;; 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))
(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) (failed-connects 0))
(case (server:get-transport)
((rpc) (rpc-transport:client-setup run-id)) ;;(client:setup-rpc run-id))
((http)(client:setup-http run-id))
(else (rpc-transport:client-setup run-id)))) ;; (client:setup-rpc run-id))))
;; (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 "INFO: client:setup remaining-tries=" remaining-tries)
;; (if (<= remaining-tries 0)
;; (begin
;; (debug:print 0 "ERROR: 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 "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 "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 "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 tasks:open-db run-id)))
;; (debug:print-info 0 "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 "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 "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 "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
;;
(define (client:setup-http run-id #!key (remaining-tries 10) (failed-connects 0))
(debug:print-info 2 "client:setup remaining-tries=" remaining-tries)
(let* ((tdbdat (tasks:open-db)))
(if (<= remaining-tries 0)
(begin
(debug:print 0 "ERROR: failed to start or connect to server for run-id " run-id)
(exit 1))
(let* ((server-dat (tasks:get-server (db:delay-if-busy tdbdat) run-id)))
(debug:print-info 4 "client:setup server-dat=" server-dat ", remaining-tries=" remaining-tries)
(if server-dat
(let* ((iface (tasks:hostinfo-get-interface server-dat))
(hostname (tasks:hostinfo-get-hostname server-dat))
(port (tasks:hostinfo-get-port server-dat))
(start-res (case *transport-type*
((http)(http-transport:client-connect iface port))
((nmsg)(nmsg-transport:client-connect hostname port))))
(ping-res (case *transport-type*
((http)(rmt:login-no-auto-client-setup start-res run-id))
((nmsg)(let ((logininfo (rmt:login-no-auto-client-setup start-res run-id)))
(if logininfo
(car (vector-ref logininfo 1))
#f))))))
(if (and start-res
ping-res)
(begin
(hash-table-set! *runremote* run-id start-res)
(debug:print-info 2 "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 "client:setup, login failed, will attempt to start server ... start-res=" start-res ", run-id=" run-id ", server-dat=" server-dat)
(case *transport-type*
((http)(http-transport:close-connections run-id)))
(hash-table-delete! *runremote* run-id)
(tasks:kill-server-run-id run-id)
(tasks:server-force-clean-run-record (db:delay-if-busy tdbdat)
run-id
(tasks:hostinfo-get-interface server-dat)
(tasks:hostinfo-get-port server-dat)
" client:setup (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))
)))
(begin ;; no server registered
(let ((num-available (tasks:num-in-available-state (db:dbdat-get-db tdbdat) run-id)))
(debug:print-info 0 "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)))))))))
;; 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)
(handle-exceptions
exn
(debug:print " ... 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 0 "ERROR: 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 " 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)
(if (client:setup run-id)
(debug:print-info 2 "connected as client")
(begin
(debug:print 0 "ERROR: Failed to connect as client")
(exit))))