aboutsummaryrefslogtreecommitdiffstats
path: root/ulri
blob: bf59d3d845fafc02f64664728a0b184abee7a517 (plain)
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
#!/usr/bin/perl
#
# Copyright (C) 2005,2006 Mandriva
# 
# Author: Florent Villard <warly@mandriva.com>
#
# This program 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 2, or (at your option)
# any later version.
#
# This program 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 this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#
# compare and rebuild packages on different architecture
#
# TODO
# 
# - create a configuration file to handle the various iurt running
# - get the content of the rebuild dir 
# - run as many iurt as machines are available and gather results
# - the scheduler just take the results, launch new rebuild, and quit
# - use perl ssh and try to workarround the non working timeout when the
#   remote machine is stalled
# - use submitter as packager, not generic name
#

use strict;
use MDK::Common;
use Iurt::Config qw(config_usage get_date config_init dump_cache init_cache get_author_email check_arch check_noarch);
use Iurt::Process qw(check_pid);
use Iurt::File qw(check_upload_tree);
use Iurt::Mail qw(sendmail);
use Iurt::Util qw(plog_init plog ssh_setup ssh sout sget sput);
use File::Copy 'move';
use File::Path 'mkpath';
use File::Temp 'mktemp';
use Filesys::Df qw(df);
use Data::Dumper;

my %run;
my $program_name = 'ulri';
$run{program_name} = $program_name;

open(my $LOG, ">&STDERR");
$run{LOG} = sub { print $LOG @_ };

plog_init($program_name, $LOG, 7, 1);

my $HOME = $ENV{HOME};
my $configfile = "$HOME/.upload.conf";
my $sysconfigfile = "/etc/iurt/upload.conf";

my $config = {};
foreach my $f ($configfile, $sysconfigfile) {
    plog('DEBUG', "load config: $f");
    if (-f $f) {
        $config = eval(cat_($f))
          or die "FATAL $program_name: syntax error in $f";
        last;
    }
}

my %config_usage = ( 
    admin => {
	desc => 'mail address of the bot administrator',
	default => 'distrib-admin@mandrivalinux.org'
    },
    'arch_translation' => {  
	desc => "Renaming of arch",
	default => { 'sparc64' => 'sparcv9' }
    },
     bot => {  
	desc => "List of bot able to compile the packages",
	default => { 
	    i586 => { 
	        n1 => { 
		    iurt => {
			user => 'mandrake' ,
			command => 'sudo -u mandrake -H /usr/local/bin/iurt2.sh --copy_srpm --group -v 1 --config local_spool /export/home/mandrake/iurt/__DIR__ --no_rsync --chrooted-urpmi http://kenobi/dis/ -r __TARGET__ __ARCH__',
			packages => '/export/home/mandrake/iurt/',
		    } ,
		},
	    },
	},
    },
    media => { 
	desc => 'Corresponding media to add given the current media',
	default => {
	    default => { 
		"main/release" => [ "main/release", "main/updates" ], 
		"main/updates" => [ "main/release", "main/updates" ],
		"main/testing" => [ "main/release", "main/updates",
			"main/testing" ],
		"main/backports" => [ "main/release", "main/updates",
			"main/testing", "main/backports" ],
		"contrib/release" => [ "main/release", "main/updates",
			"contrib/release", "contrib/updates" ],
		"contrib/updates" => [ "main/release", "main/updates",
			"contrib/release", "contrib/updates" ],
		"contrib/testing" => [ "main/release", "main/updates",
			"main/testing", "contrib/release", "contrib/updates",
			"contrib/testing" ],
		"contrib/backports" => [ "main/release", "main/updates",
			"main/testing", "main/backports", "contrib/release",
			"contrib/updates", "contrib/testing",
			"contrib/backports" ],
		"non-free/release" => [ "main/release", "main/updates",
			"non-free/release", "non-free/updates" ],
		"non-free/updates" => [ "main/release", "main/updates",
			"non-free/release", "non-free/updates" ],
		"non-free/testing" => [ "main/release", "main/updates",
			"main/tessting", "non-free/release",
			"non-free/updates", "non-free/testing" ],
		"non-free/backports" => [ "main/release", "main/updates",
			"main/testing", "main/backports", "non-free/release",
			"non-free/updates", "non-free/testing",
			"non-free/backports" ],
	    },
	},
    },
    faildelay => {
	desc => "Time after which the rebuild is considered as a failure",
	default => 36000
    },
    http_queue => {
	desc => 'Address where log can be consulted',
	default => 'http://kenobi.mandriva.com/queue '
    },
    queue => {
	desc => "Root of the tree where the packages to compile are located",
	default => "$HOME/uploads"
    },
    cache_home => {
	desc => 'Where to store the cache files',
	default => "$HOME/.bugs"
    },
    tmp => {
       desc => "Temporary directory",
       default => "$HOME/tmp"
    },
    ssh_options => {
	desc => "SSH options",
	default => "-o ConnectTimeout=20 -o BatchMode=yes"
    },
    packager => {
        desc => 'Default packager tag user by bot',
	default => 'Mageia Team <http://www.mageia.org>'
    },
);
config_usage(\%config_usage, $config) if $run{config_usage};
config_init(\%config_usage, $config, \%run);

my %untranslated_arch;
foreach my $k (keys %{$config->{arch_translation}}) {
    my $v = $config->{arch_translation}{$k};
    push @{$untranslated_arch{$v}}, $k;
}

$run{pidfile_home} = $config->{tmp};
$run{pidfile} = "upload";
my $pidfile = check_pid(\%run);

#my $cache = init_cache(\%run, $config, { done => {} });
my $cache = { done => {} };

my ($fulldate, $daydate) = get_date();
$run{daydate} = $daydate;

my $df = df $config->{queue};
if ($df->{per} == 100) {
    # FIXME should send a mail too
    die "FATAL $program_name: not enough space on the filesystem, only $df->{bavail} KB on $config->{queue}, full at $df->{per}%";
}

($fulldate, $daydate) = get_date();

my %pkg_tree;
my $compildone = $cache->{done};

my $todo = "$config->{queue}/todo";
my $failure = "$config->{queue}/failure";
my $done = "$config->{queue}/done";

# Raise this when the noarch package starts to build on any bot
my %noarch_build;

#
# Part 0: gather data from upload tree
#

plog('MSG', "check uploads tree");

# A list of what is currently building so we can report at the end
#
my %build_list;

plog('DEBUG', "input queue is $todo");

sub todo_func {
    my ($todo, $f, $m, $s, $r) = @_;

    if ($r =~ /(\d{14}\.(\w+)\.\w+\.\d+)_(.*\.src\.rpm)$/) {
	my ($prefix, $user, $srpm) = ($1, $2, $3);

	plog('DEBUG', "found srpm $srpm ($prefix)");
	$pkg_tree{$prefix}{path} = "/$f/$m/$s";
	$pkg_tree{$prefix}{media} = "$m/$s";
	$pkg_tree{$prefix}{target} = $f;
	$pkg_tree{$prefix}{user} = $user;
	push @{$pkg_tree{$prefix}{srpms}} , $srpm;
	my ($name) = $srpm =~ /(.*)-[^-]+-[^-]+\.src\.rpm$/;

	return $pkg_tree{$prefix}{srpm_name}{$name} = $srpm;
    }

    if ($r =~ /(\d{14}\.\w+\.\w+\.\d+)_([\w-]+)\.(\w+)\.(\w+)\.(\d{14})\.(\d+)\.lock$/) {
	my ($prefix, $arch, $bot, $host, $date, $pid) = ($1, $2, $3, $4, $5, $6);

	$arch = $config->{arch_translation}{$arch} if $config->{arch_translation}{$arch};
	plog('DEBUG', "found lock on $host/$arch for $prefix");

	# Only for build status reporting
	#
	push @{$build_list{"$host/$arch"}}, $prefix;

	if ($arch =~ /noarch/) {
	    plog('DEBUG', "... and $prefix is noarch");
	    $noarch_build{$prefix} = 1;
	    $arch =~ s/-.*//;
	}

	$run{bot}{$arch}{$host}{$bot} = $prefix;

	# this should be in the cache, but waiting for a cache-clean option
	$compildone->{$prefix}{$arch} = 1;

	my $time = read_line("$todo/$f/$m/$s/$r");
	$time = (split ' ', $time)[2];
	push @{$pkg_tree{$prefix}{bot}}, {
	    bot => $bot,
	    host => $host,
	    date => $date,
	    pid => $pid,
	    'arch' => $arch,
	    'time' => $time
	};
    }
}

sub todo_post {
    my ($todo, $f, $m, $s, $r) = @_;

    if ($r =~ /([^_]*)_(.*).lock$/) {
	if (!$pkg_tree{$1}{srpms}) {
	    plog('INFO', "cleaning orphan $r");
	    unlink "$todo/$f/$m/$s/$r";
	}
    }
}

sub done_func {
    my ($_todo, $_f, $_m, $_s, $r) = @_;

    if ($r =~ /(\d{14}\.\w+\.\w+\.\d+)_(.*)\.(done|fail|excluded)$/) {
	my ($prefix, $arch) = ($1, $2);
	$arch = $config->{arch_translation}{$arch} if $config->{arch_translation}{$arch};
	$compildone->{$prefix}{$arch} = 1;
    } elsif ($r =~ /(\d{14}\.\w+\.\w+\.\d+)_(.*\.([^.]+)\.rpm)$/) {
	my ($prefix, $rpm) = ($1, $2);
	plog('DEBUG', "found already built rpm $rpm ($prefix)");
	push @{$pkg_tree{$prefix}{rpms}} , $rpm;
    }
}


check_upload_tree(\%run, $todo, \&todo_func, \&todo_post);

# getting already compiled packages
# The cache should not be needed if the .done file are removed as the same
# time as the src.rpm in the todo tree
check_upload_tree(\%run, $done, \&done_func,);


#
# Part 1: get results from finished builds
#

plog('MSG', "check build bot results");

my %later;
foreach my $prefix (keys %pkg_tree) {
    my $ent = $pkg_tree{$prefix};
    my $path = $ent->{path};
    my $user = $ent->{user};

    # Local pathnames
    my $done_dir = "$done/$path";
    my $todo_dir = "$todo/$path";
    my $fail_dir = "$failure/$path";

    bot: foreach my $bot_list (@{$ent->{bot}}) {
	my ($bot, $host, $date, $pid, $arch, $time) =
			@$bot_list{qw(bot host date pid arch time)};

	my $bot_conf = $config->{bot}{$arch}{$host}{$bot};
        my $remote = ssh_setup($config->{ssh_options},
					$bot_conf->{user}, $host);

	# If our build is noarch, set arch appropriately.
	#
	my $lock_file =
	    "$todo_dir/${prefix}_$arch-noarch.$bot.$host.$date.$pid.lock";

	if (-f $lock_file) {
	    plog('DEBUG', "$prefix is noarch");
	    $arch = "noarch";
	} else {
	    $lock_file =~ s/-noarch//;
	}

	my $prefix_dir = "$bot_conf->{packages}/$path/$prefix/";
	my $status_file = "$prefix_dir/log/status.log";

	plog('INFO', "check status: $host/$arch ($bot [$pid])");
	my $status = sout($remote, "cat $status_file");
	my $success;
	my $fail;
	my $later;

	# Check if the build bot finished on the other side
	#
	if ($status) {
	    plog('INFO', "check result: $host/$arch ($bot [$pid])");
	    foreach my $res (split "\n", $status) {
		my ($p, $r) = $res =~ /(.*):\s+(.*)/;
		plog('DEBUG', $res);
		if ($r eq 'install_deps_failure') {
		    plog('FAIL', "install deps failure, rebuild later: $p");
		    $later{$prefix} = 1;
		    $later = 1;
		}
		if ($r ne 'ok') {
		    plog('FAIL', "$r: $p");
		    $fail = 1;
		}
	    }

	    if (!$fail) {
		my @list = split "\n", sout($remote, "ls $prefix_dir");
		my $error;

		my $arch_check = join '|', $arch, if_($untranslated_arch{$arch}, @{$untranslated_arch{$arch}});
		plog('MSG', "checking for $arch_check arch");
		foreach my $result (@list) {
		    $result =~ /\.(src|$arch_check|noarch)\.rpm$/ or next;

		    # do not copy the initial src package
		    $result =~ /^$prefix/ and next;

		    my $result_file = "$done_dir/${prefix}_$result";
		    my $done_file = "$done_dir/${prefix}_$arch.done";

		    plog('OK', "build ok: $result");
		    $compildone->{$prefix}{$arch} = 1;

		    plog('DEBUG', "copy files to done");
		    mkpath($done_dir);
		    if (sget($remote, "$prefix_dir/$result",
				 "$result_file.new")) {
			plog('ERR', "copying $result from $host failed ($!)");
			$error = 1;
			last;
		    } elsif (move("$result_file.new", $result_file)) {
			create_file($done_file, "$bot $host");
			$success = 1;
		    }
		}
		next if $error;

		# Do nothing if the scp failed, wait for the other run
		# (it may be a disk full problem)
		# next if $error;
		#if ($success) {
		# The SRPM should be recreated thus no need to copy it
		# foreach my $srpm (@{$ent->{srpms}}) {
		#     plog("linking $todo_dir/${prefix}_$srpm to $done_dir/${prefix}_$srpm");
		#     link "$todo_dir/${prefix}_$srpm", "$done_dir/${prefix}_$srpm"
		# 	}
		# FIXME Have to remove remote remaining packages and directory
		#}
	    }
	} # if ($status)

	#
	# Handle build failure
	#

	my $proc_state;
	if (!$fail) {
	    chomp($proc_state = sout($remote, "ps h -o state $pid"));
	}

	my $seconds = time()-$time;

	# Reasons for failure
	my $timeout = $seconds > $config->{faildelay};
	my $zombie = $proc_state eq 'Z';
	my $ended = !$proc_state;

	unless ($success || $later || $fail || $timeout || $zombie || $ended) {
	    next bot;
	}

	plog('INFO', "delete lock file for $prefix");
	unlink $lock_file;

	$run{bot}{$arch}{$host}{$bot} = 0;

	if ($later) {
	    next bot;
	}

	if (!$ended && !$fail) {
	    plog('FAIL', "$bot timed out on $host/$arch ($seconds sec) or " .
			"it's dead (status $proc_state), removing lock");
	    $compildone->{$prefix}{$arch} = 0;
	    next bot;
	}

	if ($success && !$fail) {
	    next bot;
	}

	if (!$status) {
	    plog('ERR', "build bot died on $host, reschedule compilation");
	    next bot;
	}

	plog('INFO', "Failure reason: $success || $later || $fail || $timeout || $zombie || $ended");

	plog('FAIL', "build failed");
	create_file("$done_dir/${prefix}_$arch.fail", "$bot $host");
	mkpath($fail_dir);

	if (sget($remote, "$prefix_dir/", "$fail_dir/")) {
	    plog('ERR', "copying from $host:$prefix_dir/ " .
					"to $fail_dir/ failed ($!)");
	    $compildone->{$prefix}{$arch} = 0;
	    # clean the log on the compilation machine
	    ssh($remote, "rm -rf $prefix_dir");
	    next bot;
	}

        # What to do with the previously build packages? Move them to
	# failure, rejected ?
	# 20061220 warly move them to failure for now

	foreach my $rpm (@{$ent->{rpms}}) {
	    my $file = "$done_dir/${prefix}_$rpm";
	    plog('DEBUG', "moving built rpm $file to $fail_dir/${prefix}_$rpm");
	    link $file, "$fail_dir/${prefix}_$rpm";
	    unlink $file;
	}
	# Should clean the queue 
	# Must remove the SRPM and the lock 
	foreach my $srpm (@{$ent->{srpms}}) {                                
	    my $file = "$todo_dir/${prefix}_$srpm";
	    plog('DEBUG', "moving $file to $fail_dir/${prefix}_$srpm");
	    link $file, "$fail_dir/${prefix}_$srpm";
	    delete $pkg_tree{$prefix};
	    unlink $file;
	    # If one arch has been generated, we also have a src.rpm in done
	    $file = "$done_dir/${prefix}_$srpm";
	    if (-f $file) {
		plog('DEBUG', "deleting $file");
		unlink $file;
	    }
	}
	
	# Notify user if build failed
	#
	if ($user) {
	    my $text = "Build of the following packages failed:\n\n";
	    my $srpms = "";
	    foreach my $srpm (@{$ent->{srpms}}) {
		$srpms .= "$srpm ";
		$text .= "- $srpm\n";
	    }

	    my $to = get_author_email($user) || "Unknown <$config->{admin}>";
	    my $cc = undef;
	    my $fpath = "$config->{http_queue}/failure/$path/$prefix";
	    $fpath =~ tr!/!!s;	# Squash double slashes ...
	    $fpath =~ s!/!//!;	# ... except for http://

	    $text .= "\nFailure details available in $fpath/log\n";
	    $text .= "Reason:\n";
	    open my $FP, "$fail_dir/$prefix/log/status.log";
            local $_;
	    while (<$FP>) {
		$text .= $_;
	    }
	    close $FP;

	    $text .= "\nLog files generated:\n";

	    opendir my $DP1, "$fail_dir/$prefix/log/";
	    foreach my $f1 (readdir $DP1) {
		if (! -d "$fail_dir/$prefix/log/$f1" or $f1 =~ m/^\./) {
		    next;
		}

		opendir my $DP2, "$fail_dir/$prefix/log/$f1";
		foreach my $f2 (readdir $DP2) {
		    if ($f2 =~ m/^\./) {
			next;
		    }
		    $text .= "$fpath/log/$f1/$f2\n";
		}
		closedir $DP2;
	    }
	    closedir $DP1;

	    sendmail($to, $cc,
			"Rebuild failed on $arch for $srpms", $text,
			"Ulri the scheduler bot <$config->{admin}>", 0);
	}

	# clean the log on the compilation machine
	ssh($remote, "rm -rf $prefix_dir");

    } # end bot
} # end prefix


#
# Part 2: check queue and start new jobs if a bot is available
#

plog('MSG', "launching new compilations");
my %to_compile;

# do not sort the keys to be able to ignore packages which makes iurt
# crash or just lock ulri somehow

foreach my $prefix (sort keys %pkg_tree) {
    next if $later{$prefix};
    my $ent = $pkg_tree{$prefix};
    my $path = $ent->{path};
    my $media = $ent->{media};
    my $target = $ent->{target};
    my $srpms = $ent->{srpms} or next;
    my $user = $ent->{user};
    if ($user) {
	$user = get_author_email($user) || $config->{packager};
    } else {
	$user = $config->{packager};
    }
    $user =~ s/([<>])/\\$1/g;

    # Local pathnames
    my $done_dir = "$done/$path";
    my $todo_dir = "$todo/$path";

    # Make sure these exist
    mkpath($done_dir);
    mkpath($todo_dir);

    #plog('DEBUG', "searching a bot to compile @$srpms");

    # count noarch todos only once even if searching multiple bots
    my $noarch_countflag = 0;

    # need to find a bot for each arch
    foreach my $arch (keys %{$config->{bot}}) {
	my $exclude;
	my $noarch;

	# Skip this arch if package is building as noarch
	#
	next if $noarch_build{$prefix};

	next if $compildone->{$prefix}{noarch};
	next if $compildone->{$prefix}{$arch};

	# If all packages in a group are noarch, consider the entire group
	# as noarch
	#
	$noarch = 1;
	foreach my $srpm (@$srpms) {
	    if (!check_noarch("$todo_dir/${prefix}_$srpm")) {
		$noarch = 0;
		last;
	    }
	}

	#plog("@$srpms is noarch") if $noarch;

	foreach my $srpm (@$srpms) {
	    if (!check_arch("$todo_dir/${prefix}_$srpm", $arch)) {
		plog('WARN', "excluding from $arch: $srpm");
		$exclude = 1;
		last;
	    }
	}

	if ($exclude) {
	    create_file("$done_dir/${prefix}_$arch.excluded",
					"ulri $arch excluded");
	    next;
	}

	if ($noarch) {
	    plog('DEBUG', "search any bot for @$srpms") unless $noarch_countflag;
	} else {
	    plog('DEBUG', "search $arch bot for @$srpms");
	}

	foreach my $host (keys %{$config->{bot}{$arch}}) {
	    foreach my $bot (keys %{$config->{bot}{$arch}{$host}}) {
		next if $run{bot}{$arch}{$host}{$bot};

		# Enable noarch lock after the first bot snarfs the package
		#
	        $noarch_build{$prefix} = 1 if $noarch;

		plog('INFO', "building on $host/$arch ($bot)");

		$run{bot}{$arch}{$host}{$bot} = $prefix;
		$compildone->{$prefix}{$arch} = 1;

		my $bot_conf = $config->{bot}{$arch}{$host}{$bot};
        	my $remote = ssh_setup($config->{ssh_options},
					$bot_conf->{user}, $host);

		my $prefix_dir = "$bot_conf->{packages}/$path/$prefix/";
		my $status_file = "$prefix_dir/log/status.log";

		# Copy packages to build node
		#
		# create also the log dir for botcmd.log
		next if ssh($remote, "mkdir -p $prefix_dir/log");
		my $pkgs = "";
		my $ok = 1;
		foreach my $srpm (@$srpms) {
		    plog('NOTIFY', "Send to $host/$arch: $srpm");
		    $ok &&= !sput($remote, "$todo_dir/${prefix}_$srpm",
					"$prefix_dir/$srpm");
		    $pkgs .= " $prefix_dir/$srpm";
		}
		next unless $ok;

		# spawn remote build bot and save output on local file
		# (remove status.log before building, otherwise we can have
		# a install_deps_failure and reschedule even if the package
		# is currently building)
		#
		plog('DEBUG', "remove status file");
		ssh($remote, "rm $status_file 2>/dev/null");

		plog('INFO', "Execute build command on $host/$arch");

		my $temp = mktemp("$config->{tmp}/ulri.tmp.$prefix.XXXXX");
		my $cmd = $bot_conf->{command};
		$cmd =~ s!__ARCH__!$arch!g;
		$cmd =~ s!__DIR__!$path/$prefix!g;
		$cmd =~ s!__TARGET__!$target!g;
		$cmd =~ s!__PACKAGER__!$user!g;

		my $media_to_add;
		if (ref $config->{media}{$target}{$media}) {
		    $media_to_add = join ' ', @{$config->{media}{$target}{$media}};
		} elsif (ref $config->{media}{default}{$media}) { 
		    $media_to_add = join ' ', @{$config->{media}{default}{$media}};
		}
		plog('DEBUG', "Will compile only with media $media_to_add");
		$cmd =~ s!__MEDIA__!$media_to_add!g;

		#- allow x86_64 hosts to build i586 packages
		if ($arch eq 'i586') {
		    $cmd = "setarch i586 $cmd";
		}

		plog('DEBUG', "Build $pkgs");
		ssh($remote, "\'echo PID=\$\$; exec $cmd $pkgs &>$prefix_dir/log/botcmd.\$(date +%s).\$(hostname -s).log\' > $temp &");

		# wait 10 seconds or until we have the log file
		# plus 20 seconds if it timeouts.
		#
		if (check_file_timeout($temp, 10)) {
		    plog('WARN', "Timeout waiting for building start. Waiting more 20s.");
		    if (check_file_timeout($temp, 20)) {
			plog('WARN', "Timeout! Abandoning the build.");
			last;
		    }
		}

		# get remote PID from log file
		#
		my $pid = get_pid_from_file($temp);
		unlink $temp;
		plog('DEBUG', "remote pid $pid");
		if (!$pid) {
		    plog('WARN', "pid is unknown, abandoning the build.");
		    last;
		}

		# create lock file
		#
		my $lock_arch = $noarch ? "$arch-noarch" : $arch;
		my $lock_file = "$todo_dir/${prefix}_" .
				"$lock_arch.$bot.$host.$fulldate.$pid.lock";
		plog('DEBUG', "create lock $lock_file");
		create_file($lock_file, "$program_name $$", time());

		last;
	    }
	    last if $compildone->{$prefix}{$arch}; 
	    last if $compildone->{$prefix}{noarch}; 
	}

	# Count packages to compile for each architecture. Count noarch
	# package only once.
	#
	$arch = 'noarch' if $noarch;
	unless ($compildone->{$prefix}{$arch}) { 
	    $to_compile{$arch}++ if !($noarch && $noarch_countflag);
	}
	$noarch_countflag = 1 if $noarch;
    }
}

plog('MSG', "Current status");

if (keys %build_list) {
    plog('INFO', "currently building:");
    map { plog('INFO', "  $_: " . join('', @{$build_list{$_}})) } keys %build_list;
}

plog('INFO', "jobs in queue:", %to_compile ?
    map { sprintf("%s(%d)", $_, $to_compile{$_}) } keys %to_compile : "none");


#dump_cache(\%run);
unlink $pidfile;
exit();


#
# Subroutines
#

sub get_pid_from_file {
    my $file = shift;

    my $pid;
    open my $FILE, $file || die "FATAL: can't open $file";
    local $_;
    while (<$FILE>) { last if ($pid) = /^PID=(\d+)/ }

    $pid;
}

sub create_file {
    my $file = shift;
    my @contents = @_;
	
    open my $FILE, ">$file" or die "FATAL: can't open $file for writing";
    print $FILE "@contents";
}

sub read_line {
    my $file = shift;

    open my $FILE, "<$file" or die "FATAL: can't open $file for reading";
    my $contents = <$FILE>;

    $contents;
}

sub check_file_timeout {
    my $file = shift;
    my $time = shift;

    my $i = 0;
    while ($i < $time && (!-f $file || -z $file)) { sleep 1; $i++ }

    $i == $time;
}

__END__

# ulri ends here

Discussion
----------
 
20060802 (Warly)

* I prefer creating a separate scheduler, so that it can eventually call
  other bots.
* bots should be able to take packages by themselves.
* Iurt will perform several checks, they have to be standard and usable
  by the maintainer, the results must be put in a visible directory or path
* We can put packages either in a dir or to prefix all files with the date
  and uploader. Having all files in a dir will make the listing simpler.
  Prefixing the files could be problematic if we base the rpm name and
  version parsing on the filename.
* ulri knows the prefix, he could ask iurt to put the packages in a dir
  with the same prefix.

20060806 (Warly)

* All the packages are put in done, then the final youri is run to put them
  in queue/

20061104 (claudio)

* Instead if having configuration defaults for our environment and using
  ulri with the defaults, it would be nicer to have minimalistic/generic
  defaults and install a configuration file in kenobi
* Ulri's configuration file could be renamed to .ulri.conf instead of 
  .upload.conf.   ==> ok, it's also used by emi