Megatest

;;
;; There are two scenarios. 
;;   1. We are a test manager and we received *transport-type* and *runremote* via cmdline
;;   2. We are a run tests, list runs or other interactive process and we must figure out
;;      *transport-type* and *runremote* from the monitor.db
;;
;; client:setup
;;
;; lookup_server, 
;;
(define (client:setup run-id #!key (remaining-tries 3))
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: failed to find megatest.config, exiting")
	    (exit))))
  ;; (push-directory *toppath*) ;; This is probably NOT needed 

	ping_server -> exit [label=alive];
	ping_server -> remove_server_record [label=dead];
	remove_server_record -> set_available;
	set_available -> avail_delay [label="delay 3s"];
	avail_delay -> "first_in_queue?";

	"first_in_queue?" -> set_running [label=yes];
	set_running -> handle_requests;
	"first_in_queue?" -> "server_running?" [label=no];
	set_running -> get_next_port -> handle_requests;
	"first_in_queue?" -> "dead_entry_in_queue?" [label=no];
	"dead_entry_in_queue?" -> "server_running?" [label=no];
	"dead_entry_in_queue?" -> "remove_dead_entries" [label=yes];
	remove_dead_entries -> "server_running?";

	handle_requests -> start_shutdown [label="no traffic"];
	handle_requests -> shutdown_request;
	start_shutdown -> shutdown_delay;
	shutdown_request -> shutdown_delay;
	shutdown_delay -> exit;
	

   exn
   (begin
     (print-error-message exn)
     (if (< portnum 9000)
	 (begin 
	   (debug:print 0 "WARNING: failed to start on portnum: " portnum ", trying next port")
	   (thread-sleep! 0.1)

	   ;; get_next_port goes here

	   (http-transport:try-start-server ipaddrstr (+ portnum 1) server-id))
	 (print "ERROR: Tried and tried but could not start the server")))
   ;; any error in following steps will result in a retry
   (set! *server-info* (list ipaddrstr portnum))
   (open-run-close tasks:server-set-interface-port 
		   tasks:open-db 
		   server-id 

	 (thread-start! th1)
	 (thread-start! th2)
	 (thread-join! th1)
	 (thread-terminate! th2)
	 (debug:print-info 11 "got res=" res)
	 res)))))

;;
;; connect
;;
(define (http-transport:client-connect run-id iface port)
  (let* ((login-res   #f)
	 (uri-dat     (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/ctrl"))))
	 (uri-api-dat (make-request method: 'POST uri: (uri-reference (conc "http://" iface ":" port "/api"))))
	 (serverdat   (list iface port uri-dat uri-api-dat)))
    (hash-table-set! *runremote* run-id serverdat) ;; may or may not be good ...
    (set! login-res (rmt:login run-id))

	 (tdb         (tasks:open-db))
	 (server-timeout (let ((tmo (config-lookup  *configdat* "server" "timeout")))
			   (if (and (string? tmo)
				    (string->number tmo))
			       (* 60 60 (string->number tmo))
			       ;; default to three days
			       (* 3 24 60 60)))))
    ;;
    ;; set_running
    ;;
    (tasks:server-set-state! tdb server-id "running")
    (let loop ((count 0))
      ;; Use this opportunity to sync the inmemdb to db
      (let ((start-time (current-milliseconds))
	    (sync-time  #f)
	    (rem-time   #f))
	(if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))

	  (begin 
	    (debug:print-info 0 "interface changed, refreshing iface and port info")
	    (set! iface (car sdat))
	    (set! port  (cadr sdat))))
      
      ;; NOTE: Get rid of this mechanism! It really is not needed...
      ;; (open-run-close tasks:server-update-heartbeat tasks:open-db spid)

      ;;
      ;; NOT USED ANY MORE
      ;;
      (tasks:server-update-heartbeat tdb server-id)
      ;; (tasks:server-update-heartbeat tdb server-id)
      
      ;; (if ;; (or (> numrunning 0) ;; stay alive for two days after last access

      ;; Transfer *last-db-access* to last-access to use in checking that we are still alive
      (mutex-lock! *heartbeat-mutex*)
      (set! last-access *last-db-access*)
      (mutex-unlock! *heartbeat-mutex*)

      ;; (debug:print 11 "last-access=" last-access ", server-timeout=" server-timeout)
      ;;
      ;; no_traffic
      ;;
      (if (and *server-run*
	       (> (+ last-access server-timeout)
		  (current-seconds)))
	  (begin
	    (debug:print-info 0 "Server continuing, seconds since last db access: " (- (current-seconds) last-access))
	    (loop 0))
	  (begin
	    (debug:print-info 0 "Starting to shutdown the server.")
	    ;; need to delete only *my* server entry (future use)
	    (set! *time-to-exit* #t)
	    (if *inmemdb* (db:sync-touched *inmemdb* force-sync: #t))
	    ;;
	    ;; start_shutdown
	    ;;
	    ( tasks:server-set-state! tdb server-id "shutting-down")
	    (thread-sleep! 5)
	    (debug:print-info 0 "Max cached queries was    " *max-cache-size*)
	    (debug:print-info 0 "Number of cached writes   " *number-of-writes*)
	    (debug:print-info 0 "Average cached write time "
			      (if (eq? *number-of-writes* 0)
				  "n/a (no writes)"

				     *number-non-write-queries*))
			      " ms")
	    (debug:print-info 0 "Server shutdown complete. Exiting")
	    (tasks:server-delete-record! tdb server-id)
	    (exit))))))

;; all routes though here end in exit ...
;;
;; start_server? 
;;
(define (http-transport:launch run-id)
  (set! *run-id*   run-id)
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: cannot find megatest.config, exiting")
	    (exit))))
  (debug:print-info 2 "Starting the standalone server")
  (if (args:get-arg "-daemonize")
      (daemon:ize))
  ;;
  ;; set_available
  ;;
  (let ((server-id (open-run-close tasks:server-lock-slot tasks:open-db run-id)))
    (if (not server-id)
	;;
	;; remove_dead_entry?
	;;
	(begin
	  (debug:print-info 2 "INFO: server pid=" (current-process-id) ", hostname=" (get-host-name) " not starting due to other candidates ahead in start queue")
	  (open-run-close tasks:server-delete-records-for-this-pid tasks:open-db))
	(if *toppath* 
	    (let* ((th2 (make-thread (lambda ()
				       (http-transport:run 
					(if (args:get-arg "-server")

;; S E R V E R
;;======================================================================

;; Call this to start the actual server
;;

;; all routes though here end in exit ...
;;
;; start_server
;;
(define (server:launch transport run-id)
  (if (not *toppath*)
      (if (not (setup-for-run))
	  (begin
	    (debug:print 0 "ERROR: cannot find megatest.config, exiting")
	    (exit))))
  (debug:print-info 2 "Starting server using " transport " transport")

    (tasks:server-am-i-the-server? mdb run-id)))
	
;; register that this server may come online (first to register goes though with the process)
(define (tasks:server-set-available mdb run-id)
  (sqlite3:execute 
   mdb 
   "INSERT INTO servers (pid,hostname,port,pubport,start_time,      priority,state,mt_version,heartbeat,   interface,transport,run_id)
                   VALUES(?, ?,       ?,   ?, strftime('%s','now'), ?,       ?,    ?, strftime('%s','now'),?,        ?,        ?);"
                   VALUES(?, ?,       ?,   ?, strftime('%s','now'), ?,       ?,    ?,-1,?,        ?,        ?);"
   (current-process-id)       ;; pid
   (get-host-name)            ;; hostname
   -1                         ;; port
   -1                         ;; pubport
   (random 1000)              ;; priority (used a tiebreaker on get-available)
   "available"                ;; state
   (common:version-signature) ;; mt_version

#!/mfs/pkgs/chicken/4.8.0.5/bin/csi -nbq

(use regex srfi-69)

(define targs (string-split (cadddr (argv)) ","))
(define files (cddddr (argv)))

(define filedat-defns (make-hash-table))
(define filedat-usages (make-hash-table))

(define defn-rx (regexp "^\\s*\\(define\\s+\\(([^\\s\\)]+).*"))
(define all-regexs (make-hash-table))

(define all-fns '())

(define (print-err . data)
  (with-output-to-port (current-error-port)
    (lambda ()
      (apply print data))))

;; Gather the functions
;;
(for-each 
 (lambda (fname)
   (print-err "Processing file " fname)
   (with-input-from-file fname
     (lambda ()
       (let loop ((inl (read-line)))
	 (if (not (eof-object? inl))
	     (let ((match (string-match defn-rx inl)))
	       (if match 
		   (let ((fnname (cadr match)))
		     ;; (print "   " fnname)
		     (set! all-fns (cons fnname all-fns))
		     (hash-table-set! 
		      filedat-defns 
		      fname
		      (cons fnname (hash-table-ref/default filedat-defns fname '())))
		     ))
	       (loop (read-line))))))))
 files)

;; fill up the regex hash
(print-err "Make the huge regex hash")
(for-each
 (lambda (fnname)
   (hash-table-set! all-regexs fnname (regexp (conc "^(|.*[^a-zA-Z]+)" fnname "([^a-zA-Z]+|)$"))))
 (cons "toplevel" all-fns))

(define breadcrumbs (make-hash-table))

(print-err "Make the quick check regex")
(define have-function-rx (regexp (conc "(" (string-intersperse all-fns "|")
				       ")")))

(define (look-for-all-calls inl fnname)
  (if (string-search have-function-rx inl)
      (let loop ((hed (car all-fns))
		 (tal (cdr all-fns))
		 (res '()))
	(let ((match (string-match (hash-table-ref all-regexs fnname) inl)))
	  (if match
	      (let ((newres (cons hed res)))
		(if (not (null? tal))
		    newres
		    (loop (car tal)
			  (cdr tal)
			  newres)))
	      (if (null? tal)
		  res
		  (loop (car tal)(cdr tal) res)))))
      '()))
  
;; Gather the usages
(print "digraph G {")
(define curr-cluster-num 0)
(define function-calls '())

(for-each
 (lambda (fname)
   (print-err "Processing file " fname)
   (print "subgraph cluster_" curr-cluster-num " {")
   (set! curr-cluster-num (+ curr-cluster-num 1))
   (with-input-from-file fname
     (lambda ()
       (with-output-to-port (current-error-port)
	 (lambda ()
	   (print "Analyzing file " fname)))
       (print "label=\"" fname "\";")
       (let loop ((inl    (read-line))
		  (fnname "toplevel"))
	 (if (not (eof-object? inl))
	     (let ((match (string-match defn-rx inl)))
	       (if match
		   (let ((func-name (cadr match)))
		     (print "\"" func-name "\";")
		     (hash-table-set! breadcrumbs func-name #t)
		     (loop (read-line)
			   func-name))
		   (let ((calls (look-for-all-calls inl fnname)))
		     (if (not (null? calls))
			 (set! function-calls (cons (list fnname calls) function-calls)))
			 ;; (print "Function: " fnname " calls: " calls))
		     (loop (read-line) fnname))))))))
   (print "}"))
 targs)

(for-each 
 (lambda (function-call)
   (let ((fnname (car function-call))
	 (calls  (cadr function-call)))
     (for-each
      (lambda (callname)
	(print (if (hash-table-ref/default breadcrumbs callname #f) "" "// ")
	       "\"" fnname "\" -> \"" callname "\";"))
      calls)))
 function-calls)

(print "}")

;; (exit)