Megatest

client.scm at [fba5bad548]
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File client.scm artifact cc83111095 part of check-in fba5bad548



;; Copyright 2006-2012, Matthew Welland.
;; 
;; This file is part of Megatest.
;; 
;;     Megatest is free software: you can redistribute it and/or modify
;;     it under the terms of the GNU General Public License as published by
;;     the Free Software Foundation, either version 3 of the License, or
;;     (at your option) any later version.
;; 
;;     Megatest is distributed in the hope that it will be useful,
;;     but WITHOUT ANY WARRANTY; without even the implied warranty of
;;     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;;     GNU General Public License for more details.
;; 
;;     You should have received a copy of the GNU General Public License
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.

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

(use srfi-18 extras tcp s11n srfi-1 posix regex srfi-69 hostinfo md5
     message-digest matchable 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.
(declare (uses commonmod))
(import commonmod)

(module client
*

)

(import client)

(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))

;; 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
;;
 
;;(define (http-transport:server-dat-make-url runremote)
(define (client:get-url runremote)
  (if (and (remote-iface runremote)
	   (remote-port  runremote))
      (conc "http://" 
	    (remote-iface runremote)
	    ":"
	    (remote-port  runremote))
      #f))

(define (client:setup areapath runremote #!key (remaining-tries 100) (failed-connects 0)(area-dat #f))
  (mutex-lock! *rmt-mutex*)
  (let ((res (client:setup-http areapath runremote remaining-tries: remaining-tries failed-connects: failed-connects area-dat: area-dat)))
    (mutex-unlock! *rmt-mutex*)
    res))

(define (client:setup-http areapath runremote #!key (remaining-tries 100) (failed-connects 0))
  (debug:print-info 2 *default-log-port* "client:setup remaining-tries=" remaining-tries)
  (server:start-and-wait areapath)
  (if (<= remaining-tries 0)
      (begin
	(debug:print-error 0 *default-log-port* "failed to start or connect to server")
	(exit 1))
      ;;
      ;; Alternatively here, we can get the list of candidate servers and work our way
      ;; through them searching for a good one.
      ;;
      (let* ((server-dat (server:choose-server areapath 'best))) ;; list host port start-time server-id pid
;;	     (runremote  (or area-dat *runremote*)))
	(if (not server-dat) ;; no server found
	    (begin
	      (if (< remaining-tries 99)(thread-sleep! 1)) ;; obviously it needs time
	      (client:setup-http areapath runremote remaining-tries: (- remaining-tries 1)))
	    (match server-dat
	      ((host port start-time server-id pid)
	       (debug:print-info 4 *default-log-port* "client:setup server-dat=" server-dat ", remaining-tries=" remaining-tries)
	       (if (not runremote)
                   (begin
		     ;; Here we are creating a runremote where there was none or it was clobbered with #f
		     ;;
		     (set! runremote (make-and-init-remote))
                     (let* ((server-info (server:check-if-running areapath)))
		       (remote-server-info-set! runremote server-info)
                       (if server-info
                           (begin
                             (remote-server-url-set! runremote (server:record->url server-info))
                             (remote-server-id-set! runremote (server:record->id server-info)))))))
	       ;; at this point we have a runremote
	       (if (and host port server-id)
		   (let* ((nada     (client:connect host port server-id runremote))
			  (ping-res (rmt:login-no-auto-client-setup runremote)))
		     (if ping-res
			 (if runremote
			     (begin
			       (debug:print-info 2 *default-log-port* "connected to " (client:get-url runremote))
			       runremote)
			     (client:setup-http areapath runremote remaining-tries: (- remaining-tries 1)))
			 (begin    ;; login failed but have a server record, clean out the record and try again
			   (debug:print-info 0 *default-log-port* "client:setup, login unsuccessful, will attempt to start server ... ping-res=" ping-res ", server-dat=" server-dat) ;; had runid.  Fixes part of Randy;s ticket 1405717332
			   (http-transport:close-connections runremote)
			   (thread-sleep! 1)
			   (client:setup-http areapath runremote remaining-tries: (- remaining-tries 1))
			   )))
		   (begin    ;; no server registered
		     ;; (server:kind-run areapath)
		     (server:start-and-wait areapath)
		     (debug:print-info 0 *default-log-port* "client:setup, no server registered, remaining-tries=" remaining-tries)
		     (thread-sleep! 1) ;; (+ 5 (random (- 20 remaining-tries))))  ;; give server a little time to start up, randomize a little to avoid start storms.
		     (client:setup-http areapath runremote remaining-tries: (- remaining-tries 1)))))
	      (else
	       (debug:print 0 *default-log-port* "ERROR: malformed server-dat="server-dat)))))))

;;
;; connect - stored in remote-condat
;;
;; (define (http-transport:client-connect iface port server-id runremote)
(define (client:connect iface port server-id runremote-in)
  (let* ((runremote (or runremote-in
			(make-runremote))))
    (debug:print-info 2 *default-log-port* "Connecting to server at "iface":"port", id "server-id)
    (let* ((api-url      (conc "http://" iface ":" port "/api"))
	   (api-uri      (uri-reference (conc "http://" iface ":" port "/api")))
	   (api-req      (make-request method: 'POST uri: api-uri)))
      ;;	 (server-dat   (vector iface port api-uri api-url api-req (current-seconds) server-id)))
      (remote-iface-set!   runremote iface)
      (remote-port-set!    runremote port)
      (remote-server-id-set! runremote server-id)
      (remote-connect-time-set! runremote (current-seconds))
      (remote-last-access-set! runremote (current-seconds))
      (remote-api-url-set! runremote api-url)
      (remote-api-uri-set! runremote api-uri)
      (remote-api-req-set! runremote api-req)
      runremote)))