Megatest

;; (use  srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest posix-extras)
;; 
;; (use spiffy uri-common intarweb http-client spiffy-request-vars intarweb spiffy-directory-listing)
;; 
;; Configurations for server
(tcp-buffer-size 2048)
(max-connections 2048) 

(defstruct sdat
  host
  port
  uuid)

(define (http-transport:make-server-url hostport)
  (if (not hostport)
      #f
      (conc "http://" (car hostport) ":" (cadr hostport))))

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

		
		;; get_next_port goes here
		(http-transport:try-start-server ipaddrstr
						 (portlogger:open-run-close portlogger:find-port)))
	      (begin
		(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))
      (set! *server-info* (make-sdat host: ipaddrstr port: portnum))
      (debug:print 0 *default-log-port* "INFO: Trying to start server on " ipaddrstr ":" portnum)
      ;; This starts the spiffy server
      ;; NEED WAY TO SET IP TO #f TO BIND ALL
      ;; (start-server bind-address: ipaddrstr port: portnum)
      (if config-hostname ;; this is a hint to bind directly
	  (start-server port: portnum bind-address: (if (equal? config-hostname "-")
							ipaddrstr

(define (register-server pkts-dir pkt-spec host port servkey ipaddr dbpath)
  (let* ((pkt-dat `((host    . ,host)
		    (port    . ,port)
		    (servkey . ,servkey)
		    (pid     . ,(current-process-id))
		    (ipaddr  . ,ipaddr)
		    (dbpath  . ,dbpath))))
    (write-alist->pkt
     pkts-dir
     pkt-dat
     pktspec: pkt-spec
     ptype: 'server)))
		    (dbpath  . ,dbpath)))
	 (uuid    (write-alist->pkt
		   pkts-dir
		   pkt-dat
		   pktspec: pkt-spec
		   ptype: 'server)))
    (debug:print 0 *default-log-port* "Server on "host":"port" registered in pkt "uuid)
    uuid))

;; ya, fake it for now
;;
(define (register-server-in-db db-file)
  #t)

(define (get-pkts-dir #!optional (apath #f))

                          (mutex-unlock! *heartbeat-mutex*)
                          (if (and sdat
				   (not changed)
				   (> (- (current-seconds) start-time) 2))
			      (begin
				(debug:print-info 0 *default-log-port* "Received server alive signature, now attempting to lock in server")
				;; create a server pkt in *toppath*/.meta/srvpkts
				
				(register-server pkts-dir *srvpktspec* (get-host-name)
						 (cadr sdat) server-key (car sdat) db-file)

				;; TODO:
				;;   1. change sdat to stuct
				;;   2. add uuid to struct
				;;   3. update uuid in sdat here
				;;
				(sdat-uuid-set! sdat
						(register-server
						 pkts-dir *srvpktspec*
						 (get-host-name)
						 (sdat-port sdat) server-key
						 (sdat-host sdat) db-file))

				;; now read pkts and see if we are a contender
				(let* ((all-pkts     (get-all-server-pkts pkts-dir *srvpktspec*))
				       (viables      (get-viable-servers all-pkts db-file))
				       (best-srv     (get-best-candidate viables db-file))
				       (best-srv-key (if best-srv (alist-ref 'servkey best-srv) #f)))
				  (debug:print 0 *default-log-port* "best-srv-key: "best-srv-key", server-key: "server-key)
				  ;; am I the best-srv, compare server-keys to know
				  (if (and (equal? best-srv-key server-key)
					   (register-server-in-db db-file))
				      (if (db:get-iam-server-lock *dbstruct-db* run-id)
				      (if (db:get-iam-server-lock *dbstruct-db* *toppath* run-id)
					  (debug:print 0 *default-log-port* "I'm the server!")
					  (bdat-time-to-exit-set! *bdat* #t))) ;; nope, we are not needed, exit when can do
				  sdat))
                              (begin
				(debug:print-info 0 *default-log-port* "Still waiting, last-sdat=" last-sdat)
                                (sleep 4)
				(if (> (- (current-seconds) start-time) 120) ;; been waiting for two minutes

	  (loop (+ count 1) 'running bad-sync-count (current-milliseconds)))
      
      ;; Check that iface and port have not changed (can happen if server port collides)
      (mutex-lock! *heartbeat-mutex*)
      (set! sdat *server-info*)
      (mutex-unlock! *heartbeat-mutex*)
      
      (if (or (not (equal? (sdat-host sdat) iface))
      (if (not (equal? sdat (list iface port)))
	      (not (equal? (sdat-port sdat) port)))
	  (let ((new-iface (car sdat))
		(new-port  (cadr sdat)))
	    (debug:print-info 0 *default-log-port* "WARNING: interface changed, refreshing iface and port info")
	    (set! iface new-iface)
	    (set! port  new-port)
             (if (not *server-id*)
              (set! *server-id* (server:mk-signature)))

;;      	 (list? n))
;;          (member *verbosity* n))))

     ;; this segment will run launch:setup only if -log is not set. This is fairly safe as servers are not
     ;; manually started and thus should never be started in a non-megatest area. Thus no need to handle situation
     ;; where (launch:setup) returns #f?
     ;;
     (if (or (args:get-arg "-log")(args:get-arg "-server")) ;; redirect the log always when a server
     (if (or (args:get-arg "-log")#;(args:get-arg "-server")) ;; redirect the log always when a server
         (handle-exceptions
     	exn
     	(begin
     	  (print "ERROR: Failed to switch to log output. " ((condition-property-accessor 'exn 'message) exn) ", exn=" exn)
     	  )
           (let* ((tl   (or (args:get-arg "-log")(launch:setup)))   ;; run launch:setup if -server, ensure we do NOT run launch:setup if -log specified
     	     (logf (or (args:get-arg "-log") ;; use -log unless we are a server, then craft a logfile name