)
    (for-each (lambda (l)
		(let ((match (string-search space-rx l)))
		  (if match 
		      (let ((newval (string->number (cadr match))))
			(if (number? newval)
			    (set! freespc newval))))))
	      (car df-results))
    freespc))

(define (get-unix-inodes path)
  (let* ((df-results (process:cmd-run->list (conc "df -i " path)))
	 (space-rx   (regexp "([0-9]+)\\s+([0-9]+)%"))
	 (freenodes    0)) ;; 0 is a better failsafe than #f here.
    ;; (write df-results)
    (for-each (lambda (l)
		(let ((match (string-search space-rx l)))
		  (if match 
		      (let ((newval (string->number (cadr match))))
			(if (number? newval)
			    (set! freenodes newval))))))
	      (car df-results))
    freenodes))

(define (common:check-space-in-dir dirpath required)
  (let* ((dbspace  (if (directory? dirpath)
		       (get-df dirpath)
		       0)))
    (list (> dbspace required)
	  dbspace
	  required
	  dirpath)))

;; check space in dbdir and in megatest dir
;; returns: ok/not dbspace required-space
;;
(define (common:check-db-dir-space)
  (let* ((required (string->number 
                    ;; default is 1GB (or actually a billion bytes) This is the number of 1 kB blocks.
		    (or (configf:lookup *configdat* "setup" "dbdir-space-required")
			"1000000")))
	 (dbdir    (common:get-db-tmp-area)) ;; (db:get-dbdir))
	 (tdbspace (common:check-space-in-dir dbdir required))
	 (mdbspace (common:check-space-in-dir *toppath* required)))
    (sort (list tdbspace mdbspace) (lambda (a b)
				     (< (cadr a)(cadr b))))))
    
;; check available space in dbdir, exit if insufficient
;;
(define (common:check-db-dir-and-exit-if-insufficient)
  (let* ((spacedat (car (common:check-db-dir-space))) ;; look only at worst for now
	 (is-ok    (car spacedat))
	 (dbspace  (cadr spacedat))
	 (required (caddr spacedat))
	 (dbdir    (cadddr spacedat)))
    (if (not is-ok)
	(begin
	  (debug:print-error 0 *default-log-port* "Insufficient space in " dbdir ", require " required ", have " dbspace  ", exiting now.")
	  (exit 1)))))
  
;; paths is list of lists ((name path) ... )
;;
(define (common:get-disk-with-most-free-space disks minsize)
  (let* ((best     #f)
	(bestsize 0)
        (default-min-inodes-string "1000000")
        (default-min-inodes (string->number default-min-inodes-string))
        (min-inodes (or (string->number (if (configf:lookup *configdat* "setup" "min_inodes") (configf:lookup *configdat* "setup" "min_inodes") default-min-inodes-string)) default-min-inodes)))

    (for-each 
     (lambda (disk-num)
       (let* ((dirpath    (cadr (assoc disk-num disks)))
	      (freespc    (cond
			   ((not (directory? dirpath))
			    (if (common:low-noise-print 300 "disks not a dir " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a directory - ignoring it."))
			    -1)
			   ((not (file-write-access? dirpath))
			    (if (common:low-noise-print 300 "disks not writeable " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not writeable - ignoring it."))
			    -1)
			   ((not (eq? (string-ref dirpath 0) #\/))
			    (if (common:low-noise-print 300 "disks not a proper path " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a fully qualified path - ignoring it."))
			    -1)
			   (else
			    (get-df dirpath))))
	      (free-inodes (cond
			   ((not (directory? dirpath))
			    (if (common:low-noise-print 300 "disks not a dir " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a directory - ignoring it."))
			    -1)
			   ((not (file-write-access? dirpath))
			    (if (common:low-noise-print 300 "disks not writeable " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not writeable - ignoring it."))
			    -1)
			   ((not (eq? (string-ref dirpath 0) #\/))
			    (if (common:low-noise-print 300 "disks not a proper path " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a fully qualified path - ignoring it."))
			    -1)
			   (else
			    (get-free-inodes dirpath))))
             ;;(free-inodes (get-free-inodes dirpath))
             )
             (debug:print 2 *default-log-port* "INFO: disk " disk-num " path " dirpath " free space " freespc " free inodes " free-inodes)
	 (if (and (> freespc bestsize)(> free-inodes min-inodes ))
	     (begin
	       (set! best     (cons disk-num dirpath))
	       (set! bestsize freespc)))
        ;;(print "Processing: " disk-num " bestsize: " bestsize " best: " best " freespc: " freespc " min-inodes: " min-inodes " free-inodes: " free-inodes)
      ))
     (map car disks))
    (if (and best (> bestsize minsize))
	best
	#f))) ;; #f means no disk candidate found

;; convert a spec string to a list of vectors #( rx  action rx-string )
(define (common:spec-string->list-of-specs spec-string actions)
  (let ((spec-strings  (string-split-fields "\\s*;\\s*" spec-string #:infix))
	(actions-regex (regexp (conc "^(.*)\\s+(" (string-intersperse (map conc actions) "|") ")"))))
    (filter
     (lambda (x) x)
     (map (lambda (s)
	    (let ((m (string-match actions-regex s)))
	      (if m
		  (vector (regexp (cadr m))(string->symbol (caddr m))(cadr m))
		  (begin
		    (debug:print 0 *default-log-port* "WARNING: Unrecognised rule \"" s "\" in clean-up specification.")
		    #f))))
	  spec-strings))))
  
;; given a list of specs rx . rule and a file return the first matching rule
;; 
(define (common:file-find-rule fname rules) ;; rule is vector #( rx action rx-string)
  (let loop ((rule   (car rules))
	     (tail   (cdr rules)))
    (let ((rx (vector-ref rule 0))
	  (rn (vector-ref rule 1))) ;; rule name
      (if (string-match rx fname)
	  rule ;; return the whole rule so regex can be printed etc.
	  (if (null? tail)
	      #f
	      (loop (car tail)(cdr tail)))))))

;; given a spec apply some rules to a directory
;;
;;  WARNING: This function will REMOVE files - be sure your spec and path is correct!
;;
;; spec format:
;;   file-regex1 action; file-regex2 action; ...
;; e.g.
;;   .*\.log$ keep; .* remove
;;   --> keep all .log files, remove everything else
;; limitations:
;;   cannot have a rule with ; as part of the spec
;;   not very flexible, would be nice to return binned file names?
;; supported rules:
;;   keep     - keep this file
;;   remove   - remove this file
;;   compress - compress this file
;;
(define (common:dir-clean-up path spec-string #!key (compress "gzip")(actions '(keep remove compress))(remove-empty #f))
  (let* ((specs         (common:spec-string->list-of-specs spec-string actions))
	 (keepers       (make-hash-table))
	 (directories   (make-hash-table)))
    (find-files 
     path
     action: (lambda (p res)
	       (let ((rule  (common:file-find-rule p specs)))
		 (cond
		  ((directory? p)(hash-table-set! directories p #t))
		  (else
		   (case (vector-ref rule 1)
		     ((keep)(hash-table-set! keepers p rule))
		     ((remove)
		      (print "Removing file " p)
		      (delete-file p))
		     ((compress)
		      (print "Compressing file " p)
		      (system (conc compress " " p)))
		     (else
		      (print "No match for file " p))))))))
    (if remove-empty
	(for-each
	 (lambda (d)
	   (if (null? (glob (conc d "/.*")(conc d "/*")))
	       (begin
		 (print "Removing empty directory " d)
		 (delete-directory d))))
	 (sort (hash-table-keys directories) (lambda (a b)(> (string-length a)(string-length b))))))
    ))

;;======================================================================
;; E N V I R O N M E N T   V A R S
;;======================================================================
(define (bb-check-path #!key (msg "check-path: "))
  (let ((path (or (get-environment-variable "PATH") "none")))
    (debug:print-info 0 *default-log-port* (conc msg" : $PATH="path))
    (if (string-match "^.*/isoenv-core/.*" path)
        (debug:print-error 0 *default-log-port* (conc msg" : !!ISOENV PRESENT!!")) ;; remove for prod
        (debug:print-info 1 *default-log-port* (conc msg" : **no isoenv present**")))))

	      
(define (save-environment-as-files fname #!key (ignorevars (list "USER" "HOME" "DISPLAY" "LS_COLORS" "XKEYSYMDB" "EDITOR" "MAKEFLAGS" "MAKEF" "MAKEOVERRIDES")))
  ;;(bb-check-path msg: "save-environment-as-files entry")
  (let ((envvars (get-environment-variables))
        (whitesp (regexp "[^a-zA-Z0-9_\\-:,\\.\\/%$]"))
	(mungeval (lambda (val)
		    (cond
		     ((eq? val #t) "") ;; convert #t to empty string
		     ((eq? val #f) #f) ;; convert #f to itself (still thinking about this one
		     (else val)))))
    (with-output-to-file (conc fname ".csh")
       (lambda ()
          (for-each (lambda (keyval)
		      (let* ((key   (car keyval))
			     (val   (cdr keyval))
			     (delim (if (string-search whitesp val) 
					"\""
					"")))
			(print (if (or (member key ignorevars)
				       (string-search whitesp key))
				   "# setenv "
				   "setenv ")
			       key " " delim (mungeval val) delim)))
		    envvars)))
     (with-output-to-file (conc fname ".sh")
       (lambda ()
          (for-each (lambda (keyval)
		      (let* ((key (car keyval))
			     (val (cdr keyval))
			     (delim (if (string-search whitesp val) 
					"\""
					"")))
			(print (if (or (member key ignorevars)
				       (string-search whitesp key)
				       (string-search ":" key)) ;; internal only values to be skipped.
				   "# export "
				   "export ")
			       key "=" delim (mungeval val) delim)))
                    envvars)))))


(define (common:get-param-mapping #!key (flavor #f))
  "returns alist mapping string keys in testconfig/subrun to megatest command line switches; if flavor is switch-symbol, maps tcmt symbolic switches to megatest switches"
  (let ((default '(("tag-expr"  . "-tagexpr")
                   ("mode-patt" . "-modepatt")
                   ("run-name"  . "-runname")
                   ("contour"   . "-contour")
                   ("target"    . "-target")
                   ("test-patt" . "-testpatt")
                   ("msg"       . "-m")
                   ("log"       . "-log")
                   ("start-dir" . "-start-dir")
                   ("new"       . "-set-state-status"))))
    (if (eq? flavor 'switch-symbol)
        (map (lambda (x)
               (cons (string->symbol (conc "-" (car x))) (cdr x)))
             default)
        default)))

;; set some env vars from an alist, return an alist with original values
;; (("VAR" "value") ...)
;; a value of #f means "unset this var"
;;
(define (alist->env-vars lst)
  (if (list? lst)
      (let ((res '()))
	(for-each (lambda (p)
		    (let* ((var (car  p))
			   (val (cadr p))
			   (prv (get-environment-variable var)))
		      (set! res (cons (list var prv) res))
		      (if val 
			  (safe-setenv var (->string val))
			  (unsetenv var))))
		  lst)
	res)
      '()))


;; clear vars matching pattern, run proc, set vars back
;; if proc is a string run that string as a command with
;; system.
;;
(define *common:orig-env*
  (let ((envvars (get-environment-variables)))
    (if (get-environment-variable "MT_ORIG_ENV")
        (with-input-from-string
            (z3:decode-buffer (base64:base64-decode (get-environment-variable "MT_ORIG_ENV")))
          read)
        (filter-map (lambda (x)
                      (if (string-match "^MT_.*" (car x))
                          #f
                          x))
                    envvars))))

(define (common:with-orig-env proc)
  (let  ((current-env (get-environment-variables)))
    (for-each (lambda (x) (unsetenv (car x)))             current-env)
    (for-each (lambda (x) (setenv (car x) (cdr x))) *common:orig-env*)
    (let ((rv (cond
               ((string? proc)(system proc))
               (proc          (proc)))))
      (for-each (lambda (x) (unsetenv (car x))) *common:orig-env*)
      (for-each (lambda (x) (setenv (car x) (cdr x))) current-env)
      rv)))

(define (common:without-vars proc . var-patts)
  (let ((vars (make-hash-table)))
    (for-each
     (lambda (vardat) ;; each env var
       (for-each
	(lambda (var-patt)
	  (if (string-match var-patt (car vardat))
	      (let ((var (car vardat))
		    (val (cdr vardat)))
		(hash-table-set! vars var val)
		(unsetenv var))))
	var-patts))
     (get-environment-variables))
    (cond
     ((string? proc)(system proc))
     (proc          (proc)))
    (hash-table-for-each
     vars
     (lambda (var val)
       (setenv var val)))
    vars))


(define (common:run-a-command cmd #!key (with-vars #f) (with-orig-env #f))
  (let* ((pre-cmd  (dtests:get-pre-command))
         (post-cmd (dtests:get-post-command))
         (fullcmd  (if (or pre-cmd post-cmd)
                       (conc pre-cmd cmd post-cmd)
                       (conc "viewscreen " cmd))))
    (debug:print-info 02 *default-log-port* "Running command: " fullcmd)
    (cond
     (with-vars     (common:without-vars  fullcmd))
     (with-orig-env (common:with-orig-env fullcmd))
     (else          (common:without-vars  fullcmd "MT_.*")))))
		  
;;======================================================================
;; C O L O R S
;;======================================================================
      
(define (common:name->iup-color name)
  (case (string->symbol (string-downcase name))
    ((red)    "223 33 49")
    ((grey)   "192 192 192")
    ((orange) "255 172 13")
    ((purple) "This is unfinished ...")))

;; (define (common:get-color-for-state-status state status)
;;   (case (string->symbol state)
;;     ((COMPLETED)
;;      (case (string->symbol status)
;;        ((PASS)        "70  249 73")
;;        ((WARN WAIVED) "255 172 13")
;;        ((SKIP)        "230 230 0")
;;        (else "223 33 49")))
;;     ((LAUNCHED)         "101 123 142")
;;     ((CHECK)            "255 100 50")
;;     ((REMOTEHOSTSTART)  "50  130 195")
;;     ((RUNNING)          "9   131 232")
;;     ((KILLREQ)          "39  82  206")
;;     ((KILLED)           "234 101 17")
;;     ((NOT_STARTED)      "240 240 240")
;;     (else               "192 192 192")))

(define (common:iup-color->rgb-hex instr)
  (string-intersperse 
   (map (lambda (x)
          (number->string x 16))
        (map string->number
             (string-split instr)))
   "/"))

;;======================================================================
;; L O C K I N G   M E C H A N I S M S 
;;======================================================================

;; faux-lock is deprecated. Please use simple-lock below
;;
(define (common:faux-lock keyname #!key (wait-time 8)(allow-lock-steal #t))
  (if (rmt:no-sync-get/default keyname #f) ;; do not be tempted to compare to pid. locking is a one-shot action, if already locked for this pid it doesn't actually count
      (if (> wait-time 0)
	  (begin
	    (thread-sleep! 1)
	    (if (eq? wait-time 1) ;; only one second left, steal the lock
		(begin
		  (debug:print-info 0 *default-log-port* "stealing lock for " keyname)
		  (common:faux-unlock keyname force: #t)))
	    (common:faux-lock keyname wait-time: (- wait-time 1)))
	  #f)
      (begin
        (rmt:no-sync-set keyname (conc (current-process-id)))
        (equal? (conc (current-process-id)) (conc (rmt:no-sync-get/default keyname #f))))))

(define (common:faux-unlock keyname #!key (force #f))
  (if (or force (equal? (conc (current-process-id)) (conc (rmt:no-sync-get/default keyname #f))))
      (begin
        (if (rmt:no-sync-get/default keyname #f) (rmt:no-sync-del! keyname))
        #t)
      #f))

;; simple lock. improve and converge on this one.
;;
(define (common:simple-lock keyname)
  (rmt:no-sync-get-lock keyname))

(define (common:simple-unlock keyname #!key (force #f))
  (rmt:no-sync-del! keyname))


;;======================================================================
;;
;;======================================================================

(define (common:in-running-test?)
  (and (args:get-arg "-execute") (get-environment-variable "MT_CMDINFO")))

(define (common:get-color-from-status status)
  (cond
   ((equal? status "PASS")    "green")
   ((equal? status "FAIL")    "red")
   ((equal? status "WARN")    "orange")
   ((equal? status "KILLED")  "orange")
   ((equal? status "KILLREQ") "purple")
   ((equal? status "RUNNING") "blue")
   ((equal? status "ABORT")   "brown")
   (else "black")))

;; ;;======================================================================
;; ;; N A N O M S G   C L I E N T
;; ;;======================================================================
;; 
;; 
;; 
;; (define (common:send-dboard-main-changed)
;;   (let* ((dashboard-ips (mddb:get-dashboards)))
;;     (for-each
;;      (lambda (ipadr)
;;        (let* ((soc (common:open-nm-req (conc "tcp://" ipadr)))
;; 	      (msg (conc "main " *toppath*))
;; 	      (res (common:nm-send-receive-timeout soc msg)))
;; 	 (if (not res) ;; couldn't reach that dashboard - remove it from db
;; 	     (print "ERROR: couldn't reach dashboard " ipadr))
;; 	 res))
;;      dashboard-ips)))
;;     
;;     
;; ;;======================================================================
;; ;; D A S H B O A R D   D B 
;; ;;======================================================================
;; 
;; (define (mddb:open-db)
;;   (let* ((db (open-database (conc (get-environment-variable "HOME") "/.dashboard.db"))))
;;     (set-busy-handler! db (busy-timeout 10000))
;;     (for-each
;;      (lambda (qry)
;;        (exec (sql db qry)))
;;      (list 
;;       "CREATE TABLE IF NOT EXISTS vars       (id INTEGER PRIMARY KEY,key TEXT, val TEXT, CONSTRAINT varsconstraint UNIQUE (key));"
;;       "CREATE TABLE IF NOT EXISTS dashboards (
;;           id         INTEGER PRIMARY KEY,
;;           pid        INTEGER,
;;           username   TEXT,
;;           hostname   TEXT,
;;           ipaddr     TEXT,
;;           portnum    INTEGER,
;;           start_time TIMESTAMP DEFAULT (strftime('%s','now')),
;;              CONSTRAINT hostport UNIQUE (hostname,portnum)
;;         );"
;;       ))
;;     db))
;; 
;; ;; register a dashboard 
;; ;;
;; (define (mddb:register-dashboard port)
;;   (let* ((pid      (current-process-id))
;; 	 (hostname (get-host-name))
;; 	 (ipaddr   (server:get-best-guess-address hostname))
;; 	 (username (current-user-name)) ;; (car userinfo)))
;; 	 (db      (mddb:open-db)))
;;     (print "Register monitor, pid: " pid ", hostname: " hostname ", port: " port ", username: " username)
;;     (exec (sql db "INSERT OR REPLACE INTO dashboards (pid,username,hostname,ipaddr,portnum) VALUES (?,?,?,?,?);")
;; 	   pid username hostname ipaddr port)
;;     (close-database db)))
;; 
;; ;; unregister a monitor
;; ;;
;; (define (mddb:unregister-dashboard host port)
;;   (let* ((db      (mddb:open-db)))
;;     (print "Register unregister monitor, host:port=" host ":" port)
;;     (exec (sql db "DELETE FROM dashboards WHERE hostname=? AND portnum=?;") host port)
;;     (close-database db)))
;; 
;; ;; get registered dashboards
;; ;;
;; (define (mddb:get-dashboards)
;;   (let ((db (mddb:open-db)))
;;     (query fetch-column
;; 	   (sql db "SELECT ipaddr || ':' || portnum FROM dashboards;"))))
    
;;======================================================================
;;  T E S T   L A U N C H I N G   P E R   I T E M   W I T H   H O S T   T Y P E S
;;======================================================================
;; 
;; [hosts]
;; arm cubie01 cubie02
;; x86_64 zeus xena myth01
;; allhosts #{g hosts arm} #{g hosts x86_64}
;; 
;; [host-types]
;; general #MTLOWESTLOAD #{g hosts allhosts}
;; arm     #MTLOWESTLOAD #{g hosts arm}
;; nbgeneral nbjob run JOBCOMMAND -log $MT_LINKTREE/$MT_TARGET/$MT_RUNNAME.$MT_TESTNAME-$MT_ITEM_PATH.lgo
;;
;; [host-rules]
;; # maxnload   => max normalized load
;; # maxnjobs   => max jobs per cpu
;; # maxjobrate => max jobs per second
;; general maxnload=1.1; maxnjobs=1.2; maxjobrate=0.1 
;; 
;; [launchers]
;; envsetup general
;; xor/%/n 4C16G
;; % nbgeneral
;; 
;; [jobtools]
;; # if defined and not "no" flexi-launcher will bypass "launcher" unless no match.
;; flexi-launcher yes  
;; launcher nbfake
;;
(define (common:get-launcher configdat testname itempath)
  (let ((fallback-launcher (configf:lookup configdat "jobtools" "launcher")))
    (if (and (configf:lookup configdat "jobtools" "flexi-launcher") ;; overrides launcher
	     (not (equal? (configf:lookup configdat "jobtools" "flexi-launcher") "no")))
	(let* ((launchers         (hash-table-ref/default configdat "launchers" '())))
	  (if (null? launchers)
	      fallback-launcher
	      (let loop ((hed (car launchers))
			 (tal (cdr launchers)))
		(let ((patt      (car hed))
		      (host-type (cadr hed)))
		  (if (tests:match patt testname itempath)
		      (begin
			(debug:print-info 2 *default-log-port* "Have flexi-launcher match for " testname "/" itempath " = " host-type)
			(let ((launcher (configf:lookup configdat "host-types" host-type)))
			  (if launcher
			      (let* ((launcher-parts (string-split launcher))
				     (launcher-exe   (car launcher-parts)))
				(if (equal? launcher-exe "#MTLOWESTLOAD") ;; this is our special case, we will find the lowest load and craft a nbfake commandline
				    (let host-loop ((targ-host (common:get-least-loaded-host (cdr launcher-parts) host-type configdat))
						    (count     100))
				      (if targ-host
					  (conc "remrun " targ-host)
					  (if (> count 0)
					      (begin
						(debug:print 0 *default-log-port* "INFO: Waiting for a host for host-type " host-type)
						(thread-sleep! (- 101 count))
						(host-loop (common:get-least-loaded-host (cdr launcher-parts) host-type configdat)
							   (- count 1)))
					      (begin
						(debug:print 0 *default-log-port* "FATAL: Failed to find a host from #MTLOWESTLOAD for host-type " host-type)
						(exit)))))
				    launcher))
			      (begin
				(debug:print-info 0 *default-log-port* "WARNING: no launcher found for host-type " host-type)
				(if (null? tal)
				    fallback-launcher
				    (loop (car tal)(cdr tal)))))))
		      ;; no match, try again
		      (if (null? tal)
			  fallback-launcher
			  (loop (car tal)(cdr tal))))))))
	fallback-launcher)))

;;======================================================================
;; NMSG AND NEW API
;;======================================================================

;; nm based server experiment, keep around for now.
;;
(define (nm:start-server dbconn #!key (given-host-name #f))
  (let* ((srvdat    (start-raw-server given-host-name: given-host-name))
	 (host-name (srvdat-host srvdat))
	 (soc       (srvdat-soc srvdat)))
    
    ;; start the queue processor (save for second round of development)
    ;;
    (thread-start! (make-thread! (lambda ()(queue-processor dbconn) "Queue processor")))
    ;; msg is an alist
    ;;  'r host:port  <== where to return the data
    ;;  'p params     <== data to apply the command to
    ;;  'e j|s|l      <== encoding of the params. default is s (sexp), if not specified is assumed to be default
    ;;  'c command    <== look up the function to call using this key
    ;;
    (let loop ((msg-in (nn-recv soc)))
      (if (not (equal? msg-in "quit"))
	  (let* ((dat        (decode msg-in))
		 (host-port  (alist-ref 'r dat)) ;; this is for the reverse req rep where the server is a client of the original client
		 (params     (alist-ref 'p dat))
		 (command    (let ((c (alist-ref 'c dat)))(if c (string->symbol c) #f)))
		 (all-good   (and host-port params command (hash-table-exists? *commands* command))))
	    (if all-good
		(let ((cmddat (make-qitem
			       command:   command
			       host-port: host-port
			       params:    params)))
		  (queue-push cmddat) 		;; put request into the queue
		  (nn-send soc "queued"))         ;; reply with "queued"
		(print "ERROR: ["(common:human-time)"] BAD request " dat))
	    (loop (nn-recv soc)))))
    (nn-close soc)))

;;======================================================================
;; D A S H B O A R D   U S E R   V I E W S
;;======================================================================

;; first read ~/views.config if it exists, then read $MTRAH/views.config if it exists
;;
(define (common:load-views-config)
  (let* ((view-cfgdat    (make-hash-table))
	 (home-cfgfile   (conc (get-environment-variable "HOME") "/.mtviews.config"))
	 (mthome-cfgfile (conc *toppath* "/.mtviews.config")))
    (if (common:file-exists? mthome-cfgfile)
	(read-config mthome-cfgfile view-cfgdat #t))
    ;; we load the home dir file AFTER the MTRAH file so the user can clobber settings when running the dashboard in read-only areas
    (if (common:file-exists? home-cfgfile)
	(read-config home-cfgfile view-cfgdat #t))
    view-cfgdat))

;;======================================================================
;; H I E R A R C H I C A L   H A S H   T A B L E S
;;======================================================================

;; Every element including top element is a vector:
;;   <vector subhash value>

(define (hh:make-hh #!key (ht #f)(value #f))
  (vector (or ht    (make-hash-table)) value))

;; used internally
(define-inline (hh:set-ht! hh ht)       (vector-set! hh 0 ht))
(define-inline (hh:get-ht hh)           (vector-ref  hh 0))
(define-inline (hh:set-value! hh value) (vector-set! hh 1 value))
(define-inline (hh:get-value  hh value) (vector-ref  hh 1))

;; given a hierarchial hash and some keys look up the value ...
;;
(define (hh:get hh . keys)
  (if (null? keys)
      (vector-ref hh 1) ;; we have reached the end of the line, return the value sought
      (let ((sub-ht (hh:get-ht hh)))
	(if sub-ht ;; yes, there is more hierarchy
	    (let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
	      (if sub-hh
		  (apply hh:get sub-hh (cdr keys))
		  #f))
	    #f))))

;; given a hierarchial hash, a value and some keys, add needed hierarcy and insert the value
;;
(define (hh:set! hh value . keys)
  (if (null? keys)
      (hh:set-value! hh value) ;; we have reached the end of the line, store the value
      (let ((sub-ht (hh:get-ht hh)))
	(if sub-ht ;; yes, there is more hierarchy
	    (let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
	      (if (not sub-hh) ;; we'll need to add the next level of hierarchy
		  (let ((new-sub-hh (hh:make-hh)))
		    (hash-table-set! sub-ht (car keys) new-sub-hh)
		    (apply hh:set! new-sub-hh value (cdr keys)))
		  (apply hh:set! sub-hh value (cdr keys))))    ;; call the sub-hierhash with remaining keys
	    (begin
	      (hh:set-ht! hh (make-hash-table))
	      (apply hh:set! hh value keys))))))
  
;; Manage pkts, used in servers, tests and likely other contexts so put
;; in common
;;======================================================================

(define common:pkts-spec
  '((default . ((parent    . P)
                (action    . a)
                (filename  . f)))
    (configf . ((parent    . P)
                (action    . a)
                (filename  . f)))
    (server  . ((action    . a)
		(pid       . d)
		(ipaddr    . i)
		(port      . p)
		(parent    . P)))
    			  
    (test    . ((cpuuse    . c)
		(diskuse   . d)
		(item-path . i)
		(runname   . r)
		(state     . s)
		(target    . t)
		(status    . u)
		(parent    . P)))))

(define (common:get-pkts-dirs mtconf use-lt)
  (let* ((pktsdirs-str (or (configf:lookup mtconf "setup"  "pktsdirs")
			   (and use-lt
				(conc (or *toppath*
					  (current-directory))
				      "/lt/.pkts"))))
	 (pktsdirs  (if pktsdirs-str
			(string-split pktsdirs-str " ")
			#f)))
    pktsdirs))

;; use-lt is use linktree "lt" link to find pkts dir
(define (common:save-pkt pktalist-in mtconf use-lt #!key (add-only #f)) ;; add-only saves the pkt only if there is a parent already
  (if (or add-only
	  (hash-table-exists? *pkts-info* 'last-parent))
      (let* ((parent   (hash-table-ref/default *pkts-info* 'last-parent #f))
	     (pktalist (if parent
			   (cons `(parent . ,parent)
				 pktalist-in)
			   pktalist-in)))
	(let-values (((uuid pkt)
		      (alist->pkt pktalist common:pkts-spec)))
	  (hash-table-set! *pkts-info* 'last-parent uuid)
	  (let ((pktsdir (or (hash-table-ref/default *pkts-info* 'pkts-dir #f)
			     (let* ((pktsdirs (common:get-pkts-dirs mtconf use-lt))
				    (pktsdir   (car pktsdirs))) ;; assume it is there
			       (hash-table-set! *pkts-info* 'pkts-dir pktsdir)
			       pktsdir))))
            (handle-exceptions
             exn
             (debug:print-info 0 "failed to write out packet to " pktsdir ", exn=" exn) ;; don't care if this failed for now but MUST FIX - BUG!!
             (if (not (file-exists? pktsdir))
                 (create-directory pktsdir #t))
             (with-output-to-file
                 (conc pktsdir "/" uuid ".pkt")
               (lambda ()
                 (print pkt)))))))))
	
(define (common:with-queue-db mtconf proc #!key (use-lt #f)(toppath-in #f))
  (let* ((pktsdirs (common:get-pkts-dirs mtconf use-lt))
	 (pktsdir  (if pktsdirs (car pktsdirs) #f))
	 (toppath  (or (configf:lookup mtconf "scratchdat" "toppath")
		       toppath-in))
	 (pdbpath  (or (configf:lookup mtconf "setup"  "pdbpath") pktsdir)))
    (cond
     ((not (and  pktsdir toppath pdbpath))
      (debug:print 0 *default-log-port* "ERROR: settings are missing in your megatest.config for area management.")
      (debug:print  0 *default-log-port* "  you need to have pktsdirs in the [setup] section."))
     ((not (common:file-exists? pktsdir))
      (debug:print 0 *default-log-port* "ERROR: pkts directory not found " pktsdir))
     ((not (equal? (file-owner pktsdir)(current-effective-user-id)))
      (debug:print 0 *default-log-port* "ERROR: directory " pktsdir " is not owned by " (current-effective-user-name)))
     (else
	(let* ((pdb  (open-queue-db pdbpath "pkts.db"
				    schema: '("CREATE TABLE groups (id INTEGER PRIMARY KEY,groupname TEXT, CONSTRAINT group_constraint UNIQUE (groupname));"))))
	  (proc pktsdirs pktsdir pdb)
	  (dbi:close pdb))))))

(define (common:load-pkts-to-db mtconf #!key (use-lt #f))
  (common:with-queue-db
   mtconf
   (lambda (pktsdirs pktsdir pdb)
     (for-each
      (lambda (pktsdir) ;; look at all
	(cond
	 ((not (common:file-exists? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory " pktsdir " does not exist."))
	 ((not (directory? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory path " pktsdir " is not a directory."))
	 ((not (file-read-access? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory path " pktsdir " is not readable."))
	 (else
	  (debug:print-info 0 *default-log-port* "Loading packets found in " pktsdir)
	  (let ((pkts (glob (conc pktsdir "/*.pkt"))))
	    (for-each
	     (lambda (pkt)
	       (let* ((uuid    (cadr (string-match ".*/([0-9a-f]+).pkt" pkt)))
		      (exists  (lookup-by-uuid pdb uuid #f)))
		 (if (not exists)
		     (let* ((pktdat (string-intersperse
				     (with-input-from-file pkt read-lines)
				     "\n"))
			    (apkt   (pkt->alist pktdat))
			    (ptype  (alist-ref 'T apkt)))
		       (add-to-queue pdb pktdat uuid (or ptype 'cmd) #f 0)
		       (debug:print 4 *default-log-port* "Added " uuid " of type " ptype " to queue"))
		     (debug:print 4 *default-log-port* "pkt: " uuid " exists, skipping...")
		     )))
	     pkts)))))
      pktsdirs))
   use-lt: use-lt))

(define (common:get-pkt-alists pkts)
  (map (lambda (x)
	 (alist-ref 'apkt x)) ;; 'pkta pulls out the alist from the read pkt
       pkts))

;; given list of pkts (alist mode) return list of D cards as Unix epoch, sorted descending
;; also delete duplicates by target i.e. (car pkt)
;;
(define (common:get-pkt-times pkts)
  (delete-duplicates
   (sort 
    (map (lambda (x)
	   `(,(alist-ref 't x) . ,(string->number (alist-ref 'D x))))
	 pkts)
    (lambda (a b)(> (cdr a)(cdr b))))      ;; sort descending
   (lambda (a b)(equal? (car a)(car b))))) ;; remove duplicates by target



;; accept an alist or hash table containing envvar/env value pairs (value of #f causes unset) 
;;   execute thunk in context of environment modified as per this list
;;   restore env to prior state then return value of eval'd thunk.
;;   ** this is not thread safe **
(define (common:with-env-vars delta-env-alist-or-hash-table thunk)
  (let* ((delta-env-alist (if (hash-table? delta-env-alist-or-hash-table)
                              (hash-table->alist delta-env-alist-or-hash-table)
                              delta-env-alist-or-hash-table))
         (restore-thunks
          (filter
           identity
           (map (lambda (env-pair)
                  (let* ((env-var     (car env-pair))
                         (new-val     (let ((tmp (cdr env-pair)))
                                        (if (list? tmp) (car tmp) tmp)))
                         (current-val (get-environment-variable env-var))
                         (restore-thunk
                          (cond
                           ((not current-val) (lambda () (unsetenv env-var)))
                           ((not (string? new-val)) #f)
                           ((eq? current-val new-val) #f)
                           (else 
                            (lambda () (setenv env-var current-val))))))
                    ;;(when (not (string? new-val))
                    ;;    (debug:print 0 *default-log-port* " PROBLEM: not a string: "new-val"\n from env-alist:\n"delta-env-alist)
                    ;;    (pp delta-env-alist)
                    ;;    (exit 1))
                        
                    
                    (cond
                     ((not new-val)  ;; modify env here
                      (unsetenv env-var))
                     ((string? new-val)
                      (setenv env-var new-val)))
                    restore-thunk))
                delta-env-alist))))
    (let ((rv (thunk)))
      (for-each (lambda (x) (x)) restore-thunks) ;; restore env to original state
      rv)))

(define *common:thread-punchlist* (make-hash-table))
(define (common:send-thunk-to-background-thread thunk #!key (name #f))
  ;;(BB> "launched thread " name)

  ;; we need a unique name for the thread.
  (let* ((realname (if name
                       (if (not (hash-table-ref/default *common:thread-punchlist* name #f))
                           name
                           (conc name"-" (symbol->string (gensym))))
                       (conc "anonymous-"(symbol->string (gensym)))))
         (realthunk (lambda ()
                      (let ((res (thunk)))
                        (hash-table-delete! *common:thread-punchlist* realname)
                        res)))
         (thread   (make-thread realthunk realname)))
    (hash-table-set! *common:thread-punchlist* realname thread)
    (thread-start! thread)
    ))

(define (common:join-backgrounded-threads)
  ;; may need to trap and ignore exceptions -- dunno how atomic threads are...
  (for-each
   (lambda (thread-name)
     (let* ((thread (hash-table-ref/default *common:thread-punchlist* thread-name #f)))
       (if thread
           (handle-exceptions
               exn
	     (begin
	       (debug:print 0 *default-log-port* "joining threads failed. exn=" exn)
               #t) ;; just ignore it, it might have died in the meantime so joining it will throw an exception
             (thread-join! thread))
           )))
   (hash-table-keys *common:thread-punchlist*)))

(define *common:telemetry-log-state* 'startup)
(define *common:telemetry-log-socket* #f)

(define (common:telemetry-log-open)
  (if (eq? *common:telemetry-log-state* 'startup)
      (let* ((serverhost (configf:lookup *configdat* "telemetry" "host"))
             (serverport (configf:lookup-number *configdat* "telemetry" "port"))
             (user (or (get-environment-variable "USER") "unknown"))
             (host (or (get-environment-variable "HOST") "unknown")))
        (set! *common:telemetry-log-state*
              (handle-exceptions
               exn
               (begin
                 (debug:print-info 0 *default-log-port* "common-telemetry-log open udp port failure")
                 'broken)
               (if (and serverhost serverport user host)
                   (let* ((s (udp-open-socket)))
                     ;;(udp-bind! s #f 0)
                     (udp-connect! s serverhost serverport)
                     (set! *common:telemetry-log-socket* s)
                     'open)
                   'not-needed))))))
  
(define (common:telemetry-log event #!key (payload '()))
  (if (eq? *common:telemetry-log-state* 'startup)
      (common:telemetry-log-open))

  (if (eq? 'open *common:telemetry-log-state*)
      (handle-exceptions
       exn
       (begin
         (debug:print-info 0 *default-log-port* "common-telemetry-log comms failure ; disabled (no server?)")
         ;;(define *common:telemetry-log-state* 'broken-or-no-server-preclose)
         ;;(common:telemetry-log-close)
         (define *common:telemetry-log-state* 'broken-or-no-server)
         (set! *common:telemetry-log-socket* #f)
         )
       (if (and *common:telemetry-log-socket* event) ;; TODO - filter on event against telemetry.want-events
           (let* ((user (or (get-environment-variable "USER") "unknown"))
                  (host (or (get-environment-variable "HOST") "unknown"))
                  (start (conc "[megatest "event"]"))
                  (toppath (or *toppath* "/dev/null"))
                  (payload-serialized
                   (base64:base64-encode
                    (z3:encode-buffer
                     (with-output-to-string (lambda () (pp payload))))))
                  (msg     (conc user":"host":"start":"(current-process-id)":"(car (argv))":"
                                 toppath":"payload-serialized)))
             (udp-send *common:telemetry-log-socket* msg))))))
  
(define (common:telemetry-log-close)
  (when (or (member *common:telemetry-log-state* '(broken-or-no-server-preclose open)) *common:telemetry-log-socket*)
    (handle-exceptions
     exn
     (begin
       (define *common:telemetry-log-state* 'closed-fail)
       (debug:print-info 0 *default-log-port* "common-telemetry-log closure failure")
       )
     (begin
       (define *common:telemetry-log-state* 'closed)
       (udp-close-socket *common:telemetry-log-socket*)
       (set! *common:telemetry-log-socket* #f)))))

(declare (unit commonmod))

(module commonmod
	*
	
(import scheme chicken data-structures extras files ports)
(use
 (prefix base64 base64:)
 (prefix dbi dbi:)
(import (prefix sqlite3 sqlite3:) posix typed-records srfi-18 srfi-69
	md5 message-digest
	regex regex-case
	srfi-1
 (prefix sqlite3 sqlite3:)
 (srfi 18)
 format
 matchable
 md5
 message-digest
 pkts
 posix
 regex
 regex-case
 sparse-vectors
 srfi-1
	format
	matchable
	srfi-13)
 srfi-13
 srfi-69
 stack
 typed-records
 )
	

;;======================================================================
;; CONTENTS
;;
;;  config file utils
;;  misc conversion, data manipulation functions
;;  testsuite and area utilites

(define *db-with-db-mutex*  (make-mutex))
(define *max-api-process-requests* 0)
(define *common:denoise*    (make-hash-table)) ;; for low noise printing
(define *api-process-request-count* 0)
(define *db-keys*           #f)
(define *db-cache-path*     #f)

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

(define *glob-like-match-cache* (make-hash-table))

(define (get-full-version)
  (conc megatest-version "-" megatest-fossil-hash))

(define (version-signature)
  (conc megatest-version "-" (substring megatest-fossil-hash 0 4)))

(defstruct remote

         (file-list (if (eq? 0 (length glob-list))
			'("/no/such/file")
			glob-list)))
  (apply max
	 (map
	  common:lazy-modification-time 
	  file-list))))

;; execute thunk, return value.  If exception thrown, trap exception, return #f, and emit nonfatal condition note to *default-log-port* .
;; arguments - thunk, message
(define (common:fail-safe thunk warning-message-on-exception)
  (handle-exceptions
   exn
   (begin
     (debug:print-info 0 *default-log-port* "notable but nonfatal condition - "warning-message-on-exception", exn=" exn)
     (debug:print-info 0 *default-log-port*
                       (string-substitute "\n?Error:" "nonfatal condition:"
                                          (with-output-to-string
                                            (lambda ()
                                              (print-error-message exn) ))))
     (debug:print-info 0 *default-log-port* "    -- continuing after nonfatal condition...")
     #f)
   (thunk)))

(define getenv get-environment-variable)
(define (safe-setenv key val)
  (if (or (substring-index "!" key)
	  (substring-index ":" key)  ;; variables containing : are for internal use and cannot be environment variables.
	  (substring-index "." key)) ;; periods are not allowed in environment variables
      (debug:print-error 4 *default-log-port* "skip setting internal use only variables containing \":\" or starting with \"!\"")
      (if (and (string? val)
	       (string? key))
	  (handle-exceptions
	      exn
	      (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val ", exn=" exn)
	    (setenv key val))
	  (debug:print-error 0 *default-log-port* "bad value for setenv, key=" key ", value=" val))))

(define home (getenv "HOME"))
(define user (getenv "USER"))


;; returns list of fd count, socket count
(define (get-file-descriptor-count #!key  (pid (current-process-id )))
  (list
    (length (glob (conc "/proc/" pid "/fd/*")))
    (length  (filter identity (map socket? (glob (conc "/proc/" pid "/fd/*")))))
  )
)

  

;; GLOBALS

;; CONTEXTS
(defstruct cxt
  (taskdb #f)
  (cmutex (make-mutex)))
;; (define *contexts* (make-hash-table))
;; (define *context-mutex* (make-mutex))

;; ;; safe method for accessing a context given a toppath
;; ;;
;; (define (common:with-cxt toppath proc)
;;   (mutex-lock! *context-mutex*)
;;   (let ((cxt (hash-table-ref/default *contexts* toppath #f)))
;;     (if (not cxt)
;;         (set! cxt (let ((x (make-cxt)))(hash-table-set! *contexts* toppath x) x)))
;;     (let ((cxt-mutex (cxt-mutex cxt)))
;;       (mutex-unlock! *context-mutex*)
;;       (mutex-lock! cxt-mutex)
;;       (let ((res (proc cxt)))
;;         (mutex-unlock! cxt-mutex)
;;         res))))
        
;; A hash table that can be accessed by #{scheme ...} calls in
;; config files. Allows communicating between confgs
;;
(define *user-hash-data* (make-hash-table))

(define *pkts-info*    (make-hash-table)) ;; store stuff like the last parent here

(define *runconfigdat* #f)   ;; run configs data
(define *configdat*    #f)   ;; megatest.config data
(define *configstatus* #f)   ;; status of data; 'fulldata : all processing done, #f : no data yet, 'partialdata : partial read done

(define *already-seen-runconfig-info* #f)

(define *test-meta-updated* (make-hash-table))
(define *globalexitstatus*  0) ;; attempt to work around possible thread issues
(define *passnum*           0) ;; when running track calls to run-tests or similar
;; (define *alt-log-file* #f)  ;; used by -log

(define *time-zero* (current-seconds)) ;; for the watchdog
(define *default-area-tag* "local")

;; DATABASE
(define *dbstruct-db*         #f) ;; used to cache the dbstruct in db:setup. Goal is to remove this.
;; db stats
(define *db-stats*            (make-hash-table)) ;; hash of vectors < count duration-total >
(define *db-stats-mutex*      (make-mutex))
;; db access
(define *db-last-access*      (current-seconds)) ;; last db access, used in server
(define *db-write-access*     #t)
;; db sync
(define *db-last-sync*        0)                 ;; last time the sync to megatest.db happened
(define *db-sync-in-progress* #f)                ;; if there is a sync in progress do not try to start another
(define *db-multi-sync-mutex* (make-mutex))      ;; protect access to *db-sync-in-progress*, *db-last-sync*
;; task db
(define *task-db*             #f) ;; (vector db path-to-db)
(define *db-access-allowed*   #t) ;; flag to allow access
(define *db-access-mutex*     (make-mutex))
(define *db-transaction-mutex* (make-mutex))

(define *db-api-call-time*    (make-hash-table)) ;; hash of command => (list of times)
;; no sync db
(define *no-sync-db*          #f)

;; SERVER
(define *my-client-signature* #f)
(define *transport-type*    'http)             ;; override with [server] transport http|rpc|nmsg
(define *runremote*         #f)                ;; if set up for server communication this will hold <host port>
;; (define *max-cache-size*    0)
(define *logged-in-clients* (make-hash-table))
(define *server-id*         #f)
(define *server-info*       #f)  ;; good candidate for easily convert to non-global
(define *time-to-exit*      #f)
(define *server-run*        #t)
(define *run-id*            #f)
(define *server-kind-run*   (make-hash-table))
(define *home-host*         #f)
;; (define *total-non-write-delay* 0)
(define *heartbeat-mutex*   (make-mutex))

(define *server-overloaded*  #f)

;; client
(define *rmt-mutex*         (make-mutex))     ;; remote access calls mutex 

;; RPC transport
(define *rpc:listener*      #f)

;; KEY info
(define *target*            (make-hash-table)) ;; cache the target here; target is keyval1/keyval2/.../keyvalN
(define *keys*              (make-hash-table)) ;; cache the keys here
(define *keyvals*           (make-hash-table))
(define *toptest-paths*     (make-hash-table)) ;; cache toptest path settings here
(define *test-paths*        (make-hash-table)) ;; cache test-id to test run paths here
(define *test-ids*          (make-hash-table)) ;; cache run-id, testname, and item-path => test-id
(define *test-info*         (make-hash-table)) ;; cache the test info records, update the state, status, run_duration etc. from testdat.db

(define *run-info-cache*     (make-hash-table)) ;; run info is stable, no need to reget
(define *launch-setup-mutex* (make-mutex))     ;; need to be able to call launch:setup often so mutex it and re-call the real deal only if *toppath* not set
(define *homehost-mutex*     (make-mutex))

;; Miscellaneous
(define *triggers-mutex*     (make-mutex))     ;; block overlapping processing of triggers

(use posix-extras pathname-expand files)

;; this plugs a hole in posix-extras in recent chicken versions > 4.9)
(let-values (( (chicken-release-number chicken-major-version)
               (apply values
                      (map string->number
                           (take
                            (string-split (chicken-version) ".")
                            2)))))
  (let ((resolve-pathname-broken?
         (or (> chicken-release-number 4)
             (and (eq? 4 chicken-release-number) (> chicken-major-version 9)))))
    (if resolve-pathname-broken?
        (define ##sys#expand-home-path pathname-expand))))
      
(define (realpath x) (resolve-pathname  (pathname-expand (or x "/dev/null")) ))

(define (common:get-this-exe-fullpath #!key (argv (argv)))
  (let* ((this-script
          (cond
           ((and (> (length argv) 2)
                 (string-match "^(.*/csi|csi)$" (car argv))
                 (string-match "^-(s|ss|sx|script)$" (cadr argv)))
            (caddr argv))
           (else (car argv))))
         (fullpath (realpath this-script)))
    fullpath))
(define *common:this-exe-fullpath* (common:get-this-exe-fullpath))
(define *common:this-exe-dir*      (pathname-directory *common:this-exe-fullpath*))
(define *common:this-exe-name*     (pathname-strip-directory *common:this-exe-fullpath*))

;; when called from a wrapper I need sometimes to find the calling
;; wrapper, this is for dashboard to find the correct megatest.
;;
(define (common:find-local-megatest #!optional (progname "megatest"))
  (let ((res (filter file-exists?
		     (map (lambda (updir)
			    (let* ((lm  (car (argv)))
				   (dir (pathname-directory lm))
				   (exe (pathname-strip-directory lm)))
			      (conc (if dir (conc dir "/") "")
				    (case (string->symbol exe)
				      ((dboard)    (conc updir progname))
				      ((mtest)     (conc updir progname))
				      ((dashboard) progname)
				      (else exe)))))
			  '("../../" "../")))))
    (if (null? res)
	(begin
	  (debug:print 0 *current-log-port* "Failed to find this executable! Using what can be found on the path")
	  progname)
	(car res))))

(define *common:logpro-exit-code->status-sym-alist*
  '( ( 0 . pass )
     ( 1 . fail )
     ( 2 . warn )
     ( 3 . check )
     ( 4 . waived )
     ( 5 . abort )
     ( 6 . skip )))

(define (common:logpro-exit-code->status-sym exit-code)
  (or (alist-ref exit-code *common:logpro-exit-code->status-sym-alist*) 'fail))

(define (common:worse-status-sym ss1 ss2)
  (let loop ((status-syms-remaining '(abort fail check skip warn waived pass)))
    (cond
     ((null? status-syms-remaining)
      'fail)
     ((eq? (car status-syms-remaining) ss1)
      ss1)
     ((eq? (car status-syms-remaining) ss2)
      ss2)
     (else
      (loop (cdr status-syms-remaining))))))

(define (common:steps-can-proceed-given-status-sym status-sym)
  (if (member status-sym '(warn waived pass))
      #t
      #f))

(define (status-sym->string status-sym)
  (case status-sym
      ((pass) "PASS")
    ((fail) "FAIL")
    ((warn) "WARN")
    ((check) "CHECK")
    ((waived) "WAIVED")
    ((abort) "ABORT")
    ((skip) "SKIP")
    (else "FAIL")))

(define (common:logpro-exit-code->test-status exit-code)
  (status-sym->string (common:logpro-exit-code->status-sym exit-code)))

(define *host-loads*         (make-hash-table))

;; cache environment vars for each run here
(define *env-vars-by-run-id* (make-hash-table))

;; Testconfig and runconfig caches. 
(define *testconfigs*        (make-hash-table)) ;; test-name => testconfig
(define *runconfigs*         (make-hash-table)) ;; target    => runconfig

;; This is a cache of pre-reqs met, don't re-calc in cases where called with same params less than
;; five seconds ago
(define *pre-reqs-met-cache* (make-hash-table))

;; cache of verbosity given string
;;
(define *verbosity-cache*    (make-hash-table))

(define (common:clear-caches)
  (set! *target*             (make-hash-table))
  (set! *keys*               (make-hash-table))
  (set! *keyvals*            (make-hash-table))
  (set! *toptest-paths*      (make-hash-table))
  (set! *test-paths*         (make-hash-table))
  (set! *test-ids*           (make-hash-table))
  (set! *test-info*          (make-hash-table))
  (set! *run-info-cache*     (make-hash-table))
  (set! *env-vars-by-run-id* (make-hash-table))
  (set! *test-id-cache*      (make-hash-table)))

;; Generic string database
(define sdb:qry #f) ;; (make-sdb:qry)) ;;  'init #f)
;; Generic path database
(define *fdb* #f)

(define *last-launch* (current-seconds)) ;; use for throttling the launch rate. Would be better to use the db and last time of a test in LAUNCHED state.

;;======================================================================
;; V E R S I O N
;;======================================================================

(define (common:get-full-version)
  (conc megatest-version "-" megatest-fossil-hash))

(define (common:version-signature)
  (conc megatest-version "-" (substring megatest-fossil-hash 0 4)))

;; from metadat lookup MEGATEST_VERSION
;;
(define (common:get-last-run-version) ;; RADT => How does this work in send-receive function??; assume it is the value saved in some DB
  (rmt:get-var "MEGATEST_VERSION"))

(define (common:get-last-run-version-number)
  (string->number 
   (substring (common:get-last-run-version) 0 6)))

(define (common:set-last-run-version)
  (rmt:set-var "MEGATEST_VERSION" (common:version-signature)))

;; postive number if megatest version > db version
;; negative number if megatest version < db version
(define (common:version-db-delta)
         (- megatest-version (common:get-last-run-version-number)))

(define (common:version-changed?)
  (not (equal? (common:get-last-run-version)
               (common:version-signature))))

(define (common:api-changed?)
  (not (equal? (substring (->string megatest-version) 0 4)
               (substring (conc (common:get-last-run-version)) 0 4))))


(define (common:get-sync-lock-filepath)
  (let* ((tmp-area     (common:get-db-tmp-area))
         (lockfile     (conc tmp-area "/megatest.db.sync-lock")))
    lockfile))
    
;; Move me elsewhere ...
;; RADT => Why do we meed the version check here, this is called only if version misma
;;
(define (common:cleanup-db dbstruct #!key (full #f))
  (apply db:multi-db-sync 
   dbstruct
   'schema
   ;; 'new2old
   'killservers
   'adj-target
   ;; 'old2new
   'new2old
   ;; (if full
       '(dejunk)
       ;; '())
       )
  (if (common:api-changed?)
      (common:set-last-run-version)))

(define (common:snapshot-file filepath #!key (subdir  ".") )
  (if (file-exists? filepath)
      (let* ((age-sec  (lambda (file)
                         (if (file-exists? file)
                             (- (current-seconds) (file-modification-time file))
                             1000000000))) ;; return really old value if file doesn't exist.  we want to clobber it if old or not exist.
             (ok-flag  #t)
             (age-mins (lambda (file) (/ (age-sec   file) 60)))
             (age-hrs  (lambda (file) (/ (age-mins file) 60)))
             (age-days (lambda (file) (/ (age-hrs   file) 24)))
             (age-wks  (lambda (file) (/ (age-days  file) 7)))
             (docmd    (lambda (cmd)
                         (cond
                          (ok-flag
                           (let ((res (system cmd)))
                             (cond
                              ((eq? 0 res)
                               #t)
                              (else
                               (set! ok-flag #f)
                               (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Command failed with exit code "
                                            (if (< res 0)
                                                res
                                                (/ res 8)) " ["cmd"]" )
                               #f))))
                          (else
                           (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Not runnining command due to prior error. ["cmd"]")
                           #f))))
             (copy     (lambda (src dest) (docmd (conc "/bin/cp '"src"' '"dest"'"))))
             (copy+zip (lambda (src dest) (docmd (conc "gzip -c - < '"src"' > '"dest"'"))))
             (fullpath (realpath filepath))
             (basedir  (pathname-directory fullpath))
             (basefile (pathname-strip-directory fullpath))
             ;;(prevfile (conc filepath ".prev.gz"))
             (minsfile (conc basedir "/" subdir "/" basefile ".mins.gz"))
             (hrsfile  (conc basedir "/" subdir "/" basefile ".hrs.gz"))
             (daysfile (conc basedir "/" subdir "/" basefile ".days.gz"))
             (wksfile  (conc basedir "/" subdir "/" basefile ".weeks.gz")))

        ;; create subdir it not exists
        (if (not (directory-exists? (conc basedir "/" subdir)))
            (docmd (conc "/bin/mkdir -p '"(conc basedir "/" subdir)"'")))
        
        ;; copy&zip <file> to <file>.mins if not exists
        (if (not (file-exists? minsfile))
            (copy+zip filepath minsfile))
        ;; copy <file>.mins to <file>.hrs if not exists
        (if (not (file-exists? hrsfile))
            (copy minsfile hrsfile))
        ;; copy <file>.hrs to <file>.days if not exists
        (if (not (file-exists? daysfile))
            (copy hrsfile daysfile))
        ;; copy <file>.days to <file>.weeks if not exists
        (if (not (file-exists? wksfile))
            (copy daysfile wksfile))


        ;; if age(<file>.mins.gz) >= 1h:
        ;;     copy <file>.mins.gz <file>.hrs.gz
        ;;     copy <prev file> <file>.mins.gz
        (when (>= (age-mins minsfile) 1)
          (copy minsfile hrsfile)
          (copy+zip filepath  minsfile))
        
        ;; if age(<file>.hrs.gz) >= 1d:
        ;;     copy <file>.hrs.gz <file>.days.gz
        ;;     copy <file>.mins.gz <file>.hrs.gz
        (when (>= (age-days hrsfile) 1)
          (copy hrsfile daysfile)
          (copy minsfile hrsfile))
        
        ;; if age(<file>.days.gz) >= 1w:
        ;;     copy <file>.days.gz <file>.weeks.gz
        ;;     copy <file>.hrs.gz <file>.days.gz
        (when (>= (age-wks daysfile) 1)
          (copy daysfile wksfile)
          (copy hrsfile daysfile))
        #t)
      #f))
  
        
        
;; Rotate logs, logic: 
;;                 if > 500k and older than 1 week:
;;                     remove previous compressed log and compress this log
;; WARNING: This proc operates assuming that it is in the directory above the
;;          logs directory you wish to log-rotate.
;;
(define (common:rotate-logs)
  (let* ((all-files (make-hash-table))
	 (stats     (make-hash-table))
	 (inc-stat  (lambda (key)
		      (hash-table-set! stats key (+ (hash-table-ref/default stats key 0) 1))))
	(max-allowed (string->number (or (configf:lookup *configdat* "setup" "max-logfiles") "300")))) ;; name -> age
    (if (not (directory-exists? "logs"))(create-directory "logs"))
    (directory-fold 
     (lambda (file rem)
       (handle-exceptions
	exn
	(begin
	  (debug:print-info 2 *default-log-port* "unable to rotate log " file ", probably handled by another process, this is safe to ignore. exn=" exn)
	  (debug:print 2 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	  ;; (print-call-chain (current-error-port)) ;; 
	  )
	(let* ((fullname  (conc "logs/" file))
	       (mod-time  (file-modification-time fullname))
	       (file-age  (- (current-seconds) mod-time))
	       (file-old  (> file-age (* 48 60 60)))
	       (file-big  (> (file-size fullname) 200000)))
	  (hash-table-set! all-files file mod-time)
	  (if (or (and (string-match "^.*.log" file)
		       file-old
		       file-big)
		  (and (string-match "^server-.*.log" file)
		       file-old))
	      (let ((gzfile (conc fullname ".gz")))
		(if (common:file-exists? gzfile)
		    (begin
		      (debug:print-info 0 *default-log-port* "removing " gzfile)
		      (delete-file* gzfile)
		      (hash-table-delete!  all-files gzfile) ;; needed?
		      ))
		(debug:print-info 0 *default-log-port* "compressing " file)
		(system (conc "gzip " fullname))
		(inc-stat "gzipped")
		(hash-table-set! all-files (conc file ".gz") file-age)  ;; add the .gz file and remove the base file
		(hash-table-delete! all-files file)
		)
	      (if (and (> file-age (* (string->number (or (configf:lookup *configdat* "setup" "log-expire-days") "30")) 24 3600))
		       (file-exists? fullname)) ;; just in case it was gzipped - will get it next time
		  (handle-exceptions
		   exn
		   #f
		   (if (directory? fullname)
		       (begin
			 (debug:print-info 0 *default-log-port* fullname " in logs directory is a directory! Cannot rotate it, it is best to not put subdirectories in the logs dir.")
			 (inc-stat "directories"))
		       (begin
			 (delete-file* fullname)
			 (inc-stat "deleted")))
		   (hash-table-delete! all-files file)))))))
     '()
     "logs")
    (for-each
     (lambda (category)
       (let ((quant (hash-table-ref/default stats category 0)))
	 (if (> quant 0)
	     (debug:print-info 0 *default-log-port* category " log files: " quant))))
     `("deleted" "gzipped" "directories"))
    (let ((num-logs (hash-table-size all-files)))
      (if (> num-logs max-allowed) ;; because NFS => don't let number of logs exceed 300
	  (let ((files (take (sort (hash-table-keys all-files)
				   (lambda (a b)
				     (< (hash-table-ref all-files a)(hash-table-ref all-files b))))
			     (- num-logs max-allowed))))
	    (for-each
	     (lambda (file)
	       (let* ((fullname (conc "logs/" file)))
		 (if (directory? fullname)
		     (debug:print-info 0 *default-log-port* fullname " in logs directory is a directory! Cannot rotate it, it is best to not put subdirectories in the logs dir.")
		     (handle-exceptions
		      exn
		      (debug:print-error 0 *default-log-port* "failed to remove " fullname ", exn=" exn)
		      (delete-file* fullname)))))
	     files)
	    (debug:print-info 0 *default-log-port* "Deleted " (length files) " files from logs, keeping " max-allowed " files."))))))
  
;; Force a megatest cleanup-db if version is changed and skip-version-check not specified
;; Do NOT check if not on homehost!
;;
(define (common:exit-on-version-changed)
  (if (common:on-homehost?)
      (if (common:api-changed?)
	  (let* ((mtconf (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.config"))
                (dbfile  (conc (get-environment-variable "MT_RUN_AREA_HOME") "/megatest.db"))
                (read-only (not (file-write-access? dbfile)))
                (dbstruct (db:setup #t)))
	    (debug:print 0 *default-log-port*
			 "WARNING: Version mismatch!\n"
			 "   expected: " (common:version-signature) "\n"
			 "   got:      " (common:get-last-run-version))
            (cond
             ((get-environment-variable "MT_SKIP_DB_MIGRATE") #t)
             ((and (common:file-exists? mtconf) (common:file-exists? dbfile) (not read-only)
                   (eq? (current-user-id)(file-owner mtconf))) ;; safe to run -cleanup-db
              (debug:print 0 *default-log-port* "   I see you are the owner of megatest.config, attempting to cleanup and reset to new version")
              (handle-exceptions
               exn
               (begin
                 (debug:print 0 *default-log-port* "Failed to switch versions. exn=" exn)
                 (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
                 (print-call-chain (current-error-port))
                 (exit 1))
               (common:cleanup-db dbstruct)))
             ((not (common:file-exists? mtconf))
              (debug:print 0 *default-log-port* "   megatest.config does not exist in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             ((not (common:file-exists? dbfile))
              (debug:print 0 *default-log-port* "   megatest.db does not exist in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             ((not (eq? (current-user-id)(file-owner mtconf)))
              (debug:print 0 *default-log-port* "   You do not own megatest.db in this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             (read-only
              (debug:print 0 *default-log-port* "   You have read-only access to this area.  Cannot proceed with megatest version migration.")
              (exit 1))
             (else
              (debug:print 0 *default-log-port* " to switch versions you can run: \"megatest -cleanup-db\"")
              (exit 1)))))))
;;      (begin
;;	(debug:print 0 *default-log-port* "ERROR: cannot migrate version unless on homehost. Exiting.")
;;	(exit 1))))

;;======================================================================
;; S P A R S E   A R R A Y S
;;======================================================================

(define (make-sparse-array)
  (let ((a (make-sparse-vector)))
    (sparse-vector-set! a 0 (make-sparse-vector))
    a))

(define (sparse-array? a)
  (and (sparse-vector? a)
       (sparse-vector? (sparse-vector-ref a 0))))

(define (sparse-array-ref a x y)
  (let ((row (sparse-vector-ref a x)))
    (if row
	(sparse-vector-ref row y)
	#f)))

(define (sparse-array-set! a x y val)
  (let ((row (sparse-vector-ref a x)))
    (if row
	(sparse-vector-set! row y val)
	(let ((new-row (make-sparse-vector)))
	  (sparse-vector-set! a x new-row)
	  (sparse-vector-set! new-row y val)))))

;;======================================================================
;; L O C K E R S   A N D   B L O C K E R S 
;;======================================================================

;; block further accesses to databases. Call this before shutting db down
(define (common:db-block-further-queries)
  (mutex-lock! *db-access-mutex*)
  (set! *db-access-allowed* #f)
  (mutex-unlock! *db-access-mutex*))

(define (common:db-access-allowed?)
  (let ((val (begin
	       (mutex-lock! *db-access-mutex*)
	       *db-access-allowed*
	       (mutex-unlock! *db-access-mutex*))))
    val))

;;======================================================================
;; U S E F U L   S T U F F
;;======================================================================

;; convert things to an alist or assoc list, #f gets converted to ""
;;
(define (common:to-alist dat)
  (cond
   ((list? dat)   (map common:to-alist dat))
   ((vector? dat)
    (map common:to-alist (vector->list dat)))
   ((pair? dat)
    (cons (common:to-alist (car dat))
	  (common:to-alist (cdr dat))))
   ((hash-table? dat)
    (map common:to-alist (hash-table->alist dat)))
   (else
    (if dat
	dat
	""))))

(define (common:alist-ref/default key alist default)
  (or (alist-ref key alist) default))

(define (common:low-noise-print waitval . keys)
  (let* ((key      (string-intersperse (map conc keys) "-" ))
	 (lasttime (hash-table-ref/default *common:denoise* key 0))
	 (currtime (current-seconds)))
    (if (> (- currtime lasttime) waitval)
	(begin
	  (hash-table-set! *common:denoise* key currtime)
	  #t)
	#f)))

(define (common:get-megatest-exe)
  (or (getenv "MT_MEGATEST") "megatest"))

(define (common:read-encoded-string instr)
  (handle-exceptions
   exn
   (handle-exceptions
    exn
    (begin
      (debug:print-error 0 *default-log-port* "received bad encoded string \"" instr "\", message: " ((condition-property-accessor 'exn 'message) exn) ", exn=" exn)
      (print-call-chain (current-error-port))
      #f)
    (read (open-input-string (base64:base64-decode instr))))
   (read (open-input-string (z3:decode-buffer (base64:base64-decode instr))))))

;;======================================================================
;; S T A T E S   A N D   S T A T U S E S
;;======================================================================

;; BBnote: *common:std-states* - dashboard filter control and test control state buttons defined here; used in set-fields-panel and dboard:make-controls
(define *common:std-states*   ;; for toggle buttons in dashboard
  '(
    (0 "ARCHIVED")
    (1 "STUCK")
    (2 "KILLREQ")
    (3 "KILLED")
    (4 "NOT_STARTED")
    (5 "COMPLETED")
    (6 "LAUNCHED")
    (7 "REMOTEHOSTSTART")
    (8 "RUNNING")
    ))

(define *common:dont-roll-up-states*
  '("DELETED"
    "REMOVING"
    "CLEANING"
    "ARCHIVE_REMOVING"
    ))

;; BBnote: *common:std-statuses* dashboard filter control and test control status buttons defined here; used in set-fields-panel and dboard:make-controls
;; note these statuses are sorted from better to worse.
;; This sort order is important to dcommon:status-compare3 and db:set-state-status-and-roll-up-items
(define *common:std-statuses*
  '(;; (0 "DELETED")  
    (1 "n/a")
    (2 "PASS")
    (3 "SKIP")
    (4 "WARN")
    (5 "WAIVED")
    (6 "CHECK")
    (7 "STUCK/DEAD")
    (8 "DEAD")
    (9 "FAIL")
    (10 "PREQ_FAIL")
    (11 "PREQ_DISCARDED")
    (12 "ABORT")))

(define (common:status>? s1 s2)
  (let* ((munged (map (lambda (x) `(,(cadr x) . ,(car x))) *common:std-statuses*))
	 (v1     (alist-ref s1 munged equal?))
	 (v2     (alist-ref s2 munged equal?)))
    (> v1 v2)))

(define *common:ended-states*       ;; states which indicate the test is stopped and will not proceed
  '("COMPLETED" "ARCHIVED" "KILLED" "KILLREQ" "STUCK" "INCOMPLETE" ))

(define *common:badly-ended-states* ;; these roll up as CHECK, i.e. results need to be checked
  '("KILLED" "KILLREQ" "STUCK" "INCOMPLETE" "DEAD"))

(define *common:well-ended-states* ;; an item's prereq in this state allows item to proceed
  '("PASS" "WARN" "CHECK" "WAIVED" "SKIP"))

;; BBnote: *common:running-states* used from db:set-state-status-and-roll-up-items
(define *common:running-states*     ;; test is either running or can be run
  '("RUNNING" "REMOTEHOSTSTART" "LAUNCHED" "STARTED"))

(define *common:cant-run-states*    ;; These are stopping conditions that prevent a test from being run
  '("COMPLETED" "KILLED" "UNKNOWN" "INCOMPLETE" "ARCHIVED"))

(define *common:not-started-ok-statuses* ;; if not one of these statuses when in not_started state treat as dead
  '("n/a" "na" "PASS" "FAIL" "WARN" "CHECK" "WAIVED" "DEAD" "SKIP"))

;; group tests into buckets corresponding to rollup
;;; Running, completed-pass,  completed-non-pass + worst status, not started.
;; filter out 
;(define (common:categorize-items-for-rollup in-tests)
;  (

(define (common:special-sort items order comp)
  (let ((items-order (map reverse order))
        (acomp       (or comp >)))
    (sort items
        (lambda (a b)
          (let ((a-num (cadr (or (assoc a items-order) '(0 0))))
                (b-num (cadr (or (assoc b items-order) '(0 0)))))
            (acomp a-num b-num))))))

;; ;; given a toplevel with currstate, currstatus apply state and status
;; ;;  => (newstate . newstatus)
;; (define (common:apply-state-status currstate currstatus state status)
;;   (let* ((cstate  (string->symbol (string-downcase currstate)))
;;          (cstatus (string->symbol (string-downcase currstatus)))
;;          (sstate  (string->symbol (string-downcase state)))
;;          (sstatus (string->symbol (string-downcase status)))
;;          (nstate  #f)
;;          (nstatus #f))
;;     (set! nstate
;;           (case cstate
;;             ((completed not_started killed killreq stuck archived) 
;;              (case sstate ;; completed -> sstate
;;                ((completed killed killreq stuck archived) completed)
;;                ((running remotehoststart launched)        running)
;;                (else                                      unknown-error-1)))
;;             ((running remotehoststart launched)
;;              (case sstate
;;                ((completed killed killreq stuck archived) #f) ;; need to look at all items
;;                ((running remotehoststart launched)        running)
;;                (else                                      unknown-error-2)))
;;             (else unknown-error-3)))
;;     (set! nstatus
;;           (case sstatus
;;             ((pass)
;;              (case nstate
;;                ((pass n/a deleted)     pass)
;;                ((warn)                 warn)
;;                ((fail)                 fail)
;;                ((check)               check)
;;                ((waived)             waived)
;;                ((skip)                 skip)
;;                ((stuck/dead)          stuck)
;;                ((abort)               abort)
;;                (else        unknown-error-4)))
;;             ((warn)
;;              (case nstate
;;                ((pass warn n/a skip deleted)   warn)
;;                ((fail)                         fail)
;;                ((check)                       check)
;;                ((waived)                     waived)
;;                ((stuck/dead)                  stuck)
;;                (else                unknown-error-5)))
;;             ((fail)
;;              (case nstate
;;                ((pass warn fail check n/a waived skip deleted stuck/dead stuck)  fail)
;;                ((abort)                                                         abort)
;;                (else                                                  unknown-error-6)))
;;             (else    unknown-error-7)))
;;     (cons 
;;      (if nstate  (symbol->string nstate)  nstate)
;;      (if nstatus (symbol->string nstatus) nstatus))))
               
;;======================================================================
;; D E B U G G I N G   S T U F F 
;;======================================================================

(define *verbosity*         1)
(define *logging*           #f)

(define (get-with-default val default)
  (let ((val (args:get-arg val)))
    (if val val default)))

(define (assoc/default key lst . default)
  (let ((res (assoc key lst)))
    (if res (cadr res)(if (null? default) #f (car default)))))

(define (common:get-testsuite-name)
  (or (configf:lookup *configdat* "setup" "area-name") ;; megatest is a flexible tool, testsuite is too limiting a description.
      (configf:lookup *configdat* "setup" "testsuite" )
      (getenv "MT_TESTSUITE_NAME")
      (pathname-file (or (if (string? *toppath* )
			     (pathname-file *toppath*)
			     #f)
			 (common:get-topath #f)))
      "please-set-setup-area-name")) ;; (pathname-file (current-directory)))))

;; safe getting of toppath
(define (common:get-toppath areapath)
  (or *toppath*
      (if areapath
	  (begin
	    (set! *toppath* areapath)
	    (setenv "MT_RUN_AREA_HOME" areapath)
	    areapath)
	  #f)
      (if (getenv "MT_RUN_AREA_HOME")
	  (begin
	    (set! *toppath* (getenv "MT_RUN_AREA_HOME"))
	    *toppath*)
	  #f)
      ;; last resort, look for megatest.config
      (let loop ((thepath (realpath ".")))
	(if (file-exists? (conc thepath "/megatest.config"))
	    thepath
	    (if (equal? thepath "/")
		(begin
		  (debug:print-error 0 *default-log-port* "Unable to find megatest home directory.")
		  #f)
		(loop (pathname-directory thepath)))))
      ))

(define common:get-area-name common:get-testsuite-name)

(define (common:get-db-tmp-area . junk)
  (if *db-cache-path*
      *db-cache-path*
      (if *toppath* ;; common:get-create-writeable-dir
	  (handle-exceptions
	      exn
	      (begin
		(debug:print-error 0 *default-log-port* "Couldn't create path to " *db-cache-path* ", exn=" exn)
		(exit 1))
	      (let* ((tsname (common:get-testsuite-name))
		     (dbpath (common:get-create-writeable-dir
			      (list (conc "/tmp/" (current-user-name)
					  "/megatest_localdb/"
					  tsname "/"
					  (string-translate *toppath* "/" "."))
				    (conc "/tmp/" (current-process-id) ;; just in case we have an issue with the dir by own user name
					  "/megatest_localdb/"
					  tsname
					  (string-translate *toppath* "/" "."))
				    ))))
		(set! *db-cache-path* dbpath)
		dbpath))
	  #f)))

;;======================================================================
;; E X I T   H A N D L I N G
;;======================================================================

(define (common:run-sync?)
    (and (common:on-homehost?)
	 (args:get-arg "-server")))

;;   (let ((ohh (common:on-homehost?))
;; 	(srv (args:get-arg "-server")))
;;     (and ohh srv)))
    ;; (debug:print-info 0 *default-log-port* "common:run-sync? ohh=" ohh ", srv=" srv)



(define *wdnum* 0)
(define *wdnum*mutex (make-mutex))


(define (common:human-time)
  (time->string (seconds->local-time (current-seconds)) "%Y-%m-%d %H:%M:%S"))


;; currently the primary job of the watchdog is to run the sync back to megatest.db from the db in /tmp
;; if we are on the homehost and we are a server (by definition we are on the homehost if we are a server)
;;
(define (common:readonly-watchdog dbstruct)
  (thread-sleep! 0.05) ;; delay for startup
  (debug:print-info 13 *default-log-port* "common:readonly-watchdog entered.")
  ;; sync megatest.db to /tmp/.../megatst.db
  (let* ((sync-cool-off-duration   3)
        (golden-mtdb     (dbr:dbstruct-mtdb dbstruct))
        (golden-mtpath   (db:dbdat-get-path golden-mtdb))
        (tmp-mtdb        (dbr:dbstruct-tmpdb dbstruct))
        (tmp-mtpath      (db:dbdat-get-path tmp-mtdb)))
    (debug:print-info 0 *default-log-port* "Read-only periodic sync thread started.")
    (let loop ((last-sync-time 0))
      (debug:print-info 13 *default-log-port* "loop top tmp-mtpath="tmp-mtpath" golden-mtpath="golden-mtpath)
      (let* ((duration-since-last-sync (- (current-seconds) last-sync-time)))
        (debug:print-info 13 *default-log-port* "duration-since-last-sync="duration-since-last-sync)
        (if (and (not *time-to-exit*)
                 (< duration-since-last-sync sync-cool-off-duration))
            (thread-sleep! (- sync-cool-off-duration duration-since-last-sync)))
        (if (not *time-to-exit*)
            (let ((golden-mtdb-mtime (file-modification-time golden-mtpath))
                  (tmp-mtdb-mtime    (file-modification-time tmp-mtpath)))
	      (if (> golden-mtdb-mtime tmp-mtdb-mtime)
		  (if (< golden-mtdb-mtime (- (current-seconds) 3)) ;; file has NOT been touched in past three seconds, this way multiple servers won't fight to sync back
		      (let ((res (db:multi-db-sync dbstruct 'old2new)))
			(debug:print-info 13 *default-log-port* "rosync called, " res " records transferred."))))
              (loop (current-seconds)))
            #t)))
    (debug:print-info 0 *default-log-port* "Exiting readonly-watchdog timer, *time-to-exit* = " *time-to-exit*" pid="(current-process-id)" mtpath="golden-mtpath)))

;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define (common:watchdog)
  (debug:print-info 13 *default-log-port* "common:watchdog entered.")
  (if (launch:setup)
      (if (common:on-homehost?)
	  (let ((dbstruct (db:setup #t)))
	    (debug:print-info 13 *default-log-port* "after db:setup with dbstruct=" dbstruct)
	    (cond
	     ((dbr:dbstruct-read-only dbstruct)
	      (debug:print-info 13 *default-log-port* "loading read-only watchdog")
	      (common:readonly-watchdog dbstruct))
	     (else
	      (debug:print-info 13 *default-log-port* "loading writable-watchdog.")
              (let* ((syncer (or (configf:lookup *configdat* "server" "sync-method") "brute-force-sync")))
                (cond
                 ((equal? syncer "brute-force-sync")
                  (server:writable-watchdog-bruteforce dbstruct))
                 ((equal? syncer "delta-sync")
                  (server:writable-watchdog-deltasync dbstruct))
                 (else
                  (debug:print-error 0 *default-log-port* "Unknown server/sync-method specified ("syncer") - valid values are brute-force-sync and delta-sync.")
                  (exit 1)))
                ;;(debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] Syncer started (method="syncer")")
                )))
	    (debug:print-info 13 *default-log-port* "watchdog done."))
	  (debug:print-info 13 *default-log-port* "no need for watchdog on non-homehost"))))


(define (std-exit-procedure)
  ;;(common:telemetry-log-close)
  (on-exit (lambda () 0))
  ;;(debug:print-info 13 *default-log-port* "std-exit-procedure called; *time-to-exit*="*time-to-exit*)
  (let ((no-hurry  (if *time-to-exit* ;; hurry up
		       #f
		       (begin
			 (set! *time-to-exit* #t)
			 #t))))
    (debug:print-info 4 *default-log-port* "starting exit process, finalizing databases.")
    (if (and no-hurry (debug:debug-mode 18))
	(rmt:print-db-stats))
    (let ((th1 (make-thread (lambda () ;; thread for cleaning up, give it five seconds
                              (if *dbstruct-db* (db:close-all *dbstruct-db*)) ;; one second allocated
			      (if *task-db*    
				  (let ((db (cdr *task-db*)))
				    (if (sqlite3:database? db)
					(begin
					  (sqlite3:interrupt! db)
					  (sqlite3:finalize! db #t)
					  ;; (vector-set! *task-db* 0 #f)
					  (set! *task-db* #f)))))
                              (http-client#close-all-connections!)
                              ;; (if (and *runremote*
                              ;;          (remote-conndat *runremote*))
                              ;;     (begin
                              ;;       (http-client#close-all-connections!))) ;; for http-client
                              (if (not (eq? *default-log-port* (current-error-port)))
                                  (close-output-port *default-log-port*))
			      (set! *default-log-port* (current-error-port))) "Cleanup db exit thread"))
	  (th2 (make-thread (lambda ()
			      (debug:print 4 *default-log-port* "Attempting clean exit. Please be patient and wait a few seconds...")
			      (if no-hurry
                                  (begin
                                    (thread-sleep! 5)) ;; give the clean up few seconds to do it's stuff
                                  (begin
      				  (thread-sleep! 2)))
      			      (debug:print 4 *default-log-port* " ... done")
      			      )
			    "clean exit")))
      (thread-start! th1)
      (thread-start! th2)
      (thread-join! th1)
      )
    )

  0)

(define (std-signal-handler signum)
  ;; (signal-mask! signum)
  (set! *time-to-exit* #t) 
  ;;(debug:print-info 13 *default-log-port* "got signal "signum)
  (debug:print-error 0 *default-log-port* "Received signal " signum " aaa exiting promptly")
  ;; (std-exit-procedure) ;; shouldn't need this since we are exiting and it will be called anyway
  (exit))

(define (special-signal-handler signum)
  ;; (signal-mask! signum)
  (set! *time-to-exit* #t)
  ;;(debug:print-info 13 *default-log-port* "got signal "signum)
  (debug:print-error 0 *default-log-port* "Received signal " signum " sending email befor exiting!!")
  ;;TODO send email to notify admin contact listed in the config that the lisner got killed
  ;; (std-exit-procedure) ;; shouldn't need this since we are exiting and it will be called anyway
  (exit))


(set-signal-handler! signal/int  std-signal-handler)  ;; ^C
(set-signal-handler! signal/term std-signal-handler)

;; (set-signal-handler! signal/stop std-signal-handler)  ;; ^Z NO, do NOT handle ^Z!

;;======================================================================
;; M I S C   U T I L S
;;======================================================================

;; convert stuff to a number if possible
(define (any->number val)
  (cond 
   ((number? val) val)
   ((string? val) (string->number val))
   ((symbol? val) (any->number (symbol->string val)))
   (else #f)))

(define (any->number-if-possible val)
  (let ((num (any->number val)))
    (if num num val)))

(define (patt-list-match item patts)
  (debug:print-info 8 *default-log-port* "patt-list-match item=" item " patts=" patts)
  (if (and item patts)  ;; here we are filtering for matches with item patterns
      (let ((res #f))   ;; look through all the item-patts if defined, format is patt1,patt2,patt3 ... wildcard is %
	(for-each 
	 (lambda (patt)
	   (let ((modpatt (string-substitute "%" ".*" patt #t)))
	     (debug:print-info 10 *default-log-port* "patt " patt " modpatt " modpatt)
	     (if (string-match (regexp modpatt) item)
		 (set! res #t))))
	 (string-split patts ","))
	res)
      #t))

;; '(print (string-intersperse (map cadr (hash-table-ref/default (read-config "megatest.config" \#f \#t) "disks" '"'"'("none" ""))) "\n"))'
(define (common:get-disks #!key (configf #f))
  (hash-table-ref/default 
   (or configf (read-config "megatest.config" #f #t))
   "disks" '("none" "")))

;; return first command that exists, else #f
;;
(define (common:which cmds)
  (if (null? cmds)
      #f
      (let loop ((hed (car cmds))
		 (tal (cdr cmds)))
	(let ((res (with-input-from-pipe (conc "which " hed) read-line)))
	  (if (and (string? res)
		   (common:file-exists? res))
	      res
	      (if (null? tal)
		  #f
		  (loop (car tal)(cdr tal))))))))
  
(define (common:get-install-area)
  (let ((exe-path (car (argv))))
    (if (common:file-exists? exe-path)
	(handle-exceptions
	 exn
	 #f
	 (pathname-directory
	  (pathname-directory 
	   (pathname-directory exe-path))))
	#f)))

;; return first path that can be created or already exists and is writable
;;
(define (common:get-create-writeable-dir dirs)
  (if (null? dirs)
      #f
      (let loop ((hed (car dirs))
		 (tal (cdr dirs)))
	(let ((res (or (and (directory? hed)
			    (file-write-access? hed)
			    hed)
		       (handle-exceptions
			   exn
			   (begin
			     (debug:print-info 0 *default-log-port* "could not create " hed
					       ", this might cause problems down the road. exn=" exn)
			     #f)
			(create-directory hed #t)))))
	  (if (and (string? res)
		   (directory? res))
	      res
	      (if (null? tal)
		  #f
		  (loop (car tal)(cdr tal))))))))

;; return the youngest timestamp . filename
;;
(define (common:get-youngest glob-list)
  (let ((all-files (apply append
			  (map (lambda (patt)
				 (handle-exceptions
				     exn
				     '()
				   (glob patt)))
			       glob-list))))
    (fold (lambda (fname res)
	    (let ((last-mod (car res))
		  (curmod   (handle-exceptions
				exn
				0
			      (file-modification-time fname))))
	      (if (> curmod last-mod)
		  (list curmod fname)
		  res)))
	  '(0 "n/a")
	  all-files)))

;; use bash to expand a glob. Does NOT handle paths with spaces!
;;
(define (common:bash-glob instr)
  (string-split
   (with-input-from-pipe
       (conc "/bin/bash -c \"echo " instr "\"")
       read-line)))

;;======================================================================
;; Some safety net stuff
;;======================================================================

;; return input if it is a list or return null
(define (common:list-or-null inlst #!key (ovrd #f)(message #f))
  (if (list? inlst)
      inlst
      (begin
	(if message (debug:print-error 0 *default-log-port* message))
	(or ovrd '()))))
  
;;======================================================================
;; T A R G E T S  ,   S T A T E ,   S T A T U S ,   
;;                    R U N N A M E    A N D   T E S T P A T T
;;======================================================================

;; (map print (map car (hash-table->alist (read-config "runconfigs.config" #f #t))))
;;
(define (common:get-runconfig-targets #!key (configf #f))
  (let ((targs       (sort (map car (hash-table->alist
				     (or configf ;; NOTE: There is no value in using runconfig:read here.
					 (read-config (conc *toppath* "/runconfigs.config")
						      #f #t)
					 (make-hash-table))))
			   string<?))
	(target-patt (args:get-arg "-target")))
    (if target-patt
	(filter (lambda (x)
		  (patt-list-match x target-patt))
		targs)
	targs)))

;; Lookup a value in runconfigs based on -reqtarg or -target
;; 
(define (runconfigs-get config var)
  (let ((targ (common:args-get-target))) ;; (or (args:get-arg "-reqtarg")(args:get-arg "-target")(getenv "MT_TARGET"))))
    (if targ
	(or (configf:lookup config targ var)
	    (configf:lookup config "default" var))
	(configf:lookup config "default" var))))

(define (common:args-get-state)
  (or (args:get-arg "-state")(args:get-arg ":state")))

(define (common:args-get-status)
  (or (args:get-arg "-status")(args:get-arg ":status")))

(define (common:args-get-testpatt rconf)
  (let* (;; (tagexpr       (args:get-arg "-tagexpr"))
         ;; (tags-testpatt (if tagexpr (string-join (runs:get-tests-matching-tags tagexpr) ",") #f))
         (testpatt-key  (or (args:get-arg "-modepatt") (args:get-arg "--modepatt") "TESTPATT"))
         (args-testpatt (or (args:get-arg "-testpatt") (args:get-arg "-runtests") "%"))
         (rtestpatt     (if rconf (runconfigs-get rconf testpatt-key) #f)))
    (cond
     ((or (args:get-arg "--modepatt") (args:get-arg "-modepatt")) ;; modepatt is a forced setting, when set it MUST refer to an existing PATT in the runconfig
      (if rconf
	  (let* ((patts-from-mode-patt	  (runconfigs-get rconf testpatt-key)))
	    (debug:print-info 0 *default-log-port* "modepatt defined is: "testpatt-key" runconfigs values for  " testpatt-key " "  patts-from-mode-patt)
	    patts-from-mode-patt)
	  (begin
	    (debug:print-info 0 *default-log-port* " modepatt defined is: "testpatt-key" runconfigs values for  " testpatt-key) ;;  " " patts-from-mode-patt)
	    #f)))     ;; We do NOT fall back to "%"
     ;; (tags-testpatt
     ;;  (debug:print-info 0 *default-log-port* "-tagexpr "tagexpr" selects testpatt "tags-testpatt)
     ;;  tags-testpatt)
     ((and (equal? args-testpatt "%") rtestpatt)
      (debug:print-info 0 *default-log-port* "testpatt defined in "testpatt-key" from runconfigs: " rtestpatt)
      rtestpatt)
     (else 
      (debug:print-info 0 *default-log-port* "using testpatt " args-testpatt " rtestpatt:" rtestpatt)
      args-testpatt))))

(define (common:get-linktree)
  (or (getenv "MT_LINKTREE")
      (if *configdat*
	  (configf:lookup *configdat* "setup" "linktree")
	  #f)
      (if (or *toppath* (getenv "MT_RUN_AREA_HOME"))
	  (conc (or *toppath* (getenv "MT_RUN_AREA_HOME")) "/lt")
	  #f)
      (let* ((tp (common:get-toppath #f))
	     (lt (conc tp "/lt")))
	(if (not tp)(debug:print 0 *default-log-port* "WARNING: cannot calculate best path for linktree, using " lt))
	lt)))

(define (common:args-get-runname)
  (let ((res (or (args:get-arg "-runname")
		 (args:get-arg ":runname")
		 (getenv "MT_RUNNAME"))))
    ;; (if res (set-environment-variable "MT_RUNNAME" res)) ;; not sure if this is a good idea. side effect and all ...
    res))

(define (common:get-fields cfgdat)
  (let ((fields (hash-table-ref/default cfgdat "fields" '())))
    (map car fields)))

(define (common:args-get-target #!key (split #f)(exit-if-bad #f))
  (let* ((keys    (if (hash-table? *configdat*) (common:get-fields *configdat*) '()))
	 (numkeys (length keys))
	 (target  (or (args:get-arg "-reqtarg")
		      (args:get-arg "-target")
		      (getenv "MT_TARGET")))
	 (tlist   (if target (string-split target "/" #t) '()))
	 (valid   (if target
		      (or (null? keys) ;; probably don't know our keys yet
			  (and (not (null? tlist))
			       (eq? numkeys (length tlist))
			       (null? (filter string-null? tlist))))
		      #f)))
    (if valid
	(if split
	    tlist
	    target)
	(if target
	    (begin
	      (debug:print-error 0 *default-log-port* "Invalid target, spaces or blanks not allowed \"" target "\", target should be: " (string-intersperse keys "/") ", have " tlist " for elements")
	      (if exit-if-bad (exit 1))
	      #f)
	    #f))))

;; looking only (at least for now) at the MT_ variables craft the full testname
;;
(define (common:get-full-test-name)
  (if (getenv "MT_TEST_NAME")
      (if (and (getenv "MT_ITEMPATH")
               (not (equal? (getenv "MT_ITEMPATH") "")))
          (getenv "MT_TEST_NAME")
          (conc (getenv "MT_TEST_NAME") "/" (getenv "MT_ITEMPATH")))
      #f))

;; logic for getting homehost. Returns (host . at-home)
;; IF *toppath* is not set, wait up to five seconds trying every two seconds
;; (this is to accomodate the watchdog)
;;
(define (common:get-homehost #!key (trynum 5))
  ;; called often especially at start up. use mutex to eliminate collisions
  (mutex-lock! *homehost-mutex*)
  (cond
   (*home-host*
    (mutex-unlock! *homehost-mutex*)
    *home-host*)
   ((not *toppath*)
    (mutex-unlock! *homehost-mutex*)
    (launch:setup) ;; safely mutexed now
    (if (> trynum 0)
	(begin
	  (thread-sleep! 2)
	  (common:get-homehost trynum: (- trynum 1)))
	#f))
   (else
    (let* ((currhost (get-host-name))
	   (bestadrs (server:get-best-guess-address currhost))
	   ;; first look in config, then look in file .homehost, create it if not found
	   (homehost (or (configf:lookup *configdat* "server" "homehost" )
			 (handle-exceptions
			     exn
			     (if (> trynum 0)
				 (let ((delay-time (* (- 5 trynum) 5)))
				   (mutex-unlock! *homehost-mutex*)
				   (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Failed to read .homehost file, delaying "
						delay-time " seconds and trying again, message: "  ((condition-property-accessor 'exn 'message) exn)
						", exn=" exn)
				   (thread-sleep! delay-time)
				   (common:get-homehost trynum: (- trynum 1)))
				 (begin
				   (mutex-unlock! *homehost-mutex*)
				   (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)
						"] Failed to read .homehost file after trying five times. Giving up and exiting, message: "
						((condition-property-accessor 'exn 'message) exn))
				   (exit 1)))
			   (let ((hhf (conc *toppath* "/.homehost")))
			     (if (common:file-exists? hhf)
				 (with-input-from-file hhf read-line)
				 (if (file-write-access? *toppath*)
				     (begin
				       (with-output-to-file hhf
					 (lambda ()
					   (print bestadrs)))
				       (begin
					 (mutex-unlock! *homehost-mutex*)
					 (car (common:get-homehost))))
				     #f))))))
	   (at-home  (or (equal? homehost currhost)
			 (equal? homehost bestadrs))))
      (set! *home-host* (cons homehost at-home))
      (mutex-unlock! *homehost-mutex*)
      *home-host*))))

;; am I on the homehost?
;;
(define (common:on-homehost?)
  (let ((hh (common:get-homehost)))
    (if hh
	(cdr hh)
	#f)))

;; do we honor the caches of the config files?
;;
(define (common:use-cache?)
  (let ((res #t)) ;; priority by order of evaluation
    (if *configdat* ;; sillyness here. can't use setup/use-cache to know if we can use the cached files!
	(if (equal? (configf:lookup *configdat* "setup" "use-cache") "no")
	    (set! res #f)
	    (if (equal? (configf:lookup *configdat* "setup" "use-cache") "yes")
		(set! res #t))))
    (if (args:get-arg "-no-cache")(set! res #f)) ;; overrides setting in "setup"
    (if (getenv "MT_USE_CACHE")
	(if (equal? (getenv "MT_USE_CACHE") "yes")
	    (set! res #t)
	    (if (equal? (getenv "MT_USE_CACHE") "no")
		(set! res #f))))    ;; overrides -no-cache switch
    res))
  
;; force use of server?
;;
(define (common:force-server?)
  (let* ((force-setting (configf:lookup *configdat* "server" "force"))
	 (force-type    (if force-setting (string->symbol force-setting) #f))
	 (force-result  (case force-type
			  ((#f)     #f)
			  ((always) #t)
			  ((test)   (if (args:get-arg "-execute") ;; we are in a test
					#t
					#f))
			  (else
			   (debug:print 0 *default-log-port* "ERROR: Bad server force setting " force-setting ", forcing server.")
			   #t)))) ;; default to requiring server
    (if force-result
	(begin
	  (debug:print-info 0 *default-log-port* "forcing use of server, force setting is \"" force-setting "\".")
	  #t)
	#f)))

;;======================================================================
;; M I S C   L I S T S
;;======================================================================

;; items in lista are matched value and position in listb
;; return the remaining items in listb or #f
;;
(define (common:list-is-sublist lista listb)
  (if (null? lista)
      listb ;; all items in listb are "remaining"
      (if (> (length lista)(length listb)) 
	  #f
	  (let loop ((heda (car lista))
		     (tala (cdr lista))
		     (hedb (car listb))
		     (talb (cdr listb)))
	    (if (equal? heda hedb)
		(if (null? tala) ;; we are done
		    talb
		    (loop (car tala)
			  (cdr tala)
			  (car talb)
			  
			  (cdr talb)))
		#f)))))

;; Needed for long lists to be sorted where (apply max ... ) dies
;;
(define (common:max inlst)
  (let loop ((max-val (car inlst))
	     (hed     (car inlst))
	     (tal     (cdr inlst)))
    (if (not (null? tal))
	(loop (max hed max-val)
	      (car tal)
	      (cdr tal))
	(max hed max-val))))

;; get min or max, use > for max and < for min, this works around the limits on apply
;;
(define (common:min-max comp lst)
  (if (null? lst)
      #f ;; better than an exception for my needs
      (fold (lambda (a b)
	      (if (comp a b) a b))
	    (car lst)
	    lst)))

;; get min or max, use > for max and < for min, this works around the limits on apply
;;
(define (common:sum lst)
  (if (null? lst)
      0
      (fold (lambda (a b)
	      (+ a b))
	    (car lst)
	    lst)))

;; path list to hash-table tree
;;   ((a b c)(a b d)(e b c)) => ((a (b (d) (c))) (e (b (c))))
;;
(define (common:list->htree lst)
  (let ((resh (make-hash-table)))
    (for-each
     (lambda (inlst)
       (let loop ((ht  resh)
		  (hed (car inlst))
		  (tal (cdr inlst)))
	 (if (hash-table-ref/default ht hed #f)
	     (if (not (null? tal))
		 (loop (hash-table-ref ht hed)
		       (car tal)
		       (cdr tal)))
	     (begin
	       (hash-table-set! ht hed (make-hash-table))
	       (loop ht hed tal)))))
     lst)
    resh))

;; hash-table tree to html list tree
;;
;;   tipfunc takes two parameters: y the tip value and path the path to that point
;;
(define (common:htree->html ht path tipfunc)
  (let ((datlist 	(sort (hash-table->alist ht)
                              (lambda (a b)
                                (string< (car a)(car b))))))
    (if (null? datlist)
    	(tipfunc #f path) ;; really shouldn't get here
	(s:ul
	 (map (lambda (x)
		(let* ((levelname (car x))
		       (y         (cdr x))
		       (newpath   (append path (list levelname)))
		       (leaf      (or (not (hash-table? y))
				      (null? (hash-table-keys y)))))
		  (if leaf
		      (s:li (tipfunc y newpath))
		      (s:li
		       (list 
			levelname
			(common:htree->html y newpath tipfunc))))))
	      datlist)))))

;; hash-table tree to alist tree
;;
(define (common:htree->atree ht)
  (map (lambda (x)
	 (cons (car x)
	       (let ((y (cdr x)))
		 (if (hash-table? y)
		     (common:htree->atree y)
		     y))))
       (hash-table->alist ht)))

;;======================================================================
;; M U N G E   D A T A   I N T O   N I C E   F O R M S
;;======================================================================

;; Generate an index for a sparse list of key values
;;   ( (rowname1 colname1 val1)(rowname2 colname2 val2) )
;;
;; => 
;;
;;   ( (rowname1 0)(rowname2 1))    ;; rownames -> num
;;     (colname1 0)(colname2 1)) )  ;; colnames -> num
;; 
;; optional apply proc to rownum colnum value
(define (common:sparse-list-generate-index data #!key (proc #f))
  (if (null? data)
      (list '() '())
      (let loop ((hed (car data))
		 (tal (cdr data))
		 (rownames '())
		 (colnames '())
		 (rownum   0)
		 (colnum   0))
	(let* ((rowkey          (car   hed))
	       (colkey          (cadr  hed))
	       (value           (caddr hed))
	       (existing-rowdat (assoc rowkey rownames))
	       (existing-coldat (assoc colkey colnames))
	       (curr-rownum     (if existing-rowdat rownum (+ rownum 1)))
	       (curr-colnum     (if existing-coldat colnum (+ colnum 1)))
	       (new-rownames    (if existing-rowdat rownames (cons (list rowkey curr-rownum) rownames)))
	       (new-colnames    (if existing-coldat colnames (cons (list colkey curr-colnum) colnames))))
	  ;; (debug:print-info 0 *default-log-port* "Processing record: " hed )
	  (if proc (proc curr-rownum curr-colnum rowkey colkey value))
	  (if (null? tal)
	      (list new-rownames new-colnames)
	      (loop (car tal)
		    (cdr tal)
		    new-rownames
		    new-colnames
		    (if (> curr-rownum rownum) curr-rownum rownum)
		    (if (> curr-colnum colnum) curr-colnum colnum)
		    ))))))

;; if it looks like a number -> convert it to a number, else return it
;;
(define (common:lazy-convert inval)
  (let* ((as-num (if (string? inval)(string->number inval) #f)))
    (or as-num inval)))

;; convert string a=1; b=2; c=a silly thing; d=
;; to '((a . 1)(b . 2)(c . "a silly thing")(d . ""))
;;
(define (common:val->alist val #!key (convert #f))
  (let ((val-list (string-split-fields ";\\s*" val #:infix)))
    (if val-list
	(map (lambda (x)
	       (let ((f (string-split-fields "\\s*=\\s*" x #:infix)))
		 (case (length f)
		   ((0) `(,#f))  ;; null string case
		   ((1) `(,(string->symbol (car f))))
		   ((2) `(,(string->symbol (car f)) . ,(let ((inval (cadr f)))
							 (if convert (common:lazy-convert inval) inval))))
		   (else f))))
	     val-list)
	'())))

;;======================================================================
;; S Y S T E M   S T U F F
;;======================================================================

;; return a nice clean pathname made absolute
(define (common:nice-path dir)
  (let ((match (string-match "^(~[^\\/]*)(\\/.*|)$" dir)))
    (if match ;; using ~ for home?
	(common:nice-path (conc (common:read-link-f (cadr match)) "/" (caddr match)))
	(normalize-pathname (if (absolute-pathname? dir)
				dir
				(conc (current-directory) "/" dir))))))

;; make "nice-path" available in config files and the repl
(define nice-path common:nice-path)

(define (common:read-link-f path)
  (handle-exceptions
      exn
      (begin
	(debug:print-error 0 *default-log-port* "command \"/bin/readlink -f " path "\" failed. exn=" exn)
	path) ;; just give up
    (with-input-from-pipe
	(conc "/bin/readlink -f " path)
      (lambda ()
	(read-line)))))

;; returns *effective load* (not normalized)
;;
(define (common:get-intercept onemin fivemin)
  (if (< onemin fivemin) ;; load is decreasing, just use the onemin load
      onemin
      (let* ((load-change (- onemin fivemin))
	     (tchange     (- 300 60)))
	(max (+ onemin (* 60 (/ load-change tchange))) 0))))

;; calculate a delay number based on a droop curve
;;    inputs are:
;;      - load-in, load as from uptime, NOT normalized
;;      - numcpus, number of cpus, ideally use the real cpus, not threads
;;
(define (common:get-delay load-in numcpus)
  (let* ((ratio (/ load-in numcpus))
         (new-option (configf:lookup *configdat* "load" "new-load-method"))
	 (paramstr   (or (configf:lookup *configdat* "load" "exp-params")
			 "15 12 1281453987.9543 0.75")) ;; 5 4 10 1"))
	 (paramlst   (map string->number (string-split paramstr))))
    (if new-option
	(begin
          (cond ((and (>= ratio 0) (< ratio .5))
		 0)
		((and (>= ratio 0.5) (<= ratio .9))
		 (* ratio (/ 5 .9)))
		((and (> ratio .9) (<= ratio 1.1))
		 (+ 5 (* (- ratio .9) (/ 55 .2)))) 
		((> ratio 1.1)
		 60)))
	(match paramlst
	  ((r1 r2 s1 s2)
	   (debug:print 3 *default-log-port* "Using params r1=" r1 " r2=" r2 " s1=" s1 " s2=" s2)
	   (min (max (/ (expt r1 (* r2 s2 ratio)) s1) 0) 30))
	  (else
	   (debug:print 0 *default-log-port* "BAD exp-params, should be \"r1 r2 s1 s2\" but got " paramstr)
	   30)))))

(define (common:print-delay-table)
  (let loop ((x 0))
    (print x "," (common:get-delay x 1))
    (if (< x 2)
	(loop (+ x 0.1)))))

(define (get-cpu-load #!key (remote-host #f))
  (car (common:get-cpu-load remote-host)))
;;   (let* ((load-res (process:cmd-run->list "uptime"))
;; 	 (load-rx  (regexp "load average:\\s+(\\d+)"))
;; 	 (cpu-load #f))
;;     (for-each (lambda (l)
;; 		(let ((match (string-search load-rx l)))
;; 		  (if match
;; 		      (let ((newval (string->number (cadr match))))
;; 			(if (number? newval)
;; 			    (set! cpu-load newval))))))
;; 	      (car load-res))
;;     cpu-load))

;; get values from cached info from dropping file in logs dir
;;  e.g. key is host and dtype is normalized-load
;;
(define (common:get-cached-info key dtype #!key (age 10))
  (if *toppath*
      (let* ((fullpath (conc *toppath* "/.sysdata/" key "-" dtype ".log"))
	     (delfile  (lambda ()
			 (debug:print-info 1 *default-log-port* " removing bad file " fullpath ", exn=" exn)
			 (delete-file* fullpath)
			 #f)))
	(if (and (file-exists? fullpath)
		 (file-read-access? fullpath))
	    (handle-exceptions
		exn
	      (begin
		(debug:print 0 *default-log-port* "failed to get cached info from " fullpath ", exn=" exn)
		#f)
	     (debug:print 2 *default-log-port* "reading file " fullpath)
	     (let ((real-age (- (current-seconds)
				(handle-exceptions
				    exn
				  (begin
				    (debug:print 1 *default-log-port* "Failed to read mod time on file "
						 fullpath ", using 0, exn=" exn)
				    0)
				  (file-change-time fullpath)))))
	       (if (< real-age age)
		   (handle-exceptions
		       exn
		     (delfile)
		     (let* ((res (with-input-from-file fullpath read)))
		       (if (eof-object? res)
			   (begin
			     (delfile)
			     #f)
			   res)))
		   (begin
		     (debug:print-info 2 *default-log-port* "file " fullpath
				       " is too old (" real-age" seconds) to trust, skipping reading it")
		     #f))))
	    (begin
	      (debug:print 2 *default-log-port* "not reading file " fullpath)
	      #f)))
      #f))
 
(define (common:write-cached-info key dtype dat)
  (if *toppath*
      (let* ((fulldir  (conc *toppath* "/.sysdata"))
	     (fullpath (conc fulldir "/" key "-" dtype ".log")))
	(if (not (file-exists? fulldir))(create-directory fulldir #t))
	(handle-exceptions
	    exn
	  (begin
	    (debug:print 0 *default-log-path* "failed to write file " fullpath ", exn=" exn)
	    #f)
	  (with-output-to-file fullpath (lambda ()(pp dat)))))
      #f))

(define (common:raw-get-remote-host-load remote-host)
  (handle-exceptions
      exn
    (begin
      (debug:print 0 *default-log-port* "failed to ssh to " remote-host " and get loadavg. exn=" exn)
      #f) ;; more specific handling of errors needed
    (with-input-from-pipe 
     (conc "ssh " remote-host " cat /proc/loadavg")
     (lambda ()(list (read)(read)(read))))))

;; get cpu load by reading from /proc/loadavg, return all three values
;;
(define (common:get-cpu-load remote-host)
  (handle-exceptions
      exn
    (begin
      (debug:print 0 *default-log-port* "failed to ssh or read loadavg from host " remote-host ", exn=" exn)
      '(-99 -99 -99))
    (let* ((actual-hostname (or remote-host (get-host-name) "localhost")))
      (or (common:get-cached-info actual-hostname "cpu-load")
	  (let ((result (if remote-host
			    (map (lambda (res)
				   (if (eof-object? res) 9e99 res))
			         (with-input-from-pipe 
				  (conc "ssh " remote-host " cat /proc/loadavg")
				  (lambda ()(list (read)(read)(read)))))
			    (with-input-from-file "/proc/loadavg" 
			      (lambda ()(list (read)(read)(read)))))))
	    (match
		result
	      ((l1 l2 l3)
	       (if (and (number? l1)
		      (number? l2)
		      (number? l3))
		   (begin
		     (common:write-cached-info actual-hostname "cpu-load" result)
		     result)
		   '(-1 -1 -1))) ;; -1 is bad result
	      (else '(-2 -2 -2))))))))

;; get normalized cpu load by reading from /proc/loadavg and /proc/cpuinfo return all three values and the number of real cpus and the number of threads
;; returns alist '((adj-cpu-load . normalized-proc-load) ... etc.
;;  keys: adj-proc-load, adj-core-load, 1m-load, 5m-load, 15m-load
;;
(define (common:get-normalized-cpu-load remote-host)
  (let ((res (common:get-normalized-cpu-load-raw remote-host))
	(default `((adj-proc-load . 2) ;; there is no right answer
		   (adj-core-load . 2)
		   (1m-load       . 2)
		   (5m-load       . 0) ;; causes a large delta - thus causing default of throttling if stuff goes wrong
		   (15m-load      . 0)
		   (proc          . 1)
		   (core          . 1)
		   (phys          . 1)
		   (error         . #t))))
    (cond
     ((and (list? res)
	   (> (length res) 2))
      res)
     ((eq? res #f)   default) ;; add messages?
     ((eq? res #f) default)   ;; this would be the #eof
     (else default))))

(define (common:get-normalized-cpu-load-raw remote-host)
  (let* ((actual-host (or remote-host (get-host-name)))) ;; #f is localhost
    (or (common:get-cached-info actual-host "normalized-load")
	(let ((data (if remote-host
			(with-input-from-pipe 
			    (conc "ssh " remote-host " \"cat /proc/loadavg;cat /proc/cpuinfo;echo end\"")
			  read-lines)
			(append 
			 (with-input-from-file "/proc/loadavg" 
			   read-lines)
			 (with-input-from-file "/proc/cpuinfo"
			   read-lines)
			 (list "end"))))
	      (load-rx  (regexp "^([\\d\\.]+)\\s+([\\d\\.]+)\\s+([\\d\\.]+)\\s+.*$"))
	      (proc-rx  (regexp "^processor\\s+:\\s+(\\d+)\\s*$"))
	      (core-rx  (regexp "^core id\\s+:\\s+(\\d+)\\s*$"))
	      (phys-rx  (regexp "^physical id\\s+:\\s+(\\d+)\\s*$"))
	      (max-num  (lambda (p n)(max (string->number p) n))))
	  ;; (print "data=" data)
	  (if (null? data) ;; something went wrong
	      #f
	      (let loop ((hed      (car data))
			 (tal      (cdr data))
			 (loads    #f)
			 (proc-num 0)  ;; processor includes threads
			 (phys-num 0)  ;; physical chip on motherboard
			 (core-num 0)) ;; core
		;;; (print hed ", " loads ", " proc-num ", " phys-num ", " core-num)
		(if (null? tal) ;; have all our data, calculate normalized load and return result
		    (let* ((act-proc (+ proc-num 1))
			   (act-phys (+ phys-num 1))
			   (act-core (+ core-num 1))
			   (adj-proc-load (/ (car loads) act-proc))
			   (adj-core-load (/ (car loads) act-core))
			   (result
			    (append (list (cons 'adj-proc-load adj-proc-load)
					  (cons 'adj-core-load adj-core-load))
				    (list (cons '1m-load (car loads))
					  (cons '5m-load (cadr loads))
					  (cons '15m-load (caddr loads)))
				    (list (cons 'proc act-proc)
					  (cons 'core act-core)
					  (cons 'phys act-phys)))))
		      (common:write-cached-info actual-host "normalized-load" result)
		      result)
		  (regex-case
		   hed
		   (load-rx  ( x l1 l5 l15 ) (loop (car tal)(cdr tal)(map string->number (list l1 l5 l15)) proc-num phys-num core-num))
		   (proc-rx  ( x p         ) (loop (car tal)(cdr tal) loads           (max-num p proc-num) phys-num core-num))
		   (phys-rx  ( x p         ) (loop (car tal)(cdr tal) loads           proc-num (max-num p phys-num) core-num))
		   (core-rx  ( x c         ) (loop (car tal)(cdr tal) loads           proc-num phys-num (max-num c core-num)))
		   (else 
		    (begin
		      ;; (print "NO MATCH: " hed)
		      (loop (car tal)(cdr tal) loads proc-num phys-num core-num)))))))))))

(define (common:unix-ping hostname)
  (let ((res (system (conc "ping -c 1 " hostname " > /dev/null"))))
    (eq? res 0)))

;; ideally put all this info into the db, no need to preserve it across moving homehost
;;
;; return list of
;;  ( reachable? cpuload update-time )
(define (common:get-host-info hostname)
  (let* ((loadinfo                         (rmt:get-latest-host-load hostname)) ;; if this host happens to have been recently used by a test reuse the load data
         (load                             (car loadinfo))
         (load-sample-time                 (cdr loadinfo))
         (load-sample-age                  (- (current-seconds) load-sample-time))
         (loadinfo-timeout-seconds         6) ;; this was 20 seconds, seems way too lax. Switch to 6 seconds
         (host-last-update-timeout-seconds 4)
         (host-rec (hash-table-ref/default *host-loads* hostname #f))
         )
    (cond
     ((< load-sample-age loadinfo-timeout-seconds)
      (list #t
            load-sample-time
            load))
     ((and host-rec
           (< (current-seconds) (+ (host-last-update host-rec) host-last-update-timeout-seconds)))
      (list #t
            (host-last-update host-rec)
            (host-last-cpuload host-rec )))
     ((common:unix-ping hostname)
      (list #t
            (current-seconds)
            (alist-ref 'adj-core-load (common:get-normalized-cpu-load hostname)))) ;; this is cheaper than you might think. get-normalized-cpu-load is cached for up to 5 seconds
     (else
      (list #f 0 -1) ;; bad host, don't use!
      ))))

;; see defstruct host at top of file.
;;    host: reachable last-update last-used last-cpuload
;;
(define (common:update-host-loads-table hosts-raw)
  (let* ((hosts (filter (lambda (x)
                          (string-match (regexp "^\\S+$") x))
                        hosts-raw)))
    (for-each
     (lambda (hostname)
       (let* ((rec       (let ((h (hash-table-ref/default *host-loads* hostname #f)))
                          (if h
                              h
                              (let ((h (make-host)))
                                (hash-table-set! *host-loads* hostname h)
                                h))))
              (host-info         (common:get-host-info hostname))
              (is-reachable      (car host-info))
              (last-reached-time (cadr host-info))
              (load              (caddr host-info)))
         (host-reachable-set!    rec is-reachable)
         (host-last-update-set!  rec last-reached-time)
         (host-last-cpuload-set! rec load)))
     hosts)))

;; go through the hosts from least recently used to most recently used, pick the first that meets the load criteral from the
;; [host-rules] section.
;;
(define (common:get-least-loaded-host hosts-raw host-type configdat)
  (let* ((rdat       (configf:lookup configdat "host-rules" host-type))
	 (rules      (common:val->alist (or rdat "") convert: #t))   ;; maxnload, maxnjobs, maxjobrate
	 (maxnload   (common:alist-ref/default 'maxnload rules 1.5)) ;; max normalized load
	 (maxnjobs   (common:alist-ref/default 'maxnjobs rules 1.5)) ;; max normalized number of jobs
	 (maxjobrate (common:alist-ref/default 'maxjobrate rules (/ 1 6))) ;; max rate of submitting jobs to a given host in jobs/second
	 (hosts      (filter (lambda (x)
			       (string-match (regexp "^\\S+$") x))
			     hosts-raw))
         ;; (best-host #f)
	 (get-rec    (lambda (hostname)
		       ;; (print "get-rec hostname=" hostname)
		       (let ((h (hash-table-ref/default *host-loads* hostname #f)))
			 (if h
			     h
			     (let ((h (make-host)))
			       (hash-table-set! *host-loads* hostname h)
			       h)))))
         (best-load 99999)
         (curr-time (current-seconds))
	 (get-hosts-sorted (lambda (hosts)
			     (sort hosts (lambda (a b)
					   (let ((a-rec (get-rec a))
						 (b-rec (get-rec b)))
					     ;; (print "a=" a " a-rec=" a-rec " host-last-used=" (host-last-used a-rec))
					     ;; (print "b=" b " b-rec=" b-rec " host-last-used=" (host-last-used b-rec))
					     (< (host-last-used a-rec)
						(host-last-used b-rec))))))))
    (debug:print 0 *default-log-port* "INFO: hosts-sorted=" (get-hosts-sorted hosts))
    (if (null? hosts)
	#f ;; no hosts to select from. All done and giving up now.
	(let ((hosts-sorted (get-hosts-sorted hosts)))
	  (common:update-host-loads-table hosts)
	  (let loop ((hostname  (car hosts-sorted))
		     (tal       (cdr hosts-sorted))
		     (best-host #f))
	    (let* ((rec       (get-rec hostname))
		   (reachable (host-reachable     rec))
		   (load      (host-last-cpuload  rec))
		   (last-used (host-last-used     rec))
		   (delta     (- curr-time last-used))
		   (job-rate  (if (> delta 0)
				  (/ 1 delta)
				  999)) ;; jobs per second
		   (new-best  
		    (cond
		     ((not reachable)
		      (debug:print 0 *default-log-port* "Skipping host " hostname " as it cannot be reached.")
		      best-host)
		     ((and (< load maxnload)        ;; load is acceptable
			   (< job-rate maxjobrate)) ;; job rate is acceptable
		      (set! best-load load)
		      hostname)
		     (else best-host))))
	      (debug:print 0 *default-log-port* "INFO: Trying host " hostname " with load " load ", last used " delta " seconds ago, with job-rate " job-rate " for running a test." )
	      (if new-best
		  (begin ;; found a host, return it
		    (debug:print 0 *default-log-port* "INFO: Found host: " new-best " load: " load " last-used: " delta " seconds ago, with job-rate: " job-rate)
		    (host-last-used-set! rec curr-time)
		    new-best)
		  (if (null? tal) #f (loop (car tal)(cdr tal) best-host)))))))))

(define (common:wait-for-homehost-load maxnormload msg)
  (let* ((hh-dat (if (common:on-homehost?) ;; if we are on the homehost then pass in #f so the calls are local.
                     #f
                     (common:get-homehost)))
         (hh     (if hh-dat (car hh-dat) #f)))
    (common:wait-for-normalized-load maxnormload msg hh)))

(define *numcpus-cache* (make-hash-table))
(define (common:get-num-cpus remote-host)
  (let* ((actual-host (or remote-host (get-host-name))))
    ;; hosts had better not be changing the number of cpus too often!
    (or (hash-table-ref/default *numcpus-cache* actual-host #f)
	(let* ((numcpus (or (common:get-cached-info actual-host "num-cpus" age: (+ 2592000 (random 3600)))
			    (let* ((proc   (lambda ()
					     (let loop ((numcpu 0)
							(inl    (read-line)))
					       (if (eof-object? inl)
						   (if (> numcpu 0)
						       numcpu
						       #f) ;; if zero return #f so caller knows that things are not working
						   (loop (if (string-match "^processor\\s+:\\s+\\d+$" inl)
							     (+ numcpu 1)
							     numcpu)
							 (read-line))))))
				   (result (if remote-host
					       (with-input-from-pipe 
						(conc "ssh " remote-host " cat /proc/cpuinfo")
						proc)
					       (with-input-from-file "/proc/cpuinfo" proc))))
			      (if (and (number? result)
				       (> result 0))
				  (common:write-cached-info actual-host "num-cpus" result))
			      result))))
	  (hash-table-set! *numcpus-cache* actual-host numcpus)
	  numcpus))))

;; wait for normalized cpu load to drop below maxload
;;
(define (common:wait-for-normalized-load maxnormload msg remote-host #!optional (rem-tries 5))
  (let ((num-cpus (common:get-num-cpus remote-host)))
    (if num-cpus
	(common:wait-for-cpuload maxnormload num-cpus 15 msg: msg remote-host: remote-host)
	(begin
	  (thread-sleep! (random 60)) ;; we failed to get num cpus. wait a bit and try again
	  (if (> rem-tries 0)
	      (common:wait-for-normalized-load maxnormload msg remote-host (- rem-tries 1))
	      #f)))))

;; DO NOT CALL THIS DIRECTLY. It is called from common:wait-for-normalized-load
;;   count     - count down to zero, at some point we'd give up if the load never drops
;;   num-tries - count down to zero number tries to get numcpus
;;
(define (common:wait-for-cpuload maxnormload numcpus-in
				 #!key (count 1000)
				 (msg #f)(remote-host #f)(num-tries 5))
  (let* ((loadavg     (common:get-cpu-load remote-host))
	  ;; not possible to have zero.  If we get 1, it's possible that we got the previous default, and we should check again
	 (numcpus     (if (<= 1 numcpus-in)
			  (common:get-num-cpus remote-host)
			  numcpus-in))
	 (first       (car loadavg))
	 (next        (cadr loadavg))
	 (adjmaxload  (* maxnormload (max 1 numcpus))) ;; possible bug
						   ;; where numcpus
						   ;; (or could be
						   ;; maxload) is
						   ;; zero, crude
						   ;; fallback is to
						   ;; at least use 1
	 ;; effective load accounts for load jumps, this should elminate all the first-next-avg, adjwait, load-jump-limit
	 ;; etc.
	 (effective-load    (common:get-intercept first next))
	 (recommended-delay (common:get-delay effective-load numcpus))
	 (effective-host    (or remote-host "localhost"))
	 (normalized-effective-load (/ effective-load numcpus))
	 (will-wait                 (> normalized-effective-load maxnormload)))
    (if (> recommended-delay 0)
	(let* ((actual-delay (min recommended-delay 30)))
	  (if (common:low-noise-print 30 (conc (round actual-delay) "-safe-load"))
	      (debug:print-info 0 *default-log-port* "Load control, delaying "
				actual-delay " seconds to maintain safe load. current normalized effective load is "
				normalized-effective-load"."))
	  (thread-sleep! actual-delay)))
    
    (cond
     ;; bad data, try again to get the data
     ((not will-wait)
      (if (common:low-noise-print 30 (conc (round normalized-effective-load) "-load-acceptable-" effective-host))
	  (debug:print 0 *default-log-port* "Effective load on " effective-host " is acceptable at " effective-load " continuing.")))
     ((and (< first 0) ;; this indicates the loadavg data is bad - machine may not be reachable
	   (> num-tries 0))
      (debug:print 0 *default-log-port* "WARNING: received bad data from get-cpu-load "
		   first ", we'll sleep 10s and try " num-tries " more times.")
      (thread-sleep! 10)
      (common:wait-for-cpuload maxnormload numcpus-in
			       count: count remote-host: remote-host num-tries: (- num-tries 1)))
     ;; need to wait for load to drop
     ((and will-wait ;; (> first adjmaxload)
	   (> count 0))
      (debug:print-info 0 *default-log-port*
			"Delaying 15" ;; adjwait
			" seconds due to normalized effective load " normalized-effective-load ;; first
			" exceeding max of " adjmaxload
			" on server " (or remote-host (get-host-name))
			" (normalized load-limit: " maxnormload ") " (if msg msg ""))
      (thread-sleep! 15) ;; adjwait)
      (common:wait-for-cpuload maxnormload numcpus count: (- count 1) msg: msg remote-host: remote-host)
      ;; put the message here to indicate came out of waiting
      (debug:print-info 1 *default-log-port*
			"On host: " effective-host
			", effective load: " effective-load
			", numcpus: " numcpus
			", normalized effective load: " normalized-effective-load
			))
     ;; overloaded and count expired (i.e. went to zero)
     (else
      (if (> num-tries 0) ;; should be "num-tries-left". 
	  (if (common:low-noise-print 30 (conc (round effective-load) "-load-acceptable-" effective-host))
	      (debug:print 0 *default-log-port* "Load on " effective-host " is acceptable at effective normalized load of "
			   effective-normalized-load "  continuing."))
	  (debug:print 0 *default-log-port* "Load on " effective-host ", "
		       first" could not be retrieved. Giving up and continuing."))))))

;; DO NOT CALL THIS DIRECTLY. It is called from common:wait-for-normalized-load
;;
;; (define (common:wait-for-cpuload maxload-in numcpus-in waitdelay #!key (count 1000) (msg #f)(remote-host #f)(force-maxload #f)(num-tries 5))
;;   (let* ((loadavg (common:get-cpu-load remote-host))
;; 	 (numcpus (if (<= 1 numcpus-in) ;; not possible to have zero.  If we get 1, it's possible that we got the previous default, and we should check again
;; 		      (common:get-num-cpus remote-host)
;; 		      numcpus-in))
;; 	 (maxload (if force-maxload
;; 		      maxload-in
;; 		      (if (number? maxload-in)
;; 			  (max maxload-in 0.5)
;; 			  0.5))) ;; so maxload must be greater than 0.5 for now BUG - FIXME?
;; 	 (first   (car loadavg))
;; 	 (next    (cadr loadavg))
;; 	 (adjmaxload (* maxload (max 1 numcpus))) ;; possible bug where
;; 					       ;; numcpus (or could be
;; 					       ;; maxload) is zero,
;; 					       ;; crude fallback is to
;; 					       ;; at least use 1
;; 	 (loadjmp (- first (if (> next (* numcpus 0.7)) ;; could do something with average of first and next?
;; 			       0
;; 			       next))) ;; we will force a conservative calculation any time next is large.
;; 	 (first-next-avg    (/ (+ first next) 2))
;; 	 ;; add some randomness to the time to break any alignment
;; 	 ;; where netbatch dumps many jobs to machines simultaneously
;;          (adjwait           (min (+ 300 (random 10)) (abs (* (+ (random 10)
;; 								(/ (- 1000 count) 10)
;; 								waitdelay)
;; 							     (- first adjmaxload) ))))
;; 	 (load-jump-limit   (configf:lookup-number *configdat* "setup" "load-jump-limit"))
;; 	 ;; effective load accounts for load jumps, this should elminate all the first-next-avg, adjwait, load-jump-limit
;; 	 ;; etc.
;; 	 (effective-load    (common:get-intercept first next))
;; 	 (effective-host    (or remote-host "localhost"))
;; 	 (normalized-effective-load (/ effective-load numcpus))
;; 	 (will-wait                 (> normalized-effective-load maxload)))
;; 	 
;;     ;; let's let the user know once in a long while that load checking
;;     ;; is happening but not constantly report it
;;     #;(if (common:low-noise-print 30 (conc "cpuload" (or remote-host "localhost"))) ;; (> (random 100) 75) ;; about 25% of the time
;; 	(debug:print-info 1 *default-log-port* "Checking cpuload on " (or remote-host "localhost") ", maxload: " maxload
;;     ", load: " first ", adjmaxload: " adjmaxload ", loadjmp: " loadjmp))
;; 
;;     (debug:print-info 1 *default-log-port*
;; 		      "On host: " effective-host
;; 		      ", effective load: " effective-load
;; 		      ", numcpus: " numcpus
;; 		      ", normalized effective load: " normalized-effective-load
;; 		      )
;;     
;;     (cond
;;      ;; bad data, try again to get the data
;;      ((and (< first 0) ;; this indicates the loadavg data is bad - machine may not be reachable
;; 	   (> num-tries 0))
;;       (debug:print 0 *default-log-port* "WARNING: received bad data from get-cpu-load " first ", we'll sleep 10s and try " num-tries " more times.")
;;       (thread-sleep! 10)
;;       (common:wait-for-cpuload maxload-in numcpus-in waitdelay
;; 			       count: count remote-host: remote-host force-maxload: force-maxload num-tries: (- num-tries 1)))
;;      ;; need to wait for load to drop
;;      ((and will-wait ;; (> first adjmaxload)
;; 	   (> count 0))
;;       (debug:print-info 0 *default-log-port*
;; 			"Delaying " 15 ;; adjwait
;; 			" seconds due to normalized effective load " normalized-effective-load ;; first
;; 			" exceeding max of " adjmaxload
;; 			" on server " (or remote-host (get-host-name))
;; 			" (normalized load-limit: " maxload ") " (if msg msg ""))
;;       (thread-sleep! 15) ;; adjwait)
;;       (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
;;      ((and (> loadjmp (cond
;; 		       (load-jump-limit load-jump-limit)
;; 		       ((> numcpus 8)(/ numcpus 2))
;; 		       ((> numcpus 4)(/ numcpus 1.2))
;; 		       (else 0.5)))
;; 	   (> count 0))
;;       (debug:print-info 0 *default-log-port* "waiting " adjwait " seconds due to possible load jump " loadjmp ". "
;; 			(if msg msg ""))
;;       (thread-sleep! adjwait)
;;       (common:wait-for-cpuload maxload numcpus waitdelay count: (- count 1) msg: msg remote-host: remote-host))
;;      (else
;;       (if (> num-tries 0)
;; 	  (if (common:low-noise-print 30 (conc (round first) "-load-acceptable-" (or remote-host "localhost")))
;; 	      (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") " is acceptable at " first " continuing."))
;; 	  (debug:print 0 *default-log-port* "Load on " (or remote-host "localhost") ", "first" could not be retrieved. Giving up and continuing."))))))
;; 
(define (get-uname . params)
  (let* ((uname-res (process:cmd-run->list (conc "uname " (if (null? params) "-a" (car params)))))
	 (uname #f))
    (if (null? (car uname-res))
	"unknown"
	(caar uname-res))))

;; for reasons I don't understand multiple calls to real-path in parallel threads
;; must be protected by mutexes
;;
(define (common:real-path inpath)
  ;; (process:cmd-run-with-stderr->list "readlink" "-f" inpath)) ;; cmd . params)
  ;; (let-values 
  ;;  (((inp oup pid) (process "readlink" (list "-f" inpath))))
  ;;  (with-input-from-port inp
  ;;    (let loop ((inl (read-line))
  ;;       	(res #f))
  ;;      (print "inl=" inl)
  ;;      (if (eof-object? inl)
  ;;          (begin
  ;;            (close-input-port inp)
  ;;            (close-output-port oup)
  ;;            ;; (process-wait pid)
  ;;            res)
  ;;          (loop (read-line) inl))))))
  (with-input-from-pipe (conc "readlink -f " inpath) read-line))

;;======================================================================
;; D I S K   S P A C E 
;;======================================================================

(define (common:get-disk-space-used fpath)
  (with-input-from-pipe (conc "/usr/bin/du -s " fpath) read))

;; given path get free space, allows override in [setup]
;; with free-space-script /path/to/some/script.sh
;;
(define (get-df path)
  (if (configf:lookup *configdat* "setup" "free-space-script")
      (with-input-from-pipe 
       (conc (configf:lookup *configdat* "setup" "free-space-script") " " path)
       (lambda ()
	 (let ((res (read-line)))
	   (if (string? res)
	       (string->number res)))))
      (get-unix-df path)))

(define (get-free-inodes path)
  (if (configf:lookup *configdat* "setup" "free-inodes-script")
      (with-input-from-pipe 
	  (conc (configf:lookup *configdat* "setup" "free-inodes-script") " " path)
	(lambda ()
	  (let ((res (read-line)))
	    (if (string? res)
		(string->number res)))))
      (get-unix-inodes path)))

(define (get-unix-df path)
  (let* ((df-results (process:cmd-run->list (conc "df " path)))
	 (space-rx   (regexp "([0-9]+)\\s+([0-9]+)%"))
	 (freespc    #f))
    ;; (write df-results)
    (for-each (lambda (l)
		(let ((match (string-search space-rx l)))
		  (if match 
		      (let ((newval (string->number (cadr match))))
			(if (number? newval)
			    (set! freespc newval))))))
	      (car df-results))
    freespc))

(define (get-unix-inodes path)
  (let* ((df-results (process:cmd-run->list (conc "df -i " path)))
	 (space-rx   (regexp "([0-9]+)\\s+([0-9]+)%"))
	 (freenodes    0)) ;; 0 is a better failsafe than #f here.
    ;; (write df-results)
    (for-each (lambda (l)
		(let ((match (string-search space-rx l)))
		  (if match 
		      (let ((newval (string->number (cadr match))))
			(if (number? newval)
			    (set! freenodes newval))))))
	      (car df-results))
    freenodes))

(define (common:check-space-in-dir dirpath required)
  (let* ((dbspace  (if (directory? dirpath)
		       (get-df dirpath)
		       0)))
    (list (> dbspace required)
	  dbspace
	  required
	  dirpath)))

;; check space in dbdir and in megatest dir
;; returns: ok/not dbspace required-space
;;
(define (common:check-db-dir-space)
  (let* ((required (string->number 
                    ;; default is 1GB (or actually a billion bytes) This is the number of 1 kB blocks.
		    (or (configf:lookup *configdat* "setup" "dbdir-space-required")
			"1000000")))
	 (dbdir    (common:get-db-tmp-area)) ;; (db:get-dbdir))
	 (tdbspace (common:check-space-in-dir dbdir required))
	 (mdbspace (common:check-space-in-dir *toppath* required)))
    (sort (list tdbspace mdbspace) (lambda (a b)
				     (< (cadr a)(cadr b))))))
    
;; check available space in dbdir, exit if insufficient
;;
(define (common:check-db-dir-and-exit-if-insufficient)
  (let* ((spacedat (car (common:check-db-dir-space))) ;; look only at worst for now
	 (is-ok    (car spacedat))
	 (dbspace  (cadr spacedat))
	 (required (caddr spacedat))
	 (dbdir    (cadddr spacedat)))
    (if (not is-ok)
	(begin
	  (debug:print-error 0 *default-log-port* "Insufficient space in " dbdir ", require " required ", have " dbspace  ", exiting now.")
	  (exit 1)))))
  
;; paths is list of lists ((name path) ... )
;;
(define (common:get-disk-with-most-free-space disks minsize)
  (let* ((best     #f)
	(bestsize 0)
        (default-min-inodes-string "1000000")
        (default-min-inodes (string->number default-min-inodes-string))
        (min-inodes (or (string->number (if (configf:lookup *configdat* "setup" "min_inodes") (configf:lookup *configdat* "setup" "min_inodes") default-min-inodes-string)) default-min-inodes)))

    (for-each 
     (lambda (disk-num)
       (let* ((dirpath    (cadr (assoc disk-num disks)))
	      (freespc    (cond
			   ((not (directory? dirpath))
			    (if (common:low-noise-print 300 "disks not a dir " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a directory - ignoring it."))
			    -1)
			   ((not (file-write-access? dirpath))
			    (if (common:low-noise-print 300 "disks not writeable " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not writeable - ignoring it."))
			    -1)
			   ((not (eq? (string-ref dirpath 0) #\/))
			    (if (common:low-noise-print 300 "disks not a proper path " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a fully qualified path - ignoring it."))
			    -1)
			   (else
			    (get-df dirpath))))
	      (free-inodes (cond
			   ((not (directory? dirpath))
			    (if (common:low-noise-print 300 "disks not a dir " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a directory - ignoring it."))
			    -1)
			   ((not (file-write-access? dirpath))
			    (if (common:low-noise-print 300 "disks not writeable " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not writeable - ignoring it."))
			    -1)
			   ((not (eq? (string-ref dirpath 0) #\/))
			    (if (common:low-noise-print 300 "disks not a proper path " disk-num)
				(debug:print 0 *default-log-port* "WARNING: disk " disk-num " at path \"" dirpath "\" is not a fully qualified path - ignoring it."))
			    -1)
			   (else
			    (get-free-inodes dirpath))))
             ;;(free-inodes (get-free-inodes dirpath))
             )
             (debug:print 2 *default-log-port* "INFO: disk " disk-num " path " dirpath " free space " freespc " free inodes " free-inodes)
	 (if (and (> freespc bestsize)(> free-inodes min-inodes ))
	     (begin
	       (set! best     (cons disk-num dirpath))
	       (set! bestsize freespc)))
        ;;(print "Processing: " disk-num " bestsize: " bestsize " best: " best " freespc: " freespc " min-inodes: " min-inodes " free-inodes: " free-inodes)
      ))
     (map car disks))
    (if (and best (> bestsize minsize))
	best
	#f))) ;; #f means no disk candidate found

;; convert a spec string to a list of vectors #( rx  action rx-string )
(define (common:spec-string->list-of-specs spec-string actions)
  (let ((spec-strings  (string-split-fields "\\s*;\\s*" spec-string #:infix))
	(actions-regex (regexp (conc "^(.*)\\s+(" (string-intersperse (map conc actions) "|") ")"))))
    (filter
     (lambda (x) x)
     (map (lambda (s)
	    (let ((m (string-match actions-regex s)))
	      (if m
		  (vector (regexp (cadr m))(string->symbol (caddr m))(cadr m))
		  (begin
		    (debug:print 0 *default-log-port* "WARNING: Unrecognised rule \"" s "\" in clean-up specification.")
		    #f))))
	  spec-strings))))
  
;; given a list of specs rx . rule and a file return the first matching rule
;; 
(define (common:file-find-rule fname rules) ;; rule is vector #( rx action rx-string)
  (let loop ((rule   (car rules))
	     (tail   (cdr rules)))
    (let ((rx (vector-ref rule 0))
	  (rn (vector-ref rule 1))) ;; rule name
      (if (string-match rx fname)
	  rule ;; return the whole rule so regex can be printed etc.
	  (if (null? tail)
	      #f
	      (loop (car tail)(cdr tail)))))))

;; given a spec apply some rules to a directory
;;
;;  WARNING: This function will REMOVE files - be sure your spec and path is correct!
;;
;; spec format:
;;   file-regex1 action; file-regex2 action; ...
;; e.g.
;;   .*\.log$ keep; .* remove
;;   --> keep all .log files, remove everything else
;; limitations:
;;   cannot have a rule with ; as part of the spec
;;   not very flexible, would be nice to return binned file names?
;; supported rules:
;;   keep     - keep this file
;;   remove   - remove this file
;;   compress - compress this file
;;
(define (common:dir-clean-up path spec-string #!key (compress "gzip")(actions '(keep remove compress))(remove-empty #f))
  (let* ((specs         (common:spec-string->list-of-specs spec-string actions))
	 (keepers       (make-hash-table))
	 (directories   (make-hash-table)))
    (find-files 
     path
     action: (lambda (p res)
	       (let ((rule  (common:file-find-rule p specs)))
		 (cond
		  ((directory? p)(hash-table-set! directories p #t))
		  (else
		   (case (vector-ref rule 1)
		     ((keep)(hash-table-set! keepers p rule))
		     ((remove)
		      (print "Removing file " p)
		      (delete-file p))
		     ((compress)
		      (print "Compressing file " p)
		      (system (conc compress " " p)))
		     (else
		      (print "No match for file " p))))))))
    (if remove-empty
	(for-each
	 (lambda (d)
	   (if (null? (glob (conc d "/.*")(conc d "/*")))
	       (begin
		 (print "Removing empty directory " d)
		 (delete-directory d))))
	 (sort (hash-table-keys directories) (lambda (a b)(> (string-length a)(string-length b))))))
    ))

;;======================================================================
;; E N V I R O N M E N T   V A R S
;;======================================================================
(define (bb-check-path #!key (msg "check-path: "))
  (let ((path (or (get-environment-variable "PATH") "none")))
    (debug:print-info 0 *default-log-port* (conc msg" : $PATH="path))
    (if (string-match "^.*/isoenv-core/.*" path)
        (debug:print-error 0 *default-log-port* (conc msg" : !!ISOENV PRESENT!!")) ;; remove for prod
        (debug:print-info 1 *default-log-port* (conc msg" : **no isoenv present**")))))

	      
(define (save-environment-as-files fname #!key (ignorevars (list "USER" "HOME" "DISPLAY" "LS_COLORS" "XKEYSYMDB" "EDITOR" "MAKEFLAGS" "MAKEF" "MAKEOVERRIDES")))
  ;;(bb-check-path msg: "save-environment-as-files entry")
  (let ((envvars (get-environment-variables))
        (whitesp (regexp "[^a-zA-Z0-9_\\-:,\\.\\/%$]"))
	(mungeval (lambda (val)
		    (cond
		     ((eq? val #t) "") ;; convert #t to empty string
		     ((eq? val #f) #f) ;; convert #f to itself (still thinking about this one
		     (else val)))))
    (with-output-to-file (conc fname ".csh")
       (lambda ()
          (for-each (lambda (keyval)
		      (let* ((key   (car keyval))
			     (val   (cdr keyval))
			     (delim (if (string-search whitesp val) 
					"\""
					"")))
			(print (if (or (member key ignorevars)
				       (string-search whitesp key))
				   "# setenv "
				   "setenv ")
			       key " " delim (mungeval val) delim)))
		    envvars)))
     (with-output-to-file (conc fname ".sh")
       (lambda ()
          (for-each (lambda (keyval)
		      (let* ((key (car keyval))
			     (val (cdr keyval))
			     (delim (if (string-search whitesp val) 
					"\""
					"")))
			(print (if (or (member key ignorevars)
				       (string-search whitesp key)
				       (string-search ":" key)) ;; internal only values to be skipped.
				   "# export "
				   "export ")
			       key "=" delim (mungeval val) delim)))
                    envvars)))))


(define (common:get-param-mapping #!key (flavor #f))
  "returns alist mapping string keys in testconfig/subrun to megatest command line switches; if flavor is switch-symbol, maps tcmt symbolic switches to megatest switches"
  (let ((default '(("tag-expr"  . "-tagexpr")
                   ("mode-patt" . "-modepatt")
                   ("run-name"  . "-runname")
                   ("contour"   . "-contour")
                   ("target"    . "-target")
                   ("test-patt" . "-testpatt")
                   ("msg"       . "-m")
                   ("log"       . "-log")
                   ("start-dir" . "-start-dir")
                   ("new"       . "-set-state-status"))))
    (if (eq? flavor 'switch-symbol)
        (map (lambda (x)
               (cons (string->symbol (conc "-" (car x))) (cdr x)))
             default)
        default)))

;; set some env vars from an alist, return an alist with original values
;; (("VAR" "value") ...)
;; a value of #f means "unset this var"
;;
(define (alist->env-vars lst)
  (if (list? lst)
      (let ((res '()))
	(for-each (lambda (p)
		    (let* ((var (car  p))
			   (val (cadr p))
			   (prv (get-environment-variable var)))
		      (set! res (cons (list var prv) res))
		      (if val 
			  (safe-setenv var (->string val))
			  (unsetenv var))))
		  lst)
	res)
      '()))


;; clear vars matching pattern, run proc, set vars back
;; if proc is a string run that string as a command with
;; system.
;;
(define *common:orig-env*
  (let ((envvars (get-environment-variables)))
    (if (get-environment-variable "MT_ORIG_ENV")
        (with-input-from-string
            (z3:decode-buffer (base64:base64-decode (get-environment-variable "MT_ORIG_ENV")))
          read)
        (filter-map (lambda (x)
                      (if (string-match "^MT_.*" (car x))
                          #f
                          x))
                    envvars))))

(define (common:with-orig-env proc)
  (let  ((current-env (get-environment-variables)))
    (for-each (lambda (x) (unsetenv (car x)))             current-env)
    (for-each (lambda (x) (setenv (car x) (cdr x))) *common:orig-env*)
    (let ((rv (cond
               ((string? proc)(system proc))
               (proc          (proc)))))
      (for-each (lambda (x) (unsetenv (car x))) *common:orig-env*)
      (for-each (lambda (x) (setenv (car x) (cdr x))) current-env)
      rv)))

(define (common:without-vars proc . var-patts)
  (let ((vars (make-hash-table)))
    (for-each
     (lambda (vardat) ;; each env var
       (for-each
	(lambda (var-patt)
	  (if (string-match var-patt (car vardat))
	      (let ((var (car vardat))
		    (val (cdr vardat)))
		(hash-table-set! vars var val)
		(unsetenv var))))
	var-patts))
     (get-environment-variables))
    (cond
     ((string? proc)(system proc))
     (proc          (proc)))
    (hash-table-for-each
     vars
     (lambda (var val)
       (setenv var val)))
    vars))


(define (common:run-a-command cmd #!key (with-vars #f) (with-orig-env #f))
  (let* ((pre-cmd  (dtests:get-pre-command))
         (post-cmd (dtests:get-post-command))
         (fullcmd  (if (or pre-cmd post-cmd)
                       (conc pre-cmd cmd post-cmd)
                       (conc "viewscreen " cmd))))
    (debug:print-info 02 *default-log-port* "Running command: " fullcmd)
    (cond
     (with-vars     (common:without-vars  fullcmd))
     (with-orig-env (common:with-orig-env fullcmd))
     (else          (common:without-vars  fullcmd "MT_.*")))))
		  
;;======================================================================
;; C O L O R S
;;======================================================================
      
(define (common:name->iup-color name)
  (case (string->symbol (string-downcase name))
    ((red)    "223 33 49")
    ((grey)   "192 192 192")
    ((orange) "255 172 13")
    ((purple) "This is unfinished ...")))

;; (define (common:get-color-for-state-status state status)
;;   (case (string->symbol state)
;;     ((COMPLETED)
;;      (case (string->symbol status)
;;        ((PASS)        "70  249 73")
;;        ((WARN WAIVED) "255 172 13")
;;        ((SKIP)        "230 230 0")
;;        (else "223 33 49")))
;;     ((LAUNCHED)         "101 123 142")
;;     ((CHECK)            "255 100 50")
;;     ((REMOTEHOSTSTART)  "50  130 195")
;;     ((RUNNING)          "9   131 232")
;;     ((KILLREQ)          "39  82  206")
;;     ((KILLED)           "234 101 17")
;;     ((NOT_STARTED)      "240 240 240")
;;     (else               "192 192 192")))

(define (common:iup-color->rgb-hex instr)
  (string-intersperse 
   (map (lambda (x)
          (number->string x 16))
        (map string->number
             (string-split instr)))
   "/"))

;;======================================================================
;; L O C K I N G   M E C H A N I S M S 
;;======================================================================

;; faux-lock is deprecated. Please use simple-lock below
;;
(define (common:faux-lock keyname #!key (wait-time 8)(allow-lock-steal #t))
  (if (rmt:no-sync-get/default keyname #f) ;; do not be tempted to compare to pid. locking is a one-shot action, if already locked for this pid it doesn't actually count
      (if (> wait-time 0)
	  (begin
	    (thread-sleep! 1)
	    (if (eq? wait-time 1) ;; only one second left, steal the lock
		(begin
		  (debug:print-info 0 *default-log-port* "stealing lock for " keyname)
		  (common:faux-unlock keyname force: #t)))
	    (common:faux-lock keyname wait-time: (- wait-time 1)))
	  #f)
      (begin
        (rmt:no-sync-set keyname (conc (current-process-id)))
        (equal? (conc (current-process-id)) (conc (rmt:no-sync-get/default keyname #f))))))

(define (common:faux-unlock keyname #!key (force #f))
  (if (or force (equal? (conc (current-process-id)) (conc (rmt:no-sync-get/default keyname #f))))
      (begin
        (if (rmt:no-sync-get/default keyname #f) (rmt:no-sync-del! keyname))
        #t)
      #f))

;; simple lock. improve and converge on this one.
;;
(define (common:simple-lock keyname)
  (rmt:no-sync-get-lock keyname))

(define (common:simple-unlock keyname #!key (force #f))
  (rmt:no-sync-del! keyname))


;;======================================================================
;;
;;======================================================================

(define (common:in-running-test?)
  (and (args:get-arg "-execute") (get-environment-variable "MT_CMDINFO")))

(define (common:get-color-from-status status)
  (cond
   ((equal? status "PASS")    "green")
   ((equal? status "FAIL")    "red")
   ((equal? status "WARN")    "orange")
   ((equal? status "KILLED")  "orange")
   ((equal? status "KILLREQ") "purple")
   ((equal? status "RUNNING") "blue")
   ((equal? status "ABORT")   "brown")
   (else "black")))

(define (tests:cache-regexp str-in flag)
  (let* ((key (conc str-in flag)))
    (or (hash-table-ref/default *glob-like-match-cache* key #f)
	(let* ((newrx (regexp str-in flag)))
	  (hash-table-set! *glob-like-match-cache* key newrx)
	  newrx))))

;; tests:glob-like-match 
(define (tests:glob-like-match patt str) 
  (let* ((like     (substring-index "%" patt))
	 (notpatt  (equal? (substring-index "~" patt) 0))
	 (newpatt  (if notpatt (substring patt 1) patt))
	 (finpatt  (if like
		       (string-substitute (regexp "%") ".*" newpatt #f)
		       (string-substitute (regexp "\\*") ".*" newpatt #f)))
	 (rx       (tests:cache-regexp finpatt (if like #t #f)))
	 (res      (string-match rx str)))
    (if notpatt (not res) res)))

;; if itempath is #f then look only at the testname part
;;
(define (tests:match patterns testname itempath #!key (required '()))
  (if (string? patterns)
      (let ((patts (append (string-split patterns ",") required)))
	(if (null? patts) ;;; no pattern(s) means no match
	    #f
	    (let loop ((patt (car patts))
		       (tal  (cdr patts)))
	      ;; (print "loop: patt: " patt ", tal " tal)
	      (if (string=? patt "")
		  #f ;; nothing ever matches empty string - policy
		  (let* ((patt-parts (string-match (regexp "^([^\\/]*)(\\/(.*)|)$") patt))
			 (test-patt  (cadr patt-parts))
			 (item-patt  (cadddr patt-parts)))
		    ;; special case: test vs. test/
		    ;;   test  => "test" "%"
		    ;;   test/ => "test" ""
		    (if (and (not (substring-index "/" patt)) ;; no slash in the original
			     (or (not item-patt)
				 (equal? item-patt "")))      ;; should always be true that item-patt is ""
			(set! item-patt "%"))
		    ;; (print "tests:match => patt-parts: " patt-parts ", test-patt: " test-patt ", item-patt: " item-patt)
		    (if (and (tests:glob-like-match test-patt testname)
			     (or (not itempath)
				 (tests:glob-like-match (if item-patt item-patt "") itempath)))
			#t
			(if (null? tal)
			    #f
			    (loop (car tal)(cdr tal)))))))))))

;; make a query (fieldname like 'patt1' OR fieldname 
(define (db:patt->like fieldname pattstr #!key (comparator " OR "))
  (let ((patts (if (string? pattstr)
		   (string-split pattstr ",")
		   '("%"))))
    (string-intersperse (map (lambda (patt)
			       (let ((wildtype (if (substring-index "%" patt) "LIKE" "GLOB")))
				 (conc fieldname " " wildtype " '" patt "'")))
			     (if (null? patts)
				 '("")
				 patts))
			comparator)))


;; if itempath is #f then look only at the testname part
;;
(define (tests:match->sqlqry patterns)
  (if (string? patterns)
      (let ((patts (string-split patterns ",")))
	(if (null? patts) ;;; no pattern(s) means no match, we will do no query
	    #f
	    (let loop ((patt (car patts))
		       (tal  (cdr patts))
		       (res  '()))
	      ;; (print "loop: patt: " patt ", tal " tal)
	      (let* ((patt-parts (string-match (regexp "^([^\\/]*)(\\/(.*)|)$") patt))
		     (test-patt  (cadr patt-parts))
		     (item-patt  (cadddr patt-parts))
		     (test-qry   (db:patt->like "testname" test-patt))
		     (item-qry   (db:patt->like "item_path" item-patt))
		     (qry        (conc "(" test-qry " AND " item-qry ")")))
		;; (print "tests:match => patt-parts: " patt-parts ", test-patt: " test-patt ", item-patt: " item-patt)
		(if (null? tal)
		    (string-intersperse (append (reverse res)(list qry)) " OR ")
		    (loop (car tal)(cdr tal)(cons qry res)))))))
      #f))


;; ;;======================================================================
;; ;; N A N O M S G   C L I E N T
;; ;;======================================================================
;; 
;; 
;; 
;; (define (common:send-dboard-main-changed)
;;   (let* ((dashboard-ips (mddb:get-dashboards)))
;;     (for-each
;;      (lambda (ipadr)
;;        (let* ((soc (common:open-nm-req (conc "tcp://" ipadr)))
;; 	      (msg (conc "main " *toppath*))
;; 	      (res (common:nm-send-receive-timeout soc msg)))
;; 	 (if (not res) ;; couldn't reach that dashboard - remove it from db
;; 	     (print "ERROR: couldn't reach dashboard " ipadr))
;; 	 res))
;;      dashboard-ips)))
;;     
;;     
;; ;;======================================================================
;; ;; D A S H B O A R D   D B 
;; ;;======================================================================
;; 
;; (define (mddb:open-db)
;;   (let* ((db (open-database (conc (get-environment-variable "HOME") "/.dashboard.db"))))
;;     (set-busy-handler! db (busy-timeout 10000))
;;     (for-each
;;      (lambda (qry)
;;        (exec (sql db qry)))
;;      (list 
;;       "CREATE TABLE IF NOT EXISTS vars       (id INTEGER PRIMARY KEY,key TEXT, val TEXT, CONSTRAINT varsconstraint UNIQUE (key));"
;;       "CREATE TABLE IF NOT EXISTS dashboards (
;;           id         INTEGER PRIMARY KEY,
;;           pid        INTEGER,
;;           username   TEXT,
;;           hostname   TEXT,
;;           ipaddr     TEXT,
;;           portnum    INTEGER,
;;           start_time TIMESTAMP DEFAULT (strftime('%s','now')),
;;              CONSTRAINT hostport UNIQUE (hostname,portnum)
;;         );"
;;       ))
;;     db))
;; 
;; ;; register a dashboard 
;; ;;
;; (define (mddb:register-dashboard port)
;;   (let* ((pid      (current-process-id))
;; 	 (hostname (get-host-name))
;; 	 (ipaddr   (server:get-best-guess-address hostname))
;; 	 (username (current-user-name)) ;; (car userinfo)))
;; 	 (db      (mddb:open-db)))
;;     (print "Register monitor, pid: " pid ", hostname: " hostname ", port: " port ", username: " username)
;;     (exec (sql db "INSERT OR REPLACE INTO dashboards (pid,username,hostname,ipaddr,portnum) VALUES (?,?,?,?,?);")
;; 	   pid username hostname ipaddr port)
;;     (close-database db)))
;; 
;; ;; unregister a monitor
;; ;;
;; (define (mddb:unregister-dashboard host port)
;;   (let* ((db      (mddb:open-db)))
;;     (print "Register unregister monitor, host:port=" host ":" port)
;;     (exec (sql db "DELETE FROM dashboards WHERE hostname=? AND portnum=?;") host port)
;;     (close-database db)))
;; 
;; ;; get registered dashboards
;; ;;
;; (define (mddb:get-dashboards)
;;   (let ((db (mddb:open-db)))
;;     (query fetch-column
;; 	   (sql db "SELECT ipaddr || ':' || portnum FROM dashboards;"))))
    
;;======================================================================
;;  T E S T   L A U N C H I N G   P E R   I T E M   W I T H   H O S T   T Y P E S
;;======================================================================
;; 
;; [hosts]
;; arm cubie01 cubie02
;; x86_64 zeus xena myth01
;; allhosts #{g hosts arm} #{g hosts x86_64}
;; 
;; [host-types]
;; general #MTLOWESTLOAD #{g hosts allhosts}
;; arm     #MTLOWESTLOAD #{g hosts arm}
;; nbgeneral nbjob run JOBCOMMAND -log $MT_LINKTREE/$MT_TARGET/$MT_RUNNAME.$MT_TESTNAME-$MT_ITEM_PATH.lgo
;;
;; [host-rules]
;; # maxnload   => max normalized load
;; # maxnjobs   => max jobs per cpu
;; # maxjobrate => max jobs per second
;; general maxnload=1.1; maxnjobs=1.2; maxjobrate=0.1 
;; 
;; [launchers]
;; envsetup general
;; xor/%/n 4C16G
;; % nbgeneral
;; 
;; [jobtools]
;; # if defined and not "no" flexi-launcher will bypass "launcher" unless no match.
;; flexi-launcher yes  
;; launcher nbfake
;;
(define (common:get-launcher configdat testname itempath)
  (let ((fallback-launcher (configf:lookup configdat "jobtools" "launcher")))
    (if (and (configf:lookup configdat "jobtools" "flexi-launcher") ;; overrides launcher
	     (not (equal? (configf:lookup configdat "jobtools" "flexi-launcher") "no")))
	(let* ((launchers         (hash-table-ref/default configdat "launchers" '())))
	  (if (null? launchers)
	      fallback-launcher
	      (let loop ((hed (car launchers))
			 (tal (cdr launchers)))
		(let ((patt      (car hed))
		      (host-type (cadr hed)))
		  (if (tests:match patt testname itempath)
		      (begin
			(debug:print-info 2 *default-log-port* "Have flexi-launcher match for " testname "/" itempath " = " host-type)
			(let ((launcher (configf:lookup configdat "host-types" host-type)))
			  (if launcher
			      (let* ((launcher-parts (string-split launcher))
				     (launcher-exe   (car launcher-parts)))
				(if (equal? launcher-exe "#MTLOWESTLOAD") ;; this is our special case, we will find the lowest load and craft a nbfake commandline
				    (let host-loop ((targ-host (common:get-least-loaded-host (cdr launcher-parts) host-type configdat))
						    (count     100))
				      (if targ-host
					  (conc "remrun " targ-host)
					  (if (> count 0)
					      (begin
						(debug:print 0 *default-log-port* "INFO: Waiting for a host for host-type " host-type)
						(thread-sleep! (- 101 count))
						(host-loop (common:get-least-loaded-host (cdr launcher-parts) host-type configdat)
							   (- count 1)))
					      (begin
						(debug:print 0 *default-log-port* "FATAL: Failed to find a host from #MTLOWESTLOAD for host-type " host-type)
						(exit)))))
				    launcher))
			      (begin
				(debug:print-info 0 *default-log-port* "WARNING: no launcher found for host-type " host-type)
				(if (null? tal)
				    fallback-launcher
				    (loop (car tal)(cdr tal)))))))
		      ;; no match, try again
		      (if (null? tal)
			  fallback-launcher
			  (loop (car tal)(cdr tal))))))))
	fallback-launcher)))

;;======================================================================
;; NMSG AND NEW API
;;======================================================================

;; nm based server experiment, keep around for now.
;;
#;(define (nm:start-server dbconn #!key (given-host-name #f))
  (let* ((srvdat    (start-raw-server given-host-name: given-host-name))
	 (host-name (srvdat-host srvdat))
	 (soc       (srvdat-soc srvdat)))
    
    ;; start the queue processor (save for second round of development)
    ;;
    (thread-start! (make-thread! (lambda ()(queue-processor dbconn) "Queue processor")))
    ;; msg is an alist
    ;;  'r host:port  <== where to return the data
    ;;  'p params     <== data to apply the command to
    ;;  'e j|s|l      <== encoding of the params. default is s (sexp), if not specified is assumed to be default
    ;;  'c command    <== look up the function to call using this key
    ;;
    (let loop ((msg-in (nn-recv soc)))
      (if (not (equal? msg-in "quit"))
	  (let* ((dat        (decode msg-in))
		 (host-port  (alist-ref 'r dat)) ;; this is for the reverse req rep where the server is a client of the original client
		 (params     (alist-ref 'p dat))
		 (command    (let ((c (alist-ref 'c dat)))(if c (string->symbol c) #f)))
		 (all-good   (and host-port params command (hash-table-exists? *commands* command))))
	    (if all-good
		(let ((cmddat (make-qitem
			       command:   command
			       host-port: host-port
			       params:    params)))
		  (queue-push cmddat) 		;; put request into the queue
		  (nn-send soc "queued"))         ;; reply with "queued"
		(print "ERROR: ["(common:human-time)"] BAD request " dat))
	    (loop (nn-recv soc)))))
    (nn-close soc)))

;;======================================================================
;; D A S H B O A R D   U S E R   V I E W S
;;======================================================================

;; first read ~/views.config if it exists, then read $MTRAH/views.config if it exists
;;
(define (common:load-views-config)
  (let* ((view-cfgdat    (make-hash-table))
	 (home-cfgfile   (conc (get-environment-variable "HOME") "/.mtviews.config"))
	 (mthome-cfgfile (conc *toppath* "/.mtviews.config")))
    (if (common:file-exists? mthome-cfgfile)
	(read-config mthome-cfgfile view-cfgdat #t))
    ;; we load the home dir file AFTER the MTRAH file so the user can clobber settings when running the dashboard in read-only areas
    (if (common:file-exists? home-cfgfile)
	(read-config home-cfgfile view-cfgdat #t))
    view-cfgdat))

;;======================================================================
;; H I E R A R C H I C A L   H A S H   T A B L E S
;;======================================================================

;; Every element including top element is a vector:
;;   <vector subhash value>

(define (hh:make-hh #!key (ht #f)(value #f))
  (vector (or ht    (make-hash-table)) value))

;; used internally
(define-inline (hh:set-ht! hh ht)       (vector-set! hh 0 ht))
(define-inline (hh:get-ht hh)           (vector-ref  hh 0))
(define-inline (hh:set-value! hh value) (vector-set! hh 1 value))
(define-inline (hh:get-value  hh value) (vector-ref  hh 1))

;; given a hierarchial hash and some keys look up the value ...
;;
(define (hh:get hh . keys)
  (if (null? keys)
      (vector-ref hh 1) ;; we have reached the end of the line, return the value sought
      (let ((sub-ht (hh:get-ht hh)))
	(if sub-ht ;; yes, there is more hierarchy
	    (let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
	      (if sub-hh
		  (apply hh:get sub-hh (cdr keys))
		  #f))
	    #f))))

;; given a hierarchial hash, a value and some keys, add needed hierarcy and insert the value
;;
(define (hh:set! hh value . keys)
  (if (null? keys)
      (hh:set-value! hh value) ;; we have reached the end of the line, store the value
      (let ((sub-ht (hh:get-ht hh)))
	(if sub-ht ;; yes, there is more hierarchy
	    (let ((sub-hh (hash-table-ref/default sub-ht (car keys) #f)))
	      (if (not sub-hh) ;; we'll need to add the next level of hierarchy
		  (let ((new-sub-hh (hh:make-hh)))
		    (hash-table-set! sub-ht (car keys) new-sub-hh)
		    (apply hh:set! new-sub-hh value (cdr keys)))
		  (apply hh:set! sub-hh value (cdr keys))))    ;; call the sub-hierhash with remaining keys
	    (begin
	      (hh:set-ht! hh (make-hash-table))
	      (apply hh:set! hh value keys))))))
  
;; Manage pkts, used in servers, tests and likely other contexts so put
;; in common
;;======================================================================

(define common:pkts-spec
  '((default . ((parent    . P)
                (action    . a)
                (filename  . f)))
    (configf . ((parent    . P)
                (action    . a)
                (filename  . f)))
    (server  . ((action    . a)
		(pid       . d)
		(ipaddr    . i)
		(port      . p)
		(parent    . P)))
    			  
    (test    . ((cpuuse    . c)
		(diskuse   . d)
		(item-path . i)
		(runname   . r)
		(state     . s)
		(target    . t)
		(status    . u)
		(parent    . P)))))

(define (common:get-pkts-dirs mtconf use-lt)
  (let* ((pktsdirs-str (or (configf:lookup mtconf "setup"  "pktsdirs")
			   (and use-lt
				(conc (or *toppath*
					  (current-directory))
				      "/lt/.pkts"))))
	 (pktsdirs  (if pktsdirs-str
			(string-split pktsdirs-str " ")
			#f)))
    pktsdirs))

;; use-lt is use linktree "lt" link to find pkts dir
(define (common:save-pkt pktalist-in mtconf use-lt #!key (add-only #f)) ;; add-only saves the pkt only if there is a parent already
  (if (or add-only
	  (hash-table-exists? *pkts-info* 'last-parent))
      (let* ((parent   (hash-table-ref/default *pkts-info* 'last-parent #f))
	     (pktalist (if parent
			   (cons `(parent . ,parent)
				 pktalist-in)
			   pktalist-in)))
	(let-values (((uuid pkt)
		      (alist->pkt pktalist common:pkts-spec)))
	  (hash-table-set! *pkts-info* 'last-parent uuid)
	  (let ((pktsdir (or (hash-table-ref/default *pkts-info* 'pkts-dir #f)
			     (let* ((pktsdirs (common:get-pkts-dirs mtconf use-lt))
				    (pktsdir   (car pktsdirs))) ;; assume it is there
			       (hash-table-set! *pkts-info* 'pkts-dir pktsdir)
			       pktsdir))))
            (handle-exceptions
             exn
             (debug:print-info 0 "failed to write out packet to " pktsdir ", exn=" exn) ;; don't care if this failed for now but MUST FIX - BUG!!
             (if (not (file-exists? pktsdir))
                 (create-directory pktsdir #t))
             (with-output-to-file
                 (conc pktsdir "/" uuid ".pkt")
               (lambda ()
                 (print pkt)))))))))
	
(define (common:with-queue-db mtconf proc #!key (use-lt #f)(toppath-in #f))
  (let* ((pktsdirs (common:get-pkts-dirs mtconf use-lt))
	 (pktsdir  (if pktsdirs (car pktsdirs) #f))
	 (toppath  (or (configf:lookup mtconf "scratchdat" "toppath")
		       toppath-in))
	 (pdbpath  (or (configf:lookup mtconf "setup"  "pdbpath") pktsdir)))
    (cond
     ((not (and  pktsdir toppath pdbpath))
      (debug:print 0 *default-log-port* "ERROR: settings are missing in your megatest.config for area management.")
      (debug:print  0 *default-log-port* "  you need to have pktsdirs in the [setup] section."))
     ((not (common:file-exists? pktsdir))
      (debug:print 0 *default-log-port* "ERROR: pkts directory not found " pktsdir))
     ((not (equal? (file-owner pktsdir)(current-effective-user-id)))
      (debug:print 0 *default-log-port* "ERROR: directory " pktsdir " is not owned by " (current-effective-user-name)))
     (else
	(let* ((pdb  (open-queue-db pdbpath "pkts.db"
				    schema: '("CREATE TABLE groups (id INTEGER PRIMARY KEY,groupname TEXT, CONSTRAINT group_constraint UNIQUE (groupname));"))))
	  (proc pktsdirs pktsdir pdb)
	  (dbi:close pdb))))))

(define (common:load-pkts-to-db mtconf #!key (use-lt #f))
  (common:with-queue-db
   mtconf
   (lambda (pktsdirs pktsdir pdb)
     (for-each
      (lambda (pktsdir) ;; look at all
	(cond
	 ((not (common:file-exists? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory " pktsdir " does not exist."))
	 ((not (directory? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory path " pktsdir " is not a directory."))
	 ((not (file-read-access? pktsdir))
	  (debug:print 0 *default-log-port* "ERROR: packets directory path " pktsdir " is not readable."))
	 (else
	  (debug:print-info 0 *default-log-port* "Loading packets found in " pktsdir)
	  (let ((pkts (glob (conc pktsdir "/*.pkt"))))
	    (for-each
	     (lambda (pkt)
	       (let* ((uuid    (cadr (string-match ".*/([0-9a-f]+).pkt" pkt)))
		      (exists  (lookup-by-uuid pdb uuid #f)))
		 (if (not exists)
		     (let* ((pktdat (string-intersperse
				     (with-input-from-file pkt read-lines)
				     "\n"))
			    (apkt   (pkt->alist pktdat))
			    (ptype  (alist-ref 'T apkt)))
		       (add-to-queue pdb pktdat uuid (or ptype 'cmd) #f 0)
		       (debug:print 4 *default-log-port* "Added " uuid " of type " ptype " to queue"))
		     (debug:print 4 *default-log-port* "pkt: " uuid " exists, skipping...")
		     )))
	     pkts)))))
      pktsdirs))
   use-lt: use-lt))

(define (common:get-pkt-alists pkts)
  (map (lambda (x)
	 (alist-ref 'apkt x)) ;; 'pkta pulls out the alist from the read pkt
       pkts))

;; given list of pkts (alist mode) return list of D cards as Unix epoch, sorted descending
;; also delete duplicates by target i.e. (car pkt)
;;
(define (common:get-pkt-times pkts)
  (delete-duplicates
   (sort 
    (map (lambda (x)
	   `(,(alist-ref 't x) . ,(string->number (alist-ref 'D x))))
	 pkts)
    (lambda (a b)(> (cdr a)(cdr b))))      ;; sort descending
   (lambda (a b)(equal? (car a)(car b))))) ;; remove duplicates by target



;; accept an alist or hash table containing envvar/env value pairs (value of #f causes unset) 
;;   execute thunk in context of environment modified as per this list
;;   restore env to prior state then return value of eval'd thunk.
;;   ** this is not thread safe **
(define (common:with-env-vars delta-env-alist-or-hash-table thunk)
  (let* ((delta-env-alist (if (hash-table? delta-env-alist-or-hash-table)
                              (hash-table->alist delta-env-alist-or-hash-table)
                              delta-env-alist-or-hash-table))
         (restore-thunks
          (filter
           identity
           (map (lambda (env-pair)
                  (let* ((env-var     (car env-pair))
                         (new-val     (let ((tmp (cdr env-pair)))
                                        (if (list? tmp) (car tmp) tmp)))
                         (current-val (get-environment-variable env-var))
                         (restore-thunk
                          (cond
                           ((not current-val) (lambda () (unsetenv env-var)))
                           ((not (string? new-val)) #f)
                           ((eq? current-val new-val) #f)
                           (else 
                            (lambda () (setenv env-var current-val))))))
                    ;;(when (not (string? new-val))
                    ;;    (debug:print 0 *default-log-port* " PROBLEM: not a string: "new-val"\n from env-alist:\n"delta-env-alist)
                    ;;    (pp delta-env-alist)
                    ;;    (exit 1))
                        
                    
                    (cond
                     ((not new-val)  ;; modify env here
                      (unsetenv env-var))
                     ((string? new-val)
                      (setenv env-var new-val)))
                    restore-thunk))
                delta-env-alist))))
    (let ((rv (thunk)))
      (for-each (lambda (x) (x)) restore-thunks) ;; restore env to original state
      rv)))

(define *common:thread-punchlist* (make-hash-table))
(define (common:send-thunk-to-background-thread thunk #!key (name #f))
  ;;(BB> "launched thread " name)

  ;; we need a unique name for the thread.
  (let* ((realname (if name
                       (if (not (hash-table-ref/default *common:thread-punchlist* name #f))
                           name
                           (conc name"-" (symbol->string (gensym))))
                       (conc "anonymous-"(symbol->string (gensym)))))
         (realthunk (lambda ()
                      (let ((res (thunk)))
                        (hash-table-delete! *common:thread-punchlist* realname)
                        res)))
         (thread   (make-thread realthunk realname)))
    (hash-table-set! *common:thread-punchlist* realname thread)
    (thread-start! thread)
    ))

(define (common:join-backgrounded-threads)
  ;; may need to trap and ignore exceptions -- dunno how atomic threads are...
  (for-each
   (lambda (thread-name)
     (let* ((thread (hash-table-ref/default *common:thread-punchlist* thread-name #f)))
       (if thread
           (handle-exceptions
               exn
	     (begin
	       (debug:print 0 *default-log-port* "joining threads failed. exn=" exn)
               #t) ;; just ignore it, it might have died in the meantime so joining it will throw an exception
             (thread-join! thread))
           )))
   (hash-table-keys *common:thread-punchlist*)))

;; (define *common:telemetry-log-state* 'startup)
;; (define *common:telemetry-log-socket* #f)
;; 
;; (define (common:telemetry-log-open)
;;   (if (eq? *common:telemetry-log-state* 'startup)
;;       (let* ((serverhost (configf:lookup *configdat* "telemetry" "host"))
;;              (serverport (configf:lookup-number *configdat* "telemetry" "port"))
;;              (user (or (get-environment-variable "USER") "unknown"))
;;              (host (or (get-environment-variable "HOST") "unknown")))
;;         (set! *common:telemetry-log-state*
;;               (handle-exceptions
;;                exn
;;                (begin
;;                  (debug:print-info 0 *default-log-port* "common-telemetry-log open udp port failure")
;;                  'broken)
;;                (if (and serverhost serverport user host)
;;                    (let* ((s (udp-open-socket)))
;;                      ;;(udp-bind! s #f 0)
;;                      (udp-connect! s serverhost serverport)
;;                      (set! *common:telemetry-log-socket* s)
;;                      'open)
;;                    'not-needed))))))
;;   
;; (define (common:telemetry-log event #!key (payload '()))
;;   (if (eq? *common:telemetry-log-state* 'startup)
;;       (common:telemetry-log-open))
;; 
;;   (if (eq? 'open *common:telemetry-log-state*)
;;       (handle-exceptions
;;        exn
;;        (begin
;;          (debug:print-info 0 *default-log-port* "common-telemetry-log comms failure ; disabled (no server?)")
;;          ;;(define *common:telemetry-log-state* 'broken-or-no-server-preclose)
;;          ;;(common:telemetry-log-close)
;;          (define *common:telemetry-log-state* 'broken-or-no-server)
;;          (set! *common:telemetry-log-socket* #f)
;;          )
;;        (if (and *common:telemetry-log-socket* event) ;; TODO - filter on event against telemetry.want-events
;;            (let* ((user (or (get-environment-variable "USER") "unknown"))
;;                   (host (or (get-environment-variable "HOST") "unknown"))
;;                   (start (conc "[megatest "event"]"))
;;                   (toppath (or *toppath* "/dev/null"))
;;                   (payload-serialized
;;                    (base64:base64-encode
;;                     (z3:encode-buffer
;;                      (with-output-to-string (lambda () (pp payload))))))
;;                   (msg     (conc user":"host":"start":"(current-process-id)":"(car (argv))":"
;;                                  toppath":"payload-serialized)))
;;              (udp-send *common:telemetry-log-socket* msg))))))
;;   
;; (define (common:telemetry-log-close)
;;   (when (or (member *common:telemetry-log-state* '(broken-or-no-server-preclose open)) *common:telemetry-log-socket*)
;;     (handle-exceptions
;;      exn
;;      (begin
;;        (define *common:telemetry-log-state* 'closed-fail)
;;        (debug:print-info 0 *default-log-port* "common-telemetry-log closure failure")
;;        )
;;      (begin
;;        (define *common:telemetry-log-state* 'closed)
;;        (udp-close-socket *common:telemetry-log-socket*)
;;        (set! *common:telemetry-log-socket* #f)))))


)

(use sqlite3 srfi-1 posix regex regex-case srfi-69 csv-xml s11n md5 message-digest base64 format dot-locking z3 typed-records matchable)
(import (prefix sqlite3 sqlite3:))
(import (prefix base64 base64:))

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

(declare (uses commonmod))
(import commonmod)

(declare (uses dbmod))
(import dbmod)

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

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

;;======================================================================
;; K E E P   F I L E D B   I N   dbstruct
;;======================================================================

;; (define (db:get-filedb dbstruct run-id)
;;   (let ((db (vector-ref dbstruct 2)))
;;     (if db
;; 	db
;; 	(let ((fdb (filedb:open-db (conc *toplevel* "/db/files.db"))))
;; 	  (vector-set! dbstruct 2 fdb)
;; 	  fdb))))
;; 
;; ;; Can also be used to save arbitrary strings
;; ;;
;; (define (db:save-path dbstruct path)
;;   (let ((fdb (db:get-filedb dbstruct)))b
;;     (filedb:register-path fdb path)))
;; 
;; ;; Use to get a path. To get an arbitrary string see next define
;; ;;
;; (define (db:get-path dbstruct id)
;;   (let ((fdb (db:get-filedb dbstruct)))
;;     (filedb:get-path db id)))

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

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


;; db:lock-create-open




(define (db:get-last-update-time db)
;	(db:with-db
;   dbstruct #f #f 
;    (lambda (db)
			(let ((last-update-time #f))
      	(sqlite3:for-each-row 
          (lambda (lup) 
             (set! last-update-time lup))     
          db    
					"select max(lup) from ( select max(last_update) as lup  from tests union select max(last_update) as lup from runs);")
        last-update-time))
;))

;; 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 #!key (areapath #f))
  ;;
  (cond
   (*dbstruct-db* *dbstruct-db*);; TODO: when multiple areas are supported, this optimization will be a hazard
   (else ;;(common:on-homehost?)
    (debug:print-info 13 *default-log-port* "db:setup entered (first time, not cached.)")
    (let* ((dbstruct (make-dbr:dbstruct)))
      (when (not *toppath*)
        (debug:print-info 13 *default-log-port* "in db:setup, *toppath* not set; calling launch:setup")
        (launch:setup areapath: areapath))
      (common:get-db-tmp-area)
      (debug:print-info 13 *default-log-port* "Begin db:open-db")
      (db:open-db dbstruct areapath: areapath do-sync: do-sync)
      (debug:print-info 13 *default-log-port* "Done db:open-db")
      (set! *dbstruct-db* dbstruct)
      ;;(debug:print-info 13 *default-log-port* "new dbstruct = "(dbr:dbstruct->alist dbstruct))
      dbstruct))))
   ;; (else
   ;;  (debug:print 0 *default-log-port* "ERROR: attempt to open database when not on homehost. Exiting. Homehost: " (common:get-homehost))
   ;;  (exit 1))))

;; sync run to disk if touched
;;
(define (db:sync-touched dbstruct run-id #!key (force-sync #f))
  (let ((tmpdb   (db:get-db dbstruct))
	(mtdb    (dbr:dbstruct-mtdb   dbstruct))
        (refndb  (dbr:dbstruct-refndb dbstruct))
	(start-t (current-seconds)))
    (debug:print-info 4 *default-log-port* "Syncing for run-id: " run-id)
    (mutex-lock! *db-multi-sync-mutex*)
    (let ((update_info (cons (if force-sync 0 *db-last-sync*) "last_update")))
      (mutex-unlock! *db-multi-sync-mutex*)
      (db:sync-tables (db:sync-all-tables-list dbstruct) update_info tmpdb refndb mtdb))
    (mutex-lock! *db-multi-sync-mutex*)
    (set! *db-last-sync* start-t)
    (set! *db-last-access* start-t)
    (mutex-unlock! *db-multi-sync-mutex*)
    (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb)))

(define (db:safely-close-sqlite3-db db stmt-cache #!key (try-num 3))
  (if (<= try-num 0)
      #f
      (handle-exceptions
	  exn
	(begin
	  (print "Attempt to safely close sqlite3 db failed. Trying again. exn=" exn)
	  (thread-sleep! 3)
	  (sqlite3:interrupt! db)
	  (db:safely-close-sqlite3-db db stmtcache try-num: (- try-num 1)))
	(if (sqlite3:database? db)
	    (let* ((stmts (and stmt-cache (hash-table-ref/default stmt-cache db #f))))
	      (if stmts (map sqlite3:finalize! (hash-table-values stmts)))
	      (sqlite3:finalize! db)
	      #t)
	    #f))))

;; close all opened run-id dbs
(define (db:close-all dbstruct)
  (if (dbr:dbstruct? dbstruct)
      (handle-exceptions
	  exn
	  (begin
	    (debug:print 0 *default-log-port* "WARNING: Finalizing failed, "  ((condition-property-accessor 'exn 'message) exn) ", note - exn=" exn)
	    (print-call-chain *default-log-port*))
	;; (db:sync-touched dbstruct 0 force-sync: #t) ;; NO. Do not do this here. Instead we rely on a server to be started when there are writes, even if the server itself is not going to be used as a server.
        (let ((tdbs       (map db:dbdat-get-db 
			       (stack->list (dbr:dbstruct-dbstack dbstruct))))
              (mdb        (db:dbdat-get-db (dbr:dbstruct-mtdb   dbstruct)))
              (rdb        (db:dbdat-get-db (dbr:dbstruct-refndb dbstruct)))
	      (stmt-cache (dbr:dbstruct-stmt-cache dbstruct)))
          (map (lambda (db)
		 (db:safely-close-sqlite3-db db stmt-cache))
	       tdbs)
          (db:safely-close-sqlite3-db mdb stmt-cache)     ;; (if (sqlite3:database? mdb) (sqlite3:finalize! mdb))
          (db:safely-close-sqlite3-db rdb stmt-cache))))) ;; (if (sqlite3:database? rdb) (sqlite3:finalize! rdb))))))

;;   (let ((locdbs (dbr:dbstruct-locdbs dbstruct)))
;;     (if (hash-table? locdbs)
;; 	(for-each (lambda (run-id)
;; 		    (db:close-run-db dbstruct run-id))
;; 		  (hash-table-keys locdbs)))))

;; (define (db:open-inmem-db)
;;   (let* ((db      (sqlite3:open-database ":memory:"))
;; 	 (handler (make-busy-timeout 3600)))
;;     (sqlite3:set-busy-handler! db handler)
;;     (db:initialize-run-id-db db)
;;     (cons db #f)))

;; use bunch of Unix commands to try to break the lock and recreate the db
;;
(define (db:move-and-recreate-db dbdat)
  (let* ((dbpath   (db:dbdat-get-path        dbdat))
	 (dbdir    (pathname-directory       dbpath))
	 (fname    (pathname-strip-directory dbpath))
	 (fnamejnl (conc fname "-journal"))
	 (tmpname  (conc fname "." (current-process-id)))
	 (tmpjnl   (conc fnamejnl "." (current-process-id))))
    (debug:print-error 0 *default-log-port* "" fname " appears corrupted. Making backup \"old/" fname "\"")
    (system (conc "cd " dbdir ";mkdir -p old;cat " fname " > old/" tmpname))
    (system (conc "rm -f " dbpath))
    (if (common:file-exists? fnamejnl)
	(begin
	  (debug:print-error 0 *default-log-port* "" fnamejnl " found, moving it to old dir as " tmpjnl)
	  (system (conc "cd " dbdir ";mkdir -p old;cat " fnamejnl " > old/" tmpjnl))
	  (system (conc "rm -f " dbdir "/" fnamejnl))))
    ;; attempt to recreate database
    (system (conc "cd " dbdir ";sqlite3 old/" tmpname " .dump | sqlite3 " fname))))
    
(define (db:patch-schema-rundb frundb)
  ;;
  ;; remove this some time after September 2016 (added in version v1.6031
  ;;
  (for-each
   (lambda (table-name)
     (handle-exceptions
      exn
      (if (string-match ".*duplicate.*" ((condition-property-accessor 'exn 'message) exn))
          (debug:print 0 *default-log-port* "Column last_update already added to " table-name " table")
          (db:general-sqlite-error-dump exn "alter table " table-name " ..." #f "none"))
      (sqlite3:execute
       frundb
       (conc "ALTER TABLE " table-name " ADD COLUMN last_update INTEGER DEFAULT 0")))
     (sqlite3:execute
      frundb
      (conc "DROP TRIGGER IF EXISTS update_" table-name "_trigger;"))
     (sqlite3:execute
      frundb
      (conc "CREATE TRIGGER IF NOT EXISTS update_" table-name "_trigger AFTER UPDATE ON " table-name "
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE " table-name " SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;"))
     )
   '("tests" "test_steps" "test_data")))

(define (db:patch-schema-maindb maindb)
  ;;
  ;; remove all these some time after september 2016 (added in v1.6031
  ;;
  (for-each
   (lambda (column type default)
     (handle-exceptions
	 exn
	 (if (string-match ".*duplicate.*" ((condition-property-accessor 'exn 'message) exn))
	     (debug:print 0 *default-log-port* "Column " column " already added to runs table")
	     (db:general-sqlite-error-dump exn "alter table runs ..." #f "none"))
       (sqlite3:execute
	maindb
	(conc "ALTER TABLE runs ADD COLUMN " column " " type " DEFAULT " default))))
   (list "last_update" "contour")
   (list "INTEGER"     "TEXT"   )
   (list "0"           "''"   ))
  ;; these schema changes don't need exception handling
  (sqlite3:execute
   maindb
   "CREATE TRIGGER IF NOT EXISTS update_runs_trigger AFTER UPDATE ON runs
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE runs SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;")
  (sqlite3:execute maindb "CREATE TABLE IF NOT EXISTS run_stats (
                              id     INTEGER PRIMARY KEY,
                              run_id INTEGER,
                              state  TEXT,
                              status TEXT,
                              count  INTEGER,
                              last_update INTEGER DEFAULT (strftime('%s','now')))")
  (sqlite3:execute maindb "CREATE TRIGGER  IF NOT EXISTS update_run_stats_trigger AFTER UPDATE ON run_stats
                             FOR EACH ROW
                               BEGIN 
                                 UPDATE run_stats SET last_update=(strftime('%s','now'))
                                   WHERE id=old.id;
                               END;")
  (sqlite3:execute maindb "CREATE TABLE IF NOT EXISTS test_rundat (
                              id           INTEGER PRIMARY KEY,
                              test_id      INTEGER,
                              update_time  TIMESTAMP,
                              cpuload      INTEGER DEFAULT -1,
                              diskfree     INTEGER DEFAULT -1,
                              diskusage    INTGER DEFAULT -1,
                              run_duration INTEGER DEFAULT 0);"))

(define (db:adj-target db)
  (let ((fields    (configf:get-section *configdat* "fields"))
	(field-num 0))
    ;; because we will be refreshing the keys table it is best to clear it here
    (sqlite3:execute db "DELETE FROM keys;")
    (for-each
     (lambda (field)
       (let ((column (car field))
	     (spec   (cadr field)))
	 (handle-exceptions
	  exn
	  (if (string-match ".*duplicate.*" ((condition-property-accessor 'exn 'message) exn))
	      (debug:print 0 *default-log-port* "Target field " column " already exists in the runs table")
	      (db:general-sqlite-error-dump exn "alter table runs ..." #f "none"))
	  ;; Add the column if needed
	  (sqlite3:execute
	   db
	   (conc "ALTER TABLE runs ADD COLUMN " column " " spec)))
	 ;; correct the entry in the keys column
	 (sqlite3:execute
	  db
	  "INSERT INTO keys (id,fieldname,fieldtype) VALUES (?,?,?);"
	  field-num column spec)
	 ;; fill in blanks (not allowed as it would be part of the path
	 (sqlite3:execute
	  db
	  (conc "UPDATE runs SET " column "='x' WHERE " column "='';"))
	 (set! field-num (+ field-num 1))))
     fields)))
  
(define *global-db-store* (make-hash-table))

(define (db:get-access-mode)
  (if (args:get-arg "-use-db-cache") 'cached 'rmt))

;; Add db direct
;;
(define (db:dispatch-query access-mode rmt-cmd db-cmd . params)
  (if (eq? access-mode 'cached)
      (debug:print 2 *default-log-port* "not doing cached calls right now"))
;;      (apply db:call-with-cached-db db-cmd params)
      (apply rmt-cmd params))
;;)

;; return the target db handle so it can be used
;;
(define (db:cache-for-read-only source target #!key (use-last-update #f))
  (if (and (hash-table-ref/default *global-db-store* target #f)
	   (>= (file-modification-time target)(file-modification-time source)))
      (hash-table-ref *global-db-store* target)
      (let* ((toppath   (launch:setup))
	     (targ-db-last-mod (if (common:file-exists? target)
				   (file-modification-time target)
				   0))
	     (cache-db  (or (hash-table-ref/default *global-db-store* target #f)
			    (db:open-megatest-db path: target)))
	     (source-db (db:open-megatest-db path: source))
	     (curr-time (current-seconds))
	     (res      '())
	     (last-update (if use-last-update (cons "last_update" targ-db-last-mod) #f)))
	(db:sync-tables (db:sync-main-list source-db) last-update source-db cache-db)
	(db:sync-tables db:sync-tests-only last-update source-db cache-db)
	(hash-table-set! *global-db-store* target cache-db)
	cache-db)))

;; ;; call a proc with a cached db
;; ;;
;; (define (db:call-with-cached-db proc . params)
;;   ;; first cache the db in /tmp
;;   (let* ((cname-part (conc "megatest_cache/" (common:get-testsuite-name)))
;; 	 (fname      (conc  (common:get-area-path-signature) ".db"))
;; 	 (cache-dir  (common:get-create-writeable-dir
;; 		      (list (conc "/tmp/" (current-user-name) "/" cname-part)
;; 			    (conc "/tmp/" (current-user-name) "-" cname-part)
;; 			     (conc "/tmp/" (current-user-name) "_" cname-part))))
;; 	 (megatest-db (conc *toppath* "/megatest.db")))
;;     ;; (debug:print-info 0 *default-log-port* "Using cache dir " cache-dir)
;;     (if (not cache-dir)
;; 	(begin
;; 	  (debug:print 0 *default-log-port* "ERROR: Failed to find an area to write the cache db")
;; 	  (exit 1))
;; 	(let* ((th1      (make-thread
;; 			  (lambda ()
;; 			    (if (and (common:file-exists? megatest-db)
;; 				     (file-write-access? megatest-db))
;; 				(begin
;; 				  (db:sync-to-megatest.db dbstruct 'timestamps) ;; internally mutexes on *db-local-sync*
;; 				  (debug:print-info 2 *default-log-port* "Done syncing to megatest.db"))))
;; 			  "call-with-cached-db sync-to-megatest.db"))
;; 	       (cache-db (db:cache-for-read-only
;; 			  megatest-db
;; 			  (conc cache-dir "/" fname)
;; 			  use-last-update: #t)))
;; 	  (thread-start! th1)
;; 	  (apply proc cache-db params)
;; 	  ))))

;; options:
;;
;;  'killservers  - kills all servers
;;  'dejunk       - removes junk records
;;  'adj-testids  - move test-ids into correct ranges
;;  'old2new      - sync megatest.db to /tmp/.../megatest.db and /tmp/.../megatest_ref.db
;;  'new2old      - sync /tmp/.../megatest.db to megatest.db and /tmp/.../megatest_ref.db (and update data_synced)
;;  'closeall     - close all opened dbs
;;  'schema       - attempt to apply schema changes
;;  run-ids: '(1 2 3 ...) or #f (for all)
;;
(define (db:multi-db-sync dbstruct . options)
  ;; (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))
	 (allow-cleanup #t) ;; (if run-ids #f #t))
	 (servers (server:get-list *toppath*)) ;; (tasks:get-all-servers (db:delay-if-busy tdbdat)))
	 (data-synced 0)) ;; count of changed records (I hope)
    
    (for-each
     (lambda (option)
       
       (case option
	 ;; kill servers
	 ((killservers)
	  (for-each
	   (lambda (server)
             (handle-exceptions
             exn
             (begin 
               (debug:print-info 0 *default-log-port*  "Unable to get host and/or port from " servr ", exn=" exn)     
               #f)
	     (match-let (((mod-time host port start-time server-id pid) server))
	       (if (and host pid)
		   (tasks:kill-server host pid)))))
	   servers)

          ;; /tmp/bjbarcla/megatest_localdb/fullrun/.nfs.pdx.disks.icf_env_disk001.bjbarcla.gwa.issues.mtdev.matt-bisect.megatest.ext-tests.runs.all.v1.65.1.6524.dev.bb-24-justrollup-f8.rollup.fullrun/megatest.db.lock
          (delete-file* (common:get-sync-lock-filepath))
          )
	 
	 ;; clear out junk records
	 ;;
	 ((dejunk)
	  ;; (db:delay-if-busy mtdb) ;; ok to delay on mtdb
	  (when (file-write-access? (db:dbdat-get-path mtdb)) (db:clean-up mtdb))
	  (db:clean-up tmpdb)
	  (db:clean-up refndb))

	 ;; sync runs, test_meta etc.
	 ;;
	 ((old2new)
	  (set! data-synced
	    (+ (db:sync-tables (db:sync-all-tables-list dbstruct) #f mtdb tmpdb refndb)
	       data-synced)))
	 
	 ;; now ensure all newdb data are synced to megatest.db
	 ;; do not use the run-ids list passed in to the function
	 ;;
	 ((new2old)
	  (set! data-synced
	    (+ (db:sync-tables (db:sync-all-tables-list dbstruct) #f tmpdb refndb mtdb)
	       data-synced)))

	 ((adj-target)
	  (db:adj-target (db:dbdat-get-db mtdb))
	  (db:adj-target (db:dbdat-get-db tmpdb))
	  (db:adj-target (db:dbdat-get-db refndb)))
	 
	 ((schema)
	  (db:patch-schema-maindb (db:dbdat-get-db mtdb))
	  (db:patch-schema-maindb (db:dbdat-get-db tmpdb))
	  (db:patch-schema-maindb (db:dbdat-get-db refndb))
	  (db:patch-schema-rundb  (db:dbdat-get-db mtdb))
	  (db:patch-schema-rundb  (db:dbdat-get-db tmpdb))
	  (db:patch-schema-rundb  (db:dbdat-get-db refndb))))
       
       (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb))
     options)
    data-synced))

(define (db:tmp->megatest.db-sync dbstruct last-update)
  (let* ((mtdb        (dbr:dbstruct-mtdb dbstruct))
	 (tmpdb       (db:get-db dbstruct))
	 (refndb      (dbr:dbstruct-refndb dbstruct))
	 (res         (db:sync-tables (db:sync-all-tables-list dbstruct) last-update tmpdb refndb mtdb)))
    (stack-push! (dbr:dbstruct-dbstack dbstruct) tmpdb)
    res))

;;;; run-ids
;;    if #f use *db-local-sync* : or 'local-sync-flags
;;    if #t use timestamps      : or 'timestamps
;;
;;  NB// no-sync-db is the db handle, not a flag!
;;
(define (db:sync-to-megatest.db dbstruct #!key (no-sync-db #f)) 
  (let* ((start-time         (current-seconds))
	 (last-full-update   (if no-sync-db
				 (db:no-sync-get/default no-sync-db "LAST_FULL_UPDATE" 0)
				 0))
	 (full-sync-needed   (> (- start-time last-full-update) 3600)) ;; every hour do a full sync
	 (last-update        (if full-sync-needed
				 0
				 (if no-sync-db
				     (db:no-sync-get/default no-sync-db "LAST_UPDATE" 0)
				     0))) ;; (or (db:get-var dbstruct "LAST_UPDATE") 0))
	 (sync-needed        (> (- start-time last-update) 6))
	 (res                (if (or sync-needed ;; don't sync if a sync already occurred in the past 6 seconds
				     full-sync-needed)
				 (begin
				   (if no-sync-db
				       (begin
					 (if full-sync-needed (db:no-sync-set no-sync-db "LAST_FULL_UPDATE" start-time))
					 (db:no-sync-set no-sync-db "LAST_UPDATE" start-time)))
				   (db:tmp->megatest.db-sync dbstruct last-update))
				 0))
	 (sync-time           (- (current-seconds) start-time)))
      (debug:print-info 3 *default-log-port* "Sync of newdb to olddb completed in " sync-time " seconds pid="(current-process-id))
      (if (common:low-noise-print 30 "sync new to old")
          (if sync-needed
              (debug:print-info 0 *default-log-port* "Sync of " res " records from newdb to olddb completed in " sync-time " seconds pid="(current-process-id))
              (debug:print-info 0 *default-log-port* "No sync needed, last updated " (- start-time last-update) " seconds ago")))
      res))

;; keeping it around for debugging purposes only
#;(define (open-run-close-no-exception-handling  proc idb . params)
  (debug:print-info 11 *default-log-port* "open-run-close-no-exception-handling START given a db=" (if idb "yes " "no ") ", params=" params)
  (print "I don't work anymore. open-run-close-no-exception-handling needs fixing or removing...")
  (exit)
  (if (or *db-write-access*
	  (not #t)) ;; was: (member proc * db:all-write-procs *)))
      (let* ((db (cond
		  ((pair? idb)                 (db:dbdat-get-db idb))
		  ((sqlite3:database? idb)     idb)
		  ((not idb)                   (debug:print-error 0 *default-log-port* "cannot open-run-close with #f anymore"))
		  ((procedure? idb)            (idb))
		  (else   	               (debug:print-error 0 *default-log-port* "cannot open-run-close with #f anymore"))))
	     (res #f))
	(set! res (apply proc db params))
	(if (not idb)(sqlite3:finalize! dbstruct))
	(debug:print-info 11 *default-log-port* "open-run-close-no-exception-handling END" )
	res)
      #f))

#;(define (open-run-close-exception-handling proc idb . params)
  (handle-exceptions
   exn
   (let ((sleep-time (random 30))
	 (err-status ((condition-property-accessor 'sqlite3 'status #f) exn)))
     (case err-status
       ((busy)
	(thread-sleep! sleep-time))
       (else
	(debug:print 0 *default-log-port* "EXCEPTION: database probably overloaded or unreadable.")
	(debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	(debug:print 5 *default-log-port* "exn=" (condition->list exn))
	(debug:print 0 *default-log-port* " status:  " ((condition-property-accessor 'sqlite3 'status) exn))
	(print-call-chain (current-error-port))
	(thread-sleep! sleep-time)
	(debug:print-info 0 *default-log-port* "trying db call one more time....this may never recover, if necessary kill process " (current-process-id) " on host " (get-host-name) " to clean up")))
     (apply open-run-close-exception-handling proc idb params))
   (apply open-run-close-no-exception-handling proc idb params)))

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

;;======================================================================
;; A R C H I V E S
;;======================================================================

;; dneeded is minimum space needed, scan for existing archives that 
;; are on disks with adequate space and already have this test/itempath
;; archived
;;
(define (db:archive-get-allocations dbstruct testname itempath dneeded)
  (let* ((dbdat        (db:get-db dbstruct)) ;; archive tables are in main.db
	 (db           (db:dbdat-get-db dbdat))
	 (res          '())
	 (blocks       '())) ;; a block is an archive chunck that can be added too if there is space
    (sqlite3:for-each-row
     (lambda (id archive-disk-id disk-path last-du last-du-time)
       (set! res (cons (vector id archive-disk-id disk-path last-du last-du-time) res)))
     db
     "SELECT b.id,b.archive_disk_id,b.disk_path,b.last_du,b.last_du_time FROM archive_blocks AS b
        INNER JOIN archive_allocations AS a ON a.archive_block_id=b.id
        WHERE a.testname=? AND a.item_path=?;" 
     testname itempath)
    ;; Now res has list of candidate paths, look in archive_disks for candidate with potential free space
    (if (null? res)
	'()
	(sqlite3:for-each-row
	 (lambda (id archive-area-name disk-path last-df last-df-time)
	   (set! blocks (cons (vector id archive-area-name disk-path last-df last-df-time) blocks)))
	 db 
	 (conc
	  "SELECT d.id,d.archive_area_name,disk_path,last_df,last_df_time FROM archive_disks AS d
             INNER JOIN archive_blocks AS b ON d.id=b.archive_disk_id
             WHERE b.id IN (" (string-intersperse (map conc res) ",") ") AND
         last_df > ?;")
	 dneeded))
    (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
    blocks))
    
;; returns id of the record, register a disk allocated to archiving and record it's last known
;; available space
;;
(define (db:archive-register-disk dbstruct bdisk-name bdisk-path df)
  (let* ((dbdat        (db:get-db dbstruct)) ;; archive tables are in main.db
	 (db           (db:dbdat-get-db dbdat))
	 (res          #f))
    (sqlite3:for-each-row
     (lambda (id)
       (set! res id))
     db
     "SELECT id FROM archive_disks WHERE archive_area_name=? AND disk_path=?;"
     bdisk-name bdisk-path)
    (if res ;; record exists, update df and return id
	(begin
	  (sqlite3:execute db "UPDATE archive_disks SET last_df=?,last_df_time=(strftime('%s','now'))
                                  WHERE archive_area_name=? AND disk_path=?;"
			   df bdisk-name bdisk-path)
          (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
	  res)
	(begin
	  (sqlite3:execute
	   db
	   "INSERT OR REPLACE INTO archive_disks (archive_area_name,disk_path,last_df)
                VALUES (?,?,?);"
	   bdisk-name bdisk-path df)
          (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
	  (db:archive-register-disk dbstruct bdisk-name bdisk-path df)))))

;; record an archive path created on a given archive disk (identified by it's bdisk-id)
;; if path starts with / then it is full, otherwise it is relative to the archive disk
;; preference is to store the relative path.
;;
(define (db:archive-register-block-name dbstruct bdisk-id archive-path #!key (du #f))
  (let* ((dbdat        (db:get-db dbstruct)) ;; archive tables are in main.db
	 (db           (db:dbdat-get-db dbdat))
	 (res          #f))
    ;; first look to see if this path is already registered
    (sqlite3:for-each-row
     (lambda (id)
       (set! res id))
     db
     "SELECT id FROM archive_blocks WHERE archive_disk_id=? AND disk_path=?;"
     bdisk-id archive-path)
    (if res ;; record exists, update du if applicable and return res
	(if du (sqlite3:execute db "UPDATE archive_blocks SET last_du=?,last_du_time=(strftime('%s','now'))
                                          WHERE archive_disk_id=? AND disk_path=?;"
				bdisk-id archive-path du))
	(begin
	  (sqlite3:execute db "INSERT OR REPLACE INTO archive_blocks (archive_disk_id,disk_path,last_du)
                                                        VALUES (?,?,?);"
			   bdisk-id archive-path (or du 0))
	  (set! res (db:archive-register-block-name dbstruct bdisk-id archive-path du: du))))
    (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
    res))


;; The "archived" field in tests is overloaded; 0 = not archived, > 0 archived in block with given id
;;
(define (db:test-set-archive-block-id dbstruct run-id test-id archive-block-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (sqlite3:execute db "UPDATE tests SET archived=? WHERE id=?;"
		      archive-block-id test-id))))
 
;; Look up the archive block info given a block-id
;;
(define (db:test-get-archive-block-info dbstruct archive-block-id)
  (db:with-db
   dbstruct
   #f
   #f
   (lambda (db)
     (let ((res #f))
       (sqlite3:for-each-row 
	;;        0         1           2        3          4           5
	(lambda (id archive-disk-id disk-path last-du last-du-time creation-time)
	  (set! res (vector id archive-disk-id disk-path last-du last-du-time creation-time)))
	db
	"SELECT id,archive_disk_id,disk_path,last_du,last_du_time,creation_time FROM archive_blocks WHERE id=?;"
	archive-block-id)
       res))))

;; (define (db:archive-allocate-testsuite/area-to-block block-id testsuite-name areakey)
;;   (let* ((dbdat        (db:get-db dbstruct #f)) ;; archive tables are in main.db
;; 	 (db           (db:dbdat-get-db dbdat))
;; 	 (res          '())
;; 	 (blocks       '())) ;; a block is an archive chunck that can be added too if there is space
;;     (sqlite3:for-each-row  #f)

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

(define (open-logging-db)
  (let* ((dbpath    (conc (if *toppath* (conc *toppath* "/") "") "logging.db")) ;; fname)
	 (dbexists  (common:file-exists? dbpath))
	 (db        (sqlite3:open-database dbpath))
	 (handler   (sqlite3: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);")
	  (db:set-sync db) ;; (sqlite3:execute db (conc "PRAGMA synchronous = 0;"))
	  ))
    db))

(define (db:log-local-event . loglst)
  (let ((logline (apply conc loglst)))
    (db:log-event logline)))

(define (db:log-event logline)
  (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))

;;======================================================================
;; D B   U T I L S
;;======================================================================

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

(define (db:have-incompletes? dbstruct run-id ovr-deadtime)
  (let* ((incompleted '())
	 (oldlaunched '())
	 (toplevels   '())
	 (deadtime-str (configf:lookup *configdat* "setup" "deadtime"))
	 (deadtime     (if (and deadtime-str
				(string->number deadtime-str))
			   (string->number deadtime-str)
			   72000))) ;; twenty hours
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (if (number? ovr-deadtime)(set! deadtime ovr-deadtime))
       
       ;; in RUNNING or REMOTEHOSTSTART for more than 10 minutes
       ;;
       ;; HOWEVER: this code in run:test seems to work fine
       ;;              (> (- (current-seconds)(+ (db:test-get-event_time testdat)
       ;;                     (db:test-get-run_duration testdat)))
       ;;                    600) 
       ;; (db:delay-if-busy dbdat)
       (sqlite3:for-each-row 
        (lambda (test-id run-dir uname testname item-path)
          (if (and (equal? uname "n/a")
                   (equal? item-path "")) ;; this is a toplevel test
              ;; what to do with toplevel? call rollup?
              (begin
                (set! toplevels   (cons (list test-id run-dir uname testname item-path run-id) toplevels))
                (debug:print-info 0 *default-log-port* "Found old toplevel test in RUNNING state, test-id=" test-id))
              (set! incompleted (cons (list test-id run-dir uname testname item-path run-id) incompleted))))
        db
        "SELECT id,rundir,uname,testname,item_path FROM tests WHERE run_id=? AND (strftime('%s','now') - event_time) > (run_duration + ?) AND state IN ('RUNNING','REMOTEHOSTSTART');"
        run-id deadtime)

       ;; in LAUNCHED for more than one day. Could be long due to job queues TODO/BUG: Need override for this in config
       ;;
       ;; (db:delay-if-busy dbdat)
       (sqlite3:for-each-row
        (lambda (test-id run-dir uname testname item-path)
          (if (and (equal? uname "n/a")
                   (equal? item-path "")) ;; this is a toplevel test
              ;; what to do with toplevel? call rollup?
              (set! toplevels   (cons (list test-id run-dir uname testname item-path run-id) toplevels))
              (set! oldlaunched (cons (list test-id run-dir uname testname item-path run-id) oldlaunched))))
        db
        "SELECT id,rundir,uname,testname,item_path FROM tests WHERE run_id=? AND (strftime('%s','now') - event_time) > 86400 AND state IN ('LAUNCHED');"
        run-id)
       
       (debug:print-info 18 *default-log-port* "Found " (length oldlaunched) " old LAUNCHED items, " (length toplevels) " old LAUNCHED toplevel tests and " (length incompleted) " tests marked RUNNING but apparently dead.")
       (if (and (null? incompleted)
                (null? oldlaunched)
                (null? toplevels))
           #f
           #t)))))

(define (db:get-status-from-final-status-file run-dir)
  (let ((infile (conc run-dir "/.final-status")))
    ;; first verify we are able to write the output file
    (if (not (file-read-access? infile))
        (begin 
	  (debug:print 0 *default-log-port* "ERROR: cannot read " infile)
          (debug:print 0 *default-log-port* "ERROR: run-dir is " run-dir)
          #f
          )
        (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'));

(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")))
         (server-start-allowance 200)
         (server-overloaded-budget 200)
         (launch-monitor-off-time (or (configf:lookup-number *configdat* "setup" "test-stats-update-period") 30))
         (launch-monitor-on-time-budget 30)
         (launch-monitor-period (+ launch-monitor-off-time launch-monitor-on-time-budget server-overloaded-budget))
         (remotehoststart-deadtime-default (+ server-start-allowance server-overloaded-budget 30))
         (remotehoststart-deadtime (or deadtime-trim remotehoststart-deadtime-default))
         (running-deadtime-default (+ server-start-allowance (* 2 launch-monitor-period)))
         (running-deadtime (or deadtime-trim running-deadtime-default)) ;; two minutes (30 seconds between updates, this leaves 3x grace period)
         )
    (debug:print-info 4  *default-log-port* "running-deadtime = " running-deadtime)
    (debug:print-info 4  *default-log-port* "deadtime-trim = " deadtime-trim)

    (db:with-db 
     dbstruct #f #f
     (lambda (db)
       (let* ((stmth1 (db:get-cache-stmth
		       dbstruct db
		       "SELECT id,rundir,uname,testname,item_path,event_time,run_duration FROM tests 
                           WHERE run_id=? AND (strftime('%s','now') - event_time) > (run_duration + ?)
                                          AND state IN ('RUNNING');"))
	      (stmth2 (db:get-cache-stmth
		       dbstruct db
		       "SELECT id,rundir,uname,testname,item_path,event_time,run_duration FROM tests 
                           WHERE run_id=? AND (strftime('%s','now') - event_time) > (run_duration + ?)
                                          AND state IN ('REMOTEHOSTSTART');"))
	      (stmth3 (db:get-cache-stmth
		       dbstruct db
		       "SELECT id,rundir,uname,testname,item_path FROM tests
                           WHERE run_id=? AND (strftime('%s','now') - event_time) > 86400
                                          AND state IN ('LAUNCHED');")))
	 ;; in RUNNING or REMOTEHOSTSTART for more than 10 minutes
	 ;;
	 ;; HOWEVER: this code in run:test seems to work fine
	 ;;              (> (- (current-seconds)(+ (db:test-get-event_time testdat)
	 ;;                     (db:test-get-run_duration testdat)))
	 ;;                    600) 
	 ;; (db:delay-if-busy dbdat)
	 (sqlite3:for-each-row 
	  (lambda (test-id run-dir uname testname item-path event-time run-duration)
	    (if (and (equal? uname "n/a")
		     (equal? item-path "")) ;; this is a toplevel test
		;; what to do with toplevel? call rollup?
		(begin
		  (set! toplevels   (cons (list test-id run-dir uname testname item-path run-id) toplevels))
		  (debug:print-info 0 *default-log-port* "Found old toplevel test in RUNNING state, test-id=" test-id))
		(begin
		  (set! incompleted (cons (list test-id run-dir uname testname item-path run-id) incompleted))
		  (debug:print-info 0 *default-log-port* "Found old test in RUNNING state, test-id="
				    test-id" exceeded running-deadtime "running-deadtime" now="(current-seconds)
				    " event-time="event-time" run-duration="run-duration))))
	  stmth1
	  run-id running-deadtime) ;; default time 720 seconds
       
	 (sqlite3:for-each-row 
	  (lambda (test-id run-dir uname testname item-path event-time run-duration)
	    (if (and (equal? uname "n/a")
		     (equal? item-path "")) ;; this is a toplevel test
		;; what to do with toplevel? call rollup?
		(begin
		  (set! toplevels   (cons (list test-id run-dir uname testname item-path run-id) toplevels))
		  (debug:print-info 0 *default-log-port* "Found old toplevel test in RUNNING state, test-id=" test-id))
		(begin
		  (debug:print-info 0 *default-log-port* "Found old test in REMOTEHOSTSTART state, test-id=" test-id
				    " exceeded running-deadtime "running-deadtime" now="(current-seconds)" event-time="event-time
				    " run-duration="run-duration)
		  (set! incompleted (cons (list test-id run-dir uname testname item-path run-id) incompleted)))))
	  stmth2
	  run-id remotehoststart-deadtime) ;; default time 230 seconds
	 
	 ;; in LAUNCHED for more than one day. Could be long due to job queues TODO/BUG: Need override for this in config
	 ;;
	 ;; (db:delay-if-busy dbdat)
	 (sqlite3:for-each-row
	  (lambda (test-id run-dir uname testname item-path)
	    (if (and (equal? uname "n/a")
		     (equal? item-path "")) ;; this is a toplevel test
		;; what to do with toplevel? call rollup?
		(set! toplevels   (cons (list test-id run-dir uname testname item-path run-id) toplevels))
		(begin
		  (debug:print-info 0 *default-log-port* "Found old test in LAUNCHED state, test-id=" test-id
				    " 1 day since event_time marked")
                (set! oldlaunched (cons (list test-id run-dir uname testname item-path run-id) oldlaunched)))))
	  stmth3
	  run-id)
       
	 (debug:print-info 18 *default-log-port* "Found " (length oldlaunched) " old LAUNCHED items, "
			   (length toplevels) " old LAUNCHED toplevel tests and "
			   (length incompleted) " tests marked RUNNING but apparently dead."))

	 ;; These are defunct tests, do not do all the overhead of set-state-status. Force them to INCOMPLETE.
       ;;
	 ;; (db:delay-if-busy dbdat)
	 (let* ((min-incompleted-ids (map car incompleted)) ;; do 'em all
		(all-ids             (append min-incompleted-ids (map car oldlaunched))))
	   (if (> (length all-ids) 0)
	       (begin
		 ;; (launch:is-test-alive "localhost" 435)
		 (debug:print 0 *default-log-port* "WARNING: Marking test(s); " (string-intersperse (map conc all-ids) ", ")
			      " as DEAD")
		 (for-each
                  (lambda (test-id)
                    (let* (;; (run-dir (db:test-get-rundir-from-test-id dbstruct run-id test-id))
			   (tinfo   (db:get-test-info-by-id dbstruct run-id test-id))
			   (run-dir (db:test-get-rundir     tinfo))
			   (host    (db:test-get-host       tinfo))
			   (pid     (db:test-get-process_id tinfo))
			   (result (db:get-status-from-final-status-file run-dir)))
		      (if (and (list? result) (> (length result) 1) (equal? "PASS" (cadr result)) (equal? "COMPLETED" (car result))) 
			  (begin
			    (debug:print 0 *default-log-port* "INFO: test " test-id " actually passed, so marking PASS not DEAD")
			    (db:set-state-status-and-roll-up-items
			     dbstruct run-id test-id 'foo "COMPLETED" "PASS"
			     "Test stopped responding but it has PASSED; marking it PASS in the DB."))
			  (let ((is-alive (and (not (eq? pid 0))  ;; 0 is default in re-used field "attemptnum" where pid stored.
					       (launch:is-test-alive host pid))))
			    (if is-alive
				(debug:print 0 *default-log-port* "INFO: test " test-id " on host " host
					     " has a process on pid " pid ", NOT setting to DEAD.")
				(begin
				  (debug:print 0 *default-log-port* "INFO: test " test-id
					       " final state/status is not COMPLETED/PASS. It is " result)
				  (db:set-state-status-and-roll-up-items
				   dbstruct run-id test-id 'foo "COMPLETED" "DEAD"
				   "Test stopped responding while in RUNNING or REMOTEHOSTSTART; presumed dead.")))))))
		  ;; call end of eud of run detection for posthook - from merge, is it needed?
		  ;; (launch:end-of-run-check run-id)
		  all-ids)
		 ;;call end of eud of run detection for posthook
		 (launch:end-of-run-check run-id)
		 )))))))

;; BUG: Probably broken - does not explicitly use run-id in the query
;;
(define (db:top-test-set-per-pf-counts dbstruct run-id test-name)
  (db:general-call dbstruct 'top-test-set-per-pf-counts (list test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name test-name)))

;; Clean out old junk and vacuum the database
;;
;; Ultimately do something like this:
;;
;; 1. Look at test records either deleted or part of deleted run:
;;    a. If test dir exists, set the the test to state='UNKNOWN', Set the run to 'unknown'
;;    b. If test dir gone, delete the test record
;; 2. Look at run records
;;    a. If have tests that are not deleted, set state='unknown'
;;    b. ....
;;
(define (db:clean-up dbdat)
  ;; (debug:print 0 *default-log-port* "WARNING: db clean up not fully ported to v1.60, cleanup action will be on megatest.db")
  (let* ((keep-record-age ( - (current-seconds) (common:hms-string->seconds (or (configf:lookup *configdat* "setup" "delete-record-age") "30d"))))
	 (db         (db:dbdat-get-db dbdat))
	 (count-stmt (sqlite3:prepare db "SELECT (SELECT count(id) FROM tests)+(SELECT count(id) FROM runs);"))
	(statements
	 (map (lambda (stmt)
		(sqlite3:prepare db stmt))
	      (list
	       ;; delete all tests that belong to runs that are 'deleted'
	       (conc "DELETE FROM tests WHERE run_id in (SELECT id FROM runs WHERE state='deleted') and last_update < " keep-record-age ";")
	       ;; delete all tests that are 'DELETED'
	       (conc "DELETE FROM tests WHERE state='DELETED' and last_update < " keep-record-age " ;")
	       ;; delete all tests that have no run
	       (conc "DELETE FROM tests WHERE run_id NOT IN (SELECT DISTINCT id FROM runs) and last_update < " keep-record-age "; ")
	       ;; delete all runs that are state='deleted'
	       (conc "DELETE FROM runs WHERE state='deleted' and last_update < " keep-record-age ";")
	       ;; delete empty runs
	       (conc "DELETE FROM runs WHERE id NOT IN (SELECT DISTINCT r.id FROM runs AS r INNER JOIN tests AS t ON t.run_id=r.id) and last_update < " keep-record-age ";")
	       ;; remove orphaned test_rundat entries
	       (conc "DELETE FROM test_rundat where test_id NOT IN (SELECT id FROM tests);")
	       ;; remove orphaned test_steps entries
	       (conc "DELETE FROM test_steps WHERE test_id NOT IN (SELECT id FROM tests);")
               ;; remove orphaned test_dat entries
	       (conc "DELETE FROM test_data WHERE test_id NOT IN (SELECT id FROM tests);")

	       ))))
    ;; (db:delay-if-busy dbdat)
    ;(debug:print-info 0 *default-log-port*  statements) 
    (sqlite3:with-transaction 
     db
     (lambda ()
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count before clean: " tot))
			     count-stmt)
       (map sqlite3:execute statements)
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count after  clean: " tot))
			     count-stmt)))
    (map sqlite3:finalize! statements)
    (sqlite3:finalize! count-stmt)
    ;; (db:find-and-mark-incomplete db)
    ;; (db:delay-if-busy dbdat)
    (sqlite3:execute db "VACUUM;")))

;; Clean out old junk and vacuum the database
;;
;; Ultimately do something like this:
;;
;; 1. Look at test records either deleted or part of deleted run:
;;    a. If test dir exists, set the the test to state='UNKNOWN', Set the run to 'unknown'
;;    b. If test dir gone, delete the test record
;; 2. Look at run records
;;    a. If have tests that are not deleted, set state='unknown'
;;    b. ....
;;
(define (db:clean-up-rundb dbdat)
  ;; (debug:print 0 *default-log-port* "WARNING: db clean up not fully ported to v1.60, cleanup action will be on megatest.db")
  (let* ((db         (db:dbdat-get-db dbdat))
	 (count-stmt (sqlite3:prepare db "SELECT (SELECT count(id) FROM tests);"))
	(statements
	 (map (lambda (stmt)
		(sqlite3:prepare db stmt))
	      (list
	       ;; delete all tests that belong to runs that are 'deleted'
	       ;; (conc "DELETE FROM tests WHERE run_id NOT IN (" (string-intersperse (map conc valid-runs) ",") ");")
	       ;; delete all tests that are 'DELETED'
	       "DELETE FROM tests WHERE state='DELETED';"
	       ))))
    ;; (db:delay-if-busy dbdat)
    (sqlite3:with-transaction 
     db
     (lambda ()
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count before clean: " tot))
			     count-stmt)
       (map sqlite3:execute statements)
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count after  clean: " tot))
			     count-stmt)))
    (map sqlite3:finalize! statements)
    (sqlite3:finalize! count-stmt)
    ;; (db:find-and-mark-incomplete db)
    ;; (db:delay-if-busy dbdat)
    (sqlite3:execute db "VACUUM;")))

;; Clean out old junk and vacuum the database
;;
;; Ultimately do something like this:
;;
;; 1. Look at test records either deleted or part of deleted run:
;;    a. If test dir exists, set the the test to state='UNKNOWN', Set the run to 'unknown'
;;    b. If test dir gone, delete the test record
;; 2. Look at run records
;;    a. If have tests that are not deleted, set state='unknown'
;;    b. ....
;;
(define (db:clean-up-maindb dbdat)
  ;; (debug:print 0 *default-log-port* "WARNING: db clean up not fully ported to v1.60, cleanup action will be on megatest.db")
  (let* ((db         (db:dbdat-get-db dbdat))
	 (count-stmt (sqlite3:prepare db "SELECT (SELECT count(id) FROM runs);"))
	 (statements
	  (map (lambda (stmt)
		 (sqlite3:prepare db stmt))
	       (list
		;; delete all tests that belong to runs that are 'deleted'
		;; (conc "DELETE FROM tests WHERE run_id NOT IN (" (string-intersperse (map conc valid-runs) ",") ");")
		;; delete all tests that are 'DELETED'
		"DELETE FROM runs WHERE state='deleted';"
		)))
	 (dead-runs '()))
    (sqlite3:for-each-row
     (lambda (run-id)
       (set! dead-runs (cons run-id dead-runs)))
       db
       "SELECT id FROM runs WHERE state='deleted';")
    ;; (db:delay-if-busy dbdat)
    (sqlite3:with-transaction 
     db
     (lambda ()
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count before clean: " tot))
			     count-stmt)
       (map sqlite3:execute statements)
       (sqlite3:for-each-row (lambda (tot)
			       (debug:print-info 0 *default-log-port* "Records count after  clean: " tot))
			     count-stmt)))
    (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))

;;======================================================================
;; 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
     (lambda (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 (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 (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 (db)
		(sqlite3:execute 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 (db)
		(sqlite3:execute db "UPDATE metadat SET val=val+? WHERE var=?;" val var))))

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

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

(define (db:open-no-sync-db)
  (let* ((dbpath (db:dbfile-path))
	 (dbname (conc dbpath "/no-sync.db"))
	 (db-exists (common:file-exists? dbname))
	 (db     (sqlite3:open-database dbname)))
    (sqlite3:set-busy-handler! db (sqlite3:make-busy-timeout 136000))
    (if (not db-exists)
	(begin
	  (sqlite3:execute db "PRAGMA synchronous = 0;")
	  (sqlite3:execute db "CREATE TABLE IF NOT EXISTS no_sync_metadat (var TEXT,val TEXT, CONSTRAINT no_sync_metadat_constraint UNIQUE (var));")
	  (sqlite3:execute db "PRAGMA journal_mode=WAL;")))
    db))

;; if we are not a server create a db handle. this is not finalized
;; so watch for problems. I'm still not clear if it is needed to manually
;; finalize sqlite3 dbs with the sqlite3 egg.
;;
(define (db:no-sync-db db-in)
  (mutex-lock! *db-access-mutex*)
  (let ((res (if db-in
                 db-in
                 (let ((db (db:open-no-sync-db)))
                   (set! *no-sync-db* db)
                   db))))
    (mutex-unlock! *db-access-mutex*)
    res))

(define (db:no-sync-set db var val)
  (sqlite3:execute (db:no-sync-db db) "INSERT OR REPLACE INTO no_sync_metadat (var,val) VALUES (?,?);" var val))

(define (db:no-sync-del! db var)
  (sqlite3:execute (db:no-sync-db db) "DELETE FROM no_sync_metadat WHERE var=?;" var))

(define (db:no-sync-get/default db var default)
  (let ((res default))
    (sqlite3:for-each-row
     (lambda (val)
       (set! res val))
     (db:no-sync-db db)
     "SELECT val FROM no_sync_metadat WHERE var=?;"
     var)
    (if res
        (let ((newres (if (string? res)
			  (string->number res)
			  #f)))
          (if newres
              newres
              res))
        res)))

(define (db:no-sync-close-db db stmt-cache)
  (db:safely-close-sqlite3-db db stmt-cache))

;; transaction protected lock aquisition
;; either:
;;    fails    returns  (#f . lock-creation-time)
;;    succeeds (returns (#t . lock-creation-time)
;; use (db:no-sync-del! db keyname) to release the lock
;;
(define (db:no-sync-get-lock db-in keyname)
  (let ((db (db:no-sync-db db-in)))
    (sqlite3:with-transaction
     db
     (lambda ()
       (handle-exceptions
	   exn
	 (let ((lock-time (current-seconds)))
	   (debug:print-info 2 *default-log-port* "db:no-sync-get-lock keyname=" keyname ", lock-time=" lock-time ", exn=" exn)
	   (sqlite3:execute db "INSERT INTO no_sync_metadat (var,val) VALUES(?,?);" keyname lock-time)
	   `(#t . ,lock-time))
	 `(#f . ,(sqlite3:first-result db "SELECT val FROM no_sync_metadat WHERE var=?;" keyname)))))))

;; 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

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

(define (db:get-keys dbstruct)
  (if *db-keys* *db-keys* 
      (let ((res '()))
	(db:with-db dbstruct #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)))

;; extract index number given a header/data structure
(define (db:get-index-by-header header field)
  (list-index (lambda (x)(equal? x field)) header))

;; look up values in a header/data structure
(define (db:get-value-by-header row header field)
  (if (or (null? header) (not row))
      #f
      (let loop ((hed (car header))
                 (tal (cdr header))
                 (n   0))
        (if (equal? hed field)
            (handle-exceptions
             exn
             (begin
               (debug:print 0 *default-log-port* "WARNING: attempt to read non-existant field, row="
			    row " header=" header " field=" field ", exn=" exn)
               #f)
             (vector-ref row n))
	    (if (null? tal) #f (loop (car tal)(cdr tal)(+ n 1)))))))

;; Accessors for the header/data structure
;; get rows and header from 
(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 (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 (db)
     (let ((res #f))
       (sqlite3:for-each-row
	(lambda (runname)
	  (set! res runname))
	db
	"SELECT runname FROM runs WHERE id=?;"
	run-id)
       res))))

(define (db:get-run-key-val dbstruct run-id key)
  (db:with-db
   dbstruct
   #f
   #f
   (lambda (db)
     (let ((res #f))
       (sqlite3:for-each-row
	(lambda (val)
	  (set! res val))
	db
	(conc "SELECT " key " FROM runs WHERE id=?;")
	run-id)
       res))))

;; keys list to key1,key2,key3 ...
(define (runs:get-std-run-fields keys remfields)
  (let* ((header    (append keys remfields))
	 (keystr    (conc (keys->keystr keys) ","
			  (string-intersperse remfields ","))))
    (list keystr header)))

;; make a query (fieldname like 'patt1' OR fieldname 
(define (db:patt->like fieldname pattstr #!key (comparator " OR "))
  (let ((patts (if (string? pattstr)
		   (string-split pattstr ",")
		   '("%"))))
    (string-intersperse (map (lambda (patt)
			       (let ((wildtype (if (substring-index "%" patt) "LIKE" "GLOB")))
				 (conc fieldname " " wildtype " '" patt "'")))
			     (if (null? patts)
				 '("")
				 patts))
			comparator)))


;; register a test run with the db, this accesses the main.db and does NOT
;; use server api
;;
(define (db:register-run dbstruct keyvals runname state status user contour-in)
  (let* ((keys      (map car keyvals))
	 (keystr    (keys->keystr keys))
	 (contour   (or contour-in ""))  ;; empty string to force no hierarcy and be backwards compatible.
	 (comma     (if (> (length keys) 0) "," ""))
	 (andstr    (if (> (length keys) 0) " AND " ""))
	 (valslots  (keys->valslots keys)) ;; ?,?,? ...
	 (allvals   (append (list runname state status user contour) (map cadr keyvals)))
	 (qryvals   (append (list runname) (map cadr keyvals)))
	 (key=?str  (string-intersperse (map (lambda (k)(conc k "=?")) keys) " AND ")))
    (debug:print 3 *default-log-port* "keys: " keys " allvals: " allvals " keyvals: " keyvals " key=?str is " key=?str)
    (debug:print 2 *default-log-port* "NOTE: using target " (string-intersperse (map cadr keyvals) "/") " for this run")
    (if (and runname (null? (filter (lambda (x)(not x)) keyvals))) ;; there must be a better way to "apply and"
	(db:with-db
	 dbstruct #f #f
	 (lambda (db)
	   (let ((res #f))
	     (apply sqlite3:execute db (conc "INSERT OR IGNORE INTO runs (runname,state,status,owner,event_time,contour" comma keystr ") VALUES (?,?,?,?,strftime('%s','now'),?" comma valslots ");")
		    allvals)
	     (apply sqlite3:for-each-row 
		    (lambda (id)
		      (set! res id))
		    db
		    (let ((qry (conc "SELECT id FROM runs WHERE (runname=? " andstr key=?str ");")))
		      qry)
		    qryvals)
	     (sqlite3:execute db "UPDATE runs SET state=?,status=?,event_time=strftime('%s','now') WHERE id=? AND state='deleted';" state status res)
	     res))) 
	(begin
	  (debug:print-error 0 *default-log-port* "Called without all necessary keys")
	  #f))))

;; replace header and keystr with a call to runs:get-std-run-fields
;;
;; keypatts: ( (KEY1 "abc%def")(KEY2 "%") )
;; runpatts: patt1,patt2 ...
;;
(define (db:get-runs dbstruct runpatt count offset keypatts)
  (let* ((res       '())
	 (keys       (db:get-keys dbstruct))
	 (runpattstr (db:patt->like "runname" runpatt))
	 (remfields  (list "id" "runname" "state" "status" "owner" "event_time"))
	 (header     (append keys remfields))
	 (keystr     (conc (keys->keystr keys) ","
			   (string-intersperse remfields ",")))
	 (qrystr     (conc "SELECT " keystr " FROM runs WHERE (" runpattstr ") " ;; runname LIKE ? "
			   ;; Generate: " AND x LIKE 'keypatt' ..."
			   (if (null? keypatts) ""
			       (conc " AND "
				     (string-join 
				      (map (lambda (keypatt)
					     (let ((key  (car keypatt))
						   (patt (cadr keypatt)))
					       (db:patt->like key patt)))
					   keypatts)
				      " AND ")))
			   " AND state != 'deleted' ORDER BY event_time DESC "
			   (if (number? count)
			       (conc " LIMIT " count)
			       "")
			   (if (number? offset)
			       (conc " OFFSET " offset)
			       ""))))
    (debug:print-info 11 *default-log-port* "db:get-runs START qrystr: " qrystr " keypatts: " keypatts " offset: " offset " limit: " count)
    (db:with-db dbstruct #f #f
		(lambda (db)		
		  (sqlite3:for-each-row
		   (lambda (a . x)
		     (set! res (cons (apply vector a x) res)))
		   db
		   qrystr
		   )))
    (debug:print-info 11 *default-log-port* "db:get-runs END qrystr: " qrystr " keypatts: " keypatts " offset: " offset " limit: " count)
    (vector header res)))


(define-record simple-run target id runname state status owner event_time)
(define-record-printer (simple-run x out)
  (fprintf out "#,(simple-run ~S ~S ~S ~S)"
	   (simple-run-target x) (simple-run-id x) (simple-run-runname x) (time->string (seconds->local-time (simple-run-event_time x) ))))

;; simple get-runs
;;
(define (db:simple-get-runs dbstruct runpatt count offset target last-update)
    (let* ((res       '())
	   (keys       (db:get-keys dbstruct))
	   (runpattstr (db:patt->like "runname" runpatt))
	   (remfields  (list "id" "runname" "state" "status" "owner" "event_time"))
	   (targstr    (string-intersperse keys "||'/'||"))
	   (keystr     (conc targstr " AS target,"
			     (string-intersperse remfields ",")))
	   (qrystr     (conc "SELECT " keystr " FROM runs WHERE (" runpattstr ") " ;; runname LIKE ? "
			     ;; Generate: " AND x LIKE 'keypatt' ..."
			     " AND target LIKE '" target "'"
			     " AND state != 'deleted' "
			     (if (number? last-update)
				 (conc " AND last_update >= " last-update)
				 "")
			     " ORDER BY event_time DESC "
			     (if (number? count)
				 (conc " LIMIT " count)
				 "")
			     (if (number? offset)
				 (conc " OFFSET " offset)
				 "")))
	   )
    (debug:print-info 11 *default-log-port* "db:get-runs START qrystr: " qrystr " target: " target " offset: " offset " limit: " count)
    (db:with-db dbstruct #f #f
		(lambda (db)		
		  (sqlite3:for-each-row
		   (lambda (target id runname state status owner event_time)
		     (set! res (cons (make-simple-run target id runname state status owner event_time) res)))
		   db
		   qrystr
		   )))
    (debug:print-info 11 *default-log-port* "db:get-runs END qrystr: " qrystr " target: " target " offset: " offset " limit: " count)
    res))

;; TODO: Switch this to use max(update_time) from each run db? Then if using a server there is no disk traffic (using inmem db)
;;
(define (db:get-changed-run-ids since-time)
  (let* ((dbdir      (db:dbfile-path)) ;; (configf:lookup *configdat* "setup" "dbdir"))
	 (alldbs     (glob (conc dbdir "/[0-9]*.db")))
	 (changed    (filter (lambda (dbfile)
			       (> (file-modification-time dbfile) since-time))
			     alldbs)))
    (delete-duplicates
     (map (lambda (dbfile)
	    (let* ((res (string-match ".*\\/(\\d)*\\.db" dbfile)))
	      (if res
		  (string->number (cadr res))
		  (begin
		    (debug:print 2 *default-log-port* "WARNING: Failed to process " dbfile " for run-id")
		    0))))
	  changed))))

;; Get all targets from the db
;;
(define (db:get-targets dbstruct)
  (let* ((res       '())
	 (keys       (db:get-keys dbstruct))
	 (header     keys) ;; (map key:get-fieldname keys))
	 (keystr     (keys->keystr keys))
	 (qrystr     (conc "SELECT " keystr " FROM runs WHERE state != 'deleted';"))
	 (seen       (make-hash-table)))
    (db:with-db
     dbstruct
     #f
     #f
     (lambda (db)
       (sqlite3:for-each-row
	(lambda (a . x)
	  (let ((targ (cons a x)))
	    (if (not (hash-table-ref/default seen targ #f))
		(begin
		  (hash-table-set! seen targ #t)
		  (set! res (cons (apply vector targ) res))))))
	db
	qrystr)
       (debug:print-info 11 *default-log-port* "db:get-targets END qrystr: " qrystr )
       (vector header res)))))

;; just get count of runs
(define (db:get-num-runs dbstruct runpatt)
  (db:with-db
   dbstruct
   #f
   #f
   (lambda (db)
     (let ((numruns 0))
       (debug:print-info 11 *default-log-port* "db:get-num-runs START " runpatt)
       (sqlite3:for-each-row 
	(lambda (count)
	  (set! numruns count))
	db
	"SELECT COUNT(id) FROM runs WHERE runname LIKE ? AND state != 'deleted';" runpatt)
       (debug:print-info 11 *default-log-port* "db:get-num-runs END " runpatt)
       numruns))))

;; just get count of runs
(define (db:get-runs-cnt-by-patt dbstruct runpatt targetpatt keys)
  (db:with-db
   dbstruct
   #f
   #f
   (lambda (db)
     (let ((numruns 0)
           (qry-str #f)
           (key-patt "")
	     	   (keyvals  (if targetpatt (keys:target->keyval keys targetpatt) '())))
     
    (for-each (lambda (keyval)
		(let* ((key    (car keyval))
		       (patt   (cadr keyval))
		       (fulkey (conc ":" key))
		       (wildtype (if (substring-index "%" patt) "like" "glob")))
         
		  (if patt
		      (set! key-patt (conc key-patt " AND " key " " wildtype " '" patt "'"))
		      (begin
			(debug:print-error 0 *default-log-port* "searching for runs with no pattern set for " fulkey)
			(exit 6)))))
	      keyvals)
    ;(print  runpatt " -- " key-patt)
    (set! qry-str (conc "SELECT COUNT(id) FROM runs WHERE state != 'deleted' AND runname  like '" runpatt "'" key-patt))
    ;(print qry-str )
       
       (sqlite3:for-each-row 
					 (lambda (count)
	  			    (set! numruns count))
				db
				qry-str)
       (debug:print-info 11 *default-log-port* "db:get-num-runs END " runpatt)
       numruns))))


;; (sqlite3#fold-row proc3670 init3671 db-or-stmt3672 . params3673)>
;; 
(define (db:get-raw-run-stats dbstruct run-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (sqlite3:fold-row
	(lambda (res state status count)
	  (cons (list state status count) res))
	'()
	db
	"SELECT state,status,count(id) AS count FROM tests WHERE run_id=? AND NOT(uname='n/a' AND item_path='') GROUP BY state,status;"
	run-id))))

;; Update run_stats for given run_id
;; input data is a list (state status count)
;;
(define (db:update-run-stats dbstruct run-id stats)
  ;; (mutex-lock! *db-transaction-mutex*)
  (db:with-db
   dbstruct
   #f
   #f

   (lambda (db)
     ;; remove previous data
     
     (let* ((stmt1 (sqlite3:prepare db "DELETE FROM run_stats WHERE run_id=? AND state=? AND status=?;"))
	    (stmt2 (sqlite3:prepare db "INSERT INTO run_stats (run_id,state,status,count) VALUES (?,?,?,?);"))
	    (res
	     (sqlite3:with-transaction
	      db
	      (lambda ()
		(for-each
		 (lambda (dat)
		   (sqlite3:execute stmt1 run-id (car dat)(cadr dat))
		   (apply sqlite3:execute stmt2 run-id dat))
		 stats)))))
       (sqlite3:finalize! stmt1)
       (sqlite3:finalize! stmt2)
       ;; (mutex-unlock! *db-transaction-mutex*)
       res))))

(define (db:get-main-run-stats dbstruct run-id)
  (db:with-db
   dbstruct
   #f ;; this data comes from main
   #f
   (lambda (db)
     (sqlite3:fold-row
	(lambda (res state status count)
	  (cons (list state status count) res))
	'()
	db
	"SELECT state,status,count FROM run_stats WHERE run_id=? AND run_id IN (SELECT id FROM runs WHERE state NOT IN ('DELETED','deleted'));"
	run-id))))

(define (db:print-current-query-stats)
  ;; generate stats from *db-api-call-time*
  (let ((ordered-keys (sort (hash-table-keys *db-api-call-time*)
			    (lambda (a b)
			      (let ((sum-a (common:sum (hash-table-ref *db-api-call-time* a)))
				    (sum-b (common:sum (hash-table-ref *db-api-call-time* b))))
				(> sum-a sum-b)))))
	(total        0))
    (for-each
     (lambda (cmd-key)
       (let* ((dat  (hash-table-ref *db-api-call-time* cmd-key))
	      (num  (length dat))
	      (avg  (if (> num 0)
			(/ (common:sum dat)(length dat)))))
	 (set! total (+ total num))
	 (debug:print-info 0 *default-log-port* cmd-key "\tavg: " avg " max: " (common:max dat) " min: " (common:min-max < dat) " num: " (length dat))))
     ordered-keys)
    (debug:print-info 0 *default-log-port* "TOTAL: " total " api calls since start.")))

(define (db:get-all-run-ids dbstruct)
  (db:with-db
   dbstruct
   #f
   #f
   (lambda (db)
     (let ((run-ids '()))
       (sqlite3:for-each-row
	(lambda (run-id)
	  (set! run-ids (cons run-id run-ids)))
	db
	"SELECT id FROM runs WHERE state != 'deleted' ORDER BY event_time DESC;")
    (reverse run-ids)))))

;; get some basic run stats
;;
;; data structure:
;;
;; ( (runname (( state  count ) ... ))
;;   (   ...
;;
(define (db:get-run-stats dbstruct)
  (let* ((totals       (make-hash-table))
	 (curr         (make-hash-table))
	 (res          '())
	 (runs-info    '()))
    ;; First get all the runname/run-ids
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row
	(lambda (run-id runname)
	  (set! runs-info (cons (list run-id runname) runs-info)))
	db
	"SELECT id,runname FROM runs WHERE state != 'deleted' ORDER BY event_time DESC;"))) ;; If you change this to the more logical ASC please adjust calls to db:get-run-stats
    ;; for each run get stats data
    (for-each
     (lambda (run-info)
       ;; get the net state/status counts for this run
       (let* ((run-id   (car  run-info))
	      (run-name (cadr run-info)))
	 (db:with-db
	  dbstruct
	  run-id
	  #f
	  (lambda (db)
	    (sqlite3:for-each-row
	     (lambda (state status count)
	       (let ((netstate (if (equal? state "COMPLETED") status state)))
		 (if (string? netstate)
		     (begin
		       (hash-table-set! totals netstate (+ (hash-table-ref/default totals netstate 0) count))
		       (hash-table-set! curr   netstate (+ (hash-table-ref/default curr   netstate 0) count))))))
	     db
	     "SELECT state,status,count(id) FROM tests AS t WHERE run_id=? GROUP BY state,status ORDER BY state,status DESC;"
             run-id)
	    ;; add the per run counts to res
	    (for-each (lambda (state)
			(set! res (cons (list run-name state (hash-table-ref curr state)) res)))
		      (sort (hash-table-keys curr) string>=))
	    (set! curr (make-hash-table))))))
     runs-info)
    (for-each (lambda (state)
		(set! res (cons (list "Totals" state (hash-table-ref totals state)) res)))
	      (sort (hash-table-keys totals) string>=))
    res))

;; db:get-runs-by-patt
;; get runs by list of criteria
;; register a test run with the db
;;
;; Use: (db:get-value-by-header (db:get-header runinfo)(db:get-rows runinfo))
;;  to extract info from the structure returned
;;
(define (db:get-runs-by-patt dbstruct keys runnamepatt targpatt offset limit fields last-update  sort-order ) ;; test-name)
  (let* ((tmp      (runs:get-std-run-fields keys (or fields '("id" "runname" "state" "status" "owner" "event_time"))))
	 (keystr   (car tmp))
	 (header   (cadr tmp))
	 (key-patt "")
	 (runwildtype (if (substring-index "%" runnamepatt) "like" "glob"))
	 (qry-str  #f)
	 (keyvals  (if targpatt (keys:target->keyval keys targpatt) '())))
    (for-each (lambda (keyval)
		(let* ((key    (car keyval))
		       (patt   (cadr keyval))
		       (fulkey (conc ":" key))
		       (wildtype (if (substring-index "%" patt) "like" "glob")))
		  (if patt
		      (set! key-patt (conc key-patt " AND " key " " wildtype " '" patt "'"))
		      (begin
			(debug:print-error 0 *default-log-port* "searching for runs with no pattern set for " fulkey)
			(exit 6)))))
	      keyvals)
    (set! qry-str (conc "SELECT " keystr " FROM runs WHERE state != 'deleted' AND runname " runwildtype " ? " key-patt 
			(if last-update
			       (conc " AND last_update >= " last-update " ")
			       " ")
			" ORDER BY event_time " sort-order " " 
			(if limit  (conc " LIMIT " limit)   "")
			(if offset (conc " OFFSET " offset) "")
			";"))
    (debug:print-info 4 *default-log-port* "runs:get-runs-by-patt qry=" qry-str " " runnamepatt)
    ;(print "runs:get-runs-by-patt qry=" qry-str " " runnamepatt)

    (vector header 
            (reverse
             (db:with-db dbstruct #f #f ;; reads db, does not write to it.
                         (lambda (db)
                           (sqlite3:fold-row
                            (lambda (res . r)
                              (cons (list->vector r) res))
                            '()
                            db
                            qry-str
                            runnamepatt)))))))

;; use (get-value-by-header (db:get-header runinfo)(db:get-rows runinfo))
;; NOTE: Does NOT return a list of rows (or one row) for the first slot of the vector
;;       this is inconsistent with get-runs but it makes some sense.
;;
(define (db:get-run-info dbstruct run-id)
  ;;(if (hash-table-ref/default *run-info-cache* run-id #f)
  ;;    (hash-table-ref *run-info-cache* run-id)
  (let* ((res       (vector #f #f #f #f))
	 (keys      (db:get-keys dbstruct))
	 (remfields (list "id" "runname" "state" "status" "owner" "event_time" "comment" "fail_count" "pass_count" "contour" "last_update")) ;;  "area_id"))
	 (header    (append keys remfields))
	 (keystr    (conc (keys->keystr keys) ","
			  (string-intersperse remfields ","))))
    (debug:print-info 11 *default-log-port* "db:get-run-info run-id: " run-id " header: " header " keystr: " keystr)
    
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (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 *default-log-port* "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)))

(define (db:set-comment-for-run dbstruct run-id comment)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (sqlite3:execute db "UPDATE runs SET comment=? WHERE id=?;" comment ;; (sdb:qry 'getid comment)
		      run-id))))

;; does not (obviously!) removed dependent data. But why not!!?
(define (db:delete-run dbstruct run-id)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (sqlite3:with-transaction
      db
      (lambda ()
        (sqlite3:execute db "DELETE FROM test_steps WHERE test_id IN (SELECT id FROM tests WHERE run_id=?);" run-id)
        (sqlite3:execute db "DELETE FROM test_data WHERE test_id IN (SELECT id FROM tests WHERE run_id=?);"  run-id)
        (sqlite3:execute db "UPDATE tests SET state='DELETED',comment='' WHERE run_id=?;" run-id)
        ;; (db:delay-if-busy dbdat)
        (sqlite3:execute db "UPDATE runs SET state='deleted',comment='' WHERE id=?;" run-id))))))

(define (db:update-run-event_time dbstruct run-id)
  (db:with-db
   dbstruct #f #t
   (lambda (db)
     (sqlite3:execute db "UPDATE runs SET event_time=strftime('%s','now') WHERE id=?;" run-id))))

(define (db:lock/unlock-run dbstruct run-id lock unlock user)
  (db:with-db
   dbstruct #f #t
   (lambda (db)
     (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-info 1 *default-log-port* "" newlockval " run number " run-id)))))

(define (db:set-run-status dbstruct run-id status msg)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
       (if msg
         (sqlite3:execute db "UPDATE runs SET status=?,comment=? WHERE id=?;" status msg run-id)
         (sqlite3:execute db "UPDATE runs SET status=? WHERE id=?;" status run-id)))))

(define (db:set-run-state-status dbstruct run-id state status )
  (db:with-db
   dbstruct #f #f
   (lambda (db)
          (sqlite3:execute db "UPDATE runs SET status=?,state=? WHERE id=?;" status state run-id))))



(define (db:get-run-status dbstruct run-id)
  (let ((res "n/a"))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (status)
	  (set! res status))
	db
	"SELECT status FROM runs WHERE id=?;" 
	run-id)
       res))))

(define (db:get-run-state dbstruct run-id)
  (let ((res "n/a"))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (status)
	  (set! res status))
	db
	"SELECT state FROM runs WHERE id=?;" 
	run-id)
       res))))


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

;; get key val pairs for a given run-id
;; ( (FIELDNAME1 keyval1) (FIELDNAME2 keyval2) ... )
(define (db:get-key-val-pairs dbstruct run-id)
  (let* ((keys (db:get-keys dbstruct))
	 (res  '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (for-each 
	(lambda (key)
	  (let ((qry (conc "SELECT " key " FROM runs WHERE id=?;")))
	    (sqlite3:for-each-row 
	     (lambda (key-val)
	       (set! res (cons (list key (if (string? key-val) key-val "")) res))) ;; replace non-string bad values with empty string to prevent crashes. This scenario can happen when Megatest is killed on updating the db
	     db qry run-id)))
	keys)))
       (reverse res)))

;; get key vals for a given run-id
(define (db:get-key-vals dbstruct run-id)
  (let* ((keys (db:get-keys dbstruct))
	 (res  '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (for-each 
	(lambda (key)
	  (let ((qry (conc "SELECT " key " FROM runs WHERE id=?;")))
	    ;; (db:delay-if-busy dbdat)
	    (sqlite3:for-each-row 
	     (lambda (key-val)
	       (set! res (cons (if (string? key-val) key-val "") res))) ;; check that the key-val is a string for cases where a crash injected bad data in the megatest.db
	     db qry run-id)))
	keys)))
    (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 dbstruct run-id)
  (let* ((keyvals (db:get-key-vals dbstruct run-id))
	 (thekey  (string-intersperse (map (lambda (x)(if x x "-na-")) keyvals) "/")))
    thekey))

;; Get run-ids for runs with same target but different runnames and NOT run-id
;;
(define (db:get-prev-run-ids dbstruct run-id)
  (let* ((keyvals (db:get-key-val-pairs dbstruct run-id))
	 (kvalues (map cadr keyvals))
	 (keys    (rmt:get-keys))
	 (qrystr  (string-intersperse (map (lambda (x)(conc x "=?")) keys) " AND ")))
    (let ((prev-run-ids '()))
      (if (null? keyvals)
          '()
          (begin
            (db:with-db dbstruct #f #f ;; #f means work with the zeroth db - i.e. the runs db
                        (lambda (db)
                          (apply sqlite3:for-each-row
                                 (lambda (id)
                                   (set! prev-run-ids (cons id prev-run-ids)))
                                 db
                                 (conc "SELECT id FROM runs WHERE " qrystr " AND state != 'deleted' AND id != ?;")
                                 (append kvalues (list run-id)))))
            prev-run-ids)))))

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

;; 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
;; mode:
;;  'dashboard - use state = 'COMPLETED' AND status in ( statuses ) OR state in ( states )
;;
(define (db:get-tests-for-run dbstruct run-id testpatt states statuses offset limit not-in sort-by sort-order qryvals last-update mode)
  (let* ((qryvalstr       (case qryvals
			    ((shortlist) "id,run_id,testname,item_path,state,status")
			    ((#f)        db:test-record-qry-selector) ;; "id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment")
			    (else        qryvals)))
	 (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 (eq? mode 'dashboard)
					" IN ('"
					(if not-in
					    " NOT IN ('"
					    " IN ('")) 
				    (string-intersperse states   "','")
				    "')")))
	 (statuses-qry    (if (null? statuses)
			      #f
			      (conc " status "
				    (if (eq? mode 'dashboard)
					" IN ('"
					(if not-in 
					    " NOT IN ('"
					    " IN ('") )
				    (string-intersperse statuses "','")
				    "')")))
	 (interim-qry       (conc " AND " (if not-in "NOT " "") "( state='COMPLETED' " (if statuses-qry (conc " AND " statuses-qry " ) ") " ) ")
				  (if states-qry
				      (conc (if not-in " AND " " OR ") states-qry ) ;; " ) ")
				      "")))
	 (states-statuses-qry 
	  (cond 
	   ((and states-qry statuses-qry)
	    (case mode
	      ((dashboard) 
	       (if not-in
		   (conc " AND (state='COMPLETED' AND status NOT IN ('" (string-intersperse statuses "','") "')) "
			 " OR (state != 'COMPLETED' AND state NOT IN ('" (string-intersperse states "','") "')) ")
		   (conc " AND (state='COMPLETED' AND status IN ('" (string-intersperse statuses "','") "')) "
			 " OR (state NOT IN ('COMPLETED','DELETED') AND state IN ('" (string-intersperse states "','") "')) ")))
	      (else       (conc " AND ( " states-qry " AND " statuses-qry " ) "))))
	   (states-qry  
	    (case mode
	      ((dashboard) (conc " AND " (if not-in "NOT " "") " state IN ('" (string-intersperse states    "','") "') ")) ;; interim-qry)
	      (else        (conc " AND " states-qry))))
	   (statuses-qry 
	    (case mode
	      ((dashboard) (conc " AND " (if not-in "NOT " "") " status IN ('" (string-intersperse statuses "','") "') ")) ;; interim-qry)
	      (else        (conc " AND " statuses-qry))))
	   (else "")))
	 (tests-match-qry (tests:match->sqlqry testpatt))
	 (qry             (conc "SELECT " qryvalstr
				(if run-id
				    " FROM tests WHERE run_id=? "
				    " FROM tests WHERE ? > 0 ") ;; should work?
				(if last-update " " " AND state != 'DELETED' ") ;; if using last-update we want deleted tests?
				states-statuses-qry
				(if tests-match-qry (conc " AND (" tests-match-qry ") ") "")
				(if last-update (conc " AND last_update >= " last-update " ") "")
				(case sort-by
				  ((rundir)      " ORDER BY length(rundir) ")
				  ((testname)    (conc " ORDER BY testname " (if sort-order (conc sort-order ",") "") " item_path "))
				  ((statestatus) (conc " ORDER BY state " (if  sort-order (conc sort-order ",") "") " status "))
				  ((event_time)  " ORDER BY event_time ")
				  (else          (if (string? sort-by)
						     (conc " ORDER BY " sort-by " ")
						     " ")))
				(if sort-order sort-order " ")
				(if limit  (conc " LIMIT " limit)   " ")
				(if offset (conc " OFFSET " offset) " ")
				";"
				)))
    (debug:print-info 8 *default-log-port* "db:get-tests-for-run run-id=" run-id ", qry=" qry)
    (let* ((res (db:with-db dbstruct run-id #f
			    (lambda (db)
			      ;; (let* ((stmth (db:get-cache-stmth dbstruct db qry))) ;; due to use of last-update we can't efficiently cache this query
				(reverse
				 (sqlite3:fold-row
				  (lambda (res . row)
				    ;; id run-id testname state status event-time host cpuload
				    ;;     diskfree uname rundir item-path run-duration final-logf comment)
				    (cons (list->vector row) res))
				  '()
				  db qry ;; stmth
				  (or run-id 1) ;; 1 > 0 , for the case where we are seeking tests matching criteral for all runs
				  ))))))
      (case qryvals
	((shortlist)(map db:test-short-record->norm res))
	((#f)       res)
	(else       res)))))

(define (db:test-short-record->norm inrec)
  ;;  "id,run_id,testname,item_path,state,status"
  ;;  "id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment
  (vector (vector-ref inrec 0) ;; id
	  (vector-ref inrec 1) ;; run_id
	  (vector-ref inrec 2) ;; testname
	  (vector-ref inrec 4) ;; state
	  (vector-ref inrec 5) ;; status
	  -1 "" -1 -1 "" "-" 
	  (vector-ref inrec 3) ;; item-path
	  -1 "-" "-"))

;;
;; 1. cache tests-match-qry
;; 2. compile qry and store in hash
;; 3. convert for-each-row to fold
;;
(define (db:get-tests-for-run-state-status dbstruct run-id testpatt)
  (db:with-db
   dbstruct run-id #f
   (lambda (db)
     (let* ((res            '())
	    (stmt-cache      (dbr:dbstruct-stmt-cache dbstruct))
	    (stmth           (let* ((sh (db:hoh-get stmt-cache db testpatt)))
			       (or sh
				   (let* ((tests-match-qry (tests:match->sqlqry testpatt))
					  (qry             (conc "SELECT id,testname,item_path,state,status FROM tests WHERE run_id=? " 
								 (if tests-match-qry (conc " AND (" tests-match-qry ") ") "")))
					  (newsh           (sqlite3:prepare db qry)))
				     (debug:print-info 8 *default-log-port* "db:get-tests-for-run qry=" qry)
				     (db:hoh-set! stmt-cache db testpatt newsh)
				     newsh)))))
       (reverse
	(sqlite3:fold-row
	 (lambda (res id testname item-path state status)
	   ;;  id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment
	   (cons (vector id run-id testname state status -1         ""     -1      -1       ""    "-"  item-path -1           "-"         "-") res))
	 '()
	 stmth
	 run-id))))))

(define (db:get-tests-for-run-state-status dbstruct run-id testpatt #!optional (last-update 0))
  (let* ((res            '())
	 (tests-match-qry (tests:match->sqlqry testpatt))
	 (qry             (conc "SELECT id,testname,item_path,state,status,event_time,run_duration FROM tests WHERE run_id=? " 
				" AND last_update > ? "
				(if tests-match-qry (conc " AND (" tests-match-qry ") ") "")
				)))
    (debug:print-info 8 *default-log-port* "db:get-tests-for-run qry=" qry)
    (db:with-db dbstruct run-id #f
		(lambda (db)
		  (sqlite3:fold-row
		   (lambda (res id testname item-path state status event-time run-duration)
		     ;;            id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment
		     (cons (vector id run-id testname state status event-time  ""     -1      -1       ""    "-"  item-path run-duration  "-"         "-") res))
		   '()
		   db 
		   qry
		   run-id
		   (or last-update 0))))))

(define (db:get-testinfo-state-status dbstruct run-id test-id)
  (let ((res            #f))
    (db:with-db dbstruct run-id #f
		(lambda (db)
		  (sqlite3:for-each-row
		   (lambda (run-id testname item-path state status)
		     ;; id,run_id,testname,state,status,event_time,host,cpuload,diskfree,uname,rundir,item_path,run_duration,final_logf,comment
		     (set! res (vector test-id run-id testname state status -1 "" -1 -1 "" "-" item-path -1 "-" "-")))
		   db 
		   "SELECT run_id,testname,item_path,state,status FROM tests WHERE id=?;" 
		   test-id)))
    res))

;; get a useful subset of the tests data (used in dashboard
;; use db:mintest-get-{id ,run_id,testname ...}
;;
(define (db:get-tests-for-run-mindata dbstruct run-id testpatt states statuses not-in)
  (db:get-tests-for-run dbstruct run-id testpatt states statuses #f #f not-in #f #f "id,run_id,testname,state,status,event_time,item_path" 0 #f))

;; do not use.
;;
(define (db:get-tests-for-runs dbstruct run-ids testpatt states statuses #!key (not-in #f)(qryvals #f))
  ;; (db:delay-if-busy)
  (let ((res '()))
    (for-each 
     (lambda (run-id)
       (set! res (append 
		  res 
		  (db:get-tests-for-run dbstruct run-id testpatt states statuses #f #f not-in #f #f qryvals #f 'normal))))
     (if run-ids
	 run-ids
	 (db:get-all-run-ids dbstruct)))
    res))

;; Convert calling routines to get list of run-ids and loop, do not use the get-tests-for-runs
;;

(define (db:delete-test-records dbstruct run-id test-id)
  (db:general-call dbstruct 'delete-test-step-records (list test-id))
  (db:general-call dbstruct 'delete-test-data-records (list test-id))
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (sqlite3:execute db "UPDATE tests SET state='DELETED',status='n/a',comment='' WHERE id=?;" test-id))))

;; 
(define (db:delete-old-deleted-test-records dbstruct)
  (let ((targtime (- (current-seconds)
		     (or (configf:lookup-number *configdat* "setup" "keep-deleted-records")
			 (* 30 24 60 60))))) ;; one month in the past
    (db:with-db
     dbstruct
     0
     #t
     (lambda (db)
       (sqlite3:with-transaction
	db
	(lambda ()
	  (sqlite3:execute db "DELETE FROM test_steps WHERE test_id IN (SELECT id FROM tests WHERE state='DELETED' AND event_time<?);" targtime)
	  (sqlite3:execute db "DELETE FROM test_data WHERE test_id IN (SELECT id FROM tests WHERE state='DELETED' AND event_time<?);" targtime)
	  (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. NB// See new but not yet used "faster" version below
;;
;;  AND NOT (item_path='' AND testname in (SELECT DISTINCT testname FROM tests WHERE testname=? AND item_path != ''));")))
;;  (debug:print 0 *default-log-port* "QRY: " qry)
;;  (db:delay-if-busy)
;;
;; NB// This call only operates on toplevel tests. Consider replacing it with more general call
;;
(define (db:set-tests-state-status dbstruct run-id testnames currstate currstatus newstate newstatus)
  (let ((test-ids '()))
    (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 LIKE ?;"))
	     (test-id (db:get-test-id dbstruct run-id testname "")))
	 (db:with-db
	  dbstruct
	  run-id
	  #t
	  (lambda (db)
	    (sqlite3:execute db qry
			     (or newstate  currstate "NOT_STARTED")
			     (or newstatus currstate "UNKNOWN")
			     run-id testname)))
	 (if test-id
	     (begin
	       (set! test-ids (cons test-id test-ids))
	       (mt:process-triggers dbstruct run-id test-id newstate newstatus)))))
     testnames)
    test-ids))

;; ;; speed up for common cases with a little logic
;; ;; NB// Ultimately this will be deprecated in deference to mt:test-set-state-status-by-id
;;
;;      NOTE: run-id is not used
;; ;;
(define (db:test-set-state-status dbstruct run-id test-id newstate newstatus newcomment)
  (db:with-db
   dbstruct
   ;; run-id
   #f
   #t
   (lambda (db)
     (cond
      ((and newstate newstatus newcomment)
       (sqlite3:execute db "UPDATE tests SET state=?,status=?,comment=? WHERE id=?;" newstate newstatus newcomment ;; (sdb:qry 'getid newcomment)
			test-id))
      ((and newstate newstatus)
       (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 ;; (sdb:qry 'getid newcomment)
				       test-id))))))
  (mt:process-triggers dbstruct run-id test-id newstate newstatus))

;; NEW BEHAVIOR: Count tests running in all runs!
;;
(define (db:get-count-tests-running dbstruct run-id) ;; fastmode)
  (let* ((qry ;; (if fastmode
		;;   "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND NOT (uname = 'n/a' AND item_path = '') LIMIT 1;"
		  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND NOT (uname = 'n/a' AND item_path = '');")) ;; )
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let* ((stmth (db:get-cache-stmth dbstruct  db qry)))
       (sqlite3:first-result stmth))))))

;; NEW BEHAVIOR: Count tests running in only one run!
;;
(define (db:get-count-tests-actually-running dbstruct run-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (sqlite3:first-result
      db
      ;; WARNING BUG EDIT ME - merged from v1.55 - not sure what is right here ...
      ;; "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id NOT IN (SELECT id FROM runs WHERE state='deleted') AND NOT (uname = 'n/a' AND item_path = '');")
      "SELECT count(id) FROM tests WHERE state in ('RUNNING','REMOTEHOSTSTART','LAUNCHED') AND run_id=?;" 
      run-id)))) ;; NOT IN (SELECT id FROM runs WHERE state='deleted');")

;; NEW BEHAVIOR: Look only at single run with run-id
;; 
;; (define (db:get-running-stats dbstruct run-id)
(define (db:get-count-tests-running-for-run-id dbstruct run-id) ;; fastmode)
  (let* ((qry ;; (if fastmode
		 ;;  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=? LIMIT 1;"
		  "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=?;")) ;; )
    (db:with-db
     dbstruct
     run-id
     #f
     (lambda (db)
       (let* ((stmth (db:get-cache-stmth dbstruct db qry)))
	 (sqlite3:first-result stmth run-id))))))

;; For a given testname how many items are running? Used to determine
;; probability for regenerating html
;;
(define (db:get-count-tests-running-for-testname dbstruct run-id testname)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let* ((stmt "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND run_id=? AND NOT (uname = 'n/a' AND item_path = '') AND testname=?;")
	    (stmth (db:get-cache-stmth dbstruct db stmt)))
       (sqlite3:first-result
	stmth run-id testname)))))

(define (db:get-not-completed-cnt dbstruct run-id)
(db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
      ;(print "SELECT count(id) FROM tests WHERE state not in ('COMPLETED', 'DELETED') AND run_id=" run-id)  
     (sqlite3:first-result
      db
      "SELECT count(id) FROM tests WHERE state not in ('COMPLETED', 'DELETED') AND run_id=?;" run-id))))

(define (db:get-count-tests-running-in-jobgroup dbstruct run-id jobgroup)
  (if (not jobgroup)
      0 ;; 
      (let ((testnames '()))
	;; get the testnames
	(db:with-db
	 dbstruct #f #f
	 (lambda (db)
	   (sqlite3:for-each-row
	    (lambda (testname)
	      (set! testnames (cons testname testnames)))
	    db
	    "SELECT testname FROM test_meta WHERE jobgroup=?"
	    jobgroup)))
	;; get the jobcount NB// EXTEND THIS TO OPPERATE OVER ALL RUNS?
	(if (not (null? testnames))
	    (db:with-db
	     dbstruct
	     run-id
	     #f
	     (lambda (db)
	       (sqlite3:first-result
		db
		(conc "SELECT count(id) FROM tests WHERE state in ('RUNNING','LAUNCHED','REMOTEHOSTSTART') AND testname in ('"
		      (string-intersperse testnames "','")
		      "') AND NOT (uname = 'n/a' AND item_path='');")) ;; should this include the (uname = 'n/a' ...) ???
	       ))
	    0))))

;; tags: '("tag%" "tag2" "%ag6")
;;

;; done with run when:
;;   0 tests in LAUNCHED, NOT_STARTED, REMOTEHOSTSTART, RUNNING
(define (db:estimated-tests-remaining dbstruct run-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (sqlite3:first-result
      db
      "SELECT count(id) FROM tests WHERE state in ('LAUNCHED','NOT_STARTED','REMOTEHOSTSTART','RUNNING','KILLREQ') AND run_id=?;")
     run-id)))

;; map run-id, testname item-path to test-id
(define (db:get-test-id dbstruct run-id testname item-path)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (db:first-result-default
      db
      "SELECT id FROM tests WHERE testname=? AND item_path=? AND run_id=?;"
      #f ;; the default
      testname item-path run-id))))

;; overload the unused attemptnum field for the process id of the runscript or 
;; ezsteps step script in progress
;;
(define (db:test-set-top-process-pid dbstruct run-id test-id pid)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (sqlite3:execute db "UPDATE tests SET attemptnum=? WHERE id=?;"
		      pid test-id))))

(define (db:test-get-top-process-pid dbstruct run-id test-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (db:first-result-default
      db
      "SELECT attemptnum FROM tests WHERE id=?;"
      #f
      test-id))))

(define db:test-record-fields '("id"           "run_id"        "testname"  "state"      "status"      "event_time"
				"host"         "cpuload"       "diskfree"  "uname"      "rundir"      "item_path"
                                "run_duration" "final_logf"    "comment"   "shortdir"   "attemptnum"  "archived" "last_update"))

;; fields *must* be a non-empty list
;;
(define (db:field->number fieldname fields)
  (if (null? fields)
      #f
      (let loop ((hed  (car fields))
		 (tal  (cdr fields))
		 (indx 0))
	(if (equal? fieldname hed)
	    indx
	    (if (null? tal)
		#f
		(loop (car tal)(cdr tal)(+ indx 1)))))))

(define db:test-record-qry-selector (string-intersperse db:test-record-fields ","))

(define (db:update-tesdata-on-repilcate-db dbstruct old-lt new-lt)
  (db:with-db
   dbstruct   #f   #f
   (lambda (db)
     (sqlite3:execute db "UPDATE tests SET rundir= replace(rundir,?,?), shortdir=replace(shortdir,?,?);"
		      old-lt new-lt  old-lt new-lt))))

;; NOTE: Use db:test-get* to access records
;; NOTE: This needs rundir decoding? Decide, decode here or where used? For the moment decode where used.
(define (db:get-all-tests-info-by-run-id dbstruct run-id)
  (let* ((res '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (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 shortdir attemptnum archived)
	  ;;                 0    1       2      3      4        5       6      7        8     9     10      11          12          13       14     15        16
	  (set! res (cons (vector id run-id testname state status event-time host cpuload diskfree uname rundir item-path run-duration final-logf comment shortdir attemptnum archived)
			  res)))
	db
	(conc "SELECT " db:test-record-qry-selector " FROM tests WHERE state != 'DELETED' AND run_id=?;")
	run-id)))
    res))

(define (db:replace-test-records dbstruct run-id testrecs)
  (db:with-db dbstruct run-id #t 
	      (lambda (db)
		(let* ((qmarks (string-intersperse (make-list (length db:test-record-fields) "?") ","))
		       (qrystr (conc "INSERT OR REPLACE INTO tests (" db:test-record-qry-selector ") VALUES (" qmarks ") WHERE run_id=?;"))
		       (qry    (sqlite3:prepare db qrystr)))
		  (debug:print 0 *default-log-port* "INFO: migrating test records for run with id " run-id)
		  (sqlite3:with-transaction
		   db
		   (lambda ()
		     (for-each 
		      (lambda (rec)
			;; (debug:print 0 *default-log-port* "INFO: Inserting values: " (string-intersperse (map conc (vector->list rec)) ",") "\n")
			(apply sqlite3:execute qry (append (vector->list rec)(list run-id))))
		      testrecs)))
		  (sqlite3:finalize! qry)))))

;; map a test-id into the proper range
;;
(define (db:adj-test-id mtdb min-test-id test-id)
  (if (>= test-id min-test-id)
      test-id
      (let loop ((new-id min-test-id))
	(let ((test-id-found #f))
	  (sqlite3:for-each-row 
	   (lambda (id)
	     (set! test-id-found id))
	   (db:dbdat-get-db mtdb)
	   "SELECT id FROM tests WHERE id=?;"
	   new-id)
	  ;; if test-id-found then need to try again
	  (if test-id-found
	      (loop (+ new-id 1))
	      (begin
		(debug:print-info 0 *default-log-port* "New test id " new-id " selected for test with id " test-id)
		(sqlite3:execute mtdb "UPDATE tests SET id=? WHERE id=?;" new-id test-id)))))))

;; move test ids into the 30k * run_id range
;;
(define (db:prep-megatest.db-adj-test-ids mtdb run-id testrecs)
  (debug:print-info 0 *default-log-port* "Adjusting test ids in megatest.db for run " run-id)
  (let ((min-test-id (* run-id 30000)))
    (for-each 
     (lambda (testrec)
       (let* ((test-id (vector-ref testrec (db:field->number "id" db:test-record-fields))))
	 (db:adj-test-id (db:dbdat-get-db mtdb) min-test-id test-id)))
     testrecs)))
	
;; 1. move test ids into the 30k * run_id range
;; 2. move step ids into the 30k * run_id range
;;
(define (db:prep-megatest.db-for-migration mtdb)
  (let* ((run-ids (db:get-all-run-ids mtdb)))
    (for-each 
     (lambda (run-id)
       (let ((testrecs (db:get-all-tests-info-by-run-id mtdb run-id)))
	 (db:prep-megatest.db-adj-test-ids (db:dbdat-get-db mtdb) run-id testrecs)))
     run-ids)))

;; Get test data using test_id, run-id is not used
;; 
(define (db:get-test-info-by-id dbstruct run-id test-id)
  (db:with-db
   dbstruct
   #f ;; run-id
   #f
   (lambda (db)
     (let ((res #f))
       (sqlite3:for-each-row ;; attemptnum added to hold pid of top process (not Megatest) controlling a test
	(lambda (id run-id testname state status event-time host cpuload diskfree uname rundir-id item-path run_duration final-logf-id comment short-dir-id attemptnum archived last-update)
	  ;;                0    1       2      3      4        5       6      7        8     9     10      11          12          13           14         15          16
	  (set! res (vector id run-id testname state status event-time host cpuload diskfree uname rundir-id item-path run_duration final-logf-id comment short-dir-id attemptnum archived last-update)))
	db
	(conc "SELECT " db:test-record-qry-selector " FROM tests WHERE id=?;")
	test-id)
       res))))

;; Use db:test-get* to access
;; Get test data using test_ids. NB// Only works within a single run!!
;;
(define (db:get-test-info-by-ids dbstruct run-id test-ids)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let ((res '()))
       (sqlite3:for-each-row
	(lambda (a . b)
	  ;;                 0    1       2      3      4        5       6      7        8     9     10      11          12          13       14
	  (set! res (cons (apply vector a b) res)))
	db
	(conc "SELECT " db:test-record-qry-selector " FROM tests WHERE id in ("
	      (string-intersperse (map conc test-ids) ",") ");"))
       res))))

(define (db:get-test-info dbstruct run-id test-name item-path)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let ((res #f))
       (sqlite3:for-each-row
	(lambda (a . b)
	  (set! res (apply vector a b)))
	db
	(conc "SELECT " db:test-record-qry-selector " FROM tests WHERE testname=? AND item_path=? AND run_id=?;")
	test-name item-path run-id)
       res))))

(define (db:test-get-rundir-from-test-id dbstruct run-id test-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (db:first-result-default
      db
      "SELECT rundir FROM tests WHERE id=?;"
      #f ;; default result
      test-id))))

(define (db:get-test-times dbstruct run-name target)
  (let ((res `())
        (qry 	(conc "select testname, item_path, run_duration, " (string-join (db:get-keys dbstruct) " || '/' || ") " as target from tests inner join runs on tests.run_id = runs.id where runs.runname = ? and target = ?  ;")))
   
  (db:with-db 
    dbstruct
    #f ;; this is for the main runs db
    #f ;; does not modify db
    (lambda (db)
            (sqlite3:for-each-row
	(lambda (test-name item-path test-time target )
	  (set! res (cons (vector test-name item-path test-time) res)))
	db
        qry 
	run-name target)
       res))))

(define (db:get-test-times dbstruct run-name target)
  (let ((res `())
        (qry 	(conc "select testname, item_path, run_duration, " (string-join (db:get-keys dbstruct) " || '/' || ") " as target from tests inner join runs on tests.run_id = runs.id where runs.runname = ? and target = ?  ;")))
   
  (db:with-db 
    dbstruct
    #f ;; this is for the main runs db
    #f ;; does not modify db
    (lambda (db)
            (sqlite3:for-each-row
	(lambda (test-name item-path test-time target )
	  (set! res (cons (vector test-name item-path test-time) res)))
	db
        qry 
	run-name target)
       res))))

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

(define (db:teststep-set-status! dbstruct run-id test-id teststep-name state-in status-in comment logfile)
  (db:with-db
   dbstruct
   run-id
   #t
   (lambda (db)
     (sqlite3:execute 
      db
      "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 "")))))



(define (db:delete-steps-for-test! dbstruct run-id test-id)
  ;; TODO: figure out why status is the key field rather than state (note:  CONSTRAINT test_steps_constraint UNIQUE (test_id,stepname,state) )
  (db:with-db
   dbstruct
   run-id
   #t
   (lambda (db)
     (sqlite3:execute 
      db
      "UPDATE test_steps set status='DELETED' where test_id=?" ;;  and run_id=? !! - run_id not in table (bummer) TODO: get run_id into schema for test_steps
      test-id))))


;; db-get-test-steps-for-run
(define (db:get-steps-for-test dbstruct run-id test-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let* ((res '()))
       (sqlite3:for-each-row 
	(lambda (id test-id stepname state status event-time logfile comment)
	  (set! res (cons (vector id test-id stepname state status event-time (if (string? logfile) logfile "") comment) res)))
	db
	"SELECT id,test_id,stepname,state,status,event_time,logfile,comment FROM test_steps WHERE status != 'DELETED' AND test_id=? ORDER BY id ASC;" ;; event_time DESC,id ASC;
	test-id)
       (reverse res)))))

 (define (db:get-steps-info-by-id dbstruct  test-step-id)
   (db:with-db
    dbstruct
    #f 
    #f
    (lambda (db)
      (let* ((res (vector #f #f #f #f #f #f #f #f #f)))
        (sqlite3:for-each-row 
       (lambda (id test-id stepname state status event-time logfile comment last-update)
         (set! res (vector id test-id stepname state status event-time (if (string? logfile) logfile "") comment last-update)))
       db
       "SELECT id,test_id,stepname,state,status,event_time,logfile,comment,last_update FROM test_steps WHERE id=? ORDER BY id ASC;" ;; event_time DESC,id ASC;
       test-step-id)
        res))))

(define (db:get-steps-data dbstruct run-id test-id)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let ((res '()))
       (sqlite3:for-each-row 
	(lambda (id test-id stepname state status event-time logfile)
	  (set! res (cons (vector id test-id stepname state status event-time (if (string? logfile) logfile "")) res)))
	db
	"SELECT id,test_id,stepname,state,status,event_time,logfile FROM test_steps WHERE status != 'DELETED' AND test_id=? ORDER BY id ASC;" ;; event_time DESC,id ASC;
	test-id)
       (reverse res)))))

;;======================================================================
;; T E S T  D A T A 
;;======================================================================

(define (db:get-data-info-by-id dbstruct  test-data-id)
  (let* ((stmt        "SELECT id,test_id, category, variable, value, expected, tol, units, comment, status, type, last_update FROM test_data WHERE id=? ORDER BY id ASC;")) ;; event_time DESC,id ASC;
    (db:with-db
     dbstruct
     #f 
     #f
     (lambda (db)
       (let* ((stmth (db:get-cache-stmth dbstruct db stmt))
	      (res   (sqlite3:fold-row
		      (lambda (res id test-id  category variable value expected tol units comment status type last-update)
			(vector id test-id  category variable value expected tol units comment status type last-update))
		      (vector #f #f #f #f #f #f #f #f #f #f #f #f)
		      stmth
		      test-data-id)))
        res)))))

;; WARNING: Do NOT call this for the parent test on an iterated test
;; Roll up test_data pass/fail results
;; look at the test_data status field, 
;;    if all are pass (any case) and the test status is PASS or NULL or '' then set test status to PASS.
;;    if one or more are fail (any case) then set test status to PASS, non "pass" or "fail" are ignored
(define (db:test-data-rollup dbstruct run-id test-id status)
  (let* ((fail-count 0)
	 (pass-count 0))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row
	(lambda (fcount pcount)
	  (set! fail-count fcount)
	  (set! pass-count pcount))
	db 
	"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)
       ;; Now rollup the counts to the central megatest.db
       (db:general-call dbstruct 'pass-fail-counts (list pass-count fail-count test-id))
       ;; if the test is not FAIL then set status based on the fail and pass counts.
       (db:general-call dbstruct 'test_data-pf-rollup (list test-id test-id test-id test-id))))))

;; each section is a rule except "final" which is the final result
;;
;; [rule-5]
;; operator in
;; section LogFileBody
;; desc Output voltage
;; status OK
;; expected 1.9
;; measured 1.8
;; type +/-
;; tolerance 0.1
;; pass 1
;; fail 0
;; 
;; [final]
;; exit-code 6
;; exit-status SKIP
;; message If flagged we are asking for this to exit with code 6
;;
;; recorded in steps table:
;;   category: stepname
;;   variable: rule-N
;;   value:    measured
;;   expected: expected
;;   tol:      tolerance
;;   units:    -
;;   comment:  desc or message
;;   status:   status
;;   type:     type
;; 
(define (db:logpro-dat->csv dat stepname)
  (let ((res '()))
    (for-each
     (lambda (entry-name)
       (if (equal? entry-name "final")
	   (set! res (append 
		      res
		      (list
		       (list stepname
			     entry-name
			     (configf:lookup dat entry-name "exit-code")    ;; 0 ;; Value
			     0                                              ;; 1 ;; Expected
			     0                                              ;; 2 ;; Tolerance
			     "n/a"					    ;; 3 ;; Units
			     (configf:lookup dat entry-name "message")      ;; 4 ;; Comment
			     (configf:lookup dat entry-name "exit-status")  ;; 5 ;; Status
			     "logpro"                                       ;; 6 ;; Type
			     ))))
	   (let* ((value     (or (configf:lookup dat entry-name "measured")  "n/a"))
		  (expected  (or (configf:lookup dat entry-name "expected")  0.0))
		  (tolerance (or (configf:lookup dat entry-name "tolerance") 0.0))
		  (comment   (or (configf:lookup dat entry-name "comment")
				 (configf:lookup dat entry-name "desc")      "n/a"))
		  (status    (or (configf:lookup dat entry-name "status")    "n/a"))
		  (type      (or (configf:lookup dat entry-name "expected")  "n/a")))
	     (set! res (append
			res  
			(list (list stepname
				    entry-name 
				    value        ;; 0
				    expected     ;; 1
				    tolerance    ;; 2
				    "n/a"        ;; 3 Units
				    comment      ;; 4
				    status       ;; 5
				    type         ;; 6
				    )))))))
     (hash-table-keys dat))
    res))

;; $MT_MEGATEST -load-test-data << EOF
;; foo,bar,   1.2,  1.9, >
;; foo,rab, 1.0e9, 10e9, 1e9
;; foo,bla,   1.2,  1.9, <
;; foo,bal,   1.2,  1.2, <   ,     ,Check for overload
;; foo,alb,   1.2,  1.2, <=  , Amps,This is the high power circuit test
;; foo,abl,   1.2,  1.3, 0.1
;; foo,bra,   1.2, pass, silly stuff
;; faz,bar,    10,  8mA,     ,     ,"this is a comment"
;; EOF

(define (db:csv->test-data dbstruct run-id test-id csvdata)
  (debug:print 4 *default-log-port* "test-id " test-id ", csvdata: " csvdata)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (let* ((csvlist (csv->list (make-csv-reader
				 (open-input-string csvdata)
				 '((strip-leading-whitespace? #t)
				   (strip-trailing-whitespace? #t)))))) ;; (csv->list csvdata)))
       (for-each
	(lambda (csvrow)
	  (let* ((padded-row  (take (append csvrow (list #f #f #f #f #f #f #f #f #f)) 9))
		 (category    (list-ref padded-row 0))
		 (variable    (list-ref padded-row 1))
		 (value       (any->number-if-possible (list-ref padded-row 2)))
		 (expected    (any->number-if-possible (list-ref padded-row 3)))
		 (tol         (any->number-if-possible (list-ref padded-row 4))) ;; >, <, >=, <=, or a number
		 (units       (list-ref padded-row 5))
		 (comment     (list-ref padded-row 6))
		 (status      (let ((s (list-ref padded-row 7)))
				(if (and (string? s)(or (string-match (regexp "^\\s*$") s)
							(string-match (regexp "^n/a$") s)))
				    #f
				    s))) ;; if specified on the input then use, else calculate
		 (type        (list-ref padded-row 8)))
	    ;; look up expected,tol,units from previous best fit test if they are all either #f or ''
	    (debug:print 4 *default-log-port* "BEFORE: category: " category " variable: " variable " value: " value 
			 ", expected: " expected " tol: " tol " units: " units " status: " status " comment: " comment " type: " type)
	    
	    (if (and (or (not expected)(equal? expected ""))
		     (or (not tol)     (equal? expected ""))
		     (or (not units)   (equal? expected "")))
		(let-values (((new-expected new-tol new-units)(tdb:get-prev-tol-for-test #f test-id category variable)))
		  (set! expected new-expected)
		  (set! tol      new-tol)
		  (set! units    new-units)))
	    
	    (debug:print 4 *default-log-port* "AFTER:  category: " category " variable: " variable " value: " value 
			 ", expected: " expected " tol: " tol " units: " units " status: " status " comment: " comment)
	    ;; calculate status if NOT specified
	    (if (and (not status)(number? expected)(number? value)) ;; need expected and value to be numbers
		(if (number? tol) ;; if tol is a number then we do the standard comparison
		    (let* ((max-val (+ expected tol))
			   (min-val (- expected tol))
			   (result  (and (>=  value min-val)(<= value max-val))))
		      (debug:print 4 *default-log-port* "max-val: " max-val " min-val: " min-val " result: " result)
		      (set! status (if result "pass" "fail")))
		    (set! status ;; NB// need to assess each one (i.e. not return operator since need to act if not valid op.
		      (case (string->symbol tol) ;; tol should be >, <, >=, <=
			((>)  (if (>  value expected) "pass" "fail"))
			((<)  (if (<  value expected) "pass" "fail"))
			((>=) (if (>= value expected) "pass" "fail"))
			((<=) (if (<= value expected) "pass" "fail"))
			(else (conc "ERROR: bad tol comparator " tol))))))
	    (debug:print 4 *default-log-port* "AFTER2: category: " category " variable: " variable " value: " value 
			 ", expected: " expected " tol: " tol " units: " units " status: " status " comment: " comment)
	    ;; (db:delay-if-busy dbdat)
	    (sqlite3:execute db "INSERT OR REPLACE INTO test_data (test_id,category,variable,value,expected,tol,units,comment,status,type) VALUES (?,?,?,?,?,?,?,?,?,?);"
			     test-id category variable value expected tol units (if comment comment "") status type)))
	csvlist)))))

;; This routine moved from tdb.scm, tdb:read-test-data
;;
(define (db:read-test-data dbstruct run-id test-id categorypatt)
  (let* ((res '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (id test_id category variable value expected tol units comment status type)
	  (set! res (cons (vector id test_id category variable value expected tol units comment status type) res)))
	db
	"SELECT id,test_id,category,variable,value,expected,tol,units,comment,status,type FROM test_data WHERE test_id=? AND category LIKE ? ORDER BY category,variable;" test-id categorypatt)
       (reverse res)))))

;; This routine moved from tdb.scm, :read-test-data
;;
(define (db:read-test-data* dbstruct run-id test-id categorypatt varpatt)
  (let* ((res '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (id test_id category variable value expected tol units comment status type)
	  (set! res (cons (vector id test_id category variable value expected tol units comment status type) res)))
	db
	"SELECT id,test_id,category,variable,value,expected,tol,units,comment,status,type FROM test_data WHERE test_id=? AND category LIKE ? AND variable LIKE ? ORDER BY category,variable;" test-id categorypatt varpatt)
       (reverse res)))))


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

(define (db:get-run-ids-matching-target dbstruct keynames target res runname testpatt statepatt statuspatt)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (let* ((row-ids '())
	    (keystr (string-intersperse 
		     (map (lambda (key val)
			    (conc key " like '" val "'"))
			  keynames 
			  (string-split target "/"))
		     " AND "))
	    ;; (testqry (tests:match->sqlqry testpatt))
	    (runsqry (sqlite3:prepare db (conc "SELECT id FROM runs WHERE " keystr " AND runname LIKE '" runname "';"))))
       ;; (debug:print 8 *default-log-port* "db:test-get-paths-matching-keynames-target-new\n  runsqry=" runsqry "\n  tstsqry=" testqry)
       (sqlite3:for-each-row
	(lambda (rid)
	  (set! row-ids (cons rid row-ids)))
	runsqry)
       (sqlite3:finalize! runsqry)
       row-ids))))

;; finds latest matching all patts for given run-id
;;
(define (db:test-get-paths-matching-keynames-target-new dbstruct run-id keynames target res testpatt statepatt statuspatt runname)
  (let* ((testqry (tests:match->sqlqry testpatt))
	 (tstsqry (conc "SELECT rundir FROM tests WHERE run_id=? AND " testqry " AND state LIKE '" statepatt "' AND status LIKE '" statuspatt "' ORDER BY event_time ASC;")))
    (db:with-db
     dbstruct
     run-id
     #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (p)
	  (set! res (cons p res)))
	db
	tstsqry
	run-id)
       res))))

(define (db:test-toplevel-num-items dbstruct run-id testname)
  (db:with-db
   dbstruct
   run-id
   #f
   (lambda (db)
     (let ((res 0))
       (sqlite3:for-each-row
	(lambda (num-items)
	  (set! res num-items))
	db
	"SELECT count(id) FROM tests WHERE run_id=? AND testname=? AND item_path != '' AND state NOT IN ('DELETED');"
	run-id
	testname)
       res))))

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

;; NOTE: Can remove the regex and base64 encoding for zmq
(define (db:obj->string obj #!key (transport 'http))
  (case transport
    ;; ((fs) obj)
    ((http fs)
     (string-substitute
      (regexp "=") "_"
      (base64:base64-encode 
       (z3:encode-buffer
	(with-output-to-string
	  (lambda ()(serialize obj))))) ;; BB: serialize - this is what causes problems between different builds of megatest communicating.  serialize is sensitive to binary image of mtest.
      #t))
    ((zmq nmsg)(with-output-to-string (lambda ()(serialize obj))))
    (else obj))) ;; rpc

(define (db:string->obj msg #!key (transport 'http))
  (case transport
    ;; ((fs) msg)
    ((http fs)
     (if (string? msg)
	 (with-input-from-string 
	     (z3:decode-buffer
	      (base64:base64-decode
	       (string-substitute 
		(regexp "_") "=" msg #t)))
	   (lambda ()(deserialize)))
	 (begin
	   (debug:print-error 0 *default-log-port* "reception failed. Received \"" msg "\" but cannot translate it.")
           (print-call-chain (current-error-port))
	   msg))) ;; crude reply for when things go awry
    ((zmq nmsg)(with-input-from-string msg (lambda ()(deserialize))))
    (else msg))) ;; rpc

;; ; This is to be the big daddy call NOPE: Replaced by db:set-state-status-and-roll-up-items
;; ;
;; define (db:test-set-state-status dbstruct run-id test-id state status msg)
;;  (let ((dbdat  (db:get-db dbstruct run-id)))
;;    (if (member state '("LAUNCHED" "REMOTEHOSTSTART"))
;; 	(db:general-call dbdat 'set-test-start-time (list test-id)))
;;    ;; (if msg
;;    ;; 	(db:general-call dbdat 'state-status-msg (list state status msg test-id))
;;    ;; 	(db:general-call dbdat 'state-status     (list state status test-id)))
;;    (db:set-state-status-and-roll-up-items dbstruct run-id test-id #f state status msg)
;;    ;; process the test_data table
;;    (if (and test-id state status (equal? status "AUTO")) 
;; 	(db:test-data-rollup dbstruct run-id test-id status))
;;    (mt:process-triggers dbstruct run-id test-id state status)))

;; state is the priority rollup of all states
;; status is the priority rollup of all completed statesfu
;;
;; if test-name is an integer work off that instead of test-name test-path
;;
(define (db:set-state-status-and-roll-up-items dbstruct run-id test-name item-path state status comment)
  ;; establish info on incoming test followed by info on top level test
  ;; BBnote - for mode itemwait, linkage between upstream test & matching item status is propagated to run queue in db:prereqs-not-met
  (let* ((testdat      (if (number? test-name)
			   (db:get-test-info-by-id dbstruct run-id test-name) ;; test-name is actually a test-id
			   (db:get-test-info       dbstruct run-id test-name item-path)))
	 (test-id      (db:test-get-id testdat))
	 (test-name    (if (number? test-name)
			   (db:test-get-testname testdat)
			   test-name))
	 (item-path    (db:test-get-item-path testdat))
         (tl-testdat   (db:get-test-info dbstruct run-id test-name ""))
         (tl-test-id   (if tl-testdat
			   (db:test-get-id tl-testdat)
			   #f)))
    (if (member state '("LAUNCHED" "REMOTEHOSTSTART")) 
	(db:general-call dbstruct 'set-test-start-time (list test-id)))
    (mutex-lock! *db-transaction-mutex*)
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (let ((tr-res
              (sqlite3:with-transaction
               db
               (lambda ()
                 ;; NB// Pass the db so it is part fo the transaction
                 (db:test-set-state-status db run-id test-id state status comment) ;; this call sets the item state/status
                 (if (not (equal? item-path "")) ;; only roll up IF incoming test is an item
                     (let* ((state-status-counts  (db:get-all-state-status-counts-for-test dbstruct run-id test-name item-path state status)) ;; item-path is used to exclude current state/status of THIS test
			      						  (state-stauses (db:roll-up-rules state-status-counts state status))
                          (newstate (car state-stauses))
                          (newstatus (cadr state-stauses)))
                       (debug:print 4 *default-log-port* "BB> tl-test-id="tl-test-id" ; "test-name":"item-path" newstate="newstate" newstatus="newstatus" len(sscs)="(length state-status-counts)  " state-status-counts: "
							(apply conc
                  (map (lambda (x)
                     (conc
                     		(with-output-to-string (lambda () (pp (dbr:counts->alist x)))) " | "))
                              state-status-counts))); end debug:print
   
                       (if tl-test-id
			   (db:test-set-state-status db run-id tl-test-id newstate newstatus #f)) ;; we are still in the transaction - must access the db and not the dbstruct
		       ))))))
         (mutex-unlock! *db-transaction-mutex*)
         (if (and test-id state status (equal? status "AUTO")) 
             (db:test-data-rollup dbstruct run-id test-id status))
         tr-res)))))

(define (db:roll-up-rules state-status-counts state status)
		(let* ((running     (length (filter (lambda (x)
                          (member (dbr:counts-state x) *common:running-states*))
                                 state-status-counts)))
           (bad-not-started      (length (filter (lambda (x)
                                      (and (equal? (dbr:counts-state x) "NOT_STARTED") 
                                        (not (member (dbr:counts-status x)  *common:not-started-ok-statuses*))))
																	state-status-counts)))
           (all-curr-states      (common:special-sort  ;; worst -> best (sort of)
                                    (delete-duplicates
                                      (if (and state (not (member state *common:dont-roll-up-states*)))
                                          (cons state (map dbr:counts-state state-status-counts))
                                          (map dbr:counts-state state-status-counts)))
                                                  *common:std-states* >))
           (all-curr-statuses    (common:special-sort  ;; worst -> best
                                    (delete-duplicates
                                      (if (and state status (not (member state *common:dont-roll-up-states*)))
                                          (cons status (map dbr:counts-status state-status-counts))
                                          (map dbr:counts-status state-status-counts)))
                                                   *common:std-statuses* >))
           (non-completes        (filter (lambda (x)
							 										 (not (member x (cons "COMPLETED" *common:dont-roll-up-states*))))
						       									all-curr-states))
			     (preq-fails        (filter (lambda (x)
							 								(equal? x "PREQ_FAIL"))
						       							all-curr-statuses))
           (num-non-completes (length non-completes))
 					 (newstate          (cond
															((> running 0)           "RUNNING")            ;; anything running, call the situation running
                              ((> (length preq-fails) 0) "NOT_STARTED")
															((> bad-not-started 0)   "COMPLETED")          ;; we have an ugly situation, it is completed in the sense we cannot do more.
															((> num-non-completes 0) (car non-completes))  ;;  (remove (lambda (x)(equal? "COMPLETED" x)) all-curr-states))) ;; only rollup DELETED if all DELETED
															(else                    (car all-curr-states))))
           (newstatus         (cond
                              ((> (length preq-fails) 0)  "PREQ_FAIL")
                              ((or (> bad-not-started 0)
                                   (and (equal? newstate "NOT_STARTED")
                                      (> num-non-completes 0)))
                                            "STARTED")
                              (else (car all-curr-statuses)))))
 					(debug:print-info 2 *default-log-port*
                                         "\n--> probe db:set-state-status-and-roll-up-items: "
                                         "\n--> state-status-counts: "(map dbr:counts->alist state-status-counts)
                                         "\n--> running:             "running
                                         "\n--> bad-not-started:     "bad-not-started
                                         "\n--> non-non-completes:   "num-non-completes
                                         "\n--> non-completes:       "non-completes
                                         "\n--> all-curr-states:     "all-curr-states
                                         "\n--> all-curr-statuses:     "all-curr-statuses
                                         "\n--> newstate              "newstate
                                         "\n--> newstatus            "newstatus
                                         "\n\n")

                        ;; NB// Pass the db so it is part of the transaction
         (list newstate newstatus)))

(define (db:set-state-status-and-roll-up-run dbstruct run-id curr-state curr-status)
    (mutex-lock! *db-transaction-mutex*)
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (let ((tr-res
              (sqlite3:with-transaction
               db
               (lambda ()
                   (let* ((state-status-counts  (db:get-all-state-status-counts-for-run dbstruct run-id))
													(state-stauses (db:roll-up-rules state-status-counts #f #f ))
                          (newstate (car state-stauses))
                          (newstatus (cadr state-stauses))) 
                    (if (or (not (eq? newstate curr-state)) (not (eq?  newstatus curr-status)))
                   (db:set-run-state-status dbstruct run-id newstate newstatus )))))))
         (mutex-unlock! *db-transaction-mutex*)
         tr-res))))


(define (db:get-all-state-status-counts-for-run dbstruct run-id)
 (let* ((test-count-recs (db:with-db
                                  dbstruct #f #f
                                  (lambda (db)
                                    (sqlite3:map-row
                                     (lambda (state status count)
                                        (make-dbr:counts state: state status: status count: count))
                                     db
                                     "SELECT state,status,count(id) FROM tests WHERE run_id=?  GROUP BY state,status;"
                                     run-id )))))
   test-count-recs))


;; BBnote: db:get-all-state-status-counts-for-test returns dbr:counts object aggregating state and status of items of a given test, *not including rollup state/status*
;;
;; NOTE: This is called within a transaction
;;
(define (db:get-all-state-status-counts-for-test dbstruct run-id test-name item-path item-state-in item-status-in)
  (let* ((test-info   (db:get-test-info dbstruct run-id test-name item-path))
         (item-state  (or item-state-in (db:test-get-state test-info))) 
         (item-status (or item-status-in (db:test-get-status test-info)))
         (other-items-count-recs (db:with-db
                                  dbstruct #f #f
                                  (lambda (db)
                                    (sqlite3:map-row
                                     (lambda (state status count)
                                       (make-dbr:counts state: state status: status count: count))
                                     db
                                     ;; ignore current item because we have changed its value in the current transation so this select will see the old value.
                                     "SELECT state,status,count(id) FROM tests WHERE run_id=? AND testname=? AND item_path != '' AND item_path !=? GROUP BY state,status;"
                                     run-id test-name item-path))))

         ;; add current item to tally outside of sql query
         (match-countrec-lambda (lambda (countrec) 
                                  (and (equal? (dbr:counts-state  countrec) item-state)
                                       (equal? (dbr:counts-status countrec) item-status))))

         (already-have-count-rec-list
          (filter match-countrec-lambda other-items-count-recs)) ;; will have either 0 or 1 count recs depending if another item shares this item's state/status
         
         (updated-count-rec    (if (null? already-have-count-rec-list)
                                   (make-dbr:counts state: item-state status: item-status count: 1)
                                   (let* ((our-count-rec (car already-have-count-rec-list))
                                          (new-count (add1 (dbr:counts-count our-count-rec))))
                                     (make-dbr:counts state: item-state status: item-status count: new-count))))

         (nonmatch-countrec-lambda (lambda (countrec) (not (match-countrec-lambda countrec))))
         
         (unrelated-rec-list   
          (filter nonmatch-countrec-lambda other-items-count-recs)))
    
    (cons updated-count-rec unrelated-rec-list)))

;; (define (db:get-all-item-states db run-id test-name)
;;   (sqlite3:map-row 
;;    (lambda (a) a)
;;    db
;;    "SELECT DISTINCT state FROM tests WHERE item_path != '' AND state != 'DELETED' AND run_id=? AND testname=?"
;;    run-id test-name))
;; 
;; (define (db:get-all-item-statuses db run-id test-name)
;;   (sqlite3:map-row 
;;    (lambda (a) a)
;;    db
;;    "SELECT DISTINCT status FROM tests WHERE item_path != '' AND state != 'DELETED' AND state='COMPLETED' AND run_id=? AND testname=?"
;;    run-id test-name))

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

;;======================================================================
;; A G R E G A T E D   T R A N S A C T I O N   D B   W R I T E S 
;;======================================================================

(define db:queries 
  (list '(update-run-duration     "UPDATE tests SET run_duration=? WHERE id=?;")

	;; TESTS
	'(register-test          "INSERT OR IGNORE INTO tests (run_id,testname,event_time,item_path,state,status) VALUES (?,?,strftime('%s','now'),?,'NOT_STARTED','n/a');")
	;; Test state and status
	'(set-test-state         "UPDATE tests SET state=?   WHERE id=?;")
	'(set-test-status        "UPDATE tests SET state=?   WHERE id=?;")
	'(state-status           "UPDATE tests SET state=?,status=? WHERE id=?;") ;; D/ONE
	'(state-status-msg       "UPDATE tests SET state=?,status=?,comment=? WHERE id=?;") ;; DONE
	;; Test comment
	'(set-test-comment       "UPDATE tests SET comment=? WHERE id=?;")
	'(set-test-start-time    "UPDATE tests SET event_time=strftime('%s','now') WHERE id=?;") ;; DONE
	'(pass-fail-counts       "UPDATE tests SET pass_count=?,fail_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=?;") ;; DONE
	'(test-set-log            "UPDATE tests SET final_logf=? WHERE id=?;")      ;; DONE
	;; '(test-set-rundir-by-test-id "UPDATE tests SET rundir=? WHERE id=?")        ;; DONE
	;; '(test-set-rundir         "UPDATE tests SET rundir=? AND testname=? AND item_path=?;") ;; DONE
	'(test-set-rundir-shortdir "UPDATE tests SET rundir=?,shortdir=? WHERE testname=? AND item_path=? AND run_id=?;")    ;; BROKEN!!! NEEDS run-id
	'(delete-tests-in-state   ;; "DELETE FROM tests WHERE state=?;")                  ;; DONE
	  "UPDATE tests SET state='DELETED' WHERE state=?")
	'(tests:test-set-toplog   "UPDATE tests SET final_logf=? WHERE run_id=? AND testname=? AND item_path='';")
	'(update-cpuload-diskfree "UPDATE tests SET cpuload=?,diskfree=? WHERE id=?;") ;; DONE
	'(update-uname-host       "UPDATE tests SET uname=?,host=? WHERE id=?;")       ;; DONE
        '(update-test-rundat      "INSERT INTO test_rundat (test_id,update_time,cpuload,diskfree,diskusage,run_duration) VALUES (?,?,?,?,?,?);")
	'(update-test-state       "UPDATE tests SET state=? WHERE state=? AND run_id=? AND testname=? AND NOT (item_path='' AND testname IN (SELECT DISTINCT testname FROM tests WHERE testname=? AND item_path != ''));")
	'(update-test-status      "UPDATE tests SET status=? WHERE status like ? AND run_id=? AND testname=? AND NOT (item_path='' AND testname IN (SELECT DISTINCT testname FROM tests WHERE testname=? AND item_path != ''));")
	;; stuff for set-state-status-and-roll-up-items
	'(update-pass-fail-counts "UPDATE tests 
             SET fail_count=(SELECT count(id) FROM tests WHERE testname=? AND item_path != '' AND status IN ('FAIL','CHECK','INCOMPLETE','ABORT')),
                 pass_count=(SELECT count(id) FROM tests WHERE testname=? AND item_path != '' AND status IN ('PASS','WARN','WAIVED'))
             WHERE testname=? AND item_path='' AND run_id=?;") ;; DONE  ;; BROKEN!!! NEEDS run-id
	'(top-test-set-running  "UPDATE tests SET state='RUNNING' WHERE testname=? AND item_path='' AND run_id=?;") ;; DONE   ;; BROKEN!!! NEEDS run-id

	;; NOT USED
	;;
	;; Might be the following top-test-set-per-pf-counts query could be better based off of something like this:
	;;
	;; select state,status,count(state) from tests where run_id=59 AND testname='runfirst' group by state,status;
	;;
	'(top-test-set-per-pf-counts "UPDATE tests
                       SET state=CASE 
                                   WHEN (SELECT count(id) FROM tests 
                                                WHERE testname=?
                                                     AND item_path != '' 
                                                     AND status NOT IN ('n/a')
                                                     AND state in ('NOT_STARTED')) > 0 THEN 'UNKNOWN'
                                   WHEN (SELECT count(id) FROM tests 
                                                WHERE testname=?
                                                     AND item_path != '' 
                                                     AND (status NOT IN ('TEN_STRIKES','BLOCKED') OR status IN ('INCOMPLETE'))
                                                     AND state in ('RUNNING','NOT_STARTED','LAUNCHED','REMOTEHOSTSTART')) > 0 THEN 'RUNNING'
                                   WHEN (SELECT count(id) FROM tests 
                                                WHERE testname=?
                                                     AND item_path != '' 
                                                     AND state NOT IN ('COMPLETED','DELETED')) = 0 THEN 'COMPLETED'
                                   WHEN (SELECT count(id) FROM tests 
                                                WHERE testname=?
                                                     AND item_path != '' 
                                                     AND state = 'NOT_STARTED') > 0 THEN 'NOT_STARTED'
                                   ELSE 'UNKNOWN' END,
                            status=CASE 
                                  WHEN fail_count > 0 THEN 'FAIL' 
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state IN ('BLOCKED','INCOMPLETE')) > 0 THEN 'FAIL'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status IN ('INCOMPLETE','ABORT')) > 0 THEN 'ABORT'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status = 'AUTO') > 0 THEN 'AUTO'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status IN ('STUCK/INCOMPLETE', 'INCOMPLETE')) > 0 THEN 'INCOMPLETE'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state IN ('COMPLETED','STUCK/INCOMPLETE','INCOMPLETE')
                                              AND status = 'FAIL') > 0 THEN 'FAIL'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status = 'CHECK') > 0 THEN 'CHECK'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status = 'SKIP') > 0 THEN 'SKIP'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status = 'WARN') > 0 THEN 'WARN'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status = 'WAIVED') > 0 THEN 'WAIVED'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=? 
                                              AND item_path != ''
                                              AND state NOT IN ('DELETED')
                                              AND status NOT IN ('PASS','FAIL','WARN','WAIVED')) > 0 THEN 'ABORT'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state='NOT_STARTED') > 0 THEN 'n/a'
                                  WHEN (SELECT count(id) FROM tests
                                         WHERE testname=?
                                              AND item_path != ''
                                              AND state = 'COMPLETED'
                                              AND status = 'PASS') > 0 THEN 'PASS'
                                  WHEN pass_count > 0 AND fail_count=0 THEN 'PASS' 
                                  ELSE 'UNKNOWN' END
                       WHERE testname=? AND item_path='';") ;; DONE  ;; BROKEN!!! NEEDS run-id

	;; STEPS
	'(delete-test-step-records "UPDATE test_steps SET status='DELETED' WHERE test_id=?;")
	'(delete-test-data-records "UPDATE test_data  SET status='DELETED' WHERE test_id=?;") ;; using status since no state field
	))

(define (db:lookup-query qry-name)
  (let ((q (alist-ref qry-name db:queries)))
    (if q (car q) #f)))

;; do not run these as part of the transaction
(define db:special-queries   '(rollup-tests-pass-fail
			       ;; db:set-state-status-and-roll-up-items  ;; WHY NOT!?
			       login
			       immediate
			       flush
			       sync
			       set-verbosity
			       killserver
			       ))

(define (db:login dbstruct calling-path calling-version client-signature)
   (cond 
   ((not (equal? calling-path *toppath*))
    (list #f "Login failed due to mismatch paths: " calling-path ", " *toppath*))
   ;; ((not (equal? *run-id* run-id))
   ;;  (list #f "Login failed due to mismatch run-id: " run-id ", " *run-id*))
   ((not (equal? megatest-version calling-version))
    (list #t (conc "Login warning due to mismatch megatest version: " calling-version ", " megatest-version)))
   
    (else
    (hash-table-set! *logged-in-clients* client-signature (current-seconds))
    '(#t "successful login"))))

(define (db:general-call dbstruct stmtname params)
  (let ((query (let ((q (alist-ref (if (string? stmtname)
				       (string->symbol stmtname)
				       stmtname)
				   db:queries)))
 		 (if q (car q) #f))))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (apply sqlite3:execute db query params)
       #t))))

;; get a summary of state and status counts to calculate a rollup
;;
(define (db:get-state-status-summary dbstruct run-id testname)
  (let ((res   '()))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row
	(lambda (state status count)
	  (set! res (cons (vector state status count) res)))
	db
	"SELECT state,status,count(state) FROM tests WHERE run_id=? AND testname=? AND item_path='' GROUP BY state,status;"
	run-id testname)
       res))))

(define (db:get-latest-host-load dbstruct raw-hostname)
  (let* ((hostname (string-substitute "\\..*$" "" raw-hostname))
         (res  (cons -1 0)))
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row
        (lambda (cpuload update-time)  (set! res (cons cpuload update-time)))
        db
        "SELECT tr.cpuload, tr.update_time FROM test_rundat tr, tests t WHERE t.host=? AND tr.cpuload != -1  AND tr.test_id=t.id ORDER BY tr.update_time DESC LIMIT 1;"
        hostname))) res ))

(define (db:set-top-level-from-items dbstruct run-id testname)
  (let* ((summ  (db:get-state-status-summary dbstruct run-id testname))
	 (find  (lambda (state status)
		  (if (null? summ) 
		      #f
		      (let loop ((hed (car summ))
				 (tal (cdr summ)))
			(if (and (string-match state  (vector-ref hed 0))
				 (string-match status (vector-ref hed 1)))
			    hed
			    (if (null? tal)
				#f
				(loop (car tal)(cdr tal)))))))))


      ;;;     E D I T M E ! !


    (cond
     ((> (find "COMPLETED" ".*") 0) #f))))
		   
    

;; get the previous records for when these tests were run where all keys match but runname
;; NB// Merge this with test:get-previous-test-run-records? This one looks for all matching tests
;; can use wildcards. Also can likely be factored in with get test paths?
;;
;; Run this remotely!!
;;
(define (db:get-matching-previous-test-run-records dbstruct run-id test-name item-path)
  (let* ((keys    (db:get-keys dbstruct))
	 (selstr  (string-intersperse keys ","))
	 (qrystr  (string-intersperse (map (lambda (x)(conc x "=?")) keys) " AND "))
	 (keyvals #f)
	 (tests-hash (make-hash-table)))
    ;; first look up the key values from the run selected by run-id
    (db:with-db
     dbstruct #f #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (a . b)
	  (set! keyvals (cons a b)))
	db
	(conc "SELECT " selstr " FROM runs WHERE id=? ORDER BY event_time DESC;") run-id)))
    (if (not keyvals)
	'()
	(let ((prev-run-ids '()))
	  (db:with-db
	   dbstruct #f #f
	   (lambda (db)
	     (apply sqlite3:for-each-row
		    (lambda (id)
		      (set! prev-run-ids (cons id prev-run-ids)))
		    db
		    (conc "SELECT id FROM runs WHERE " qrystr " AND id != ?;") (append keyvals (list run-id)))))
	  ;; collect all matching tests for the runs then
	  ;; extract the most recent test and return that.
	  (debug:print 4 *default-log-port* "selstr: " selstr ", qrystr: " qrystr ", keyvals: " keyvals 
		       ", previous run ids found: " prev-run-ids)
	  (if (null? prev-run-ids) '()  ;; no previous runs? return null
	      (let loop ((hed (car prev-run-ids))
			 (tal (cdr prev-run-ids)))
		(let ((results (db:get-tests-for-run dbstruct hed (conc test-name "/" item-path) '() '() #f #f #f #f #f #f #f 'normal)))
		  (debug:print 4 *default-log-port* "Got tests for run-id " run-id ", test-name " test-name 
			       ", item-path " item-path " results: " (intersperse results "\n"))
		  ;; Keep only the youngest of any test/item combination
		  (for-each 
		   (lambda (testdat)
		     (let* ((full-testname (conc (db:test-get-testname testdat) "/" (db:test-get-item-path testdat)))
			    (stored-test   (hash-table-ref/default tests-hash full-testname #f)))
		       (if (or (not stored-test)
			       (and stored-test
				    (> (db:test-get-event_time testdat)(db:test-get-event_time stored-test))))
			   ;; this test is younger, store it in the hash
			   (hash-table-set! tests-hash full-testname testdat))))
		   results)
		  (if (null? tal)
		      (map cdr (hash-table->alist tests-hash)) ;; return a list of the most recent tests
		      (loop (car tal)(cdr tal))))))))))

;; Function recursively checks if <db>.journal exists; if yes means db busy; call itself after delayed interval
;; return the sqlite3 db handle if possible
;; 
(define (db:delay-if-busy dbdat #!key (count 6))
  (if (not (configf:lookup *configdat* "server" "delay-on-busy")) 
      (and dbdat (db:dbdat-get-db dbdat))
      (if dbdat
	  (let* ((dbpath (db:dbdat-get-path dbdat))
		 (db     (db:dbdat-get-db   dbdat)) ;; we'll return this so (db:delay--if-busy can be called inline
		 (dbfj   (conc dbpath "-journal")))
	    (if (handle-exceptions
		 exn
		 (begin
		   (debug:print-info 0 *default-log-port* "WARNING: failed to test for existance of " dbfj ", exn=" exn)
		   (thread-sleep! 1)
		   (db:delay-if-busy count (- count 1))) 
		 (common:file-exists? dbfj))
		(case count
		  ((6)
		   (thread-sleep! 0.2)
		   (db:delay-if-busy count: 5))
		  ((5)
		   (thread-sleep! 0.4)
		   (db:delay-if-busy count: 4))
		  ((4)
		   (thread-sleep! 0.8)
		   (db:delay-if-busy count: 3))
		  ((3)
		   (thread-sleep! 1.6)
		   (db:delay-if-busy count: 2))
		  ((2)
		   (thread-sleep! 3.2)
		   (db:delay-if-busy count: 1))
		  ((1)
		   (thread-sleep! 6.4)
		   (db:delay-if-busy count: 0))
		  (else
		   (debug:print-info 0 *default-log-port* "delaying db access due to high database load.")
		   (thread-sleep! 12.8))))
	    db) 
	  "bogus result from db:delay-if-busy")))

(define (db:test-get-records-for-index-file dbstruct run-id test-name)
  (let ((res '()))
    (db:with-db
     dbstruct
     run-id
     #f
     (lambda (db)
       (sqlite3:for-each-row 
	(lambda (id itempath state status run_duration logf comment)
	  (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 testname=? AND item_path != '' AND run_id=?;" ;; BUG! WHY NO run_id?
	test-name
	run-id)
       res))))

;;======================================================================
;; Tests meta data
;;======================================================================

;; returns a hash table of tags to tests
;;
(define (db:get-tests-tags dbstruct)
  (db:with-db
   dbstruct #f #f
   (lambda (db)
     (let* ((res     (make-hash-table)))
       (sqlite3:for-each-row
	(lambda (testname tags-in)
	  (let ((tags (string-split tags-in ",")))
	    (for-each
	     (lambda (tag)
	       (hash-table-set! res tag
				(delete-duplicates
				 (cons testname (hash-table-ref/default res tag '())))))
	     tags)))
	db
	"SELECT testname,tags FROM test_meta")
       (hash-table->alist res)))))

;; read the record given a testname
(define (db:testmeta-get-record dbstruct testname)
  (let ((res   #f))
    (db:with-db
     dbstruct
     #f
     #f
     (lambda (db)
       (sqlite3:for-each-row
	(lambda (id testname author owner description reviewed iterated avg_runtime avg_disk tags jobgroup)
	  (set! res (vector id testname author owner description reviewed iterated avg_runtime avg_disk tags jobgroup)))
	db
	"SELECT id,testname,author,owner,description,reviewed,iterated,avg_runtime,avg_disk,tags,jobgroup FROM test_meta WHERE testname=?;"
	testname)
       res))))

;; create a new record for a given testname
(define (db:testmeta-add-record dbstruct testname)
  (db:with-db dbstruct #f #f 
	      (lambda (db)
		(sqlite3:execute 
		 db
		 "INSERT OR IGNORE INTO test_meta (testname,author,owner,description,reviewed,iterated,avg_runtime,avg_disk,tags) VALUES (?,'','','','','','','','');" testname))))

;; update one of the testmeta fields
(define (db:testmeta-update-field dbstruct testname field value)
  (db:with-db dbstruct #f #f 
	      (lambda (db)
		(sqlite3:execute 
		 db
		 (conc "UPDATE test_meta SET " field "=? WHERE testname=?;") value testname))))

(define (db:testmeta-get-all dbstruct)
  (db:with-db dbstruct #f #f 
	      (lambda (db)
		(let ((res '()))
		  (sqlite3:for-each-row
		   (lambda (a . b)
		     (set! res (cons (apply vector a b) res)))
		   db
		   "SELECT id,testname,author,owner,description,reviewed,iterated,avg_runtime,avg_disk,tags,jobgroup FROM test_meta;")
		  res))))

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

;; A routine to map itempaths using a itemmap
;; patha and pathb must be strings or this will fail
;;
;; path-b is waiting on path-a
;;
(define (db:compare-itempaths test-b-name path-a path-b itemmaps )
  (debug:print-info 6 *default-log-port* "ITEMMAPS: " itemmaps)
  (let* ((itemmap    (tests:lookup-itemmap itemmaps test-b-name)))
    (if itemmap
	(let ((path-b-mapped (db:multi-pattern-apply path-b itemmap)))
	  (debug:print-info 6 *default-log-port* "ITEMMAP is " itemmap ", path: " path-b ", mapped path: " path-b-mapped)
	  (equal? path-a path-b-mapped))
	(equal? path-b path-a))))

;; A routine to convert test/itempath using a itemmap
;; NOTE: to process only an itempath (i.e. no prepended testname)
;;       just call db:multi-pattern-apply
;;
(define (db:convert-test-itempath path-in itemmap)
  (debug:print-info 6 *default-log-port* "ITEMMAP is " itemmap)
  (let* ((path-parts  (string-split path-in "/"))
	 (test-name   (if (null? path-parts) "" (car path-parts)))
	 (item-path   (string-intersperse (if (null? path-parts) '() (cdr path-parts)) "/")))
    (conc test-name "/" 
	  (db:multi-pattern-apply item-path itemmap))))

;; patterns are:
;;    "rx1"  "replacement1"\n
;;    "rx2"  "replacement2"
;; etc.
;;
(define (db:multi-pattern-apply item-path itemmap)
  (let ((all-patts (string-split itemmap "\n")))
    (if (null? all-patts)
	item-path
	(let loop ((hed (car all-patts))
		   (tal (cdr all-patts))
		   (res item-path))
	  (let* ((parts (string-split hed))
		 (patt  (car parts))

		 (repl  (if (> (length parts) 1)(cadr parts) ""))

		 (newr  (if (and patt repl)
			    (begin
                              (handle-exceptions
                               exn
                               (begin
                                  (debug:print 0 *default-log-port*
                                  "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl ", exn=" exn)
                                 res)
                              (string-substitute patt repl res))


                              )
			    (begin
                              (debug:print 0 *default-log-port*
                               "WARNING: itemmap has problem \"" itemmap "\", patt: " patt ", repl: " repl)
			      res))))
	    (if (null? tal)
		newr
		(loop (car tal)(cdr tal) newr)))))))




;; the new prereqs calculation, looks also at itempath if specified
;; all prereqs must be met
;;    if prereq test with itempath='' is COMPLETED and PASS, WARN, CHECK, or WAIVED then prereq is met
;;    if prereq test with itempath=ref-item-path and COMPLETED with PASS, WARN, CHECK, or WAIVED then prereq is met
;;
;; Note: mode 'normal means that tests must be COMPLETED and ok (i.e. PASS, WARN, CHECK, SKIP or WAIVED)
;;       mode 'toplevel means that tests must be COMPLETED only
;;       mode 'itemmatch or 'itemwait means that tests items must be COMPLETED and (PASS|WARN|WAIVED|CHECK) [[ NB// NOT IMPLEMENTED YET ]]
;;       mode 'exclusive means this test/item cannot run if the same test/item is LAUNCHED,REMOTEHOSTSTART or RUNNING
;;
;; IDEA for consideration:
;;    1. collect all tests "upstream"
;;    2. any NOT completed and good? if yes => return those as prereqs not met, if no => return null list
;; 
;; (define (db:get-prereqs-not-met dbstruct run-id waitons ref-item-path mode)
(define (db:get-prereqs-not-met dbstruct run-id waitons ref-test-name ref-item-path mode itemmaps) ;; #!key (mode '(normal))(itemmap #f))
  ;; BBnote - rollup of an itemized test's overall state/status done in db:set-state-status-and-roll-up-items
  (append
   (if (member 'exclusive mode)
       (let ((running-tests (db:get-tests-for-run dbstruct
						  #f  ;; run-id of #f means for all runs. 
						  (if (string=? ref-item-path "")   ;; testpatt
						      ref-test-name
						      (conc ref-test-name "/" ref-item-path))
						  '("LAUNCHED" "REMOTEHOSTSTART" "RUNNING") ;; states
						  '()          ;; statuses
						  #f           ;; offset
						  #f           ;; limit
						  #f           ;; not-in
						  #f           ;; sort by
						  #f           ;; sort order
						  'shortlist   ;; query type
						  0            ;; last update, beginning of time ....
						  #f           ;; mode
						  )))
	;;(map (lambda (testdat)
	;;	(if (equal? (db:test-get-item-path testdat) "")
	;;	    (db:test-get-testname testdat)
	;;	    (conc (db:test-get-testname testdat)
	;;		  "/"
	;;		  (db:test-get-item-path testdat))))
	 running-tests) ;; calling functions want the entire data
       '())

   ;; collection of: for each waiton -
   ;;   if this ref-test-name is an item in an itemized test and mode is itemwait/itemmatch:
   ;;     if waiton is not itemized - if waiton is not both completed and in ok status, add as unmet prerequisite
   ;;     if waiton is itemized:
   ;;           and waiton's items are not expanded, add as unmet prerequisite
   ;;           else if matching waiton item is not both completed and in an ok status, add as unmet prerequisite
   ;;   else
   ;;    if waiton toplevel is not in both completed and ok status, add as unmet prerequisite

   (if (or (not waitons)
	   (null? waitons))
       '()
       (let* ((ref-test-itemized-mode (not (null? (lset-intersection eq? mode '(itemmatch itemwait))))) ;; how is this different from using member?
              (ref-test-toplevel-mode (not (null? (lset-intersection eq? mode '(toplevel)))))
              (ref-test-is-toplevel   (equal? ref-item-path ""))
              (ref-test-is-item       (not ref-test-is-toplevel))
              (unmet-pre-reqs '())
	      (result         '())
              (unmet-prereq-items '())
              )
	 (for-each  ; waitons
	  (lambda (waitontest-name)
	    ;; by getting the tests with matching name we are looking only at the matching test 
	    ;; and related sub items
	    ;; next should be using mt:get-tests-for-run?

            (let (;(waiton-is-itemized ...)
                  ;(waiton-items-are-expanded ...)
                  (waiton-tests             (db:get-tests-for-run-state-status dbstruct run-id waitontest-name))
		  (ever-seen         #f)
		  (parent-waiton-met #f)
		  (item-waiton-met   #f)

                  )
	      (for-each ; test expanded from waiton
	       (lambda (waiton-test) 
		 (let* ((waiton-state             (db:test-get-state waiton-test))
			(waiton-status            (db:test-get-status waiton-test))
			(waiton-item-path         (db:test-get-item-path waiton-test)) ;; BB- this is the upstream itempath
			(waiton-test-name         (db:test-get-testname waiton-test))
                        (waiton-is-toplevel       (equal? waiton-item-path ""))
                        (waiton-is-item           (not waiton-is-toplevel))
			(waiton-is-completed      (member waiton-state  *common:ended-states*))
			(waiton-is-running        (member waiton-state  *common:running-states*))
			(waiton-is-killed         (member waiton-state  *common:badly-ended-states*))
			(waiton-is-ok             (member waiton-status *common:well-ended-states*)) 
			;;                                              testname-b    path-a    path-b
			(same-itempath            (db:compare-itempaths ref-test-name waiton-item-path ref-item-path itemmaps)) ;; (equal? ref-item-path waiton-item-path)))
			(real-ref-test-name       (car (string-split ref-test-name "/"))) ;; I THINK ref-test-name SHOULD NEVER HAVE THE ITEM_PATH!
			(test-and-ref-are-same    (equal? real-ref-test-name waiton-test-name)))
		   (debug:print 4 *default-log-port* "waiton-test-name " waiton-test-name " ref-test-name: " ref-test-name " test-and-ref-are-same: " test-and-ref-are-same)
		   (set! ever-seen #t)
                   ;;(BB> "***consider waiton "waiton-test"/"waiton-item-path"***")
                   (cond
                    ;; case 0 - toplevel of an itemized test, at least one item in prereq has completed
                    ((and waiton-is-item ref-test-is-toplevel ref-test-itemized-mode waiton-is-completed)
                     (set! parent-waiton-met #t))

                    ;; case 1, non-item (parent test) is 
		    ((and waiton-is-toplevel ;; this is the parent test of the waiton being examined
			  waiton-is-completed
                          ;;(BB> "cond1")
			  (or waiton-is-ok ref-test-toplevel-mode)) ;;  itemmatch itemwait))))))
		     (set! parent-waiton-met #t))
		    ;; Special case for toplevel and KILLED
		    ((and waiton-is-toplevel ;; this is the parent test
			  waiton-is-killed
			  (member 'toplevel mode))
                     ;;(BB> "cond2")
		     (set! parent-waiton-met #t))
		    ;; For itemwait mode IFF the previous matching item is good the set parent-waiton-met
                    ((and ref-test-itemized-mode ref-test-is-item same-itempath)
                     ;;(BB> "cond3")
		     (if (and waiton-is-completed (or waiton-is-ok ref-test-toplevel-mode)) 
                         (set! item-waiton-met #t)
                         (set! unmet-prereq-items (cons waiton-test unmet-prereq-items)))
                     (if (and waiton-is-toplevel ;; if upstream rollup test is completed, parent-waiton-met is set
			      (or waiton-is-completed waiton-is-running))
			 (set! parent-waiton-met #t)))
		    ;; normal checking of parent items, any parent or parent item not ok blocks running
		    ((and waiton-is-completed
			  (or waiton-is-ok 
			      (member 'toplevel mode))              ;; toplevel does not block on FAIL
			  (and waiton-is-ok (member 'itemmatch mode) ;; itemmatch blocks on not ok ;; TODO: THIS IS PROBABLY A BUG.  ITEMMATCH AND ITEMWAIT ARE SYNONYMS!! WHAT HAPPENED OT ITEMWAIT???
                               ))
                     ;;(BB> "cond4")
		     (set! item-waiton-met #t))
                    ((and waiton-is-completed waiton-is-ok same-itempath)
                     ;;(BB> "cond5")
                     (set! item-waiton-met #t))
		    ((and waiton-is-completed waiton-is-ok test-and-ref-are-same) ;; probably from [waitons] table
		     (set! item-waiton-met #t))
                    (else
                     #t
                     ;;(BB> "condelse")
                     ))))
               waiton-tests)
	      ;; both requirements, parent and item-waiton must be met to NOT add item to
	      ;; prereq's not met list
               ;; (BB>
               ;;  "\n* waiton-tests           "waiton-tests
               ;;  "\n* parent-waiton-met      "parent-waiton-met
               ;;  "\n* item-waiton-met        "item-waiton-met
               ;;  "\n* ever-seen              "ever-seen
               ;;  "\n* ref-test-itemized-mode "ref-test-itemized-mode
               ;;  "\n* unmet-prereq-items     "unmet-prereq-items
               ;;  "\n* result (pre)           "result
               ;;  "\n* ever-seen              "ever-seen
               ;;  "\n")

              (cond
               ((and ref-test-itemized-mode ref-test-is-item (not (null? unmet-prereq-items)))
                (set! result (append unmet-prereq-items result)))
               ((not (or parent-waiton-met item-waiton-met))
                (set! result (append (if (null? waiton-tests) (list waitontest-name) waiton-tests) result))) ;; appends the string if the full record is not available
	      ;; if the test is not found then clearly the waiton is not met...
	      ;; (if (not ever-seen)(set! result (cons waitontest-name result)))))
               ((not ever-seen)
                (set! result (append (if (null? waiton-tests)(list waitontest-name) waiton-tests) result))))))
	  waitons)
	 (delete-duplicates result)))))

;;======================================================================
;; To sync individual run
;;======================================================================
(define (db:get-run-record-ids dbstruct target run keynames test-patt)
(let ((backcons (lambda (lst item)(cons item lst))))
    (db:with-db
     dbstruct #f #f 
     (lambda (db)
        (let* ((keystr (string-intersperse 
		     (map (lambda (key val)
			    (conc key " like '" val "'"))
			  keynames 
			  (string-split target "/"))
		     " AND "))
         (run-qry (conc "SELECT id FROM runs  WHERE " keystr  " and runname='" run"'"))
         (test-qry (conc "SELECT id FROM tests WHERE run_id in (" run-qry ") and testname like '" test-patt "'")))
         (print run-qry)
         (print test-qry) 
	 `((runs       . ,(sqlite3:fold-row backcons '() db run-qry))
	   (tests      . ,(sqlite3:fold-row backcons '() db test-qry))
	   (test_steps . ,(sqlite3:fold-row backcons '() db (conc "SELECT id FROM test_steps WHERE test_id in (" test-qry ")")))
	   (test_data  . ,(sqlite3:fold-row backcons '() db (conc "SELECT id FROM test_data  WHERE test_id in (" test-qry ")" )))
	   ))))))

;;======================================================================
;; Just for sync, procedures to make sync easy
;;======================================================================

;; get an alist of record ids changed since time since-time
;;   '((runs . (1 2 3 ...))(steps . (5 6 7 ...) ...))
;;
(define (db:get-changed-record-ids dbstruct since-time)
  ;; no transaction, allow the db to be accessed between the big queries
  (let ((backcons (lambda (lst item)(cons item lst))))
    (db:with-db
     dbstruct #f #f 
     (lambda (db)
       `((runs       . ,(sqlite3:fold-row backcons '() db "SELECT id FROM runs  WHERE last_update>=?" since-time))
	 (tests      . ,(sqlite3:fold-row backcons '() db "SELECT id FROM tests WHERE last_update>=?" since-time))
	 (test_steps . ,(sqlite3:fold-row backcons '() db "SELECT id FROM test_steps WHERE last_update>=?" since-time))
	 (test_data  . ,(sqlite3:fold-row backcons '() db "SELECT id FROM test_data  WHERE last_update>=?" since-time))
	 ;; (test_meta  . ,(fold-row backcons '() db "SELECT id FROM test_meta  WHERE last_update>?" since-time))
	 (run_stats  . ,(sqlite3:fold-row backcons '() db "SELECT id FROM run_stats  WHERE last_update>=?" since-time))
	 )))))

;;======================================================================
;; Extract ods file from the db
;;======================================================================

;; NOT REWRITTEN YET!!!!!

;; runspatt is a comma delimited list of run patterns
;; keypatt-alist must contain *all* keys with an associated pattern: '( ("KEY1" "%") .. )
(define (db:extract-ods-file dbstruct outputfile keypatt-alist runspatt pathmod)
  (let* ((keysstr  (string-intersperse (map car keypatt-alist) ","))
	 (keyqry   (string-intersperse (map (lambda (p)(conc (car p) " LIKE ? ")) keypatt-alist) " AND "))
	 (numkeys  (length keypatt-alist))
	 (test-ids '())
	 (dbdat    (db:get-db dbstruct))
	 (db       (db:dbdat-get-db dbdat))
	 (windows  (and pathmod (substring-index "\\" pathmod)))
	 (tempdir  (conc "/tmp/" (current-user-name) "/" runspatt "_" (random 10000) "_" (current-process-id)))
	 (runsheader (append (list "Run Id" "Runname") ; 0 1
			     (map car keypatt-alist)   ; + N = length keypatt-alist
			     (list "Testname"          ; 2
				   "Item Path"         ; 3 
				   "Description"       ; 4 
				   "State"             ; 5 
				   "Status"            ; 6  
				   "Final Log"         ; 7 
				   "Run Duration"      ; 8 
				   "When Run"          ; 9 
				   "Tags"              ; 10
				   "Run Owner"         ; 11
				   "Comment"           ; 12
				   "Author"            ; 13
				   "Test Owner"        ; 14
				   "Reviewed"          ; 15
				   "Diskfree"          ; 16
				   "Uname"             ; 17
				   "Rundir"            ; 18
				   "Host"              ; 19
				   "Cpu Load"          ; 20
				   )))
	 (results (list runsheader))			 
	 (testdata-header (list "Run Id" "Testname" "Item Path" "Category" "Variable" "Value" "Expected" "Tol" "Units" "Status" "Comment"))
	 (mainqry (conc "SELECT
              t.testname,r.id,runname," keysstr ",t.testname,
              t.item_path,tm.description,t.state,t.status,
              final_logf,run_duration, 
              strftime('%m/%d/%Y %H:%M:%S',datetime(t.event_time,'unixepoch'),'localtime'),
              tm.tags,r.owner,t.comment,
              author,
              tm.owner,reviewed,
              diskfree,uname,rundir,
              host,cpuload
            FROM tests AS t JOIN runs AS r ON t.run_id=r.id JOIN test_meta AS tm ON tm.testname=t.testname
            WHERE runname LIKE ? AND " keyqry ";")))
    (debug:print 2 *default-log-port* "Using " tempdir " for constructing the ods file. keyqry: " keyqry " keystr: " keysstr " with keys: " (map cadr keypatt-alist)
		 "\n      mainqry: " mainqry)
    ;; "Expected Value"
    ;; "Value Found"
    ;; "Tolerance"
    (apply sqlite3:for-each-row
	   (lambda (test-id . b)
	     (set! test-ids (cons test-id test-ids))   ;; test-id is now testname
	     (set! results (append results ;; note, drop the test-id
				   (list
				    (if pathmod
					(let* ((vb        (apply vector b))
					       (keyvals   (let loop ((i    0)
								     (res '()))
							    (if (>= i numkeys)
								res
								(loop (+ i 1)
								      (append res (list (vector-ref vb (+ i 2))))))))
					       (runname   (vector-ref vb 1))
					       (testname  (vector-ref vb (+  2 numkeys)))
					       (item-path (vector-ref vb (+  3 numkeys)))
					       (final-log (vector-ref vb (+  7 numkeys)))
					       (run-dir   (vector-ref vb (+ 18 numkeys)))
					       (log-fpath (conc run-dir "/"  final-log))) ;; (string-intersperse keyvals "/") "/" testname "/" item-path "/"
					  (debug:print 4 *default-log-port* "log: " log-fpath " exists: " (common:file-exists? log-fpath))
					  (vector-set! vb (+ 7 numkeys) (if (common:file-exists? log-fpath)
									    (let ((newpath (conc pathmod "/"
												 (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 (debug:debug-mode 1)
										(conc final-log " not-found")
										"")))
					  (vector->list vb))
					b)))))
	   db
	   mainqry
	   runspatt (map cadr keypatt-alist))
    (debug:print 2 *default-log-port* "Found " (length test-ids) " records")
    (set! results (list (cons "Runs" results)))
    ;; now, for each test, collect the test_data info and add a new sheet
    (for-each
     (lambda (test-id)
       (let ((test-data (list testdata-header))
	     (curr-test-name #f))
	 (sqlite3:for-each-row
	  (lambda (run-id testname item-path category variable value expected tol units status comment)
	    (set! curr-test-name testname)
	    (set! test-data (append test-data (list (list run-id testname item-path category variable value expected tol units status comment)))))
	  db 
	  ;; "SELECT run_id,testname,item_path,category,variable,td.value AS value,expected,tol,units,td.status AS status,td.comment AS comment FROM test_data AS td INNER JOIN tests ON tests.id=td.test_id WHERE test_id=?;"
	  "SELECT run_id,testname,item_path,category,variable,td.value AS value,td.expected,td.tol,td.units,td.status AS status,td.comment AS comment FROM test_data AS td INNER JOIN tests ON tests.id=td.test_id WHERE testname=?;"
	  test-id)
	 (if curr-test-name
	     (set! results (append results (list (cons curr-test-name test-data)))))
	 ))
     (sort (delete-duplicates test-ids) string<=))
    (system (conc "mkdir -p " tempdir))
    ;; (pp results)
    (ods:list->ods 
     tempdir
     (if (string-match (regexp "^[/~]+.*") outputfile) ;; full path?
	 outputfile
	 (begin
	   (debug:print 0 *default-log-port* "WARNING: path given, " outputfile " is relative, prefixing with current directory")
	   (conc (current-directory) "/" outputfile)))
     results)
    ;; brutal clean up
    (stack-push! (dbr:dbstruct-dbstack dbstruct) dbdat)
    (system "rm -rf tempdir")))

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