Megatest

;;======================================================================
;; Test info panel
;;======================================================================

;;======================================================================
;; C O M M O N
;;======================================================================

;; data for each specific tab goes here
;;
(defstruct dboard:tabdat 
  ;; runs
  ((allruns         '())                 : list)        ;; list of dboard:rundat records
  ((allruns-by-id    (make-hash-table))  : hash-table)  ;; hash of run-id -> dboard:rundat records
  ((done-runs       '())                 : list)        ;; list of runs already drawn
  ((not-done-runs   '())                 : list)        ;; list of runs not yet drawn
  (header            #f)                                ;; header for decoding the run records
  (keys              #f)                                ;; keys for this run (i.e. target components)
  ((numruns          (string->number (or (args:get-arg "-cols")
					 (configf:lookup *configdat* "dashboard" "cols")
					 "8")))                 : number)      ;; 
  ((tot-runs          0)                 : number)
  ((last-data-update  0)                 : number)      ;; last time the data in allruns was updated
  ((last-runs-update  0)                 : number)      ;; last time we pulled the runs info to update the tree
  (runs-mutex         (make-mutex))                     ;; use to prevent parallel access to draw objects
  ((run-update-times  (make-hash-table)) : hash-table)  ;; update times indexed by run-id
  ((last-test-dat     (make-hash-table)) : hash-table)  ;; cache last tests dat by run-id
  ((run-db-paths      (make-hash-table)) : hash-table)  ;; cache the paths to the run db files

  ;; Runs view
  ((buttondat         (make-hash-table)) : hash-table)  ;;     
  ((item-test-names  '())                : list)        ;; list of itemized tests
  ((run-keys          (make-hash-table)) : hash-table)
  (runs-matrix        #f)                               ;; used in newdashboard
  ((start-run-offset   0)                : number)      ;; left-right slider value
  ((start-test-offset  0)                : number)      ;; up-down slider value
  ((runs-btn-height    (or (configf:lookup *configdat* "dashboard" "btn-height") "x16")) : string)  ;; was 12
  ((runs-btn-fontsz    (or (configf:lookup *configdat* "dashboard" "btn-fontsz") "10")) : string)   ;; was 8
  ((runs-cell-width    (or (configf:lookup *configdat* "dashboard" "cell-width") "50")) : string)   ;; was 50
  ((all-test-names     '())              : list)
  
  ;; Canvas and drawing data
  (cnv                #f)
  (cnv-obj            #f)
  (drawing            #f)
  ((run-start-row     0)                 : number)
  ((max-row           0)                 : number)
  ((running-layout    #f)                : boolean)
  (originx            #f)
  (originy            #f)
  ((layout-update-ok  #t)                : boolean)
  ((compact-layout    #t)                : boolean)

  ;; Run times layout
  ;; (graph-button-box #f) ;; RA => Think it is not referenced anywhere
  (graph-matrix     #f)
  ((graph-matrix-table (make-hash-table)) : hash-table) ;; graph-dats referenced thru graph name info
  ((graph-cell-table (make-hash-table)) : hash-table) ;; graph-dats referenced thru matrix cell info
  ((graph-matrix-row 1) : number)
  ((graph-matrix-col 1) : number)

  ;; Controls used to launch runs etc.
  ((command          "")                 : string)      ;; for run control this is the command being built up
  (command-tb        #f)	                        ;; widget for the type of command; run, remove-runs etc.
  (test-patterns-textbox #f)                            ;; text box widget for editing a list of test patterns
  (key-listboxes     #f)			         
  (key-lbs           #f)			         
  run-name                                              ;; from run name setting widget
  states                                                ;; states for -state s1,s2 ...
  statuses                                              ;; statuses for -status s1,s2 ...
						         
  ;; Selector variables				         
  curr-run-id                                           ;; current row to display in Run summary view
  prev-run-id                                           ;; previous runid selected before current runid was selected (used in xor-two-runs runs summary mode
  curr-test-ids                                         ;; used only in dcommon:run-update which is used in newdashboard
  ((filters-changed  #t)                  : boolean)    ;; to indicate that the user changed filters for this tab
  ((last-filter-str  "")                  : string)      ;; conc the target runname and testpatt for a signature of changed filters
  ((hide-empty-runs  #f)                  : boolean)     
  ((hide-not-hide    #t)                  : boolean)     ;; toggle for hide/not hide empty runs
  (hide-not-hide-button #f)
  ((searchpatts        (make-hash-table)) : hash-table)  ;;
  ((state-ignore-hash  (make-hash-table)) : hash-table)  ;; hash of  STATE => #t/#f for display control
  ((status-ignore-hash (make-hash-table)) : hash-table)  ;; hash of STATUS => #t/#f
  (target              #f)
  (test-patts          #f)

  ;; db info to file the .db files for the area
  (access-mode        (db:get-access-mode))             ;; use cached db or not
  (dbdir               #f)
  (dbfpath             #f)
  (dbkeys              #f)
  ((last-db-update     (make-hash-table)) : hash-table) ;; last db file timestamp
  (monitor-db-path     #f)                              ;; where to find monitor.db
  ro                                                    ;; is the database read-only?

  ;; tests data
  ((num-tests          10)               : number)      ;; total number of tests to show (used in the old runs display)

  ;; runs tree
  ((path-run-ids       (make-hash-table)) : hash-table) ;; path (target / runname) => id
  (runs-tree           #f)
  ((runs-tree-ht       (make-hash-table)) : hash-table) ;; track which targets added to tree (merge functionality with path-run-ids?)

  ;; tab data
  ((view-changed       #t)                : boolean)   
  ((xadj               0)                 : number)     ;; x slider number (if using canvas)
  ((yadj               0)                 : number)     ;; y slider number (if using canvas)
  ;; runs-summary tab state
  ((runs-summary-modes '((one-run . "Show One Run") (xor-two-runs . "XOR Two Runs") (xor-two-runs-hide-clean . "XOR; Hide Clean")) )   : list)
  ((runs-summary-mode-buttons '())               : list)
  ((runs-summary-mode  'one-run)            : symbol)
  ((runs-summary-mode-change-callbacks '()) : list)
  (runs-summary-source-runname-label #f)
  (runs-summary-dest-runname-label #f)
  ;; runs summary view
  
  tests-tree       ;; used in newdashboard
  )

(define *dashboard-comment-share-slot* #f)

(define (message-window msg)
  (iup:show
   (iup:dialog
    (iup:vbox 

				 (common:run-a-command cmd with-orig-env: #t))))
	       (command-text-box (iup:textbox
				  #:expand "HORIZONTAL"
				  #:font "Courier New, -10"
				  #:action (lambda (obj cnum val)
					     ;; (print "cnum=" cnum)
					     (if (eq? cnum 13)
						 (command-proc obj)))
				  ))
	       (command-launch-button (iup:button "Execute!" #:action (lambda (x)
									(command-proc command-text-box))))
	;; (lambda (x)
	;; 								(let* ((cmd     (iup:attribute command-text-box "VALUE"))
	;; 								       (fullcmd (conc (dtests:get-pre-command)
	;; 										      cmd 

			       (lambda (x)
				 ;; Now start keeping the gui updated from the db
				 (refreshdat) ;; update from the db here
					;(thread-suspend! other-thread)
				 (if *exit-started*
				     (set! *exit-started* 'ok))))))))))

(define (colors-similar? color1 color2)
  (let* ((c1    (map string->number (string-split color1)))
	 (c2    (map string->number (string-split color2)))
	 (delta (map (lambda (a b)(abs (- a b))) c1 c2)))
    (null? (filter (lambda (x)(> x 3)) delta))))

;; Display the tests as rows of boxes on the test/task pane
;;
(define (dashboard:draw-tests cnv xadj yadj tests-draw-state sorted-testnames test-records)
  (canvas-clear! cnv)
  (canvas-font-set! cnv "Helvetica, -10")
  (let-values (((sizex sizey sizexmm sizeymm) (canvas-size cnv))
	       ((originx originy)             (canvas-origin cnv)))
    ;; (print "originx: " originx " originy: " originy)
    ;; (canvas-origin-set! cnv 0 (- (/ sizey 2)))
    (if (hash-table-ref/default tests-draw-state 'first-time #t)
	(begin
	  (hash-table-set! tests-draw-state 'first-time #f)
	  (hash-table-set! tests-draw-state 'scalef 1)
	  (hash-table-set! tests-draw-state 'tests-info (make-hash-table))
	  (hash-table-set! tests-draw-state 'selected-tests (make-hash-table))
	  ;; set these 
	  (dcommon:initial-draw-tests cnv xadj yadj sizex sizey sizexmm sizeymm originx originy tests-draw-state sorted-testnames test-records))
	(dcommon:redraw-tests cnv xadj yadj sizex sizey sizexmm sizeymm originx originy tests-draw-state sorted-testnames test-records))
    ))

(define (dboard:tabdat-test-patts-use vec)    
  (let ((val (dboard:tabdat-test-patts vec)))(if val val ""))) ;;RADT => What is the if for?

;; additional setters for dboard:data
(define (dboard:tabdat-test-patts-set!-use    vec val)
  (dboard:tabdat-test-patts-set! vec (if (equal? val "") #f val)))

;; Extract the various bits of data from tabdat and create the command line equivalent that will be displayed
;;
(define (dashboard:update-run-command tabdat)
  (let* ((cmd-tb       (dboard:tabdat-command-tb tabdat))
	 (cmd          (dboard:tabdat-command    tabdat))
	 (test-patt    (let ((tp (dboard:tabdat-test-patts tabdat)))
			 (if (or (not tp)
                                 (equal? tp ""))
                             "%"
                             tp)))
	 (states       (dboard:tabdat-states     tabdat))
	 (statuses     (dboard:tabdat-statuses   tabdat))
	 (target       (let ((targ-list (dboard:tabdat-target     tabdat)))
			 (if targ-list (string-intersperse targ-list "/") "no-target-selected")))
	 (run-name     (dboard:tabdat-run-name   tabdat))
	 (states-str   (if (or (not states)
			       (null? states))
			   ""
			   (conc " -state "  (string-intersperse states ","))))
	 (statuses-str (if (or (not statuses)
			       (null? statuses))
			   ""
			   (conc " -status " (string-intersperse statuses ","))))
	 (full-cmd  "megatest"))
    (case (string->symbol cmd)
      ((run)
       (set! full-cmd (conc full-cmd 
			    " -run"
			    " -testpatt "
			    test-patt
			    " -target "
			    target
			    " -runname "
			    run-name
			    " -clean-cache"
			    )))
      ((remove-runs)
       (set! full-cmd (conc full-cmd
			    " -remove-runs -runname "
			    run-name
			    " -target " 
			    target
			    " -testpatt "
			    test-patt
			    states-str
			    statuses-str
			    )))
      (else (set! full-cmd " no valid command ")))
    (iup:attribute-set! cmd-tb "VALUE" full-cmd)))

  (let* ((tnum          (or tab-num
			     (dboard:commondat-curr-tab-num commondat)))
	 (curr-updaters (hash-table-ref/default (dboard:commondat-updaters commondat) tnum '())))
    (hash-table-set! (dboard:commondat-updaters commondat)
		     tnum
		     (cons updater curr-updaters))))
















































































































;; register tabdat with BBpp
;; this is used by BBpp (Brandon's pretty printer) to convert dboard:tabdat into a composition of lists that pp will handle
(hash-table-set! *BBpp_custom_expanders_list* TABDAT:
                 (cons dboard:tabdat?
                       (lambda (tabdat-item)
                         (filter
                          (lambda (alist-entry)
                            (member (car alist-entry)
                                    '(allruns-by-id allruns))) ;; FIELDS OF INTEREST
                          (dboard:tabdat->alist tabdat-item)))))



(define (dboard:tabdat-target-string vec)
  (let ((targ (dboard:tabdat-target vec)))
    (if (list? targ)(string-intersperse targ "/") "no-target-specified")))








(define (dboard:tabdat-make-data)
  (let ((dat (make-dboard:tabdat)))
    (dboard:setup-tabdat dat)
    (dboard:setup-num-rows dat)
    dat))

(define (dboard:setup-tabdat tabdat)

		(set! i (+ i 1)))
	      items)
    ;; (iup:attribute-set! lb "VALUE" (if selected-item selected-item ""))
    i))

(define (pad-list l n)(append l (make-list (- n (length l)))))







(define (dboard:compare-tests test1 test2)
  (let* ((test-name1  (db:test-get-testname  test1))
	 (item-path1  (db:test-get-item-path test1))
	 (eventtime1  (db:test-get-event_time test1))
	 (test-name2  (db:test-get-testname  test2))
	 (item-path2  (db:test-get-item-path test2))
	 (eventtime2  (db:test-get-event_time test2))

				      (hash-table-delete! alltgls item)
				      (hash-table-set! alltgls item #t))
				  (let ((all (hash-table-keys alltgls)))
				    (proc all)))
				"text-list-toggle-box"))))
		items))))







































































;;======================================================================
;; R U N   C O N T R O L S
;;======================================================================
;;
;; A gui for launching tests
;;

	 (lambda (row)
	   (let ((var  (car row))
		 (val  (cadr row)))
	     (hash-table-set! result var 
			      (if (and (hash-table-ref/default results var #f)
				       (assoc var paths)) ;; this var is a path and there is a previous path
				  (let ((sep (cadr (assoc var paths))))
				    (env:merge-path-envvar sep (hash-table-ref results var) val))
				  val)))))
	(sql db "SELECT var,val FROM envvars WHERE context=?")
	context))
     contexts)
    result))

;;  get list of removed variables between two contexts
;;

;;======================================================================
;; Copyright 2006-2012, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     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/>.
;;
;;======================================================================

;; NOTE: These functions will move to iuputils

(define (gutils:colors-similar? color1 color2)
  (let* ((c1 (map string->number (string-split color1)))
	 (c2 (map string->number (string-split color2)))
	 (delta (map (lambda (a b)(abs (- a b))) c1 c2)))
    (null? (filter (lambda (x)(> x 3)) delta))))

(define gutils:colors
  '((PASS . "70 249 73")
    (FAIL . "253 33 49")
    (SKIP . "230 230 0")))

(define (gutils:get-color-spec effective-state)
  (or (alist-ref effective-state gutils:colors)
      (alist-ref 'FAIL gutils:colors)))

;; BBnote - state status dashboard button color / text defined here
(define (gutils:get-color-for-state-status state status);; #!key (get-label #f))
  ;; ((if get-label cadr car)
  (case (string->symbol state)
    ((COMPLETED) ;; ARCHIVED)
     (case (string->symbol status)
       ((PASS)        (list "70  249 73" status))
       ((PREQ_FAIL PREQ_DISCARDED) (list "255 127 127" status))
       ((WARN WAIVED) (list "255 172 13" status))
       ((SKIP)        (list (gutils:get-color-spec 'SKIP) status))
       ((ABORT)       (list "198 36 166" status))
       (else (list "253 33 49" status))))
    ((ARCHIVED)
     (case (string->symbol status)
       ((PASS)        (list "70  170 73" status))
       ((WARN WAIVED) (list "200 130 13" status))
       ((SKIP)        (list (gutils:get-color-spec 'SKIP) status))
       (else (list "180 33 49" status))))
    ;;      (if (equal? status "PASS")
    ;;	  '("70 249 73" "PASS")
    ;;	  (if (or (equal? status "WARN")
    ;;		  (equal? status "WAIVED"))
    ;;	      (list "255 172 13" status)
    ;;	      (list "223 33 49"  status)))) ;; greenish orangeish redish
    ((LAUNCHED)         (list "101 123 142"  state))
    ((CHECK)            (list "255 100 50"   state))
    ((REMOTEHOSTSTART)  (list "50 130 195"   state))
    ((RUNNING STARTED)          (list "9 131 232"    state))
    ((KILLREQ)          (list "39 82 206"    state))
    ((KILLED)           (list "234 101 17"   state))
    ((NOT_STARTED)      (case (string->symbol status)
			  ((CHECK STARTED)(list (gutils:get-color-spec 'SKIP) state))
			  (else   (list "240 240 240"                 state))))
    ;; for xor mode below
    ;;
    ((CLEAN)
     (case (string->symbol status)
       ((CLEAN-FAIL CLEAN-CHECK CLEAN-ABORT)  (list "200 130 13" status)) ;; orange requested for these
       (else  (list "60  235 63" status))))
    ((DIRTY-BETTER)     (list "160  255 153" status))
    ((DIRTY-WORSE)      (list "165 42  42" status))
    ((BOTH-BAD)         (list "180 33 49" status))

    (else               (list "192 192 192"  state))))

	 (debug:print-info 11 *default-log-port* "got res=" res)
	 (if (vector? res)
	     (if (vector-ref res 0) ;; this is the first flag or the second flag?
		 res ;; this is the *inner* vector? seriously? why?
                 (if (debug:debug-mode 11)
                     (let ((call-chain (get-call-chain))) ;; note: this code also called in nmsg-transport - consider consolidating it
                       (print-call-chain (current-error-port))
                       (debug:print-error 11 *default-log-port* "error above occured at server, res=" res) ;; " message: " ((condition-property-accessor 'exn 'message) exn))
                       (debug:print 11 *default-log-port* " server call chain:")
                       (pp (vector-ref res 1) (current-error-port))
                       (signal (vector-ref res 0)))
                     res))
	     (signal (make-composite-condition
		      (make-property-condition 
		       'timeout

;; used and to shutdown after sometime if it is not.
;;
(define (http-transport:keep-running) 
  ;; if none running or if > 20 seconds since 
  ;; server last used then start shutdown
  ;; This thread waits for the server to come alive
  (debug:print-info 0 *default-log-port* "Starting the sync-back, keep alive thread in server")
  (let* ((sdat              #f)
	 (tmp-area          (common:get-db-tmp-area))
	 (started-file      (conc tmp-area "/.server-started"))
	 (server-start-time (current-seconds))
	 (server-info (let loop ((start-time (current-seconds))
				 (changed    #t)
				 (last-sdat  "not this"))
                        (begin ;; let ((sdat #f))
			  (thread-sleep! 0.01)
			  (debug:print-info 0 *default-log-port* "Waiting for server alive signature")
                          (mutex-lock! *heartbeat-mutex*)
                          (set! sdat *server-info*)
                          (mutex-unlock! *heartbeat-mutex*)
                          (if (and sdat
				   (not changed)

				      (debug:print-error 0 *default-log-port* "transport appears to have died, exiting server")
                                      (common:save-pkt `((action . died)
                                                         (T      . server)
                                                         (pid    . ,(current-process-id))
                                                         (ipaddr . ,(car sdat))
                                                         (port   . ,(cadr sdat))
                                                         (msg    . "Transport died?"))
						       *configdat* #t)
				      (exit))
				    (loop start-time
					  (equal? sdat last-sdat)
					  sdat)))))))
	 (iface       (car server-info))
         (port        (cadr server-info))
         (last-access 0)
	 (server-timeout (server:expiration-timeout))
	 (server-going  #f)
	 (server-log-file (args:get-arg "-log"))) ;; always set when we are a server

    (with-output-to-file started-file (lambda ()(print (current-process-id))))

		      (map args:get-arg args)))))

(define (args:get-arg-from ht arg . default)
  (if (null? default)
      (hash-table-ref/default ht arg #f)
      (hash-table-ref/default ht arg (car default))))

#;(define (args:usage . args)
  (if (> (length args) 0)
      (apply print "ERROR: " args))
  (if (string? help)
      (print help)
      (print "Usage: " (car (argv)) " ... "))
  (exit 0))

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

(include "megatest-fossil-hash.scm")
(include "megatest-version.scm")

;; globals
(define *writes-total-delay* 0)
(define *exit-started* #f)

(define *tim* (iup:timer))

;; The watchdog is to keep an eye on things like db sync etc.
;;

;; TODO: for multiple areas, we will have multiple watchdogs; and multiple threads to manage
(define *watchdog* (make-thread
		    (lambda ()
		      (handle-exceptions
			  exn
			  (begin
			    (print-call-chain)
			    (print " message: " ((condition-property-accessor 'exn 'message) exn)))
			(common:watchdog)))
		    "Watchdog thread"))

(include "api-inc.scm")
(include "archive-inc.scm")
(include "client-inc.scm")
(include "common-inc.scm")
(include "configf-inc.scm")
(include "db-inc.scm")
(include "dcommon-inc.scm")
(include "dashboard-tests-inc.scm")
(include "env-inc.scm")
(include "ezsteps-inc.scm")
(include "gutils-inc.scm")
(include "http-transport-inc.scm")
(include "items-inc.scm")
(include "keys-inc.scm")
(include "launch-inc.scm")
(include "margs-inc.scm")
(include "mt-inc.scm")
(include "ods-inc.scm")
(include "pgdb-inc.scm")
(include "portlogger-inc.scm")
(include "process-inc.scm")
(include "rmt-inc.scm")
(include "runconfig-inc.scm")
(include "runs-inc.scm")
(include "server-inc.scm")
(include "subrun-inc.scm")
(include "tasks-inc.scm")

	  (exit 1))))

;; immediately set MT_TARGET if -reqtarg or -target are available
;;
(let ((targ (or (args:get-arg "-reqtarg")(args:get-arg "-target"))))
  (if targ (setenv "MT_TARGET" targ)))












;; watchdog was here


;;(if (not (args:get-arg "-server"))
;;    (thread-start! *watchdog*)) ;; if starting a server; wait till we get to running state before kicking off watchdog
(let* ((no-watchdog-args
       '("-list-runs"
         "-testdata-csv"
         "-list-servers"

;; Copyright 2006-2014, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     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/>.
;;

;; lsof -i

(define (portlogger:open-db fname)
  (let* ((avail    (tasks:wait-on-journal fname 5 remove: #t)) ;; wait up to about 10 seconds for the journal to go away
	 (exists   (common:file-exists? fname))
	 (db       (if avail 
		       (sqlite3:open-database fname)
		       (begin
			 (system (conc "rm -f " fname))
			 (sqlite3:open-database fname))))
	 (handler  (sqlite3:make-busy-timeout 136000))
	 (canwrite (file-write-access? fname)))
	 ;; (db-init  (lambda ()
	 ;;             (sqlite3:execute 
	 ;;              db
	 ;;              "CREATE TABLE IF NOT EXISTS ports (
         ;;                 port INTEGER PRIMARY KEY,
         ;;                 state TEXT DEFAULT 'not-used',
         ;;                 fail_count INTEGER DEFAULT 0,
         ;;                 update_time TIMESTAMP DEFAULT (strftime('%s','now')) );"))))
    (sqlite3:set-busy-handler! db handler)
    (db:set-sync db) ;; (sqlite3:execute db "PRAGMA synchronous = 0;")
    ;; (if (not exists) ;; needed with IF NOT EXISTS?
    (sqlite3:execute 
     db
     "CREATE TABLE IF NOT EXISTS ports (
            port INTEGER PRIMARY KEY,
            state TEXT DEFAULT 'not-used',
            fail_count INTEGER DEFAULT 0,
            update_time TIMESTAMP DEFAULT (strftime('%s','now')) );")
    db))

(define (portlogger:open-run-close proc . params)
  (let* ((fname  (conc "/tmp/." (current-user-name) "-portlogger.db"))
	 (avail  (tasks:wait-on-journal fname 10))) ;; wait up to about 10 seconds for the journal to go away
    (handle-exceptions
     exn
     (begin
       ;; (release-dot-lock fname)
       (debug:print-error 0 *default-log-port* "portlogger:open-run-close failed. " proc " " params)
       (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
       (debug:print 5 *default-log-port* "exn=" (condition->list exn))
       (if (common:file-exists? fname)(delete-file fname)) ;; brutally get rid of it
       (print-call-chain (current-error-port)))
     (let* (;; (lock   (obtain-dot-lock fname 2 9 10))
	    (db     (portlogger:open-db fname))
	    (res    (apply proc db params)))
       (sqlite3:finalize! db)
       ;; (release-dot-lock fname)
       res))))

;; (fold-row PROC INIT DATABASE SQL . PARAMETERS) 
(define (portlogger:take-port db portnum)
  (let* ((qry1 (sqlite3:prepare db "INSERT INTO ports (port,state) VALUES (?,?);"))
	 (qry2 (sqlite3:prepare db "UPDATE ports SET state=?,update_time=strftime('%s','now') WHERE port=?;"))
	 (qry3 (sqlite3:prepare db "SELECT state FROM ports WHERE port=?;"))
	 (res  (sqlite3:with-transaction
		db
		(lambda ()
		  ;; (fold-row (lambda (var curr) (or var curr)) #f db "SELECT var FROM foo WHERE id=100;")
		  (let* ((curr #f)
			 (res  #f))
		    (set! curr (sqlite3:fold-row
				(lambda (var curr)
				  (or curr var curr))
				"not-tried"
				qry3
				portnum))
		    ;; (print "curr=" curr)
		    (set! res (case (string->symbol curr)
				((released)  (sqlite3:execute qry2 "taken" portnum) 'taken)
				((not-tried) (sqlite3:execute qry1 portnum "taken") 'taken)
				((taken)                                            'already-taken)
				((failed)                                           'failed)
				(else                                               'error)))
		    ;; (print "res=" res)
		    res)))))
    (sqlite3:finalize! qry1)
    (sqlite3:finalize! qry2)
    (sqlite3:finalize! qry3)
    res))

(define (portlogger:get-prev-used-port db)
  (handle-exceptions
      exn
      (begin
	(debug:print 0 *default-log-port* "EXCEPTION: portlogger database probably overloaded or unreadable. If you see this message again remove /tmp/.$USER-portlogger.db")
	(debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	(debug:print 5 *default-log-port* "exn=" (condition->list exn))
	(print-call-chain (current-error-port))
	(debug:print 0 *default-log-port* "Continuing anyway.")
	#f)
    (sqlite3:fold-row
     (lambda (var curr)
       (or curr var curr))
     #f
     db
     "SELECT (port) FROM ports WHERE state='released' LIMIT 1;")))

(define (portlogger:find-port db)
  (let* ((lowport (let ((val (configf:lookup *configdat* "server" "lowport")))
		    (if (and val 
			     (string->number val))
			(string->number val)
			32768)))
	 (portnum (or (portlogger:get-prev-used-port db)
		      (+ lowport ;; top of registered ports is 49152 but lets use ports in the registered range
			 (random (- 64000 lowport))))))
    (handle-exceptions
     exn
     (begin
       (debug:print 0 *default-log-port* "EXCEPTION: portlogger database probably overloaded or unreadable. If you see this message again remove /tmp/.$USER-portlogger.db")
       (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
       (debug:print 5 *default-log-port* "exn=" (condition->list exn))
       (print-call-chain (current-error-port))
       (debug:print 0 *default-log-port* "Continuing anyway."))
     (portlogger:take-port db portnum))
    portnum))

;; set port to "released", "failed" etc.
;; 
(define (portlogger:set-port db portnum value)
  (sqlite3:execute db "UPDATE ports SET state=?,update_time=strftime('%s','now') WHERE port=?;" value portnum))

;; set port to failed (attempted to take but got error)
;;
(define (portlogger:set-failed db portnum)
  (sqlite3:execute db "UPDATE ports SET state='failed',fail_count=fail_count+1,update_time=strftime('%s','now') WHERE port=?;" portnum))

;;======================================================================
;; MAIN
;;======================================================================

(define (portlogger:main . args)
  (let* ((dbfname (conc "/tmp/." (current-user-name) "-portlogger.db"))
	 (db      (portlogger:open-db dbfname))
	 (numargs (length args))
	 (result  
	  (handle-exceptions
	   exn
	   (begin
	     (debug:print 0 *default-log-port* "EXCEPTION: portlogger database at " dbfname " probably overloaded or unreadable. Try removing it.")
	     (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))
	     #f)
	   (case (string->symbol (car args)) ;; commands with two or more params
	     ((take)(portlogger:take-port db (string->number (cadr args))))
	     ((find)(portlogger:find-port db))
	     ((set) (let ((port  (cadr  args))
			  (state (caddr args)))
		      (portlogger:set-port db 
					   (if (number? port) port (string->number port))
					   state)
		      state))
	     ((failed)(portlogger:set-failed db (string->number (cadr args))) 'failed)))))
    (sqlite3:finalize! db)
    result))
     
;; (print (apply portlogger:main (cdr (argv))))