Megatest

; Copyright 2006-2017, Matthew Welland.
;; 
;;  This program is made available under the GNU GPL version 2.0 or
;;  greater. See the accompanying file COPYING for details.
;; 
;;  This program is distributed WITHOUT ANY WARRANTY; without even the
;;  implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
;;  PURPOSE.

;; (include "common.scm")
;; (include "megatest-version.scm")

;; fake out readline usage of toplevel-command
(define (toplevel-command . a) #f)

(use srfi-1 posix srfi-69 readline ;;  regex regex-case srfi-69 apropos json http-client directory-utils rpc typed-records;; (srfi 18) extras)
     srfi-18 extras format pkts regex regex-case
     (prefix dbi dbi:)
     nanomsg)

(declare (uses common))
(declare (uses megatest-version))
(declare (uses margs))
(declare (uses configf))
;; (declare (uses rmt))

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

(require-library stml)

;; stuff for the mapper and checker functions
;;
(define *target-mappers*  (make-hash-table)) 
(define *runname-mappers* (make-hash-table)) 
(define *area-checkers*   (make-hash-table)) 

;; helpers for mappers/checkers
(define (add-target-mapper name proc)
  (hash-table-set! *target-mappers* name proc))
(define (add-runname-mapper name proc)
  (hash-table-set! *runname-mappers* name proc))
(define (add-area-checker name proc)
  (hash-table-set! *area-checkers* name proc))

;; given a runkey, xlatr-key and other info return one of the following:
;;   list of targets, null list to skip processing
;;   
(define (map-targets mtconf aval-alist runkey area contour #!key (xlatr-key-in #f))
  (let* ((xlatr-key (or xlatr-key-in
                        (conf-get/default mtconf aval-alist 'targtrans)))
         (proc      (hash-table-ref/default *target-mappers* xlatr-key #f)))
    (if proc
        (begin
          (print "Using target mapper: " xlatr-key)
          (handle-exceptions
           exn
           (begin
             (print "FAILED TO RUN TARGET MAPPER FOR " area ", called " xlatr-key)
             (print "   function is: " (hash-table-ref/default *target-mappers* xlatr-key #f ) )
             (print " message: " ((condition-property-accessor 'exn 'message) exn))
             runkey)
           (proc runkey area contour)))
        (begin
          (if xlatr-key 
              (print "ERROR: Failed to find named target translator " xlatr-key ", using original target."))
          `(,runkey))))) ;; no proc then use runkey

;; given mtconf and areaconf extract a translator/filter, first look at areaconf
;; then if not found look at default
;;
(define (conf-get/default mtconf areaconf keyname #!key (default #f))
  (let ((res (or (alist-ref keyname areaconf)
                 (configf:lookup mtconf "default" (conc keyname))
                 default)))
    (if res
        (string->symbol res)
        res)))
  
;; this needs some thought regarding security implications.
;;
;;   i. Check that owner of the file and calling user are same?
;;  ii. Check that we are in a legal megatest area?
;; iii. Have some form of authentication or record of the md5sum or similar of the file?
;;  iv. Use compiled version in preference to .scm version. Thus there is a manual "blessing"
;;      required to use .mtutil.scm.
;;
(if (common:file-exists? "megatest.config")
    (if (common:file-exists? ".mtutil.so")
	(load ".mtutil.so")
	(if (common:file-exists? ".mtutil.scm")
            (load ".mtutil.scm"))))

;; Disabled help items
;;  -rollup                 : (currently disabled) fill run (set by :runname)  with latest test(s)
;;                            from prior runs with same keys
;; Contour actions
;;    import                  : import pkts
;;    dispatch                : dispatch queued run jobs from imported pkts
;;    rungen                  : look at input sense list in [rungen] and generate run pkts

(define help (conc "
mtutil, part of the Megatest tool suite, documentation at http://www.kiatoa.com/fossils/megatest
  version " megatest-version "
  license GPL, Copyright Matt Welland 2006-2017

Usage: mtutil action [options]
  -h                         : this help
  -manual                    : show the Megatest user manual
  -version                   : print megatest version (currently " megatest-version ")
			     
Actions:		     
   run                       : initiate runs
   remove                    : remove runs
   rerun                     : register action for processing
   set-ss                    : set state/status
   archive                   : compress and move test data to archive disk
   kill                      : stop tests or entire runs
   db                        : database utilities
   areas, contours, setup    : show areas, contours or setup section from megatest.config
   gendot                    : generate a graphviz dot file from pkts.

Contour actions:
   process                   : runs import, rungen and dispatch 
			     
Trigger propagation actions:
   tsend a=b,c=d...          : send trigger info to all recpients in the [listeners] section
   tlisten -port N           : listen for trigger info on port N
			     
Selectors 		     
  -immediate                 : apply this action immediately, default is to queue up actions
  -area areapatt1,area2...   : apply this action only to the specified areas
  -target key1/key2/...      : run for key1, key2, etc.
  -test-patt p1/p2,p3/...    : % is wildcard
  -run-name                  : required, name for this particular test run
  -contour contourname       : run all targets for contourname, requires -run-name, -target
  -state-status c/p,c/f      : Specify a list of state and status patterns
  -tag-expr tag1,tag2%,..    : select tests with tags matching expression
  -mode-patt key             : load testpatt from <key> in runconfigs instead of default TESTPATT
                               if -testpatt and -tagexpr are not specified
  -new state/status          : specify new state/status for set-ss
			     
Misc 			     
  -start-dir path            : switch to this directory before running mtutil
  -set-vars V1=1,V2=2        : Add environment variables to a run NB// these are
                                   overwritten by values set in config files.
  -log logfile               : send stdout and stderr to logfile
  -repl                      : start a repl (useful for extending megatest)
  -load file.scm             : load and run file.scm
  -debug N|N,M,O...          : enable debug messages 0-N or N and M and O ...
			     
Utility			     
 db pgschema                 : emit postgresql schema; do \"mtutil db pgschema | psql -d mydb\"

Examples:

# Start a megatest run in the area \"mytests\"
mtutil run -area mytests -target v1.63/aa3e -mode-patt MYPATT -tag-expr quick

# Start a contour
mtutil run -contour quick -target v1.63/aa3e 

Called as " (string-intersperse (argv) " ") "
Version " megatest-version ", built from " megatest-fossil-hash ))

;; args and pkt key specs
;;
(define *arg-keys*
  ;; used keys
  ;;    a  - action
  '(
    ("-area"            . G) ;; maps to group
    ("-contour"         . c)
    ("-append-config"   . d)
    ("-state"           . e)
    ("-item-patt"       . i)
    ("-sync-to"         . k)
    ("-new"             . l) ;; l (see below) is new-ss
    ("-run-name"        . n)
    ("-mode-patt"       . o)
    ("-test-patt"       . p)  ;; idea, enhance margs ("-test-patt" "-testpatt") => yields one value in "-test-patt"
    ("-status"          . s)
    ("-target"          . t)
    ("-tag-expr"        . x)
    ;; misc
    ("-debug"           . #f)  ;; for *verbosity* > 2
    ("-load"            . #f)  ;; load and exectute a scheme file
    ("-log"             . #f)
    ("-msg"             . M)
    ("-start-dir"       . S)
    ("-set-vars"        . v)
    ("-config"          . r)
    ))
(define *switch-keys*
  '(
    ("-h"               . #f)
    ("-help"            . #f)
    ("--help"           . #f)
    ("-manual"          . #f)

    ))

;; alist to map actions to old megatest commands
(define *action-keys*
  '((run         . "-run")
    (sync        . "")
    (archive     . "-archive")
    (set-ss      . "-set-state-status")
    (remove      . "-remove-runs")))

;; Card types:
;;
;; A action
;; U username (Unix)
;; D timestamp
;; T card type

;; utilitarian alist for standard cards
;;
(define *additional-cards*
  '(
    ;; Standard Cards
    (A  . action    )
    (D  . timestamp )
    (T  . cardtype  )
    (U  . user      ) ;; username
    (Z  . shar1sum  )

    ;; Extras
    (a  . runkey    ) ;; needed for matching up pkts with target derived from runkey
    ;; (l  . new-ss    ) ;; new state/status
    ))

;; inlst is an alternative input
;;
(define (lookup-param-by-key key #!key (inlst #f))
  (fold (lambda (a res)
	  (if (eq? (cdr a) key)
	      (car a)
	      res))
	#f
	(or inlst *arg-keys*)))

(define (lookup-action-by-key key)
  (alist-ref (string->symbol key) *action-keys*))

;;======================================================================
;;  U T I L S
;;======================================================================

;; given a mtutil param, return the old megatest equivalent
;;
(define (megatest-param->mtutil-param param)
  (let* ((mapping-alist (common:get-param-mapping flavor: 'switch-symbol)))
    (alist-ref (string->symbol param) mapping-alist eq? param)





    param))

(define (val->alist val)
  (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)

    (handle-exceptions
	exn
	(print "ERROR: failed to create directory " dest-dir " message: " ((condition-property-accessor 'exn 'message) exn))
      (create-directory dest-dir #t))
    (handle-exceptions
	exn
	(print "ERROR: failed to clone or sync 1ossil " url " message: " ((condition-property-accessor 'exn 'message) exn))
      (if (common:file-exists? targ-file)
	  (system (conc "fossil pull --once " url " -R " targ-file))
	  (system (conc "fossil clone " url " " targ-file))
	  ))))

(define (fossil:last-change-node-and-time fossils-dir fossil-name branch)
  (let* ((fossil-file   (conc fossils-dir "/" fossil-name))
	 (timeline-port (if (file-read-access? fossil-file)

	  (else ;; have some unrecognised junk? spit out error message
	   (print "ERROR: fossil timeline returned unrecognisable junk \"" inl "\"")
	   (loop (get-line) date node time))))
       (else ;; no more datat and last node on branch not found
	(close-input-port timeline-port)
	(values  (common:date-time->seconds (conc date " " time)) node))))))


;;======================================================================
;; GLOBALS
;;======================================================================








;; process args
(define *action* (if (> (length (argv)) 1)
		     (cadr (argv))
		     #f))
(define remargs (args:get-args 
		 (if *action* (cdr (argv)) (argv)) ;; args:get-args dumps first in argv list (the program name)
		 (map car *arg-keys*)

;; Add args that use remargs here
;;
(if (and (not (null? remargs))
	 (not (or
	       (args:get-arg "-runstep")
	       (args:get-arg "-envcap")
	       (args:get-arg "-envdelta")
	       (member *action* '("db" "tsend" "tlisten"))   ;; very loose checks on db and tsend/listen
	       (equal? *action* "show")    ;; just keep going if list
	       )))
    (debug:print-error 0 *default-log-port* "Unrecognised arguments: " (string-intersperse (if (list? remargs) remargs (argv))  " ")))

(if (or (args:any? "-h" "help" "-help" "--help")
	(member *action* '("-h" "-help" "--help" "help")))
    (begin
      (print help)
      (exit 1)))

;;======================================================================
;; Nanomsg transport
;;======================================================================

(define-inline (encode data)

  (with-output-to-string



    (lambda ()





      (write data))))

(define-inline (decode data)
  (with-input-from-string
      data
    (lambda ()
      (read))))


(define (is-port-in-use port-num)
 (let* ((ret #f))
     (let-values (((inp oup pid)
                (process "netstat" (list  "-tulpn" ))))
      (let loop ((inl (read-line inp)))
        (if (not (eof-object? inl))
            (begin 
                (if (string-search (regexp (conc ":" port-num)) inl)
                 (begin
                 ;(print "Output: "  inl)
                  (set! ret  #t))
                 (loop (read-line inp)))))))
ret))

;;start a server, returns the connection
;;
(define (start-nn-server portnum )
  (let ((rep (nn-socket 'rep)))
    (handle-exceptions
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       (print "ERROR: Failed to start server \"" emsg "\"")
       (exit 1))
      
     (nn-bind rep (conc "tcp://*:" portnum)))
    rep))

;; open connection to server, send message, close connection

;;
(define (open-send-close-nn host-port msg #!key (timeout 3)) ;; default timeout is 3 seconds
  (let ((req  (nn-socket 'req))
        (uri  (conc "tcp://" host-port))
        (res  #f)) 
    (handle-exceptions
     exn
     (let ((emsg ((condition-property-accessor 'exn 'message) exn)))
       (print "ERROR: Failed to connect/send to " uri " message was \"" emsg "\"")
       #f)
     (nn-connect req uri)
     (nn-send req msg)
     ;; NEED timer here!
     (let* ((th1  (make-thread (lambda ()
                                 (let ((resp (nn-recv req)))
                                   (nn-close req)
                                   (set! res (if (equal? resp "ok")
                                                 #t
                                                 #f))))

                               "recv thread"))

            (th2 (make-thread (lambda ()


                                (thread-sleep! timeout)


                                (thread-terminate! th1))
                             "timer thread")))

       (thread-start! th1)


       (thread-start! th2)
       (thread-join! th1)
       res))))



;;======================================================================
;; Runs
;;======================================================================

;; make a runname
;;
(define (make-runname pre post)
 (time->string
  (seconds->local-time (current-seconds)) "%Yw%V.%w-%H%M"))

;; collect, translate, collate and assemble a pkt from the command-line
;;
;; sched => force the run start time to be recorded as sched Unix
;; epoch. This aligns times properly for triggers in some cases.
;;
;;  extra-dat format is ( 'x xval 'y yval .... )
;;
(define (command-line->pkt action args-alist sched-in #!key (extra-dat '())(area-path #f)(new-ss #f))
  (let* ((sched     (cond
		     ((vector? sched-in)(local-time->seconds sched-in)) ;; we recieved a time
		     ((number? sched-in) sched-in)
		     (else     (current-seconds))))
	 (args-data (if args-alist
			(if (hash-table? args-alist) ;; seriously?
			    (hash-table->alist args-alist)
			    args-alist)
			(hash-table->alist args:arg-hash))) ;; if no args-alist then we assume this is a call driven directly by commandline
	 (alldat    (apply append
			   (list 'A action
				 'U (current-user-name)
				 'D sched)
			   (if area-path
			       (list 'S area-path) ;; the area-path is mapped to the start-dir
			       '())
                           (if (list? extra-dat)
			       extra-dat
			       (begin
				 (debug:print 0 *default-log-port* "ERROR: command-line->pkt received bad extra-dat " extra-dat)
				 '()))
			   (map (lambda (x)
				  (let* ((param (car x))
					 (value (cdr x))
					 (pmeta (assoc param *arg-keys*))    ;; translate the card key to a megatest switch or parameter
					 (smeta (assoc param *switch-keys*)) ;; first lookup the key in arg-keys or switch-keys
					 (meta  (if (or pmeta smeta)
						    (cdr (or pmeta smeta))   ;; found it?
						    #f)))
				    (if (or pmeta smeta)                     ;; construct the switch/param pair.
					(list meta value)
					'())))
				(filter cdr args-data)))))
    (print  "Alldat: " alldat
	    " args-data: " args-data)
    (add-z-card
     (apply construct-sdat alldat))))

(define (simple-setup start-dir-in)
  (let* ((start-dir (or start-dir-in "."))
	 (mtconfig  (or (args:get-arg "-config") "megatest.config"))
	 (mtconfdat (find-and-read-config        ;; NB// sets MT_RUN_AREA_HOME as side effect
		     mtconfig
		     ;; environ-patt: "env-override"
		     given-toppath: start-dir
		     ;; pathenvvar: "MT_RUN_AREA_HOME"
		     ))
	 (mtconf    (if mtconfdat (car mtconfdat) #f)))
    ;; we set some dynamic data in a section called "scratchdata"
    (if mtconf
	(begin
	  (configf:section-var-set! mtconf "scratchdat" "toppath" start-dir)))
    ;; (print "TOPPATH: " (configf:lookup mtconf "scratchdat" "toppath"))
    mtconfdat))


;; NEED TIMESTAMP ON PKTS for efficient loading of packets into db.


;; make a run request pkt from basic data, this seriously needs to be refactored
;;   i. Take the code that builds the info to submit to create-run-pkt and have it
;;      generate the pkt keys directly.
;;  ii. Pass the pkt keys and values to this proc and go from there.
;; iii. Maybe have an abstraction alist with meaningful names for the pkt keys
;;
;; Override the run start time record with sched. Usually #f is fine.
;; 
(define (create-run-pkt mtconf action area runkey target runname mode-patt 
                        tag-expr pktsdir reason contour sched dbdest append-conf
                        runtrans)
  (let* ((good-val   (lambda (inval)(and inval (string? inval)(not (string-null? inval)))))
	 (area-dat   (val->alist (or (configf:lookup mtconf "areas" area) "")))
	 (area-path  (alist-ref 'path      area-dat))
	 ;; (area-xlatr (alist-ref 'targtrans area-dat))
         ;; (xlatr-key  (if area-xlatr (string->symbol area-xlatr) #f))
         (new-runname (let* ((callname (if (string? runtrans)(string->symbol runtrans) #f))
			     (mapper   (if callname (hash-table-ref/default *runname-mappers* callname #f) #f)))
			;; (print "callname=" callname " runtrans=" runtrans " mapper=" mapper)
			(if (and callname
				 (not (equal? callname "auto"))
				 (not mapper))
			    (print "No mapper " callname " for area " area " using " callname " as the runname"))
			(if mapper
			    (handle-exceptions
				exn
				(begin
				  (print-call-chain)
				  (print "FAILED TO RUN RUNNAME MAPPER " callname " FOR AREA " area)
				  (print " message: " ((condition-property-accessor 'exn 'message) exn))
				  runname)
			      (print "(mapper " (string-intersperse (list runkey runname area area-path reason contour mode-patt) ", ") ")")
			      (mapper runkey runname area area-path reason contour mode-patt))
			    (case callname
			      ((auto) runname)
			      (else   runtrans)))))
	 (new-target     target) ;; I believe we will want target manipulation here .. (map-targets xlatr-key runkey area contour))

















	 (actual-action  (if action
			     (if (equal? action "sync-prepend")
				 "sync"
				 action)
			     "run"))) ;; this has gotten a bit ugly. Need a function to handle actions processing.
    ;; some hacks to remove switches not needed in certain cases
    (case (string->symbol (or action "run"))
      ((sync sync-prepend)
       (set! new-target #f)
       (set! runame     #f)))
    ;; (print "area-path: " area-path " orig-target: " runkey " new-target: " new-target)
    (let-values (((uuid pkt)
		  (command-line->pkt
		   actual-action
		   (append 
		    `(("-start-dir"  . ,area-path)
		      ("-msg"        . ,reason)
		      ("-contour"    . ,contour))

			'())
		    (if (or (not action)
			    (equal? action "run"))
			`(("-preclean"  . " ")
			  ("-rerun-all" . " "))      ;; if run we *always* want preclean set, use single space as placeholder
			'())
		    )
		   sched
                   extra-dat: `(a ,runkey)  ;; we need the run key for marking the run as launched
                   )))
      (with-output-to-file
	  (conc pktsdir "/" uuid ".pkt")
	(lambda ()
	  (print pkt))))))

;; look for areas=a1,a2,a3 OR areafn=somefuncname
;;
(define (val-alist->areas val-alist)
  (let ((areas-string   (alist-ref 'areas  val-alist))
	(areas-procname (alist-ref 'areafn val-alist)))
    (if areas-procname ;; areas-procname take precedence
	areas-procname
	(string-split (or areas-string "") ","))))

;; area   - the current area under consideration
;; areas  - the list of allowed areas from the contour spec -OR-
;;          if it is a string then it is the function to use to
;;          lookup in *area-checkers*
;;
(define (area-allowed? area areas runkey contour mode-patt)
  (cond
   ((not areas) #t) ;; no spec
   ((string? areas) ;; 
    (let ((check-fn (hash-table-ref/default *area-checkers* (string->symbol areas) #f)))
      (if check-fn
	  (check-fn area runkey contour mode-patt)
	  #f)))
   ((list? areas)(member area areas))
   (else #f))) ;; shouldn't get here 

;; (use trace)(trace create-run-pkt)

;; collect all needed data and create run pkts for contours with changed inputs
;;
(define (generate-run-pkts mtconf toppath)
  (let ((std-runname (conc "sched"  (time->string (seconds->local-time (current-seconds)) "%M%H%d"))))
    (common:with-queue-db
     mtconf
     (lambda (pktsdirs pktsdir pdb)
       (let* ((rgconfdat (find-and-read-config (conc toppath "/runconfigs.config")))
	      (rgconf    (car rgconfdat))
	      (all-areas (map car (configf:get-section mtconf "areas")))
	      (contours  (configf:get-section mtconf "contours"))
	      (torun     (make-hash-table)) ;; target => ( ... info ... )

			(ruletype   (if (> len-key 1)(cadr keyparts) #f))
			(action     (if (> len-key 2)(caddr keyparts) #f))
			(optional   (if (> len-key 3)(cadddr keyparts) #f))
			;; (val-list   (string-split-fields ";\\s*" val #:infix)) ;; (string-split val)) ;; runname-rule params
			(val-alist  (val->alist val))
			(runname    (make-runname "" ""))
			(runtrans   (alist-ref 'runtrans val-alist))

			;; these may or may not be defined and not all are used in each handler type in the case below
			(run-name   (alist-ref 'run-name val-alist))
			(target     (alist-ref 'target   val-alist))
			(crontab    (alist-ref 'cron     val-alist))
			(areas      (val-alist->areas    val-alist)) ;; areas can be a single string (a reference to call an areas function), or a list of area names.
			(dbdest     (alist-ref 'dbdest   val-alist))
			(appendconf (alist-ref 'appendconf val-alist))
			(file-globs (alist-ref 'glob val-alist))
			
			(runstarts  (find-pkts pdb '(runstart) `((o . ,contour)
								 (t . ,runkey))))
			(rspkts     (common:get-pkt-alists runstarts))
			;; starttimes is for run start times and is used to know when the last run was launched
			(starttimes (common:get-pkt-times rspkts)) ;; sort by age (youngest first) and delete duplicates by target
			(last-run   (if (null? starttimes) ;; if '() then it has never been run, else get the max
					0
					(apply max (map cdr starttimes))))
			;; synctimes is for figuring out the last time a sync was done
			(syncstarts (find-pkts pdb '(syncstart) '())) ;; no qualifiers, a sync does all tarets etc.
			(sspkts       (common:get-pkt-alists syncstarts))
			(synctimes    (common:get-pkt-times  sspkts))
			(last-sync  (if (null? synctimes) ;; if '() then it has never been run, else get the max
					0
					(apply max (map cdr synctimes))))
			)

		   (let ((delta (lambda (x)
				  (round (/ (- (current-seconds) x) 60)))))
		     (print "runkey: " runkey ", ruletype: " ruletype ", action: " action ", last-run: " last-run " time since; last-run: " (delta last-run) ", last-sync: " (delta last-sync)))

		   (print "val-alist=" val-alist " runtrans=" runtrans)
		   
		   ;; look in runstarts for matching runs by target and contour
		   ;; get the timestamp for when that run started and pass it
		   ;; to the rule logic here where "ruletype" will be applied
		   ;; if it comes back "changed" then proceed to register the runs
		   
		   (case (string->symbol (or ruletype "no-such-rule"))

		     ((no-such-rule) (print "ERROR: no such rule for " sense))

		     ;; Handle crontab like rules
		     ;;
		     ((scheduled)
		      (if (not (alist-ref 'cron val-alist)) ;; gotta have cron spec
			  (print "ERROR: bad sense spec \"" (string-intersperse sense " ") "\" params: " val-alist)
			  (let* (


				 ;; (action   (alist-ref 'action   val-alist))
				 (cron-safe-string (string-translate (string-intersperse (string-split crontab) "-") "*" "X"))
				 (runname  std-runname)) ;; (conc "sched" (time->string (seconds->local-time (current-seconds)) "%M%H%d")))))
			    ;; (print "last-run: " last-run " need-run: " need-run)
			    ;; (if need-run
			    (case (string->symbol action)
			      ((sync sync-prepend)
			       (if (common:extended-cron crontab #f last-sync)
				   (push-run-spec torun contour runkey
						  `((message . ,(conc ruletype ":sync-" cron-safe-string))
						    (action  . ,action)
						    (dbdest  . ,dbdest)
						    (append  . ,appendconf)
						    (areas   . ,areas)))))
			      ((run)
			       (if (common:extended-cron crontab #f last-run)
				   (push-run-spec torun contour runkey
						  `((message  . ,(conc ruletype ":" cron-safe-string))
						    (runname  . ,runname)
						    (runtrans . ,runtrans)
						    (action   . ,action)
						    (areas    . ,areas)
						    (target   . ,target)))))
                              ((remove)
                               (push-run-spec torun contour runkey
						  `((message  . ,(conc ruletype ":" cron-safe-string))
						    (runname  . ,runname)
						    (runtrans . ,runtrans)
						    (action   . ,action)
						    (areas    . ,areas)
						    (target   . ,target))))
			      (else
			       (print "ERROR: action \"" action "\" has no scheduled handler")
			       )))))

		     ;; script based sensors
		     ;;
		     ((script)
		      ;; syntax is a little different here. It is a list of commands to run, "scriptname = extra_parameters;scriptname = ..."
		      ;; where scriptname may be repeated multiple times. The script must return unix-epoch of last change, new-target-name and new-run-name
		      ;; the script is called like this:  scriptname contour runkey std-runname action extra_param1 extra_param2 ...
		      (for-each
		       (lambda (cmd)
			 (print "cmd: " cmd)

				      (need-run    (> last-change last-run)))
				 (print "last-run: " last-run " need-run: " need-run)
				 (if need-run
				     (let* ((key-msg    `((message  . ,(conc ruletype ":" message))
							  (runname  . ,runname)
							  (runtrans . ,runtrans)
							  (action   . ,action)
							  (areas    . ,areas)
							  (target   . ,new-target) ;; overriding with result from runing the script
                                                          )))
				       (print "key-msg: " key-msg)
				       (push-run-spec torun contour
						      (if optional  ;; we need to be able to differentiate same contour, different behavior. 
							  (conc runkey ":" optional)  ;; NOTE: NOT COMPLETELY IMPLEMENTED. DO NOT USE
							  runkey)
						      key-msg)))))))
		       val-alist)) ;; iterate over the param split by ;\s*

		     ;; fossil scm based triggers
		     ;;
		     ((fossil)
		      (for-each
		       (lambda (fspec)
			 (print "fspec: " fspec)
			 (let* ((url         (symbol->string (car fspec))) ;; THIS COULD BE TROUBLE. Add option to reading line to return as string.
				(branch      (cdr fspec))
				(url-is-file (string-match "^(/|file:).*$" url))
				(fname       (conc (common:get-signature url) ".fossil"))
				(fdir        (conc "/tmp/" (current-user-name) "/mtutil_cache")))
			   ;; (if (not url-is-file) ;; need to sync first --- for now, clone 'em all.
			   (fossil:clone-or-sync url fname fdir) ;; )
			   (let-values (((datetime node)
					 (fossil:last-change-node-and-time fdir fname branch)))
			     (if (null? starttimes)
				 (push-run-spec torun contour runkey
						`((message  . ,(conc "fossil:" branch "-neverrun"))
						  (runname  . ,(conc runname "-" node))
						  (runtrans . ,runtrans)
						  (areas    . ,areas)
						  ;; (target   . ,runkey)
                                                  ))
				 (if (> datetime last-run) ;; change time is greater than last-run time
				     (push-run-spec torun contour runkey
						    `((message  . ,(conc "fossil:" branch "-" node))
						      (runname  . ,(conc runname "-" node))
						      (runtrans . ,runtrans)
						      (areas    . ,areas)
						      ;; (target   . ,runkey)
                                                      ))))
			     (print "Got datetime=" datetime " node=" node))))
		       val-alist))

		     ;; sensor looking for one or more files newer than reference
		     ;;
		     ((file file-or) ;; one or more files must be newer than the reference

		      (let* ((youngestdat (common:get-youngest (common:bash-glob file-globs)))
			     (youngestmod (car youngestdat)))
			;; (print "youngestmod: " youngestmod " starttimes: " starttimes)
			(if (null? starttimes) ;; this target has never been run
			    (push-run-spec torun contour runkey
					   `((message  . "file:neverrun")
					     (action   . ,action)
					     (runtrans . ,runtrans)
					     ;; (target   . ,runkey)
					     (areas    . ,areas)
					     (runname  . ,runname)))
			;; (for-each
			;;  (lambda (starttime) ;; look at the time the last run was kicked off for this contour
			;;    (if (> youngestmod (cdr starttime))
			;; 	   (begin
			;; 	     (print "starttime younger than youngestmod: " starttime " Youngestmod: " youngestmod)
			    (if (> youngestmod last-run)
				(push-run-spec torun contour runkey
					       `((message  . ,(conc ruletype ":" (cadr youngestdat)))
						 (action   . ,action)
						 ;; (target   . ,runkey)
						 (runtrans . ,runtrans)
						 (areas    . ,areas)
						 (runname  . ,runname)
						 ))))))


		     ;; all globbed files must be newer than the reference
		     ;;
		     ((file-and) ;; all files must be newer than the reference

		      (let* ((youngestdat (common:get-youngest file-globs))
			     (youngestmod (car youngestdat))
			     (success     #t)) ;; any cases of not true, set flag to #f for AND
			;; (print "youngestmod: " youngestmod " starttimes: " starttimes)
			(if (null? starttimes) ;; this target has never been run
			    (push-run-spec torun contour runkey
					   `((message  . "file:neverrun")
					     (runname  . ,runname)
					     (runtrans . ,runtrans)
					     (areas    . ,areas)
					     ;; (target   . ,runkey)
					     (action   . ,action)))
			    ;; NB// I think this is wrong. It should be looking at last-run only.
			    (if (> youngestmod last-run) ;; WAIT!! Shouldn't file-and be looking at the *oldest* file (thus all are younger than ...)
				
				;; 			    (for-each
				;; 			     (lambda (starttime) ;; look at the time the last run was kicked off for this contour
				;; 			       (if (< youngestmod (cdr starttime))
				;; 				   (set! success #f)))
				;; 			     starttimes))
				;; 			(if success
				;; 			    (begin
				;; 			      (print "starttime younger than youngestmod: " starttime " Youngestmod: " youngestmod)
				(push-run-spec torun contour runkey
					       `((message  . ,(conc ruletype ":" (cadr youngestdat)))
						 (runname  . ,runname)
						 (runtrans . ,runtrans)
						 ;; (target   . ,runkey)
						 (areas    . ,areas)
						 (action   . ,action)
						 ))))))
		     (else (print "ERROR: unrecognised rule \"" ruletype)))))
	       keydats))) ;; sense rules
	  (hash-table-keys rgconf))
	 
	 ;; now have to run populated
	 (for-each
	  (lambda (contour)

	    (let* ((cval       (or (configf:lookup mtconf "contours" contour) ""))
		   (cval-alist (val->alist cval))                     ;; BEWARE ... NOT the same val-alist as above!
		   (areas      (val-alist->areas cval-alist))
		   (selector   (alist-ref 'selector cval-alist))
		   (mode-tag   (and selector (string-split-fields "/" selector #:infix)))
		   (mode-patt  (and mode-tag (if (eq? (length mode-tag) 2)(cadr mode-tag) #f)))
		   (tag-expr   (and mode-tag (if (null? mode-tag) #f (car mode-tag)))))
	      (print "contour: " contour " areas=" areas " cval=" cval)
	      (for-each
	       (lambda (runkeydatset) 
		 ;; (print "runkeydatset: ")(pp runkeydatset)
		 (let ((runkey     (car runkeydatset))
		       (runkeydats (cadr runkeydatset)))
		   (for-each
		    (lambda (runkeydat)
		      (for-each
		       (lambda (area)
			 (if (area-allowed? area areas runkey contour mode-patt) ;; is this area to be handled (from areas=a,b,c OR using areafn=abcfn and *area-checks* ...)
                             (let* ((aval       (or (configf:lookup mtconf "areas" area) ""))
                                    (aval-alist (val->alist aval))
                                    (runname    (alist-ref 'runname runkeydat))
                                    (runtrans   (alist-ref 'runtrans runkeydat))
                                    
                                    (reason     (alist-ref 'message runkeydat))
                                    (sched      (alist-ref 'sched   runkeydat))
                                    (action     (alist-ref 'action  runkeydat))
                                    (dbdest     (alist-ref 'dbdest  runkeydat))
                                    (append     (alist-ref 'append  runkeydat))
                                    (targets    (or (alist-ref 'target  runkeydat)
                                                    (map-targets mtconf aval-alist runkey area contour)))) ;; override with target if forced
                               ;; NEED TO EXPAND RUNKEY => ALL TARGETS MAPPED AND THEN FOREACH .... 
                               (for-each
                                (lambda (target)
                                  (print "Creating pkt for runkey=" runkey " target=" target " contour=" contour " area=" area " action=" action " tag-expr=" tag-expr " mode-patt=" mode-patt)
                                  (if (case (or (and action (string->symbol action)) 'noaction)  ;; ensure we have the needed data to run this action
                                        ((noaction)           #f)
                                        ((run)                (and runname reason))
                                        ((sync sync-prepend)  (and reason dbdest))
                                        (else                 #f))
                                      ;; instead of unwrapping the runkeydat alist, pass it directly to create-run-pkt
                                      (create-run-pkt mtconf action area runkey target runname mode-patt
                                                      tag-expr pktsdir reason contour sched dbdest append 
                                                      runtrans) 
                                      (print "ERROR: Missing info to make a " action " call: runkey=" runkey " contour=" contour " area=" area  " tag-expr=" tag-expr " mode-patt=" mode-patt " dbdest=" dbdest)
                                      ))
                                targets))
                             (print "NOTE: skipping " runkeydat " for area \"" area "\", not in " areas)))
                       all-areas))
		    runkeydats)))
	       (let ((res (configf:get-section torun contour))) ;; each contour / target
		 ;; (print "res=" res)
		 res))))
	  (hash-table-keys torun)))))))

(define (pkt->cmdline pkta)
  (let* ((param-mapping-alist (common:get-param-mapping flavor: 'switch-symbol))
         (action        (or (lookup-action-by-key (alist-ref 'A pkta)) "noaction"))
	 (action-param  (case (string->symbol action)
                          ((-set-state-status) (conc (alist-ref 'l pkta) " "))
                          (else ""))))
    (fold (lambda (a res)
	    (let* ((key (car a)) ;; get the key name
		   (val (cdr a))
		   (par (or (lookup-param-by-key key)  ;; need to check also if it is a switch
			    (lookup-param-by-key key inlst: *switch-keys*))))
	      ;; (print "key: " key " val: " val " par: " par)
	      (if par
		  (conc res " " (alist-ref (string->symbol par) param-mapping-alist eq? par) " " val)
		  (if (alist-ref key *additional-cards*) ;; these cards do not translate to parameters or switches
		      res
		      (begin
			(print "ERROR: Unknown key in packet \"" key "\" with value \"" val "\"")
			res)))))
	  (conc "megatest " (if (not (member action '("sync")))
				(conc action " " action-param)
				""))
	  pkta)))

;; (use trace)(trace pkt->cmdline)

(define (write-pkt pktsdir uuid pkt)
  (if pktsdir

		 (handle-exceptions
		     exn
		     #f
		   (create-directory "logs")
		   #t)
		 #t)
	     "logs"
	     "/tmp"))
	(cpuload (alist-ref 'adj-proc-load (common:get-normalized-cpu-load #f)))
	(maxload (string->number (or (configf:lookup mtconf "setup" "maxload")
				     (configf:lookup mtconf "jobtools" "maxload") ;; respect value used by Megatest calls
				     "1.1"))))
    (common:with-queue-db
     mtconf
     (lambda (pktsdirs pktsdir pdb)
       (let* ((rgconfdat (find-and-read-config (conc toppath "/runconfigs.config")))
	      (rgconf    (car rgconfdat))
	      (areas     (configf:get-section mtconf "areas"))
	      (contours  (configf:get-section mtconf "contours"))
	      (pkts      (find-pkts pdb '(cmd) '()))
	      (torun     (make-hash-table)) ;; target => ( ... info ... )
	      (rgentargs (hash-table-keys rgconf))) ;; these are the targets registered for automatically triggering
	 (for-each
	  (lambda (pktdat)
	    (let* ((pkta    (alist-ref 'apkt pktdat))
		   (action  (alist-ref 'A pkta))
		   (cmdline (pkt->cmdline pkta))
		   (uuid    (alist-ref 'Z pkta))
		   (user    (alist-ref 'U pkta))
		   (area    (alist-ref 'G pkta))
		   (logf    (conc logdir "/" uuid "-run.log"))
		   (fullcmd (conc "NBFAKE_LOG=" logf " nbfake " cmdline)))
	      (if (check-access user mtconf action area)
		  (if (and (> cpuload maxload)
			   (member action '("run" "archive"))) ;; do not run archive or run if load is over the specified limit
		      (print "WARNING: cpuload too high, skipping processing of " uuid)
		      (begin
			(print "RUNNING: " fullcmd)
			(system fullcmd) ;; replace with process ...
			(mark-processed pdb (list (alist-ref 'id pktdat)))
			(let-values (((ack-uuid ack-pkt)
				      (add-z-card
				       (construct-sdat 'P uuid
						       'T (case (string->symbol action)
							    ((run) "runstart")
							    ((sync) "syncstart")    ;; example of translating run -> runstart
							    (else   action))
						       'c (alist-ref 'o pkta) ;; THIS IS WRONG! SHOULD BE 'c
						       't (alist-ref 't pkta)))))
			  (write-pkt pktsdir ack-uuid ack-pkt))))
		  (begin ;; access denied! Mark as such
		    (mark-processed pdb (list (alist-ref 'id pktdat)))
		    (let-values (((ack-uuid ack-pkt)
				  (add-z-card
				   (construct-sdat 'P uuid
						   'T "access-denied"
						   'c (alist-ref 'o pkta) ;; THIS IS WRONG! SHOULD BE 'c
						   't (alist-ref 't pkta)))))
		      (write-pkt pktsdir ack-uuid ack-pkt))))))
	  pkts))))))

(define (check-access user mtconf action area)
  ;; NOTE: Need control over defaults. E.g. default might be no access
  (let* ((access-ctrl (hash-table-exists? mtconf "access"))  ;; if there is an access section the default is to REQUIRE enablement/access
	 (access-list (map (lambda (x)
			     (string-split x ":"))
			   (string-split (or (configf:lookup mtconf "access" area) ;; userid:rightstype userid2:rightstype2 ...
					     (if access-ctrl
						 "*:none"  ;; nobody has access by default
						 "*:all")))))
	 (access-types-dat (configf:get-section mtconf "accesstypes")))
    (debug:print 0 *default-log-port* "Checking access in " access-list " with access-ctrl " access-ctrl " for area " area)
    (if access-ctrl
	(let* ((user-access     (or (assoc user access-list)
				    (assoc "*"  access-list)))
	       (access-type     (cadr user-access))
	       (access-types    (let ((res (alist-ref access-type access-types-dat equal?)))
				  (if res (car res) res)))
	       (allowed-actions (string-split (or access-types ""))))
	  (print "Got " allowed-actions " for user " user " where access-types=" access-types " access-type=" access-type)
	  (cond
	   ((and access-types (member action allowed-actions))
	    ;; (print "Access granted for " user " for " action)
	    #t)
	   (else
	    ;; (print "Access denied for " user " for " action)
	    #f))))))

(define (get-pkts-dir mtconf)
  (let ((pktsdirs  (configf:lookup mtconf "setup" "pktsdirs"))
	(pktsdir   (if pktsdirs (car (string-split pktsdirs " ")) #f)))
    pktsdir))

(let ((debugcontrolf (conc (get-environment-variable "HOME") "/.mtutilrc")))
  (if (common:file-exists? debugcontrolf)
      (load debugcontrolf)))

(if *action*
    (case (string->symbol *action*)
      ((run remove rerun set-ss archive kill list)
       (let* ((mtconfdat (simple-setup (args:get-arg "-start-dir")))
	      (mtconf    (car mtconfdat))
	      (area      (args:get-arg "-area")) ;; look up the area to dispatch to from [areas] section
	      (areasec   (if area (configf:lookup mtconf "areas" area) #f))
	      (areadat   (if areasec (val->alist areasec) #f))
	      (area-path (if areadat (alist-ref 'path areadat) #f))
	      (pktsdirs  (configf:lookup mtconf "setup" "pktsdirs"))
	      (pktsdir   (if pktsdirs (car (string-split pktsdirs " ")) #f))
	      (adjargs   (hash-table-copy args:arg-hash))
	      (new-ss    (args:get-arg "-new")))
	 ;; check a few things
	 (cond
	  ((and area (not area-path))
	   (print "ERROR: the specified area was not found in the [areas] table. Area name=" area)
	   (exit 1))
	  ((not area)
	   (print "ERROR: no area specified. Use -area <areaname>")
	   (exit 1))
	  (else
	   (let ((user (current-user-name)))
	     (if (check-access user mtconf *action* area);; check rights
		 (print "Access granted for " *action* " action by " user)
		 (begin
		   (print "Access denied for " *action* " action by " user)
		   (exit 1))))))
	 
	 ;; (for-each
	 ;;  (lambda (key)
	 ;;    (if (not (member key *legal-params*))
	 ;; 	(hash-table-delete! adjargs key))) ;; we need to delete any params intended for mtutil
	 ;;  (hash-table-keys adjargs))
	 (let-values (((uuid pkt)
		       (command-line->pkt *action* adjargs #f area-path: area-path new-ss: new-ss)))
	   (write-pkt pktsdir uuid pkt))))
      ((dispatch import rungen process)
       (let* ((mtconfdat (simple-setup (args:get-arg "-start-dir")))
	      (mtconf    (car mtconfdat))
	      (toppath   (configf:lookup mtconf "scratchdat" "toppath")))
	 (case (string->symbol *action*)
	   ((process)  (begin
			 (common:load-pkts-to-db mtconf)
			 (generate-run-pkts mtconf toppath)
			 (common:load-pkts-to-db mtconf)
			 (dispatch-commands mtconf toppath)))
	   ((import)   (common:load-pkts-to-db mtconf)) ;; import pkts
	   ((rungen)   (generate-run-pkts mtconf toppath))
	   ((dispatch) (dispatch-commands mtconf toppath)))))
      ;; misc
      ((show)
       (if (> (length remargs) 0)
	   (let* ((mtconfdat (simple-setup (args:get-arg "-start-dir")))
		  (mtconf    (car mtconfdat))
		  (sect-dat (configf:get-section mtconf (car remargs))))
	     (if sect-dat
		 (for-each
		  (lambda (entry)
		    (if (> (length entry) 1)
			(print (car entry) "   " (cadr entry))
			(print (car entry))))
		  sect-dat)
		 (print "No section \"" (car remargs) "\" found")))
	   (print "ERROR: list requires section parameter; areas, setup or contours")))
      ((gendot)
       (let* ((mtconfdat (simple-setup (args:get-arg "-start-dir")))
	      (mtconf    (car mtconfdat)))
	 (common:load-pkts-to-db mtconf use-lt: #t) ;; need to NOT do this by default ...
	 (common:with-queue-db
	  mtconf
	  (lambda (pktsdirs pktsdir conn)
	    ;;                       pktspec display-fields 
	    (make-report "out.dot" conn
			 '((cmd      . ((parent . P)
					(user   . M)
					(target . t)))
			   (runstart . ((parent . P)
					(target . t)))
			   (runtype . ((parent . P)))) ;; pktspec
			 '(P U t)                                                     ;; 
			 )))))  ;; no ptypes listed (ptypes are strings of pkt types to read from db
      ((db)
       (if (null? remargs)
	   (print "ERROR: missing sub command for db command")
	   (let ((subcmd (car remargs)))
	     (case (string->symbol subcmd)
	       ((pgschema)
		(let* ((install-home (common:get-install-area))
		       (schema-file  (conc install-home "/share/db/mt-pg.sql")))
		  (if (common:file-exists? schema-file)
		      (system (conc "/bin/cat " schema-file)))))
	       ((sqlite3schema)
		(let* ((install-home (common:get-install-area))
		       (schema-file  (conc install-home "/share/db/mt-sqlite3.sql")))
		  (if (common:file-exists? schema-file)
		      (system (conc "/bin/cat " schema-file)))))
	       ((junk)
		(rmt:get-keys))))))
      ((tsend)
       (if (null? remargs)
	   (print "ERROR: missing data to send to trigger listeners")
	   (let* ((msg       (car remargs))
                  (mtconfdat (simple-setup (args:get-arg "-start-dir")))
                  (mtconf    (car mtconfdat))
                  (listeners (configf:get-section mtconf "listeners"))
                  (prev-seen (make-hash-table))) ;; catch duplicates
             (for-each
              (lambda (listener)
                (let ((host-port (car listener))
                      (remdat    (cdr listener)))
                  (print "sending " msg " to " host-port)
                  (open-send-close-nn host-port msg timeout: 2)))
              listeners))))
      ((tlisten)
       (if (null? remargs)
           (print "ERROR: useage for tlisten is \"mtutil tlisten portnum\"")
           (let ((portnum (string->number (car remargs))))
              
             (if (not portnum)
                 (print "ERROR: the portnumber parameter must be a number, you gave: " (car remargs))
                 (begin
                   (if (not (is-port-in-use portnum))  
                       (let* ((rep       (start-nn-server portnum))
                           (mtconfdat (simple-setup (args:get-arg "-start-dir")))
                           (mtconf    (car mtconfdat))
                           (script    (configf:lookup mtconf "listener" "script")))
                           (print "Listening on port " portnum " for messages")
														(set-signal-handler! signal/int  special-signal-handler)
														(set-signal-handler! signal/term special-signal-handler)

                            (let loop ((instr (nn-recv rep)))
                               (print "received " instr ", running \"" script " " instr "\"")
                               (system (conc script " '" instr "'"))
                               (nn-send rep "ok")
                               (loop (nn-recv rep))))
                     (print "ERROR: Port " portnum " already in use. Try another port")))))))
      
      )) ;; the end
             

;; If HTTP_HOST is defined then we must be in the cgi environment
;; so run stml and exit
;;
(if (get-environment-variable "HTTP_HOST")
    (begin
      (stml:main #f)

      ;; (import (prefix sqlite3 sqlite3:)) ;; doesn't work ...
      
      (install-history-file (get-environment-variable "HOME") ".mtutil_history") ;;  [homedir] [filename] [nlines])
      (current-input-port (make-readline-port "mtutil> "))
      (if (args:get-arg "-repl")
	  (repl)
	  (load (args:get-arg "-load")))))

#|
(define mtconf (car (simple-setup #f)))
(define dat (common:with-queue-db mtconf (lambda (conn)(get-pkts conn '()))))
(pp (pkts#flatten-all dat '((cmd . ((parent . P)(url . M)))(runtype . ((parent . P)))) 'id 'group-id 'uuid 'parent 'pkt-type 'pkt 'processed))
|#