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Artifact a2787b336121fefa2ef57d6420012d88d9a4b8d2:



;; Copyright 2006-2012, 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.

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

(require-extension (srfi 18) extras tcp s11n)

(use sqlite3 srfi-1 posix regex regex-case srfi-69 hostinfo md5 message-digest)
;; (use zmq)

(import (prefix sqlite3 sqlite3:))

(use spiffy uri-common intarweb http-client spiffy-request-vars uri-common intarweb directory-utils)

(declare (unit client))

(declare (uses common))
(declare (uses db))
(declare (uses tasks)) ;; tasks are where stuff is maintained about what is running.

(include "common_records.scm")
(include "db_records.scm")

;; client:get-signature
(define (client:get-signature)
  (if *my-client-signature* *my-client-signature*
      (let ((sig (conc (get-host-name) " " (current-process-id))))
	(set! *my-client-signature* sig)
	*my-client-signature*)))

;; Not currently used! But, I think it *should* be used!!!
(define (client:logout serverdat)
  (let ((ok (and (socket? serverdat)
		 (cdb:logout serverdat *toppath* (client:get-signature)))))
    ok))

;; BB: commenting out orphan code
;;;;;
;; (define (client:connect iface port)
;;   (case (server:get-transport)
;;     ((rpc)  (rpc:client-connect  iface port))
;;     ((http) (http:client-connect iface port))
;;     ((zmq)  (zmq:client-connect  iface port))
;;     (else   (rpc:client-connect  iface port))))

(define (client:setup run-id #!key (remaining-tries 10))
  (debug:print-info 2 *default-log-port* "client:setup remaining-tries=" remaining-tries)
  (let* ((server-dat (tasks:bb-get-server-info run-id))
         (transport (if server-dat (string->symbol (tasks:hostinfo-get-transport server-dat)) 'noserver)))
    ;;(BB> "transport >"transport"<  string? transport >"(string? transport)"< symbol? transport >"(symbol? transport)"<")
    (case transport
      ((noserver) ;; no server registered
       (if (<= remaining-tries 0)
           (begin
             (debug:print-error 0 *default-log-port* "failed to start or connect to server for run-id " run-id)
             (exit 1))
           (begin    
             (let ((num-available (tasks:bb-num-in-available-state run-id)))
               (debug:print-info 0 *default-log-port* "client:setup, no server registered, remaining-tries=" remaining-tries " num-available=" num-available)
               (if (< num-available 2)
                   (server:try-running run-id))
               (thread-sleep! (+ 5 (random (- 20 remaining-tries))))  ;; give server a little time to start up, randomize a little to avoid start storms.
               (client:setup run-id remaining-tries: (- remaining-tries 1))))))
      ((http)(client:setup-http run-id server-dat remaining-tries))
      ;; ((rpc) (rpc-transport:client-setup run-id)) ;;(client:setup-rpc run-id)) rpc not implemented;  want to see a failure here for now.
      (else
       (debug:print-error 0 *default-log-port* "(6) Transport ["
                          transport "] specified for run-id [" run-id "] is not implemented in client:setup.  Cannot proceed.")
       (exit 1)))))

;; client:setup-http
;;
;; For http transport, robustly ensure an advertised-running server is actually working and responding, and
;; establish tcp connection to server.  For servers marked running but not responding, kill them and clear from mdb
;; 
(define (client:setup-http run-id server-dat remaining-tries)
  (let* ((iface     (tasks:hostinfo-get-interface server-dat))
         (hostname  (tasks:hostinfo-get-hostname  server-dat))
         (port      (tasks:hostinfo-get-port      server-dat))

         (start-res (http-transport:client-connect iface port))
         (ping-res  (rmt:login-no-auto-client-setup start-res run-id)))
    (if (and start-res ping-res)
        (begin
          (hash-table-set! *runremote* run-id start-res) ;; side-effect - *runremote* cache init fpr rmt:*
          (debug:print-info 2 *default-log-port* "connected to " (http-transport:server-dat-make-url start-res))
          start-res)
        (begin    ;; login failed but have a server record, clean out the record and try again
          (debug:print-info 0 *default-log-port* "client:setup-http, login failed, will attempt to start server ... start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
          (http-transport:close-connections run-id)
          (hash-table-delete! *runremote* run-id)
          (tasks:kill-server-run-id run-id)
          (tasks:bb-server-force-clean-run-record  run-id iface port
                                                   " client:setup-http (server-dat = #t)")
          (if (> remaining-tries 8)
              (thread-sleep! (+ 1 (random 5))) ;; spread out the starts a little
              (thread-sleep! (+ 15 (random 20)))) ;; it isn't going well. give it plenty of time
          (server:try-running run-id)
          (thread-sleep! 5)   ;; give server a little time to start up
          (client:setup run-id remaining-tries: (- remaining-tries 1))
          ))))


;; (define (client:login-no-auto-setup server-info run-id)
;;   (case (server:get-transport)
;;     ((rpc)  (rpc:login-no-auto-client-setup server-info run-id))
;;     ((http) (rmt:login-no-auto-client-setup server-info run-id))
;;     (else   (rpc:login-no-auto-client-setup server-info run-id))))
;; 
;; (define (client:setup-rpc run-id)
;;   (debug:print 0 *default-log-port* "INFO: client:setup remaining-tries=" remaining-tries)
;;   (if (<= remaining-tries 0)
;;       (begin
;; 	(debug:print-error 0 *default-log-port* "failed to start or connect to server for run-id " run-id)
;; 	(exit 1))
;;       (let ((host-info (hash-table-ref/default *runremote* run-id #f)))
;; 	(debug:print-info 0 *default-log-port* "client:setup host-info=" host-info ", remaining-tries=" remaining-tries)
;; 	(if host-info
;; 	    (let* ((iface     (car  host-info))
;; 		   (port      (cadr host-info))
;; 		   (start-res (client:connect iface port))
;; 		   ;; (ping-res  (server:ping-server run-id iface port))
;; 		   (ping-res  (client:login-no-auto-setup start-res run-id)))
;; 	      (if ping-res   ;; sucessful login?
;; 		  (begin
;; 		    (hash-table-set! *runremote* run-id start-res)
;; 		    start-res)  ;; return the server info
;; 		  (if (member remaining-tries '(3 4 6))
;; 		      (begin    ;; login failed
;; 			(debug:print 25 *default-log-port* "INFO: client:setup start-res=" start-res ", run-id=" run-id ", server-dat=" host-info)
;; 			(hash-table-delete! *runremote* run-id)
;; 			(open-run-close tasks:server-force-clean-run-record
;; 			 		tasks:open-db
;; 			 		run-id 
;; 			 		(car  host-info)
;; 			 		(cadr host-info)
;; 					" client:setup (host-info=#t)")
;; 			(thread-sleep! 5)
;; 			(client:setup run-id remaining-tries: 10)) ;; (- remaining-tries 1)))
;; 		      (begin
;; 			(debug:print 25 *default-log-port* "INFO: client:setup failed to connect, start-res=" start-res ", run-id=" run-id ", host-info=" host-info)
;; 			(thread-sleep! 5)
;; 			(client:setup run-id remaining-tries: (- remaining-tries 1))))))
;; 	    ;; YUK: rename server-dat here
;; 	    (let* ((server-dat (open-run-close tasks:get-server-info tasks:open-db run-id)))
;; 	      (debug:print-info 0 *default-log-port* "client:setup server-dat=" server-dat ", remaining-tries=" remaining-tries)
;; 	      (if server-dat
;; 		  (let* ((iface     (tasks:hostinfo-get-interface server-dat))
;; 			 (port      (tasks:hostinfo-get-port      server-dat))
;; 			 (start-res (http-transport:client-connect iface port))
;; 			 ;; (ping-res  (server:ping-server run-id iface port))
;; 			 (ping-res  (rmt:login-no-auto-client-setup start-res run-id)))
;; 		    (if start-res
;; 			(begin
;; 			  (hash-table-set! *runremote* run-id start-res)
;; 			  start-res)
;; 			(if (member remaining-tries '(2 5))
;; 			    (begin    ;; login failed
;; 			      (debug:print 25 *default-log-port* "INFO: client:setup start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
;; 			      (hash-table-delete! *runremote* run-id)
;; 			      (open-run-close tasks:server-force-clean-run-record
;; 					      tasks:open-db
;; 					      run-id 
;; 					      (tasks:hostinfo-get-interface server-dat)
;; 					      (tasks:hostinfo-get-port      server-dat)
;; 					      " client:setup (server-dat = #t)")
;; 			      (thread-sleep! 2)
;; 			      (server:try-running run-id)
;; 			      (thread-sleep! 10) ;; give server a little time to start up
;; 			      (client:setup run-id remaining-tries: 10)) ;; (- remaining-tries 1)))
;; 			    (begin
;; 			      (debug:print 25 *default-log-port* "INFO: client:setup start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
;; 			      (thread-sleep! 5)
;; 			      (client:setup run-id remaining-tries: (- remaining-tries 1))))))
;; 		  (begin    ;; no server registered
;; 		    (if (eq? remaining-tries 2)
;; 			(begin
;; 			  ;; (open-run-close tasks:server-clean-out-old-records-for-run-id tasks:open-db run-id " client:setup (server-dat=#f)")
;; 			  (client:setup run-id remaining-tries: 10))
;; 			(begin
;; 			  (thread-sleep! 2) 
;; 			  (debug:print 25 *default-log-port* "INFO: client:setup start-res (not defined here), run-id=" run-id ", server-dat=" server-dat)
;; 			  (if (< (open-run-close tasks:num-in-available-state tasks:open-db run-id) 3)
;; 			      (begin
;; 				;; (open-run-close tasks:server-clean-out-old-records-for-run-id tasks:open-db run-id " client:setup (server-dat=#f)")
;; 				(server:try-running run-id)))
;; 			  (thread-sleep! 10) ;; give server a little time to start up
;; 			  (client:setup run-id remaining-tries: (- remaining-tries 1)))))))))))

;; Do all the connection work, look up the transport type and set up the
;; connection if required.
;;
;; 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, need to remove *runremote* stuff
;;

;; BB: commenting out orphan code.  
;;
;; ;; keep this as a function to ease future 
;; (define (client:start run-id server-info)
;;   (http-transport:client-connect (tasks:hostinfo-get-interface server-info)
;; 				 (tasks:hostinfo-get-port server-info)))

;; ;; client:signal-handler
;; (define (client:signal-handler signum)
;;   (signal-mask! signum)
;;   (set! *time-to-exit* #t)
;;   (handle-exceptions
;;    exn
;;    (debug:print 0 *default-log-port* " ... exiting ...")
;;    (let ((th1 (make-thread (lambda ()
;; 			     "") ;; do nothing for now (was flush out last call if applicable)
;; 			   "eat response"))
;; 	 (th2 (make-thread (lambda ()
;; 			     (debug:print-error 0 *default-log-port* "Received ^C, attempting clean exit. Please be patient and wait a few seconds before hitting ^C again.")
;; 			     (thread-sleep! 1) ;; give the flush one second to do it's stuff
;; 			     (debug:print 0 *default-log-port* "       Done.")
;; 			     (exit 4))
;; 			   "exit on ^C timer")))
;;      (thread-start! th2)
;;      (thread-start! th1)
;;      (thread-join! th2))))
;; 
;; ;; client:launch
;; ;; Need to set the signal handler somewhere other than here as this
;; ;; routine will go away.
;; ;;
;; (define (client:launch run-id)
;;   (set-signal-handler! signal/int  client:signal-handler)
;;   (set-signal-handler! signal/term client:signal-handler)
;;   (if (client:setup run-id)
;;       (debug:print-info 2 *default-log-port* "connected as client")
;;       (begin
;; 	(debug:print-error 0 *default-log-port* "Failed to connect as client")
;; 	(exit))))
;;