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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/>.
;;
;;======================================================================
;;
;; This is the Megatest specific stuff for starting and maintaining a
;; server. Stuff that talks to the server should go in client.scm.
;; server. Anything that talks to the server should go in client.scm (maybe - might get rid of client.scm)
;; General nanomsg stuff (not Megatest specific) should go in the
;; nmsg-transport.scm file.
;;
;;======================================================================
(require-extension (srfi 18) extras tcp s11n)
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;; P K T S S T U F F
;;======================================================================
;;======================================================================
;; N A N O M S G B A S E D S E R V E R
;;======================================================================
(defstruct nmsg
(defstruct area
(conn #f)
(port #f)
(myaddr #f)
(hosts (make-hash-table))
pkt
pktid ;; get pkt from hosts table if needed
pktspec
pktfile
pktsdir
mtrah
(mutex (make-mutex))
)
;; make it a global? Well, it is local to nmsg module
;; make it a global? Well, it is local to area module
(define *nmsg-conndat* (make-nmsg))
(nmsg-pktspec-set! *nmsg-conndat*
(define *area-conndat* (make-area))
(area-pktspec-set! *area-conndat*
`((server (hostname . h)
(port . p)
(pid . i)
)))
(define (server:get-mtrah)
(or (get-environment-variable "MT_RUN_AREA_HOME")
(if (file-exists? "megatest.config")
(current-directory)
#f)))
;; get a port
;; start the nmsg server
;; look for other servers
;; contact other servers and compile list of servers
;; there are two types of server
;; main servers - dashboards, runners and dedicated servers - need pkt
;; passive servers - test executers, step calls, list-runs - no pkt
;;
(define (server:start-nmsg #!optional (force-server-type #f))
(mutex-lock! (nmsg-mutex *nmsg-conndat*))
(mutex-lock! (area-mutex *area-conndat*))
(let* ((server-type (or force-server-type
(if (args:any? "-run" "-server")
'main
'passive)))
(port-num (portlogger:open-run-close portlogger:find-port))
(nmsg-conn (nmsg:start-server port-num))
(pktspec (nmsg-pktspec *nmsg-conndat*))
(mtdir (or (get-environment-variable "MT_RUN_AREA_HOME")
(area-conn (nmsg:start-server port-num))
(pktspec (area-pktspec *area-conndat*))
(mtdir (or (server:get-mtrah)
(if (file-exists? "megatest.config")
(current-directory)
(begin
(print "ERROR: We don't appear to be in a megatest area and MT_RUN_AREA_HOME is not set.")
#f))))
(nmsg-pkt-set! *nmsg-conndat*
(write-alist->pkt
pktdir
`((hostname . ,(get-host-name))
(port . ,port-num)
(pid . ,(current-process-id)))
pktspec: pktspec
ptype: 'server))
(nmsg-pktfile-set! *nmsg-conndat* (conc pktdir "/" (nmsg-pkt *nmsg-conndat*) ".pkt"))))
(nmsg-conn-set! *nmsg-conndat* nmsg-conn)
(nmsg-port-set! *nmsg-conndat* port-num)
(mutex-unlock! (nmsg-mutex *nmsg-conndat*))
(area-pktid-set! *area-conndat*
(write-alist->pkt
pktdir
`((hostname . ,(get-host-name))
(port . ,port-num)
(pid . ,(current-process-id)))
pktspec: pktspec
ptype: 'server))
(area-pktfile-set! *area-conndat* (conc pktdir "/" (area-pktid *area-conndat*) ".pkt"))))
;; set all the area info in the
(area-pktsdir-set! *area-conndat* pktdir)
(area-mtrah-set! *area-conndat* mtdir)
(area-conn-set! *area-conndat* area-conn)
(area-port-set! *area-conndat* port-num)
(mutex-unlock! (area-mutex *area-conndat*))
#t))))
;; Call this to start the actual server
;;
;; start_server
;;
;; mode: '
;;
(define (server:launch mode)
(let ((start-time (current-seconds)))
(server:start-nmsg mode)
(let loop ((dead-time (- (current-seconds) start-time)))
(thread-sleep! 1)
(if (< dead-time 10)
(loop (- (current-seconds) start-time))
(print "Timed out. Exiting")))))
(define (server:shutdown)
(let ((conn (nmsg-conn *nmsg-conndat*))
(pktf (nmsg-pktfile *nmsg-conndat*))
(port (nmsg-port *nmsg-conndat*)))
(let ((conn (area-conn *area-conndat*))
(pktf (area-pktfile *area-conndat*))
(port (area-port *area-conndat*)))
(if conn
(begin
(if pktf (delete-file* pktf))
(server:send-all "imshuttingdown")
(nmsg:close conn)
(portlogger:open-run-close portlogger:release-port port)))))
(define (server:send-all msg)
#f)
;; given a area record look up all the packets
(define (server:get-all-server-pkts rec)
(let ((all-pkt-files (glob (conc (area-pktsdir rec) "/*.pkt")))
(pktspec (area-pktspec rec)))
(map (lambda (pkt-file)
(read-pkt->alist pkt-file pktspec: pktspec))
all-pkt-files)))
;; look up all pkts and get the server id (the hash), port, host/ip
;; store this info in the global struct *area-conndat*
;;
(define (server:get-all)
;; readll all pkts
;; foreach pkt; if it isn't me ping the server; if alive, add to hosts hash, else rm the pkt
'())
;; send out an "I'm about to exit notice to all known servers"
;;
(define (server:announce-death)
'())
(define (server:get-my-best-address)
(ip->string (car (filter (lambda (x)
(not (eq? (u8vector-ref x 0) 127)))
(vector->list (hostinfo-addresses (hostname->hostinfo "zeus")))))))
;; whoami? I am my pkt
;;
(define (server:whoami?)
(nmsg-pkt *nmsg-conndat*))
(define (server:whoami? area)
(hash-table-ref/default (area-hosts area)(area-pktid area) #f))
;;======================================================================
;; S E R V E R U T I L I T I E S
;;======================================================================
;; get a signature for identifing this process
(define (server:get-process-signature)
(conc (get-host-name) " " (current-process-id)))
(cons (get-host-name)(current-process-id)))
;; ;; Get the transport
;; (define (server:get-transport)
;; (if *transport-type*
;; *transport-type*
;; (let ((ttype (string->symbol
|