-
Notifications
You must be signed in to change notification settings - Fork 5
/
utils.py
1077 lines (996 loc) · 35 KB
/
utils.py
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
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
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
######################################################################
#
# Exported API routines:
#
# getBaseName(iocName)
# Return the basename of the iocAdmin PVs for a particular IOC.
#
# fixdir(rundir, iocName)
# Abbreviate the running directory of an IOC by making it relative
# to EPICS_SITE_TOP and removing the final "build" or "iocBoot"
# portion of the path.
#
# check_status(host, port, id)
# Check the health of an IOC, returning a dictionary with status,
# pid, id, autorestart, autorestartmode, and rdir.
#
# killProc(host, port)
# Kill the IOC at the given location.
#
# restartProc(host, port)
# Restart the IOC at the given location.
#
# startProc(hutch, entry)
# entry is a configuration dictionary entry that should be started
# for a particular hutch.
#
# readConfig(hutch, time=None, do_os=False)
# Read the configuration file for a given hutch if newer than time.
# Return None on failure or no change, otherwise a tuple: (filetime,
# configlist, hostlist, vars). filetime is the modification time of
# the configuration, configlist is a list of dictionaries containing
# an IOC configuration, hostlist is a (hint) list of hosts in this
# hutch, and vars is an additional list of variables defined in the
# config file.
#
# If do_os is True, also scan the .hosts directory to build a host type
# lookup table.
#
# writeConfig(hutch, hostlist, configlist, vars, f=None)
# Write the configuration file for a given hutch. Deals with the
# existence of uncommitted changes ("new*" fields). If f is given,
# write to this open file instead of the real configuration file.
# vars is a dictionary of additional values to write.
#
# installConfig(hutch, filename, fd=None)
# Install the given filename as the configuration file for the
# specified hutch. If fd is None, do it directly, otherwise send
# a request to run the installConfig utility through the given pipe.
#
# readStatusDir(hutch, readfile)
# Read the status directory for a particular hutch, returning a list
# of dictionaries containing updated information. The readfile parameter
# is a function passed a filepath and the IOC name. This should read
# any updated information, returning a list of lines or an empty list
# if the file was not read. The default readfile always reads everything.
#
# applyConfig(hutch, verify=None, ioc=None)
# Apply the current configuration for the specified hutch. Before
# the configuration is applied, the verify method, if any is called.
# This routine is passed:
# current - The actual state of things.
# config - The desired configuration.
# kill_list - The IOCs that should be killed.
# start_list - The IOCs that should be started.
# restart_list - The IOCs that should be restarted with ^X.
# The method should return a (kill, start, restart) tuple of the
# IOCs that should *really* be changed. (This method could then
# query the user to limit the changes or cancel them altogether.)
# If an ioc is specified (by name), only that IOC will be changed,
# otherwise the entire configuration will be applied.
#
# netconfig(host)
# Return a dictionary with the netconfig information for this host.
#
# rebootServer(host)
# Attempt to reboot the specified host.
#
# getHutchList()
# Return the list of all supported hutches.
#
######################################################################
import telnetlib, string, datetime, os, time, fcntl, re, glob, subprocess, copy, sys
#
# Defines
#
CAMRECORDER = os.getenv("CAMRECORD_ROOT")
PROCSERV_EXE = os.getenv("PROCSERV_EXE")
if PROCSERV_EXE is None:
PROCSERV_EXE = "procServ"
else:
PROCSERV_EXE = PROCSERV_EXE.split()[0]
TMP_DIR = "%s/config/.status/tmp" % os.getenv("PYPS_ROOT")
STARTUP_DIR = "%s/config/%%s/iocmanager/" % os.getenv("PYPS_ROOT")
CONFIG_DIR = "%s/config/" % os.getenv("PYPS_ROOT")
CONFIG_FILE = "%s/config/%%s/iocmanager.cfg" % os.getenv("PYPS_ROOT")
NOSSH_FILE = "%s/config/%%s/iocmanager.nossh" % os.getenv("PYPS_ROOT")
HIOC_STARTUP = "/reg/d/iocCommon/hioc/%s/startup.cmd"
HIOC_POWER = "/reg/common/tools/bin/power"
HIOC_CONSOLE = "/reg/common/tools/bin/console"
AUTH_FILE = "%s/config/%%s/iocmanager.auth" % os.getenv("PYPS_ROOT")
STATUS_DIR = "%s/config/.status/%%s" % os.getenv("PYPS_ROOT")
HOST_DIR = "%s/config/.host" % os.getenv("PYPS_ROOT")
LOGBASE = "%s/%%s/iocInfo/ioc.log" % os.getenv("IOC_DATA")
PVFILE = "%s/%%s/iocInfo/IOC.pvlist" % os.getenv("IOC_DATA")
INSTALL = __file__[:__file__.rfind('/')] + "/installConfig"
BASEPORT = 39050
COMMITHOST = "psbuild-rhel7"
KINIT = "/afs/slac.stanford.edu/package/heimdal/bin/kinit"
NETCONFIG = "/reg/common/tools/bin/netconfig"
STATUS_INIT = "INITIALIZE WAIT"
STATUS_NOCONNECT = "NOCONNECT"
STATUS_RUNNING = "RUNNING"
STATUS_SHUTDOWN = "SHUTDOWN"
STATUS_DOWN = "HOST DOWN"
STATUS_ERROR = "ERROR"
CONFIG_NORMAL = 0
CONFIG_ADDED = 1
CONFIG_DELETED = 2
# messages expected from procServ
MSG_BANNER_END = "server started at"
MSG_ISSHUTDOWN = "is SHUT DOWN"
MSG_ISSHUTTING = "is shutting down"
MSG_KILLED = "process was killed"
MSG_RESTART = "new child"
MSG_PROMPT_OLD = "\x0d\x0a[$>] "
MSG_PROMPT = "\x0d\x0a> "
MSG_SPAWN = "procServ: spawning daemon"
MSG_AUTORESTART_MODE = "auto restart mode"
MSG_AUTORESTART_IS_ON = "auto restart( mode)? is ON,"
MSG_AUTORESTART_TO_ON = "auto restart to ON"
MSG_AUTORESTART_TO_OFF = "auto restart to OFF"
MSG_AUTORESTART_MODE_TO_ON = "auto restart mode to ON"
MSG_AUTORESTART_MODE_TO_OFF = "auto restart mode to OFF"
EPICS_DEV_TOP = "/reg/g/pcds/epics-dev"
EPICS_SITE_TOP = "/reg/g/pcds/epics/"
stpaths = ["%s/children/build/iocBoot/%s/st.cmd", "%s/build/iocBoot/%s/st.cmd", "%s/iocBoot/%s/st.cmd"]
hosttype = {}
######################################################################
#
# Name and Directory Utilities
#
#
# Given an IOC name, find the base PV name.
#
def getBaseName(ioc):
pvInfoPath = PVFILE % ioc
if not os.path.isfile( pvInfoPath ):
return None
try:
lines = open(pvInfoPath).readlines()
for l in lines:
pv = l.split(",")[0]
if pv[-10:] == ":HEARTBEAT":
return pv[:-10]
except:
print "Error parsing %s for base PV name!" % (pvInfoPath)
return None
#
# Given a full path and an IOC name, return a path relative
# to EPICS_SITE_TOP without the final "iocBoot".
#
def fixdir(dir, id):
if dir[0:len(EPICS_SITE_TOP)] == EPICS_SITE_TOP:
dir = dir[len(EPICS_SITE_TOP):]
try:
ext = "/children/build/iocBoot/" + id
if dir[len(dir)-len(ext):len(dir)] == ext:
dir = dir[0:len(dir)-len(ext)]
except:
pass
try:
ext = "/build/iocBoot/" + id
if dir[len(dir)-len(ext):len(dir)] == ext:
dir = dir[0:len(dir)-len(ext)]
except:
pass
try:
ext = "/iocBoot/" + id
if dir[len(dir)-len(ext):len(dir)] == ext:
dir = dir[0:len(dir)-len(ext)]
except:
pass
return dir
######################################################################
#
# Telnet/Procserv Utilities
#
#
# Read and parse the connection information from a new procServ telnet connection.
# Returns a dictionary of information.
#
def readLogPortBanner(tn):
try:
response = tn.read_until(MSG_BANNER_END, 1)
except:
response = ""
if not response.count(MSG_BANNER_END):
return {'status' : STATUS_ERROR,
'pid' : "-",
'rid' : "-",
'autorestart' : False,
'autorestartmode' : False,
'rdir' : "/tmp" }
if re.search('SHUT DOWN', response):
tmpstatus = STATUS_SHUTDOWN
pid = "-"
else:
tmpstatus = STATUS_RUNNING
pid = re.search('@@@ Child \"(.*)\" PID: ([0-9]*)', response).group(2)
match = re.search('@@@ Child \"(.*)\" start', response)
getid = "-"
if match:
getid = match.group(1)
match = re.search('@@@ Server startup directory: (.*)', response)
dir = "/tmp"
if match:
dir = match.group(1)
if dir[-1] == '\r':
dir = dir[:-1]
if re.search(MSG_AUTORESTART_IS_ON, response):
arst = True
else:
arst = False
# procServ 2.8 changed "auto restart" to "auto restart mode"
if re.search(MSG_AUTORESTART_MODE, response):
arstm = True
else:
arstm = False
return {'status' : tmpstatus,
'pid' : pid,
'rid' : getid,
'autorestart' : arst,
'autorestartmode' : arstm,
'rdir' : fixdir(dir, getid) }
#
# Returns a dictionary with status information for a given host/port.
#
def check_status(host, port, id):
# Ping the host to see if it is up!
pingrc = os.system("ping -c 1 -w 1 -W 0.002 %s >/dev/null 2>/dev/null" % host)
if pingrc != 0:
return {'status' : STATUS_DOWN,
'rid' : id,
'pid' : "-",
'autorestart' : False,
'rdir' : "/tmp" }
try:
tn = telnetlib.Telnet(host, port, 1)
except:
return {'status' : STATUS_NOCONNECT,
'rid' : id,
'pid' : "-",
'autorestart' : False,
'autorestartmode' : False,
'rdir' : "/tmp" }
result = readLogPortBanner(tn)
tn.close()
return result
def openTelnet(host, port):
connected = False
telnetCount = 0
while (not connected) and (telnetCount < 2):
telnetCount += 1
try:
tn = telnetlib.Telnet(host, port, 1)
except:
time.sleep(0.25)
else:
connected = True
if connected:
return tn
else:
return None
def fixTelnetShell(host, port):
tn = openTelnet(host, port)
tn.write("\x15\x0d");
statd = tn.expect([MSG_PROMPT_OLD], 2)
tn.write("export PS1='> '\n");
statd = tn.read_until(MSG_PROMPT, 2)
tn.close()
def killProc(host, port, verbose=False):
print "Killing IOC on host %s, port %s..." % (host, port)
# First, turn off autorestart!
tn = openTelnet(host, port)
if tn:
try:
statd = readLogPortBanner(tn)
except:
print 'ERROR: killProc() failed to readLogPortBanner on %s port %s' % (host, port)
tn.close()
return
try:
if verbose:
print 'killProc: %s port %s status is %s' % (host, port, statd['status'])
if statd['autorestart']:
if verbose:
print 'killProc: turning off autorestart on %s port %s' % (host, port)
# send ^T to toggle off auto restart.
tn.write("\x14")
# wait for toggled message
if statd['autorestartmode']:
r = tn.read_until(MSG_AUTORESTART_MODE_TO_OFF, 1)
else:
r = tn.read_until(MSG_AUTORESTART_TO_OFF, 1)
time.sleep(0.25)
except:
print 'ERROR: killProc() failed to turn off autorestart on %s port %s' % (host, port)
tn.close()
return
tn.close()
else:
print 'ERROR: killProc() telnet to %s port %s failed' % (host, port)
return
# Now, reconnect to actually kill it!
tn = openTelnet(host, port)
if tn:
statd = readLogPortBanner(tn)
if statd['status'] == STATUS_RUNNING:
try:
if verbose:
print 'killProc: Sending Ctrl-X to %s port %s' % (host, port)
# send ^X to kill child process
tn.write("\x18");
# wait for killed message
r = tn.read_until(MSG_KILLED, 1)
time.sleep(0.25)
except:
print 'ERROR: killProc() failed to kill process on %s port %s' % (host, port)
tn.close()
return
try:
if verbose:
print 'killProc: Sending Ctrl-Q to %s port %s' % (host, port)
# send ^Q to kill procServ
tn.write("\x11");
except:
print 'ERROR: killProc() failed to kill procServ on %s port %s' % (host, port)
tn.close()
return
tn.close()
else:
print 'ERROR: killProc() telnet to %s port %s failed' % (host, port)
def restartProc(host, port):
print "Restarting IOC on host %s, port %s..." % (host, port)
tn = openTelnet(host, port)
started = False
if tn:
statd = readLogPortBanner(tn)
if statd['status'] == STATUS_RUNNING:
try:
# send ^X to kill child process
tn.write("\x18");
# wait for killed message
r = tn.read_until(MSG_KILLED, 1)
time.sleep(0.25)
except:
pass # What do we do now?!?
if not statd['autorestart']:
# send ^R to restart child process
tn.write("\x12");
# wait for restart message
r = tn.read_until(MSG_RESTART, 1)
if not r.count(MSG_RESTART):
print 'ERROR: no restart message... '
else:
started = True
tn.close()
else:
print 'ERROR: restartProc() telnet to %s port %s failed' % (host, port)
return started
def startProc(cfg, entry, local=False):
# Hopefully, we can dispose of this soon!
platform = '1'
if cfg == 'xrt':
platform = '2'
if cfg == 'las':
platform = '3'
if local:
host = "localhost"
else:
host = entry['host']
port = entry['port']
name = entry['id']
try:
cmd = entry['cmd']
except:
cmd = "./st.cmd"
try:
if 'u' in entry['flags']:
# The Old Regime: add u to flags to append the ID to the command.
cmd += ' -u ' + name
except:
pass
sr = os.getenv("SCRIPTROOT")
if sr == None:
sr = STARTUP_DIR % cfg
elif sr[-1] != '/':
sr += '/'
cmd = "%sstartProc %s %d %s %s" % (sr, name, port, cfg, cmd)
log = LOGBASE % name
ctrlport = BASEPORT + 2 * (int(platform) - 1)
print "Starting %s on port %s of host %s, platform %s..." % (name, port, host, platform)
cmd = '%s --logfile %s --name %s --allow --coresize 0 --savelog %d %s' % \
(PROCSERV_EXE, log, name, port, cmd)
try:
tn = telnetlib.Telnet(host, ctrlport, 1)
except:
print "ERROR: telnet to procmgr (%s port %d) failed" % (host, ctrlport)
print ">>> Please start the procServ process on host %s!" % host
else:
# telnet succeeded
# send ^U followed by carriage return to safely reach the prompt
tn.write("\x15\x0d");
# wait for prompt (procServ)
statd = tn.read_until(MSG_PROMPT, 2)
if not string.count(statd, MSG_PROMPT):
print 'ERROR: no prompt at %s port %s' % (host, ctrlport)
# send command
tn.write('%s\n' % cmd);
# wait for prompt
statd = tn.read_until(MSG_PROMPT, 2)
if not string.count(statd, MSG_PROMPT):
print 'ERR: no prompt at %s port %s' % (host, ctrlport)
# close telnet connection
tn.close()
######################################################################
#
# Configuration/Status Utilities
#
#
# Reads a hutch configuration file and returns a tuple:
# (filetime, configlist, hostlist, varlist).
#
# cfg can be a path to config file or name of a hutch
#
def readConfig(cfg, time=None, silent=False, do_os=False):
config = {'procmgr_config': None, 'hosts': None, 'dir':'dir',
'id':'id', 'cmd':'cmd', 'flags':'flags', 'port':'port', 'host':'host',
'disable':'disable', 'history':'history', 'delay':'delay', 'alias':'alias', 'hard':'hard' }
vars = set(config.keys())
if len(cfg.split('/')) > 1: # cfg is file path
cfgfn = cfg
else: # cfg is name of hutch
cfgfn = CONFIG_FILE % cfg
try:
f = open(cfgfn, "r")
except Exception, msg:
if not silent:
print "readConfig file error: %s" % str(msg)
return None
fcntl.lockf(f, fcntl.LOCK_SH) # Wait for the lock!!!!
try:
mtime = os.stat(cfgfn).st_mtime
if time != None and time == mtime:
res = None
else:
execfile(cfgfn, {}, config)
newvars = set(config.keys()).difference(vars)
vdict = {}
for v in newvars:
vdict[v] = config[v]
res = (mtime, config['procmgr_config'], config['hosts'], vdict)
except Exception, msg:
if not silent:
print "readConfig error: %s" % str(msg)
res = None
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
if res == None:
return None
for l in res[1]:
# Add defaults!
if not 'disable' in l.keys():
l['disable'] = False
if not 'hard' in l.keys():
l['hard'] = False
if not 'history' in l.keys():
l['history'] = []
if not 'alias' in l.keys():
l['alias'] = ""
l['cfgstat'] = CONFIG_NORMAL
if l['hard']:
l['base'] = getBaseName(l['id'])
l['dir'] = getHardIOCDir(l['id'], silent)
l['host'] = l['id']
l['port'] = -1
l['rhost'] = l['id']
l['rport'] = -1
l['rdir'] = l['dir']
l['newstyle'] = False
l['pdir'] = ""
else:
l['rid'] = l['id']
l['rdir'] = l['dir']
l['rhost'] = l['host']
l['rport'] = l['port']
l['newstyle'] = False
l['pdir'] = findParent(l['id'], l['dir'])
if do_os:
global hosttype
hosttype = {}
for fn in config['hosts']:
try:
hosttype[fn] = open("%s/%s" % (HOST_DIR, fn)).readlines()[0].strip()
except:
pass
return res
#
# Writes a hutch configuration file, dealing with possible changes ("new*" fields).
#
def writeConfig(hutch, hostlist, cfglist, vars, f=None):
if f == None:
f = open(CONFIG_FILE % hutch, "r+")
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
f.truncate()
for (k, v) in vars.items():
try:
if not v in ["True", "False"]:
n = int(v)
f.write("%s = %s\n" % (k, str(v)))
except:
f.write('%s = "%s"\n' % (k, str(v)))
f.write("\nhosts = [\n")
for h in hostlist:
f.write(" '%s',\n" % h)
f.write("]\n\n");
f.write("procmgr_config = [\n")
for entry in cfglist:
if entry['cfgstat'] == CONFIG_DELETED:
continue
try:
id = entry['newid'].strip() # Bah. Sometimes we add a space so this becomes blue!
except:
id = entry['id']
try:
alias = entry['newalias']
except:
alias = entry['alias']
if entry['hard']:
if alias != "":
extra = ", alias: '%s'" % alias
else:
extra = ""
f.write(" {id:'%s', hard: True%s},\n" % (id, extra))
continue
try:
host = entry['newhost']
except:
host = entry['host']
try:
port = entry['newport']
except:
port = entry['port']
try:
dir = entry['newdir']
except:
dir = entry['dir']
extra = ""
try:
disable = entry['newdisable']
except:
disable = entry['disable']
if disable:
extra += ", disable: True"
if alias != "":
extra += ", alias: '%s'" % alias
try:
h = entry['history']
if h != []:
extra += ",\n history: [" + ", ".join(["'"+l+"'" for l in h]) + "]"
except:
pass
try:
extra += ", delay: %d" % entry['delay']
except:
pass
try:
extra += ", cmd: '%s'" % entry['cmd']
except:
pass
f.write(" {id:'%s', host: '%s', port: %s, dir: '%s'%s},\n" %
(id, host, port, dir, extra))
f.write("]\n");
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
#
# Install an existing file as the hutch configuration file.
#
def installConfig(hutch, file, fd=None):
open(CONFIG_FILE % hutch, "r").close() # Sigh... NFS.
mtime = os.stat(CONFIG_FILE % hutch).st_mtime
if fd != None:
flush_input(fd)
#print ">>> %s %s %s" % (INSTALL, hutch, file)
do_write(fd, "%s %s %s\n" % (INSTALL, hutch, file))
read_until(fd, "> ")
else:
l = open(file).readlines()
f = open(CONFIG_FILE % hutch, "r+")
fcntl.lockf(f, fcntl.LOCK_EX | fcntl.LOCK_NB)
f.truncate()
f.writelines(l)
fcntl.lockf(f, fcntl.LOCK_UN)
f.close()
open(CONFIG_FILE % hutch, "r").close() # Sigh... NFS.
mtime2 = os.stat(CONFIG_FILE % hutch).st_mtime
i = 0
while mtime == mtime2 and i < 40:
if mtime == mtime2:
time.sleep(0.25)
i += 1
mtime2 = os.stat(CONFIG_FILE % hutch).st_mtime
if mtime == mtime2:
raise Exception("No change?!?")
#
# Reads the status directory for a hutch, looking for changes. The newer
# parameter is a routine that is called as newer(iocname, mtime) which
# returns True if the file has been modified since last read. In this
# case, newer should also remember mtime as the last read time.
#
# Returns a list of dictionaries containing the new information.
#
def readStatusDir(cfg, readfile=lambda fn, f: open(fn).readlines()):
files = os.listdir(STATUS_DIR % cfg)
d = {}
for f in files:
fn = (STATUS_DIR % cfg) + "/" + f
mtime = os.stat(fn).st_mtime
l = readfile(fn, f)
if l != []:
stat = l[0].strip().split() # PID HOST PORT DIRECTORY
if len(stat) == 4:
try:
if d[(stat[1], int(stat[2]))]['mtime'] < mtime:
# Duplicate, but newer, so replace!
try:
print "Deleting obsolete %s in favor of %s" % (d[(stat[1], int(stat[2]))]['rid'], f)
os.unlink((STATUS_DIR % cfg) + "/" + d[(stat[1], int(stat[2]))]['rid'])
except:
print "Error while trying to delete file %s!" % (STATUS_DIR % cfg) + "/" + d[(stat[1], int(stat[2]))]['rid']
# Leave this here to make sure file is updated.
raise Exception( "Need to update cfg file." )
else:
# Duplicate, but older, so ignore!
try:
print "Deleting obsolete %s in favor of %s" % (f, d[(stat[1], int(stat[2]))]['rid'])
os.unlink(fn)
except:
print "Error while trying to delete file %s!" % fn
except:
try:
d[(stat[1], int(stat[2]))] = {'rid' : f,
'pid': stat[0],
'rhost': stat[1],
'rport': int(stat[2]),
'rdir': stat[3],
'newstyle' : True,
'mtime': mtime,
'hard': False}
except:
print "Status dir failure!"
print f
print stat
else:
try:
os.unlink(fn)
except:
print "Error while trying to delete file %s!" % fn
return d.values()
#
# Apply the current configuration.
#
def applyConfig(cfg, verify=None, ioc=None):
result = readConfig(cfg)
if result == None:
print "Cannot read configuration for %s!" % cfg
return -1
(mtime, cfglist, hostlist, vdict) = result
config = {}
for l in cfglist:
if ioc == None or ioc == l['id']:
config[l['id']] = l
runninglist = readStatusDir(cfg)
current = {}
for l in runninglist:
if ioc == None or ioc == l['rid']:
result = check_status(l['rhost'], l['rport'], l['rid'])
if result['status'] == STATUS_RUNNING:
rdir = l['rdir']
l.update(result);
if l['rdir'] == '/tmp':
l['rdir'] = rdir
else:
l['newstyle'] = False
current[l['rid']] = l
running = current.keys()
wanted = config.keys()
# Double-check for old-style IOCs that don't have an indicator file!
for l in wanted:
if not l in running:
result = check_status(config[l]['host'], int(config[l]['port']), config[l]['id'])
if result['status'] == STATUS_RUNNING:
result.update({'rhost': config[l]['host'],
'rport': config[l]['port'],
'newstyle': False})
current[l] = result
running = current.keys()
nw = []
for l in wanted:
try:
if not config[l]['newdisable'] and not config[l]['hard']:
nw.append(l)
except:
if not config[l]['disable'] and not config[l]['hard']:
nw.append(l)
wanted = nw
#
# Note the hard IOC handling... we don't want to start them, but they
# don't have entries in the running directory anyway so we don't think
# we need to!
#
# Camera recorders always seem to be in the wrong directory, so cheat!
for l in cfglist:
if l['dir'] == CAMRECORDER:
try:
current[l['id']]['rdir'] = CAMRECORDER
except:
pass
#
# Now, we need to make three lists: kill, restart, and start.
#
# Kill anyone who we don't want, or is running on the wrong host or port, or is oldstyle and needs
# an upgrade.
kill_list = [l for l in running if not l in wanted or
current[l]['rhost'] != config[l]['host'] or
current[l]['rport'] != config[l]['port'] or
( (not current[l]['newstyle']) and
current[l]['rdir'] != config[l]['dir'] )]
# Start anyone who wasn't running, or was running on the wrong host or port, or is oldstyle and needs
# an upgrade.
start_list = [l for l in wanted if not l in running or current[l]['rhost'] != config[l]['host'] or
current[l]['rport'] != config[l]['port'] or
(not current[l]['newstyle'] and
current[l]['rdir'] != config[l]['dir'])]
# Anyone running the wrong version, newstyle, on the right host and port just needs a restart.
restart_list = [l for l in wanted if l in running and current[l]['rhost'] == config[l]['host'] and
current[l]['newstyle'] and
current[l]['rport'] == config[l]['port'] and
current[l]['rdir'] != config[l]['dir']]
if verify != None:
(kill_list, start_list, restart_list) = verify(current, config, kill_list, start_list, restart_list)
for l in kill_list:
killProc(current[l]['rhost'], int(current[l]['rport']))
try:
# This is dead, so get rid of the status file!
os.unlink((STATUS_DIR % cfg) + "/" + l)
except:
print "Error while trying to delete file %s!" % (STATUS_DIR % cfg) + "/" + l
for l in start_list:
startProc(cfg, config[l])
for l in restart_list:
restartProc(current[l]['rhost'], int(current[l]['rport']))
time.sleep(1)
return 0
######################################################################
#
# Miscellaneous utilities
#
def check_auth(user, hutch):
lines = open(AUTH_FILE % hutch).readlines()
lines = [l.strip() for l in lines]
for l in lines:
if l == user:
return True
return False
def check_ssh(user, hutch):
try:
lines = open(NOSSH_FILE % hutch).readlines()
except:
return True
lines = [l.strip() for l in lines]
for l in lines:
if l == user:
return False
return True
eq = re.compile("^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]*=[ \t]*(.*?)[ \t]*$")
eqq = re.compile('^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]*=[ \t]*"([^"]*)"[ \t]*$')
eqqq = re.compile("^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]*=[ \t]*'([^']*)'[ \t]*$")
sp = re.compile("^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]+(.+?)[ \t]*$")
spq = re.compile('^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]+"([^"]*)"[ \t]*$')
spqq = re.compile("^[ \t]*([A-Za-z_][A-Za-z0-9_]*)[ \t]+'([^']*)'[ \t]*$")
def readAll(fn):
if fn[0] != '/':
fn = EPICS_SITE_TOP + fn
try:
return open(fn).readlines()
except:
return []
def findParent(ioc, dir):
fn = dir + "/" + ioc + ".cfg"
lines = readAll(fn)
if lines == []:
fn = dir + "/children/" + ioc + ".cfg"
lines = readAll(fn)
if lines == []:
return ""
lines.reverse()
for l in lines:
m = eqqq.search(l)
if m == None:
m = eqq.search(l)
if m == None:
m = eq.search(l)
if m == None:
m = spqq.search(l)
if m == None:
m = spq.search(l)
if m == None:
m = sp.search(l)
if m != None:
var = m.group(1)
val = m.group(2)
if var == "RELEASE":
if val == '$$PATH/..' or val == '$$UP(PATH)':
return fixdir(dir, ioc)
else:
return fixdir(val, ioc)
return ""
def read_until(fd, expr):
exp = re.compile(expr)
data = ""
while True:
v = os.read(fd, 1024)
#print "<<< %s" % v
data += v
m = exp.search(data)
if m != None:
return m
def flush_input(fd):
fcntl.fcntl(fd, fcntl.F_SETFL, os.O_NONBLOCK)
while True:
try:
data = os.read(fd, 1024)
except:
fcntl.fcntl(fd, fcntl.F_SETFL, 0)
return
def do_write(fd, msg):
os.write(fd, msg)
def commit_config(hutch, comment, fd):
config = CONFIG_FILE % hutch
flush_input(fd)
do_write(fd, "cat >" + config + ".comment <<EOFEOFEOF\n");
do_write(fd, comment)
do_write(fd, "\nEOFEOFEOF\n");
read_until(fd, "> ")
# Sigh. This does nothing but read the file, which makes NFS get the latest.
do_write(fd, "cp " + config + " /tmp/foo\n")
read_until(fd, "> ")
do_write(fd, "rm -f /tmp/foo\n")
read_until(fd, "> ")
do_write(fd, "umask 2; svn commit -F " + config + ".comment " + config + "\n")
read_until(fd, "> ")
do_write(fd, "rm -f " + config + ".comment\n")
read_until(fd, "> ")
# Find siocs matching input arguments
# May want to extend this to regular expressions at some point
# eg: find_iocs(host='ioc-xcs-mot1') or find_iocs(id='ioc-xcs-imb3')
# Returns list of tuples of form:
# ['config-file', {ioc config dict}]
def find_iocs(**kwargs):
cfgs = glob.glob(CONFIG_FILE % '*')
configs = list()
for cfg in cfgs:
config = readConfig(cfg)[1]
for ioc in config:
for k in kwargs.items():
if ioc.get(k[0])!=k[1]:
break
else:
configs.append([cfg,ioc])
pass
return configs
def netconfig(host):
try:
env = copy.deepcopy(os.environ)
del env['LD_LIBRARY_PATH']
p = subprocess.Popen([NETCONFIG, "view", host], env=env, stdout=subprocess.PIPE)
r = [l.strip().split(": ") for l in p.communicate()[0].split('\n')]
d = {}
for l in r:
if len(l) == 2:
d[l[0].lower()] = l[1]
return d
except:
return {}
def rebootServer(host):
os.system("/usr/bin/ipmitool -I lanplus -U ADMIN -Pipmia8min -H %s power cycle &" % host)
def getHardIOCDir(host, silent=False):
dir = "Unknown"
try:
lines = [l.strip() for l in open(HIOC_STARTUP % host).readlines()]
except:
if not silent:
print "Error while trying to read HIOC startup file for %s!" % host
return "Unknown"
for l in lines:
if l[:5] == "chdir":
try:
dir = "ioc/" + re.search('\"/iocs/(.*)/iocBoot', l).group(1)
except:
pass # Having dir show "Unknown" should suffice.
return dir
def restartHIOC(host):
""" Attempts to console into a HIOC and reboot it via the shell. """
try:
for l in netconfig(host)['console port dn'].split(','):
if l[:7] == 'cn=port':
port = 2000 + int(l[7:])
if l[:7] == 'cn=digi':
host = l[3:]
except:
print "Error parsing netconfig for HIOC %s console info!" % host
return
try:
tn = telnetlib.Telnet(host, port, 1)