Megatest

Check-in [cd59e5a125]
Login
Overview
Comment:Added mtserv
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | v1.80-reshape
Files: files | file ages | folders
SHA1: cd59e5a125e30d7303d763976c8768f2ee126e5a
User & Date: matt on 2023-01-19 20:54:21
Other Links: branch diff | manifest | tags
Context
2023-01-20
07:30
Merged v1.80 check-in: 0859376e2d user: matt tags: v1.80-reshape
2023-01-19
20:54
Added mtserv check-in: cd59e5a125 user: matt tags: v1.80-reshape
19:52
Refactor start check-in: f7272f26b7 user: matt tags: v1.80-reshape
Changes

Modified Makefile from [dc6c1cabb4] to [628fbbf17d].

258
259
260
261
262
263
264












265
266
267
268
269
270
271
$(PREFIX)/bin/.$(ARCHSTR)/mtexec : mtexec
	$(INSTALL) mtexec $(PREFIX)/bin/.$(ARCHSTR)/mtexec

$(PREFIX)/bin/mtexec : $(PREFIX)/bin/.$(ARCHSTR)/mtexec utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) mtexec $(PREFIX)/bin/mtexec
	chmod a+x $(PREFIX)/bin/mtexec













# tcmt

$(PREFIX)/bin/.$(ARCHSTR)/tcmt : tcmt
	$(INSTALL) tcmt $(PREFIX)/bin/.$(ARCHSTR)/tcmt

$(PREFIX)/bin/tcmt : $(PREFIX)/bin/.$(ARCHSTR)/tcmt utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) tcmt $(PREFIX)/bin/tcmt







>
>
>
>
>
>
>
>
>
>
>
>







258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
$(PREFIX)/bin/.$(ARCHSTR)/mtexec : mtexec
	$(INSTALL) mtexec $(PREFIX)/bin/.$(ARCHSTR)/mtexec

$(PREFIX)/bin/mtexec : $(PREFIX)/bin/.$(ARCHSTR)/mtexec utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) mtexec $(PREFIX)/bin/mtexec
	chmod a+x $(PREFIX)/bin/mtexec

# mtserv

mtserv: $(OFILES) $(MOFILES) megatest-fossil-hash.scm mtserv.scm
	csc $(CSCOPTS) $(OFILES) $(MOFILES) mtserv.scm -o mtserv

$(PREFIX)/bin/.$(ARCHSTR)/mtserv : mtserv
	$(INSTALL) mtserv $(PREFIX)/bin/.$(ARCHSTR)/mtserv

$(PREFIX)/bin/mtserv : $(PREFIX)/bin/.$(ARCHSTR)/mtserv utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) mtserv $(PREFIX)/bin/mtserv
	chmod a+x $(PREFIX)/bin/mtserv

# tcmt

$(PREFIX)/bin/.$(ARCHSTR)/tcmt : tcmt
	$(INSTALL) tcmt $(PREFIX)/bin/.$(ARCHSTR)/tcmt

$(PREFIX)/bin/tcmt : $(PREFIX)/bin/.$(ARCHSTR)/tcmt utils/mk_wrapper
	utils/mk_wrapper $(PREFIX) tcmt $(PREFIX)/bin/tcmt

Added mtserv.scm version [0578a53675].





























































































































































































>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
; Copyright 2006-2017, 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/>.
;;

;; (include "common.scm")
;; (include "megatest-version.scm")

;; fake out readline usage of toplevel-command
(define (toplevel-command . a) #f)

(use srfi-1 posix srfi-69 readline ;;  regex regex-case srfi-69 apropos json http-client directory-utils rpc typed-records;; (srfi 18) extras)
   srfi-19  srfi-18 extras format pkts regex regex-case
     (prefix dbi dbi:)
     )

;; (declare (uses common))
(declare (uses margs))
(declare (uses configf))
;; (declare (uses rmt))

;; (use ducttape-lib)
(include "megatest-version.scm")
(include "megatest-fossil-hash.scm")

;; (require-library stml)

(define help (conc "
mtutil, part of the Megatest tool suite, documentation at http://www.kiatoa.com/fossils/megatest
  version " megatest-version "
  license GPL, Copyright Matt Welland 2006-2017

Usage: mtutil action [options]
  -h                         : this help
  -manual                    : show the Megatest user manual
  -version                   : print megatest version (currently " megatest-version ")
			     
Examples:

Called as " (string-intersperse (argv) " ") "
Version " megatest-version ", built from " megatest-fossil-hash ))
  ;; first token is our action, but only if no leading dash

(define *action* (if (and (> (length (argv)) 1)
                          (not (string-match "^\\-.*" (cadr (argv)))))
		     (cadr (argv))
		     #f))

(define *remargs*
  (args:get-args
 (if *action* (cdr (argv)) (argv))
 '("-log")
 '("-h")
 args:arg-hash
 0))

(if (args:get-arg "-h")
    (begin
      (print help)
      (exit)))

(if (or (args:get-arg "-repl")
	(args:get-arg "-load"))
    (begin
      (import extras) ;; might not be needed
      ;; (import csi)
      (import readline)
      (import apropos)
      ;; (import (prefix sqlite3 sqlite3:)) ;; doesn't work ...
      
      (install-history-file (get-environment-variable "HOME") ".mtutil_history") ;;  [homedir] [filename] [nlines])
      (current-input-port (make-readline-port "mtutil> "))
      (if (args:get-arg "-repl")
	  (repl)
	  (load (args:get-arg "-load")))))

#|
(define mtconf (car (simple-setup #f)))
(define dat (common:with-queue-db mtconf (lambda (conn)(get-pkts conn '()))))
(pp (pkts#flatten-all dat '((cmd . ((parent . P)(url . M)))(runtype . ((parent . P)))) 'id 'group-id 'uuid 'parent 'pkt-type 'pkt 'processed))
|#

Modified servermod.scm from [98edfd795f] to [8d400072b5].

16
17
18
19
20
21
22





























































































































































































































































































































































































































































































































































































































































































































































































































23
24
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.
;;

(declare (unit servermod))

(module servermod
*






























































































































































































































































































































































































































































































































































































































































































































































































































)







>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>
>


16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
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
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
;;     along with Megatest.  If not, see <http://www.gnu.org/licenses/>.
;;

(declare (unit servermod))

(module servermod
*

(import scheme
	chicken

	md5
	message-digest
	ports
	posix
	)

(define *client-server-id* #f)

;;======================================================================
;; S E R V E R   U T I L I T I E S 
;;======================================================================

;; Generate a unique signature for this server
(define (mk-signature)
  (message-digest-string (md5-primitive) 
			 (with-output-to-string
			   (lambda ()
			     (write (list (current-directory)
                                          (current-process-id)
					  (argv)))))))

(define (get-client-server-id)
  (if *client-server-id* *client-server-id*
      (let ((sig (mk-signature))) ;; clients re-use the server:mk-signature logic
        (set! *client-server-id* sig)
        *client-server-id*)))

;; ;; When using zmq this would send the message back (two step process)
;; ;; with spiffy or rpc this simply returns the return data to be returned
;; ;; 
;; (define (server:reply return-addr query-sig success/fail result)
;;   (debug:print-info 11 *default-log-port* "server:reply return-addr=" return-addr ", result=" result)
;;   ;; (send-message pubsock target send-more: #t)
;;   ;; (send-message pubsock 
;;   (case (server:get-transport)
;;     ((rpc)  (db:obj->string (vector success/fail query-sig result)))
;;     ((http) (db:obj->string (vector success/fail query-sig result)))
;;     ((fs)   result)
;;     (else 
;;      (debug:print-error 0 *default-log-port* "unrecognised transport type: " *transport-type*)
;;      result)))
;; 
;; ;; Given an area path,  start a server process    ### NOTE ### > file 2>&1 
;; ;; if the target-host is set 
;; ;; try running on that host
;; ;;   incidental: rotate logs in logs/ dir.
;; ;;
;; (define  (server:run areapath) ;; areapath is *toppath* for a given testsuite area
;;   (let* ((testsuite   (common:get-testsuite-name))
;; 	 (logfile     (conc areapath "/logs/server.log")) ;; -" curr-pid "-" target-host ".log"))
;; 	 (profile-mode (or (configf:lookup *configdat* "misc" "profilesw")
;; 			   ""))
;; 	 (cmdln (conc (common:get-megatest-exe)
;; 		      " -server - ";; (or target-host "-")
;; 		      (if (equal? (configf:lookup *configdat* "server" "daemonize") "yes")
;; 			  " -daemonize "
;; 			  "")
;; 		      ;; " -log " logfile
;; 		      " -m testsuite:" testsuite
;; 		      " " profile-mode
;; 		      )) ;; (conc " >> " logfile " 2>&1 &")))))
;; 	 (log-rotate  (make-thread common:rotate-logs  "server run, rotate logs thread")) ;; why are we rotating logs here? This is a sensitive location with a lot going on!?
;;          (load-limit  (configf:lookup-number *configdat* "jobtools" "max-server-start-load" default: 3.0)))
;;     ;; we want the remote server to start in *toppath* so push there
;;     (push-directory areapath)
;;     (debug:print 0 *default-log-port* "INFO: Trying to start server (" cmdln ") ...")
;;     (thread-start! log-rotate)
;;     
;;     ;; host.domain.tld match host?
;;     ;; (if (and target-host 
;;     ;; 	     ;; look at target host, is it host.domain.tld or ip address and does it 
;;     ;; 	     ;; match current ip or hostname
;;     ;; 	     (not (string-match (conc "("curr-host "|" curr-host"\\..*)") target-host))
;;     ;; 	     (not (equal? curr-ip target-host)))
;;     ;; 	(begin
;;     ;; 	  (debug:print-info 0 *default-log-port* "Starting server on " target-host ", logfile is " logfile)
;;     ;; 	  (setenv "TARGETHOST" target-host)))
;;     ;;   
;;     (setenv "TARGETHOST_LOGF" logfile)
;;     (thread-sleep! (/ (random 3000) 1000)) ;; add a random initial delay. It seems pretty common that many running tests request a server at the same time
;;     (debug:print 0 *default-log-port* "INFO: starting server at " (common:human-time))
;;     (system (conc "nbfake " cmdln))
;;     (unsetenv "TARGETHOST_LOGF")
;;     ;; (if (get-environment-variable "TARGETHOST")(unsetenv "TARGETHOST"))
;;     (thread-join! log-rotate)
;;     (pop-directory)))
;; 
;; ;; given a path to a server log return: host port startseconds server-id
;; ;; any changes to number of elements returned by this fuction will dirctly affect server:record->url,server:record->id,server:kill,server:get-num-alive which use match let 
;; ;; example of what it's looking for in the log file:
;; ;;     SERVER STARTED: 10.38.175.67:50216 AT 1616502350.0 server-id: 4907e90fc55c7a09694e3f658c639cf4 
;; 
;; (define (server:logf-get-start-info logf)
;;   (let ((server-rx    (regexp "^SERVER STARTED: (\\S+):(\\d+) AT ([\\d\\.]+) server-id: (\\S+) pid: (\\d+)")) ;; SERVER STARTED: host:port AT timesecs server id
;;         (dbprep-rx    (regexp "^SERVER: dbprep"))
;;         (dbprep-found 0)
;; 	(bad-dat      (list #f #f #f #f #f)))
;;     (handle-exceptions
;;      exn
;;      (begin
;;        ;; WARNING: this is potentially dangerous to blanket ignore the errors
;;        (if (file-exists? logf)
;; 	   (debug:print-info 2 *default-log-port* "Unable to get server info from "logf", exn=" exn))
;;        bad-dat) ;; no idea what went wrong, call it a bad server
;;      (with-input-from-file
;; 	 logf
;;        (lambda ()
;; 	 (let loop ((inl  (read-line))
;; 		    (lnum 0))
;; 	   (if (not (eof-object? inl))
;; 	       (let ((mlst (string-match server-rx inl))
;; 		     (dbprep (string-match dbprep-rx inl)))
;; 		 (if dbprep (set! dbprep-found 1))
;; 		 (if (not mlst)
;; 		     (if (< lnum 500) ;; give up if more than 500 lines of server log read
;; 			 (loop (read-line)(+ lnum 1))
;; 			 (begin 
;;                            (debug:print-info 0 *default-log-port* "Unable to get server info from first 500 lines of " logf )
;;                            bad-dat))
;; 		     (match mlst
;; 			    ((_ host port start server-id pid)
;; 			     (list host
;; 				   (string->number port)
;; 				   (string->number start)
;; 				   server-id
;; 				   (string->number pid)))
;; 			    (else
;; 			     (debug:print 0 *current-log-port* "ERROR: did not recognise SERVER line info "mlst)
;; 			     bad-dat))))
;; 	       (begin 
;; 		 (if dbprep-found
;; 		     (begin
;; 		       (debug:print-info 2 *default-log-port* "Server is in dbprep at " (common:human-time))
;; 		       (thread-sleep! 0.5)) ;; was 25 sec but that blocked things from starting?
;; 		     (debug:print-info 0 *default-log-port* "Unable to get server info from " logf " at " (seconds->time-string (current-seconds))))
;; 		 bad-dat))))))))
;; 
;; ;; ;; get a list of servers from the log files, with all relevant data
;; ;; ;; ( mod-time host port start-time pid )
;; ;; ;;
;; ;; (define (server:get-list areapath #!key (limit #f))
;; ;;   (let ((fname-rx    (regexp "^(|.*/)server-(\\d+)-(\\S+).log$"))
;; ;; 	(day-seconds (* 24 60 60)))
;; ;;     ;; if the directory exists continue to get the list
;; ;;     ;; otherwise attempt to create the logs dir and then
;; ;;     ;; continue
;; ;;     (if (if (directory-exists? (conc areapath "/logs"))
;; ;; 	    '()
;; ;; 	    (if (file-write-access? areapath)
;; ;; 		(begin
;; ;; 		  (condition-case
;; ;; 		   (create-directory (conc areapath "/logs") #t)
;; ;; 		   (exn (i/o file)(debug:print 0 *default-log-port* "ERROR: Cannot create directory at " (conc areapath "/logs")))
;; ;; 		   (exn ()(debug:print 0 *default-log-port* "ERROR: Unknown error attemtping to get server list. exn=" exn)))
;; ;; 		  (directory-exists? (conc areapath "/logs")))
;; ;; 		'()))
;; ;; 
;; ;;         ;; Get the list of server logs.
;; ;; 	(let* (
;; ;;                ;; For some reason, when I uncomment the below line, ext-tests sometimes starts 1000's of servers.
;; ;;                ;; (exiting-servers (system (conc "bash -c 'rm -f `grep -il exiting " areapath "/logs/server-*-*.log 2> /dev/null`'")))
;; ;;                (server-logs   (glob (conc areapath "/logs/server-*-*.log")))
;; ;; 	       (num-serv-logs (length server-logs)))
;; ;; 	  (if (or (null? server-logs) (= num-serv-logs 0))
;; ;;               (let ()
;; ;;                  (debug:print 2  *default-log-port* "There are no servers running at " (common:human-time))
;; ;; 	         '()
;; ;;               )
;; ;; 	      (let loop ((hed  (string-chomp (car server-logs)))
;; ;; 			 (tal  (cdr server-logs))
;; ;; 			 (res '()))
;; ;; 		(let* ((mod-time  (handle-exceptions
;; ;; 				   exn
;; ;; 				   (begin
;; ;; 				     (debug:print 0 *default-log-port* "server:get-list: failed to get modification time on " hed ", exn=" exn)
;; ;; 				     (current-seconds)) ;; 0
;; ;; 				   (file-modification-time hed))) ;; default to *very* old so log gets ignored if deleted
;; ;; 		       (down-time (- (current-seconds) mod-time))
;; ;; 		       (serv-dat  (if (or (< num-serv-logs 10)
;; ;; 				  	  (< down-time 900)) ;; day-seconds))
;; ;; 				      (server:logf-get-start-info hed)
;; ;; 				      '())) ;; don't waste time processing server files not touched in the 15 minutes if there are more than ten servers to look at
;; ;; 		       (serv-rec (cons mod-time serv-dat))
;; ;; 		       (fmatch   (string-match fname-rx hed))
;; ;; 		       (pid      (if fmatch (string->number (list-ref fmatch 2)) #f))
;; ;; 		       (new-res  (if (null? serv-dat)
;; ;; 				     res
;; ;; 				     (cons (append serv-rec (list pid)) res)))) ;; any changes to number of elements in new-res will dirctly affect server:record->url,server:record->id,server:kill,server:get-num-alive which uses match let 
;; ;; 		  (if (null? tal)
;; ;; 		      (if (and limit
;; ;; 			       (> (length new-res) limit))
;; ;; 			  new-res ;; (take new-res limit)  <= need intelligent sorting before this will work
;; ;; 			  new-res)
;; ;; 		      (loop (string-chomp (car tal)) (cdr tal) new-res)))))))))
;; 
;; #;(define (server:get-num-alive srvlst)
;;   (let ((num-alive 0))
;;     (for-each
;;      (lambda (server)
;;         (handle-exceptions
;;           exn
;;          (begin 
;;           (debug:print-info 0 *default-log-port*  "Unable to get server start-time and/or mod-time from " server ", exn=" exn))
;;        (match-let (((mod-time host port start-time server-id pid)
;; 		    server))
;; 	 (let* ((uptime  (- (current-seconds) mod-time))
;; 		(runtime (if start-time
;; 			     (- mod-time start-time)
;; 			     0)))
;; 	   (if (< uptime 5)(set! num-alive (+ num-alive 1)))))))
;;      srvlst)
;;     num-alive))
;; 
;; ;; ;; given a list of servers get a list of valid servers, i.e. at least
;; ;; ;; 10 seconds old, has started and is less than 1 hour old and is
;; ;; ;; active (i.e. mod-time < 10 seconds
;; ;; ;;
;; ;; ;; mod-time host port start-time pid
;; ;; ;;
;; ;; ;; sort by start-time descending. I.e. get the oldest first. Young servers will thus drop off
;; ;; ;; and servers should stick around for about two hours or so.
;; ;; ;;
;; ;; (define (server:get-best srvlst)
;; ;;   (let* ((nums (server:get-num-servers))
;; ;; 	 (now  (current-seconds))
;; ;; 	 (slst (sort
;; ;; 		(filter (lambda (rec)
;; ;; 			  (if (and (list? rec)
;; ;; 				   (> (length rec) 2))
;; ;; 			      (let ((start-time (list-ref rec 3))
;; ;; 				    (mod-time   (list-ref rec 0)))
;; ;; 				;; (print "start-time: " start-time " mod-time: " mod-time)
;; ;; 				(and start-time mod-time
;; ;; 				     (> (- now start-time) 0)    ;; been running at least 0 seconds
;; ;; 				     (< (- now mod-time)   16)   ;; still alive - file touched in last 16 seconds
;; ;; 				     (or (not (configf:lookup *configdat* "server" "runtime")) ;; skip if not set
;; ;; 					 (< (- now start-time)       
;; ;; 					    (+ (- (string->number (configf:lookup *configdat* "server" "runtime"))
;; ;; 					       180)
;; ;; 					    (random 360)))) ;; under one hour running time +/- 180
;; ;; 				     ))
;; ;; 			      #f))
;; ;; 			srvlst)
;; ;; 		(lambda (a b)
;; ;; 		  (< (list-ref a 3)
;; ;; 		     (list-ref b 3))))))
;; ;;     (if (> (length slst) nums)
;; ;; 	(take slst nums)
;; ;; 	slst)))
;; 
;; ;; ;; switch from server:get-list to server:get-servers-info
;; ;; ;;
;; ;; (define (server:get-first-best areapath)
;; ;;   (let ((srvrs (server:get-best (server:get-list areapath))))
;; ;;     (if (and srvrs
;; ;; 	     (not (null? srvrs)))
;; ;; 	(car srvrs)
;; ;; 	#f)))
;; ;; 
;; ;; (define (server:get-rand-best areapath)
;; ;;   (let ((srvrs (server:get-best (server:get-list areapath))))
;; ;;     (if (and (list? srvrs)
;; ;; 	     (not (null? srvrs)))
;; ;; 	(let* ((len (length srvrs))
;; ;; 	       (idx (random len)))
;; ;; 	  (list-ref srvrs idx))
;; ;; 	#f)))
;; 
;; (define (server:record->id servr)
;;   (handle-exceptions
;;    exn
;;    (begin 
;;      (debug:print-info 0 *default-log-port*  "Unable to get server id from " servr ", exn=" exn)     
;;    #f)
;;   (match-let (((host port start-time server-id pid)
;; 	       servr))
;;     (if server-id
;; 	server-id
;; 	#f))))
;; 
;; (define (server:record->url servr)
;;   (handle-exceptions
;;    exn
;;    (begin 
;;      (debug:print-info 0 *default-log-port*  "Unable to get server url from " servr ", exn=" exn)     
;;    #f)
;;   (match-let (((host port start-time server-id pid)
;; 	       servr))
;;     (if (and host port)
;; 	(conc host ":" port)
;; 	#f))))
;; 
;; 
;; ;; if server-start-last exists, and wasn't old enough, wait <idle time> + 1, then call this function recursively until it is old enough.
;; ;; if it is old enough, overwrite it and wait 0.25 seconds.
;; ;; if it then has the wrong server key, wait <idle time> + 1 and call this function recursively.
;; ;;
;; #;(define (server:wait-for-server-start-last-flag areapath)
;;   (let* ((start-flag (conc areapath "/logs/server-start-last"))
;; 	 ;;; THIS INTERACTS WITH [server] timeout. Suggest using 0.1 or above for timeout (6 seconds)
;; 	 (idletime    (configf:lookup-number *configdat* "server" "idletime" default: 4))
;; 	 (server-key (conc (get-host-name) "-" (current-process-id))))
;;     (if (file-exists? start-flag)
;; 	(let* ((fmodtime (file-modification-time start-flag))
;; 	       (delta    (- (current-seconds) fmodtime))
;; 	       (old-enough   (> delta idletime))
;;                (new-server-key ""))
;;           ;; write start-flag file, wait 0.25s, then if previously the start-flag file was older than <idletime> seconds, and the new file still has the same server key as you just wrote, return #t.
;; 	  ;; the intention is to make sure nfs can read the file we just wrote, and make sure it was written by us, and not another process.
;;            (if (and old-enough
;; 		    (begin
;;                       (debug:print-info 2 *default-log-port* "Writing " start-flag)
;; 		      (with-output-to-file start-flag (lambda () (print server-key)))
;; 		      (thread-sleep! 0.25)
;; 		      (set! new-server-key (with-input-from-file start-flag (lambda () (read-line))))
;; 		      (equal? server-key new-server-key)))
;; 	       #t
;;                ;; If either of the above conditions is not true, print a "Gating server start" message, wait <idle-time> + 1, then call this function recursively. 
;; 	       (begin
;; 		 (debug:print-info 0 *default-log-port* "Gating server start, last start: "
;; 				   (seconds->time-string fmodtime) ", time since last start: " delta ", required idletime: " idletime ", gating reason:" (if old-enough "another job started a server" "too soon to start another server"))
;; 		 
;; 		 (thread-sleep! ( + 1 idletime))
;; 		 (server:wait-for-server-start-last-flag areapath)))))))
;; 
;; ;; oldest server alive determines host then choose random of youngest
;; ;; five servers on that host
;; ;;
;; (define (server:get-servers-info areapath)
;;   ;; (assert *toppath* "FATAL: server:get-servers-info called before *toppath* has been set.")
;;   (let* ((servinfodir (server:get-servinfo-dir areapath))) ;; (conc *toppath*"/.servinfo")))
;;     (if (not (file-exists? servinfodir))
;; 	(create-directory servinfodir))
;;     (let* ((allfiles    (glob (conc servinfodir"/*")))
;; 	   (res         (make-hash-table)))
;;       (for-each
;;        (lambda (f)
;; 	 (let* ((hostport  (pathname-strip-directory f))
;; 		(serverdat (server:logf-get-start-info f)))
;; 	   (match serverdat
;; 	     ((host port start server-id pid)
;; 	      (if (and host port start server-id pid)
;; 		  (hash-table-set! res hostport serverdat)
;; 		  (debug:print-info 2 *default-log-port* "bad server info for "f": "serverdat)))
;; 	     (else
;; 	      (debug:print-info 2 *default-log-port* "bad server info for "f": "serverdat)))))
;;        allfiles)
;;       res)))
;; 
;; ;; check the .servinfo directory, are there other servers running on this
;; ;; or another host?
;; ;;
;; ;; returns #t => ok to start another server
;; ;;         #f => not ok to start another server
;; ;;
;; (define (server:minimal-check areapath)
;;   (server:clean-up-old areapath)
;;   (let* ((srvdir      (server:get-servinfo-dir areapath)) ;; (conc areapath"/.servinfo"))
;; 	 (servrs      (glob (conc srvdir"/*")))
;; 	 (thishostip  (server:get-best-guess-address (get-host-name)))
;; 	 (thisservrs  (glob (conc srvdir"/"thishostip":*")))
;; 	 (homehostinf (server:choose-server areapath 'homehost))
;; 	 (havehome    (car homehostinf))
;; 	 (wearehome   (cdr homehostinf)))
;;     (debug:print-info 0 *default-log-port* thishostip", have homehost: "havehome", we are homehost: "wearehome
;; 		      ", numservers: "(length thisservrs))
;;     (cond
;;      ((not havehome) #t) ;; no homehost yet, go for it
;;      ((and havehome wearehome (< (length thisservrs) 20)) #t) ;; we are home and less than 20 servers, ok to start another
;;      ((and havehome (not wearehome)) #f)     ;; we are not the home host
;;      ((and havehome wearehome (>= (length thisservrs) 20)) #f) ;; have enough running
;;      (else
;;       (debug:print 0 *default-log-port* "WARNING: Unrecognised scenario, servrs="servrs", thishostip="thishostip", thisservrs="thisservrs)
;;       #t))))
;; 	 
;; 
;; (define server-last-start 0)
;; 
;; 
;; ;; oldest server alive determines host then choose random of youngest
;; ;; five servers on that host
;; ;;
;; ;; mode:
;; ;;   best - get best server (random of newest five)
;; ;;   home - get home host based on oldest server
;; ;;   info - print info
;; (define (server:choose-server areapath #!optional (mode 'best))
;;   ;; age is current-starttime
;;   ;; find oldest alive
;;   ;;   1. sort by age ascending and ping until good
;;   ;; find alive rand from youngest
;;   ;;   1. sort by age descending
;;   ;;   2. take five
;;   ;;   3. check alive, discard if not and repeat
;;   ;; first we clean up old server files
;;   (server:clean-up-old areapath)
;;   (let* ((since-last (- (current-seconds) server-last-start))
;;         (server-start-delay 10))     
;;     (if ( < (- (current-seconds) server-last-start) 10 )
;;       (begin
;;         (debug:print 2 *default-log-port* "server:choose-server: seconds since last server start: " (- (current-seconds) server-last-start))
;;         (debug:print 2 *default-log-port* "server:choose-server: last server start less than " server-start-delay " seconds ago. Sleeping " server-start-delay " seconds")
;;         (thread-sleep! server-start-delay)
;;       )
;;       (debug:print 2 *default-log-port* "server:choose-server: seconds since last server start: " (- (current-seconds) server-last-start))
;;     )
;;   )
;;   (let* ((serversdat  (server:get-servers-info areapath))
;; 	 (servkeys    (hash-table-keys serversdat))
;; 	 (by-time-asc (if (not (null? servkeys)) ;; NOTE: Oldest is last
;; 			  (sort servkeys ;; list of "host:port"
;; 				(lambda (a b)
;; 				  (>= (list-ref (hash-table-ref serversdat a) 2)
;; 				      (list-ref (hash-table-ref serversdat b) 2))))
;; 			  '())))
;;     (debug:print 2 *default-log-port* "server:choose-server: serversdat: " serversdat)
;;     (debug:print 2 *default-log-port* "server:choose-server: servkeys: " servkeys)
;;     (if (not (null? by-time-asc))
;; 	(let* ((oldest     (last by-time-asc))
;; 	       (oldest-dat (hash-table-ref serversdat oldest))
;; 	       (host       (list-ref oldest-dat 0))
;; 	       (all-valid  (filter (lambda (x)
;; 				     (equal? host (list-ref (hash-table-ref serversdat x) 0)))
;; 				   by-time-asc))
;; 	       (best-ten  (lambda ()
;; 			     (if (> (length all-valid) 11)
;; 				 (take (drop-right all-valid 1) 10) ;; remove the oldest from consideration so it can age out
;; 				 (if (> (length all-valid) 8)
;; 				     (drop-right all-valid 1)
;; 				     all-valid))))
;; 	       (names->dats (lambda (names)
;; 			      (map (lambda (x)
;; 				     (hash-table-ref serversdat x))
;; 				   names)))
;; 	       (am-home?    (lambda ()
;; 			      (let* ((currhost (get-host-name))
;; 				     (bestadrs (server:get-best-guess-address currhost)))
;; 				(or (equal? host currhost)
;; 				    (equal? host bestadrs))))))
;; 	  (case mode
;; 	    ((info)
;; 	     (print "oldest: "oldest-dat", selected host: "host", all-valid: "all-valid)
;; 	     (print "youngest: "(hash-table-ref serversdat (car all-valid))))
;; 	    ((home)     host)
;; 	    ((homehost) (cons host (am-home?))) ;; shut up old code
;; 	    ((home?)    (am-home?))
;; 	    ((best-ten)(names->dats (best-ten)))
;; 	    ((all-valid)(names->dats all-valid))
;; 	    ((best)     (let* ((best-ten (best-ten))
;; 			       (len       (length best-ten)))
;; 			  (hash-table-ref serversdat (list-ref best-ten (random len)))))
;; 	    ((count)(length all-valid))
;; 	    (else
;; 	     (debug:print 0 *default-log-port* "ERROR: invalid command "mode)
;; 	     #f)))
;; 	(begin
;; 	  (server:run areapath)
;;           (set! server-last-start (current-seconds))
;; 	  ;; (thread-sleep! 3)
;; 	  (case mode
;; 	    ((homehost) (cons #f #f))
;; 	    (else	#f))))))
;; 
;; (define (server:get-servinfo-dir areapath)
;;   (let* ((spath (conc areapath"/.servinfo")))
;;     (if (not (file-exists? spath))
;; 	(create-directory spath #t))
;;     spath))
;; 
;; (define (server:clean-up-old areapath)
;;   ;; any server file that has not been touched in ten minutes is effectively dead
;;   (let* ((sfiles (glob (conc (server:get-servinfo-dir areapath)"/*"))))
;;     (for-each
;;      (lambda (sfile)
;;        (let* ((modtime (handle-exceptions
;; 			   exn
;; 			 (begin
;; 			   (debug:print 0 *default-log-port* "WARNING: failed to get modification file for "sfile)
;; 			   (current-seconds))
;; 			 (file-modification-time sfile))))
;; 	 (if (and (number? modtime)
;; 		  (> (- (current-seconds) modtime)
;; 		     600))
;; 	     (begin
;; 	       (debug:print 0 *default-log-port* "WARNING: found old server info file "sfile", removing it.")
;; 	       (handle-exceptions
;; 		   exn
;; 		 (debug:print 0 *default-log-port* "WARNING: failed to delete old server info file "sfile)
;; 		 (delete-file sfile))))))
;;      sfiles)))
;; 
;; ;; would like to eventually get rid of this
;; ;;
;; (define (common:on-homehost?)
;;   (server:choose-server *toppath* 'home?))
;; 
;; ;; kind start up of server, wait before allowing another server for a given
;; ;; area to be launched
;; ;;
;; (define (server:kind-run areapath)
;;   ;; look for $MT_RUN_AREA_HOME/logs/server-start-last
;;   ;; and wait for it to be at least <server idletime> seconds old
;;   ;; (server:wait-for-server-start-last-flag areapath)
;;   (let loop ()
;;     (if (> (alist-ref 'adj-proc-load (common:get-normalized-cpu-load #f)) 2)
;; 	(begin
;; 	  (if (common:low-noise-print 30 "our-host-load")
;; 	      (debug:print 0 *default-log-port* "WARNING: system load is high, waiting to start server."))
;; 	  (loop))))
;;   (if (< (server:choose-server areapath 'count) 20)
;;       (server:run areapath))
;;   #;(if (not (server:check-if-running areapath)) ;; why try if there is already a server running?
;;       (let* ((lock-file    (conc areapath "/logs/server-start.lock")))
;; 	(let* ((start-flag (conc areapath "/logs/server-start-last")))
;; 	  (common:simple-file-lock-and-wait lock-file expire-time: 25)
;; 	  (debug:print-info  2 *default-log-port* "server:kind-run: touching " start-flag)
;; 	  (system (conc "touch " start-flag)) ;; lazy but safe
;; 	  (server:run areapath)
;; 	  (thread-sleep! 20) ;; don't release the lock for at least a few seconds. And allow time for the server startup to get to "SERVER STARTED".
;; 	  (common:simple-file-release-lock lock-file)))
;;       (debug:print-info 0 *default-log-port* "Found server already running. NOT trying to start another.")))
;; 
;; ;; this one seems to be the general entry point
;; ;;
;; (define (server:start-and-wait areapath #!key (timeout 60))
;;   (let ((give-up-time (+ (current-seconds) timeout)))
;;     (let loop ((server-info (server:check-if-running areapath))
;; 	       (try-num    0))
;;       (if (or server-info
;; 	      (> (current-seconds) give-up-time)) ;; server-url will be #f if no server available.
;; 	  (server:record->url server-info)
;; 	  (let* ( (servers (server:choose-server areapath 'all-valid))
;;                 (num-ok (if servers (length (server:choose-server areapath 'all-valid)) 0)))
;; 	    (if (and (> try-num 0)  ;; first time through simply wait a little while then try again
;; 		     (< num-ok 1))  ;; if there are no decent candidates for servers then try starting a new one
;; 		(server:run areapath))
;; 	    (thread-sleep! 5)
;; 	    (loop (server:check-if-running areapath)
;; 		  (+ try-num 1)))))))
;; 
;; (define (server:get-num-servers #!key (numservers 2))
;;   (let ((ns (string->number
;; 	     (or (configf:lookup *configdat* "server" "numservers") "notanumber"))))
;;     (or ns numservers)))
;; 
;; ;; no longer care if multiple servers are started by accident. older servers will drop off in time.
;; ;;
;; (define (server:check-if-running areapath) ;;  #!key (numservers "2"))
;;   (let* ((ns            (server:get-num-servers)) ;; get the setting the for maximum number of servers allowed
;; 	 (servers       (server:choose-server areapath 'best-ten))) ;; (server:get-best (server:get-list areapath))))
;;     (if (or (and servers
;; 		 (null? servers))
;; 	    (not servers))
;; 	    ;; (and (list? servers)
;; 	    ;;	 (< (length servers) (+ 1 (random ns))))) ;; somewhere between 1 and numservers
;;         #f
;;         (let loop ((hed (car servers))
;;                    (tal (cdr servers)))
;;           (let ((res (server:check-server hed)))
;;             (if res
;;                 hed
;;                 (if (null? tal)
;;                     #f
;;                     (loop (car tal)(cdr tal)))))))))
;; 
;; ;; ping the given server
;; ;;
;; (define (server:check-server server-record)
;;   (let* ((server-url (server:record->url server-record))
;;          (server-id  (server:record->id server-record)) 
;;          (res        (server:ping server-url server-id)))
;;     (if res
;;         server-url
;; 	#f)))
;; 
;; (define (server:kill servr)
;;   (handle-exceptions
;;     exn
;;     (begin 
;;       (debug:print-info 0 *default-log-port*  "Unable to get host and/or port from " servr ", exn=" exn)     
;;     #f)
;;   (match-let (((mod-time hostname port start-time server-id pid)
;; 	       servr))
;;     (tasks:kill-server hostname pid))))
;; 
;; ;; called in megatest.scm, host-port is string hostname:port
;; ;;
;; ;; NOTE: This is NOT called directly from clients as not all transports support a client running
;; ;;       in the same process as the server.
;; ;;
;; (define (server:ping host:port server-id #!key (do-exit #f))
;;   (let* ((host-port (cond
;; 		     ((string? host:port)
;; 		      (let ((slst (string-split   host:port ":")))
;; 			(if (eq? (length slst) 2)
;; 			    (list (car slst)(string->number (cadr slst)))
;; 			    #f)))
;; 		     (else
;; 		      #f))))
;;     (cond
;;      ((and (list? host-port)
;; 	   (eq? (length host-port) 2))
;;       (let* ((myrunremote (make-remote))
;; 	     (iface       (car host-port))
;; 	     (port        (cadr host-port))
;; 	     (server-dat  (client:connect iface port server-id myrunremote))
;; 	     (login-res   (rmt:login-no-auto-client-setup myrunremote)))
;; 	(if (and (list? login-res)
;; 		 (car login-res))
;; 	    (begin
;; 	      ;; (print "LOGIN_OK")
;; 	      (if do-exit (exit 0))
;; 	      #t)
;; 	    (begin
;; 	      ;; (print "LOGIN_FAILED")
;; 	      (if do-exit (exit 1))
;; 	      #f))))
;;      (else 
;;       (if host:port
;; 	  (debug:print 0 *default-log-port*  "ERROR: bad host:port "host:port))
;;       (if do-exit
;; 	  (exit 1)
;; 	  #f)))))
;; 
;; ;; run ping in separate process, safest way in some cases
;; ;;
;; (define (server:ping-server ifaceport)
;;   (with-input-from-pipe 
;;    (conc (common:get-megatest-exe) " -ping " ifaceport)
;;    (lambda ()
;;      (let loop ((inl (read-line))
;; 		(res "NOREPLY"))
;;        (if (eof-object? inl)
;; 	   (case (string->symbol res)
;; 	     ((NOREPLY)  #f)
;; 	     ((LOGIN_OK) #t)
;; 	     (else       #f))
;; 	   (loop (read-line) inl))))))
;; 
;; ;; NOT USED (well, ok, reference in rpc-transport but otherwise not used).
;; ;;
;; (define (server:login toppath)
;;   (lambda (toppath)
;;     (set! *db-last-access* (current-seconds)) ;; might not be needed.
;;     (if (equal? *toppath* toppath)
;; 	#t
;; 	#f)))
;; 
;; ;; timeout is hms string: 1h 5m 3s, default is 1 minute
;; ;; This is currently broken. Just use the number of hours with no unit.
;; ;; Default is 60 seconds.
;; ;;
;; (define (server:expiration-timeout)
;;   (let ((tmo (configf:lookup *configdat* "server" "timeout")))
;;     (if (and (string? tmo)
;; 	     (common:hms-string->seconds tmo)) ;; BUG: hms-string->seconds is broken, if given "10" returns 0. Also, it doesn't belong in this logic unless the string->number is changed below
;;         (* 3600 (string->number tmo))
;; 	600)))
;; 
;; (define (server:get-best-guess-address hostname)
;;   (let ((res #f))
;;     (for-each 
;;      (lambda (adr)
;;        (if (not (eq? (u8vector-ref adr 0) 127))
;; 	   (set! res adr)))
;;      ;; NOTE: This can fail when there is no mention of the host in /etc/hosts. FIXME
;;      (vector->list (hostinfo-addresses (hostname->hostinfo hostname))))
;;     (string-intersperse 
;;      (map number->string
;; 	  (u8vector->list
;; 	   (if res res (hostname->ip hostname)))) ".")))
;; 
;; ;; (define server:sync-lock-token "SERVER_SYNC_LOCK")
;; ;; (define (server:release-sync-lock)
;; ;;   (db:no-sync-del! *no-sync-db* server:sync-lock-token))
;; ;; (define (server:have-sync-lock?)
;; ;;   (let* ((have-lock-pair (db:no-sync-get-lock *no-sync-db* server:sync-lock-token))
;; ;;          (have-lock?     (car have-lock-pair))
;; ;;          (lock-time      (cdr have-lock-pair))
;; ;;          (lock-age       (- (current-seconds) lock-time)))
;; ;;     (cond
;; ;;      (have-lock? #t)
;; ;;      ((>lock-age
;; ;;        (* 3 (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: 180)))
;; ;;       (server:release-sync-lock)
;; ;;       (server:have-sync-lock?))
;; ;;      (else #f))))
;; 
;; ;; moving this here as it needs access to db and cannot be in common.
;; ;;
;; 
;; (define (server:get-bruteforce-syncer dbstruct #!key (fork-to-background #f) (persist-until-sync #f))
;;   (debug:print "WARNING: bruteforce-syncer is called but has been disabled!")
;;   (lambda ()
;;     (debug:print "WARNING: bruteforce-syncer is called but has been disabled!"))
;;   #;(let* ((sqlite-exe   (or (get-environment-variable "MT_SQLITE3_EXE"))) ;; defined in cfg.sh
;;          (sync-log     (or (args:get-arg "-sync-log") (conc *toppath* "/logs/sync-" (current-process-id) "-" (get-host-name) ".log")))
;; 	 (tmp-area     (common:get-db-tmp-area))
;; 	 (tmp-db       (conc tmp-area "/megatest.db"))
;; 	 (staging-file (conc *toppath* "/.megatest.db"))
;; 	 (mtdbfile     (conc *toppath* "/megatest.db"))
;; 	 (lockfile     (common:get-sync-lock-filepath))
;;          (sync-cmd-core     (conc sqlite-exe" " tmp-db " .dump | "sqlite-exe" " staging-file "&>"sync-log))
;;          (sync-cmd     (if fork-to-background 
;;                            (conc "/usr/bin/env NBFAKE_LOG="*toppath*"/logs/last-server-sync-"(current-process-id)".log nbfake \""sync-cmd-core" && /bin/mv -f " staging-file " " mtdbfile" \"")
;;                            sync-cmd-core))
;;          (default-min-intersync-delay 2)
;; 	 (min-intersync-delay (configf:lookup-number *configdat* "server" "minimum-intersync-delay" default: default-min-intersync-delay))
;;          (default-duty-cycle 0.1)
;;          (duty-cycle   (configf:lookup-number *configdat* "server" "sync-duty-cycle" default: default-duty-cycle))
;;          (last-sync-seconds 10) ;; we will adjust this to a measurement and delay last-sync-seconds * (1 - duty-cycle)
;;          (calculate-off-time (lambda (work-duration duty-cycle)
;;                                   (* (/ (- 1 duty-cycle) duty-cycle) last-sync-seconds)))
;;          (off-time min-intersync-delay) ;; adjusted in closure below.
;;          (do-a-sync
;;           (lambda ()
;;             (BB> "Start do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync)
;;             (let* ((finalres
;;                     (let retry-loop ((num-tries 0))
;;                          (if (common:simple-file-lock lockfile)
;; 	                     (begin
;;                                (cond
;;                                 ((not (or fork-to-background persist-until-sync))
;;                                  (debug:print 0 *default-log-port* "INFO: syncer thread sleeping for max of (server.minimum-intersync-delay="min-intersync-delay
;;                                               " , off-time="off-time" seconds ]")
;;                                  (thread-sleep! (max off-time min-intersync-delay)))
;;                                 (else
;;                                  (debug:print 0 *default-log-port* "INFO: syncer thread NOT sleeping ; maybe time-to-exit...")))
;; 
;;                                (if (not (configf:lookup *configdat* "server" "disable-db-snapshot"))
;;                                    (common:snapshot-file mtdbfile subdir: ".db-snapshot"))
;; 		               (delete-file* staging-file)
;; 		               (let* ((start-time (current-milliseconds))
;;                                       (res (system sync-cmd))
;;                                       (dbbackupfile (conc mtdbfile ".backup"))
;;                                       (res2 
;;                                        (cond
;;                                         ((eq? 0 res )
;;                                          (handle-exceptions
;;                                             exn
;;                                             #f
;;                                          (if (file-exists? dbbackupfile)
;; 		                           (delete-file* dbbackupfile)
;;                                          )
;;                                          (if (eq? 0 (file-size sync-log))
;;                                              (delete-file* sync-log))
;; 		                         (system (conc "/bin/mv " staging-file " " mtdbfile))
;;                                          
;;                                          (set! last-sync-seconds (/ (- (current-milliseconds) start-time) 1000))
;;                                          (set! off-time (calculate-off-time
;;                                                          last-sync-seconds
;;                                                          (cond
;;                                                           ((and (number? duty-cycle) (> duty-cycle 0) (< duty-cycle 1))
;;                                                            duty-cycle)
;;                                                           (else
;;                                                            (debug:print 0 *default-log-port* "WARNING: ["(common:human-time)"] server.sync-duty-cycle is invalid.  Should be a number between 0 and 1, but "duty-cycle" was specified.  Using default value: "default-duty-cycle)
;;                                                            default-duty-cycle))))
;;                                          
;;                                          (debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" SYNC took "last-sync-seconds" sec")
;;                                          (debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" SYNC took "last-sync-seconds" sec ; with duty-cycle of "duty-cycle" off time is now "off-time)
;;                                          'sync-completed))
;;                                         (else
;;                                          (system (conc "/bin/cp "sync-log" "sync-log".fail"))
;;                                          (debug:print 0 *default-log-port* "ERROR: ["(common:human-time)"] Sync failed. See log at "sync-log".fail")
;;                                          (if (file-exists? (conc mtdbfile ".backup"))
;;                                              (system (conc "/bin/cp "mtdbfile ".backup " mtdbfile)))
;;                                          #f))))
;;                                  (common:simple-file-release-lock lockfile)
;;                                  (BB> "released lockfile: " lockfile)
;;                                  (when (common:file-exists? lockfile)
;;                                    (BB> "DID NOT ACTUALLY RELEASE LOCKFILE"))
;;                                  res2) ;; end let
;;                                );; end begin
;;                              ;; else
;;                              (cond
;;                               (persist-until-sync
;;                                (thread-sleep! 1)
;;                                (debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" other SYNC in progress; we're in a fork-to-background so we need to succeed.  Let's wait a jiffy and and try again. num-tries="num-tries" (waiting for lockfile="lockfile" to disappear)")
;;                                (retry-loop (add1 num-tries)))
;;                               (else
;;                                (thread-sleep! (max off-time (+ last-sync-seconds min-intersync-delay)))
;;                                (debug:print 1 *default-log-port* "INFO: ["(common:human-time)"] pid="(current-process-id)" other SYNC in progress; not syncing.")
;;                                'parallel-sync-in-progress))
;;                              ) ;; end if got lockfile
;;                          )
;;                     ))
;;               (BB> "End do-a-sync with fork-to-background="fork-to-background" persist-until-sync="persist-until-sync" and result="finalres)
;;               finalres)
;;             ) ;; end lambda
;;           ))
;;     do-a-sync))
;; 
;; 

)