111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
|
;; otherwise pick the global default as preference. (set in common.scm)
*transport-type*)))
(define *send-receive-mutex* (make-mutex)) ;; should have separate mutex per run-id
;; RA => e.g. usage (rmt:send-receive 'get-var #f (list varname))
;;
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)) ;; start attemptnum at 1 so the modulo below works as expected
;; side-effect: clean out old connections
(let ((expire-time (- (current-seconds) (server:get-timeout) 10))) ;; don't forget the 10 second margin
(for-each
(lambda (run-id)
(let ((connection (rmt:get-cinfo run-id)))
(if (and (vector? connection)
(< (http-transport:server-dat-get-last-access connection) expire-time)) ;; BB> BBTODO: make this generic, not http transport specific.
(begin
|
>
>
>
>
|
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
|
;; otherwise pick the global default as preference. (set in common.scm)
*transport-type*)))
(define *send-receive-mutex* (make-mutex)) ;; should have separate mutex per run-id
;; RA => e.g. usage (rmt:send-receive 'get-var #f (list varname))
;;
(define *rmt:srmutex* (make-mutex))
(define (rmt:send-receive cmd rid params #!key (attemptnum 1)) ;; start attemptnum at 1 so the modulo below works as expected
;; side-effect: clean out old connections
(mutex-lock! *rmt:srmutex*)
(let ((expire-time (- (current-seconds) (server:get-timeout) 10))) ;; don't forget the 10 second margin
(for-each
(lambda (run-id)
(let ((connection (rmt:get-cinfo run-id)))
(if (and (vector? connection)
(< (http-transport:server-dat-get-last-access connection) expire-time)) ;; BB> BBTODO: make this generic, not http transport specific.
(begin
|
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
|
(if connection-info
;; use the server if have connection info
(let* ((transport-type (rmt:run-id->transport-type run-id))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Here, we make request to remote server
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(dat (case transport-type ;; BB: replaced *transport-type* global with run-id specific transport-type
((http)(condition-case
(http-transport:client-api-send-receive run-id connection-info cmd params)
((commfail)(vector #f "communications fail"))
((exn)(vector #f "other fail"))))
((rpc) (rpc-transport:client-api-send-receive run-id connection-info cmd params)) ;; BB: let us error out for now
(else
(debug:print-error 0 *default-log-port* "(1) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed." (symbol? transport-type))
(vector #f (conc "transport ["transport-type"] unimplemented")))))
(success (if (vector? dat) (vector-ref dat 0) #f))
(res (if (vector? dat) (vector-ref dat 1) #f)))
(if (vector? connection-info)(http-transport:server-dat-update-last-access connection-info)) ;; BB> BBTODO: make this generic, not http transport specific.
(if success
(begin
;; (mutex-unlock! *send-receive-mutex*)
(case transport-type
((http rpc) res) ;; (db:string->obj res))
(else
(debug:print-error 0 *default-log-port* "(2) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed. Also unexpected since this branch follows success which would follow a suported transport...")
#f)
)) ;; (vector-ref res 1)))
;; no success...
(begin ;; let ((new-connection-info (client:setup run-id)))
(debug:print 0 *default-log-port* "WARNING: Communication failed, trying call to rmt:send-receive again.")
(case transport-type
((http rpc)
(hash-table-delete! *runremote* run-id) ;; don't keep using the same connection
;; NOTE: killing server causes this process to block forever. No idea why. Dec 2.
;; (if (eq? (modulo attemptnum 5) 0)
;; (tasks:kill-server-run-id run-id tag: "api-send-receive-failed"))
|
>
>
|
|
|
|
|
|
|
|
|
|
|
>
>
|
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
|
(if connection-info
;; use the server if have connection info
(let* ((transport-type (rmt:run-id->transport-type run-id))
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
;; Here, we make request to remote server
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
(dat (begin
(case transport-type ;; BB: replaced *transport-type* global with run-id specific transport-type
((http)(condition-case
(http-transport:client-api-send-receive run-id connection-info cmd params)
((commfail)(vector #f "communications fail"))
((exn)(vector #f "other fail"))))
((rpc) (rpc-transport:client-api-send-receive run-id connection-info cmd params)) ;; BB: let us error out for now
(else
(debug:print-error 0 *default-log-port* "(1) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed." (symbol? transport-type))
(vector #f (conc "transport ["transport-type"] unimplemented"))))))
(success (if (vector? dat) (vector-ref dat 0) #f))
(res (if (vector? dat) (vector-ref dat 1) #f)))
(if (vector? connection-info)(http-transport:server-dat-update-last-access connection-info)) ;; BB> BBTODO: make this generic, not http transport specific.
(if success
(begin
(mutex-unlock! *rmt:srmutex*)
;; (mutex-unlock! *send-receive-mutex*)
(case transport-type
((http rpc) res) ;; (db:string->obj res))
(else
(debug:print-error 0 *default-log-port* "(2) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed. Also unexpected since this branch follows success which would follow a suported transport...")
#f)
)) ;; (vector-ref res 1)))
;; no success...
(begin ;; let ((new-connection-info (client:setup run-id)))
(debug:print 0 *default-log-port* "WARNING: Communication failed, trying call to rmt:send-receive again.")
(mutex-unlock! *rmt:srmutex*)
(case transport-type
((http rpc)
(hash-table-delete! *runremote* run-id) ;; don't keep using the same connection
;; NOTE: killing server causes this process to block forever. No idea why. Dec 2.
;; (if (eq? (modulo attemptnum 5) 0)
;; (tasks:kill-server-run-id run-id tag: "api-send-receive-failed"))
|
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
|
;; (if (eq? attemptnum 3)(tasks:kill-server-run-id run-id))
;; (thread-sleep! 2)
(rmt:send-receive cmd run-id params attemptnum: (+ attemptnum 1)))
(else
(debug:print-error 0 *default-log-port* "(3) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed.")
#f)))))
;; no connection info; try to start a server
;;
;; Note: The tasks db was checked for a server in starting mode in the rmt:get-connection-info call
;;
(begin
(tasks:start-and-wait-for-server (db:delay-if-busy (tasks:open-db)) run-id 10)
(thread-sleep! (random 5)) ;; give some time to settle and minimize collison?
(rmt:send-receive cmd rid params attemptnum: (+ attemptnum 1))))))
(define (rmt:update-db-stats run-id rawcmd params duration)
(mutex-lock! *db-stats-mutex*)
|
|
>
|
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
|
;; (if (eq? attemptnum 3)(tasks:kill-server-run-id run-id))
;; (thread-sleep! 2)
(rmt:send-receive cmd run-id params attemptnum: (+ attemptnum 1)))
(else
(debug:print-error 0 *default-log-port* "(3) Transport [" transport-type
"] specified for run-id [" run-id
"] is not implemented in rmt:send-receive. Cannot proceed.")
(exit 1))))))
;; no connection info; try to start a server
;;
;; Note: The tasks db was checked for a server in starting mode in the rmt:get-connection-info call
;;
(begin
(mutex-unlock! *rmt:srmutex*)
(tasks:start-and-wait-for-server (db:delay-if-busy (tasks:open-db)) run-id 10)
(thread-sleep! (random 5)) ;; give some time to settle and minimize collison?
(rmt:send-receive cmd rid params attemptnum: (+ attemptnum 1))))))
(define (rmt:update-db-stats run-id rawcmd params duration)
(mutex-lock! *db-stats-mutex*)
|