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SHA1: 24be3855502b43e585340409de9b4fca89c0ff92
User & Date: matt on 2021-12-20 18:34:41
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Context
2021-12-20
18:48
wip check-in: a9fa8512c8 user: matt tags: v2.001
18:34
More working check-in: 24be385550 user: matt tags: v2.001
16:26
Basic listing of servers working check-in: 4e80b340f3 user: matt tags: v2.001
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Modified TODO from [426bdbbbe8] to [1f8790aebc].

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

TODO
====



NextSteps



. Remove servermod.scm

WW15
. fill newview matrix with data, filter pipeline gui elements
. improve [script], especially indent handling

WW16
. split db into megatest.db (runs etc.) db/<something>.db








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

TODO
====

Loose ends
----------

. -list-servers not correct
. move *remotedat* into bigdata
. add back server stats on exit (look in rmt:run in rmtmod.scm)


WW15
. fill newview matrix with data, filter pipeline gui elements
. improve [script], especially indent handling

WW16
. split db into megatest.db (runs etc.) db/<something>.db
︙︙

Modified dbmod.scm from [fef313a73a] to [1af1007e9d].

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	      (begin
		(debug:print-info 0 *default-log-port* "Server already removed for "apath", "dbname) ;; at "sinfo ", while trying to register server " host":"port)
		#f) ;; server already deregistered
	      (begin
		(sqlite3:execute db "DELETE FROM servers WHERE apath=? AND dbname=?;" ;; (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
				 ;; host port servkey pid ipaddr
				 apath dbname)
		#;(db:get-server-info dbstruct apath dbname)))))))))


(define (db:get-server-info dbstruct apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (sqlite3:fold-row








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	      (begin
		(debug:print-info 0 *default-log-port* "Server already removed for "apath", "dbname) ;; at "sinfo ", while trying to register server " host":"port)
		#f) ;; server already deregistered
	      (begin
		(sqlite3:execute db "DELETE FROM servers WHERE apath=? AND dbname=?;" ;; (host,port,servkey,pid,ipaddr,apath,dbname) VALUES (?,?,?,?,?,?,?);"
				 ;; host port servkey pid ipaddr
				 apath dbname)
		#;(db:get-server-info dbstruct apath dbname)
		'done))))))))

(define (db:get-server-info dbstruct apath dbname)
  (db:with-db
   dbstruct
   #f #f
   (lambda (db)
     (sqlite3:fold-row
︙︙

Modified megatest.scm from [b3a97379d1] to [89bdcd6c8f].

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	    ;; port INTEGER,
	    ;; servkey TEXT,
	    ;; pid TEXT,
	    ;; ipaddr TEXT,
	    ;; apath TEXT,
	    ;; dbname TEXT,
	    ;; event_time 
     	    (format #t fmtstr "pid" "Interface:port" "age (hms)" "Last mod" "State")
     	    (format #t fmtstr "===" "==============" "=========" "========" "=====")
     	    (for-each ;;  ( mod-time host port start-time pid )
     	     (lambda (server)
     	       (let* ((mtm (any->number (car server)))
     		      (mod (if mtm (- (current-seconds) mtm) "unk"))
     		      (age (- (current-seconds)(or (any->number (list-ref server 3)) (current-seconds))))
     		      (url (conc (cadr server) ":" (caddr server)))
     		      (pid (list-ref server 4))
     		      (alv (if (number? mod)(< mod 10) #f)))
     		 (format #t
     			 fmtstr
     			 pid
     			 url
     			 (seconds->hr-min-sec age)

     			 (seconds->hr-min-sec mod)
     			 (if alv "alive" "dead"))
     		 (if (and alv

     			  (args:get-arg "-kill-servers"))
     		     (begin
     		       (debug:print-info 0 *default-log-port* "Attempting to kill server with pid " pid " !!needs completion!!")
     		       #;(server:kill server)))))
     	     (sort servers (lambda (a b)
     			     (let ((ma (or (any->number (car a)) 9e9))
     				   (mb (or (any->number (car b)) 9e9)))
     			       (> ma mb)))))
     	    ;; (debug:print-info 1 *default-log-port* "Done with listservers")
     	    (set! *didsomething* #t)
     	    (exit))
     	  (exit))))
           ;; must do, would have to add checks to many/all calls below
     
     ;;======================================================================








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	    ;; port INTEGER,
	    ;; servkey TEXT,
	    ;; pid TEXT,
	    ;; ipaddr TEXT,
	    ;; apath TEXT,
	    ;; dbname TEXT,
	    ;; event_time 
     	    (format #t fmtstr "pid" "Interface:port" "State" "dbname" "apath")
     	    (format #t fmtstr "===" "==============" "=====" "======" "=====")
     	    (for-each ;;  ( mod-time host port start-time pid )
     	     (lambda (server)
	       (match-let
		(((id host port servkey pid ipaddr apath dbname event_time) server))




     		(format #t
     			fmtstr
     			pid

     			(conc host":"port)
     			(if (server-ready? host port servkey) "Running" "Dead")
     			dbname ;; (seconds->hr-min-sec mod)

     			apath
			)
     		 (if (args:get-arg "-kill-servers")
     		     (begin
     		       (debug:print-info 0 *default-log-port* "Attempting to kill server with pid " pid " !!needs completion!!")
     		       #;(server:kill server)))))
     	     servers)



     	    ;; (debug:print-info 1 *default-log-port* "Done with listservers")
     	    (set! *didsomething* #t)
     	    (exit))
     	  (exit))))
           ;; must do, would have to add checks to many/all calls below
     
     ;;======================================================================
︙︙

Modified rmtmod.scm from [1621ebeda5] to [3f5d189366].

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	  (if (sqlite3:database? db)
	      (sqlite3:finalize! db)
	      (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
	  (if (sqlite3:database? inmem)
	      (sqlite3:finalize! inmem)
	      (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
	  (debug:print-info 0 *default-log-port* "Finalizing db and inmem complete")
	  (if am-server

	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *server-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock for "dbfile)
		    (db:with-lock-db (servdat-dbfile *server-info*)
				     (lambda (dbh dbfile)
				       (db:release-lock dbh dbfile))))
		  (let* ((sdat *server-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat)))
		    (if (not (string-match ".db/main.db" (args:get-arg "-db")))
			(let* ((res (rmt:deregister-server remdat
							   *toppath*
							   (servdat-host *server-info*)   ;; iface
							   (servdat-port *server-info*)
							   (servdat-uuid *server-info*)
							   dbfile ;; (current-process-id)
							   )))
			  (debug:print-info 0 *default-log-port* "deregistered-server, res="res)))
		    
		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))

(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*)








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	  (if (sqlite3:database? db)
	      (sqlite3:finalize! db)
	      (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, db is not a database, not finalizing..."))
	  (if (sqlite3:database? inmem)
	      (sqlite3:finalize! inmem)
	      (debug:print-info 0 *default-log-port* "in rmt:server-shutdown, inmem is not a database, not finalizing..."))
	  (debug:print-info 0 *default-log-port* "Finalizing db and inmem complete")
	  (if (not am-server)
	      (debug:print-info 0 *default-log-port* "I am not a server, should NOT get here!")
	      (if (string-match ".*/main.db$" dbfile)
		  (let ((pkt-file (conc (get-pkts-dir *toppath*)
					"/" (servdat-uuid *server-info*)
					".pkt")))
		    (debug:print-info 0 *default-log-port* "removing pkt "pkt-file)
		    (delete-file* pkt-file)
		    (debug:print-info 0 *default-log-port* "Releasing lock for "dbfile)
		    (db:with-lock-db (servdat-dbfile *server-info*)
				     (lambda (dbh dbfile)
				       (db:release-lock dbh dbfile))))
		  (let* ((sdat *server-info*) ;; we have a run-id server
			 (host (servdat-host sdat))
			 (port (servdat-port sdat))
			 (uuid (servdat-uuid sdat))

			 (res  (rmt:deregister-server remdat *toppath* host port uuid dbfile)))






		    (debug:print-info 0 *default-log-port* "deregistered-server, res="res)

		    (debug:print-info 0 *default-log-port* "deregistering server "host":"port" with uuid "uuid)
		    )))))))

(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*)
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	 (hostname        (get-host-name))
	 (ipaddrstr       (let ((ipstr (if (string=? "-" hostn)
					   ;; (string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
					   (server:get-best-guess-address hostname)
					   #f)))
			    (if ipstr ipstr hostn))) ;; hostname))) 
	 (port            (portlogger:open-run-close portlogger:find-port))
	 (link-tree-path  (common:get-linktree))
	 ;; (tmp-area        (common:get-db-tmp-area))
	 #;(start-file      (conc tmp-area "/.server-start")))
    (debug:print-info 0 *default-log-port* "portlogger recommended port: " port)
    (if *server-info*
	(begin
	  (servdat-host-set! *server-info* ipaddrstr)
	  (servdat-port-set! *server-info* port)








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	 (hostname        (get-host-name))
	 (ipaddrstr       (let ((ipstr (if (string=? "-" hostn)
					   ;; (string-intersperse (map number->string (u8vector->list (hostname->ip hostname))) ".")
					   (server:get-best-guess-address hostname)
					   #f)))
			    (if ipstr ipstr hostn))) ;; hostname))) 
	 (port            (portlogger:open-run-close portlogger:find-port))
	 ;; (link-tree-path  (common:get-linktree))
	 ;; (tmp-area        (common:get-db-tmp-area))
	 #;(start-file      (conc tmp-area "/.server-start")))
    (debug:print-info 0 *default-log-port* "portlogger recommended port: " port)
    (if *server-info*
	(begin
	  (servdat-host-set! *server-info* ipaddrstr)
	  (servdat-port-set! *server-info* port)
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	(servdat-trynum-set! *server-info*
			     (+ (servdat-trynum *server-info*) 1)))
      (set! *server-info* (make-servdat host: ipaddrstr port: portnum)))
  (debug:print-info 0 *default-log-port* "rmt:try-start-server time="
		    (seconds->time-string (current-seconds))
		    " ipaddrsstr=" ipaddrstr
		    " portnum=" portnum)
;;(if (is-port-in-use portnum)
;;    (begin
;;	(portlogger:open-run-close portlogger:set-failed portnum)
;;	(debug:print 0 *default-log-port* "WARNING: failed to start on portnum: " portnum ", trying next port")
;;	;; (thread-sleep! 0.1)
;;	(rmt:try-start-server ipaddrstr
;;			      (portlogger:open-run-close
;;			       portlogger:find-port)))
      (begin
	(if (not *server-info*)
	    (set! *server-info* (make-servdat
				 host: ipaddrstr
				 port: portnum)))
	(servdat-status-set! *server-info* 'starting)
	(servdat-port-set!   *server-info* portnum)
	(if (not (servdat-rep *server-info*))
	    (let ((rep  (make-rep-socket)))
	      (servdat-rep-set!    *server-info* rep)
	      (socket-set! rep 'nng/recvtimeo 2000)))
	(let* ((rep (servdat-rep *server-info*)))
	  (debug:print 0 *default-log-port* "INFO: Trying to start server on " ipaddrstr ":" portnum)
	  (handle-exceptions
	   exn
	   (begin
	     (print-error-message exn)
	     (if (< portnum 64000)
		 (begin 
		   (debug:print 0 *default-log-port* "WARNING: attempt to start server failed. Trying again ...")
		   (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
		   (debug:print 5 *default-log-port* "exn=" (condition->list exn))
		   (portlogger:open-run-close portlogger:set-failed portnum)
		   (debug:print 0 *default-log-port* "WARNING: failed to start on portnum: " portnum ", trying next port")
		   ;; (thread-sleep! 0.1)
		   (rmt:try-start-server ipaddrstr
					 (portlogger:open-run-close portlogger:find-port)))
		 (begin
		   (print "ERROR: Tried and tried but could not start the server, stopping at port "portnum))))
	   (nng-listen rep (conc "tcp://*:" portnum))
	   rep)))) ;;)

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;;======================================================================
;; C L I E N T S








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	(servdat-trynum-set! *server-info*
			     (+ (servdat-trynum *server-info*) 1)))
      (set! *server-info* (make-servdat host: ipaddrstr port: portnum)))
  (debug:print-info 0 *default-log-port* "rmt:try-start-server time="
		    (seconds->time-string (current-seconds))
		    " ipaddrsstr=" ipaddrstr
		    " portnum=" portnum)









  (assert (servdat? *server-info*) "FATAL: Must always have *server-info* properly set up by here.")



  (servdat-status-set! *server-info* 'starting)
  (servdat-port-set!   *server-info* portnum)
  (if (not (servdat-rep *server-info*))
      (let ((rep  (make-rep-socket)))
	(servdat-rep-set!    *server-info* rep)
	(socket-set! rep 'nng/recvtimeo 2000)))
  (let* ((rep (servdat-rep *server-info*)))
    (debug:print 0 *default-log-port* "INFO: Trying to start server on " ipaddrstr ":" portnum)
    (handle-exceptions
     exn
     (begin
       (print-error-message exn)
       (if (< portnum 64000)
	   (begin 
	     (debug:print 0 *default-log-port* "WARNING: attempt to start server failed. Trying again ...")
	     (debug:print 0 *default-log-port* " message: " ((condition-property-accessor 'exn 'message) exn))
	     (debug:print 5 *default-log-port* "exn=" (condition->list exn))
	     (portlogger:open-run-close portlogger:set-failed portnum)
	     (debug:print 0 *default-log-port* "WARNING: failed to start on portnum: " portnum ", trying next port")
	     ;; (thread-sleep! 0.1)
	     (rmt:try-start-server ipaddrstr
				   (portlogger:open-run-close portlogger:find-port)))
	   (begin
	     (print "ERROR: Tried and tried but could not start the server, stopping at port "portnum))))
     (nng-listen rep (conc "tcp://*:" portnum))
     rep)))

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;;======================================================================
;; C L I E N T S
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				     (set! *unclean-shutdown* #f)
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     (rmt:server-shutdown)
				     (portlogger:open-run-close portlogger:set-port port "released")
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				 (current-seconds)))))

    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface             (servdat-host *server-info*))
	   (port              (servdat-port *server-info*)))








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				     (set! *unclean-shutdown* #f)
				     (debug:print-info 0 *default-log-port* "Starting to shutdown the server. pid="(current-process-id))
				     (rmt:server-shutdown)
				     (portlogger:open-run-close portlogger:set-port port "released")
				     (exit)))
	 (timed-out?        (lambda ()
			      (<= (+ last-access server-timeout)
				  (current-seconds)))))
    (servdat-dbfile-set! *server-info* (args:get-arg "-db"))
    ;; main and run db servers have both got wait logic (could/should merge it)
    (if is-main
	(rmt:wait-for-server pkts-dir dbname server-key)
	(rmt:wait-for-stable-interface))
    ;; this is our forever loop
    (let* ((iface             (servdat-host *server-info*))
	   (port              (servdat-port *server-info*)))
︙︙

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