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
| | # Copyright (C) all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# "lei add-external --mirror" support (also "public-inbox-clone");
package PublicInbox::LeiMirror;
use v5.12;
use parent qw(PublicInbox::IPC);
use IO::Uncompress::Gunzip qw(gunzip $GunzipError);
use IO::Compress::Gzip qw(gzip $GzipError);
use PublicInbox::Spawn qw(popen_rd spawn run_die);
use File::Path ();
use File::Temp ();
use File::Spec ();
use Fcntl qw(SEEK_SET O_CREAT O_EXCL O_WRONLY);
use Carp qw(croak);
use URI;
use PublicInbox::Config;
use PublicInbox::Inbox;
use PublicInbox::LeiCurl;
use PublicInbox::OnDestroy;
our $LIVE; # pid => callback
sub _wq_done_wait { # dwaitpid callback (via wq_eof)
my ($arg, $pid) = @_;
my ($mrr, $lei) = @$arg;
my $f = "$mrr->{dst}/mirror.done";
if ($?) {
$lei->child_error($?);
} elsif (!$mrr->{dry_run} && !unlink($f)) {
warn("unlink($f): $!\n") unless $!{ENOENT};
} else {
if (!$mrr->{dry_run} && $lei->{cmd} ne 'public-inbox-clone') {
require PublicInbox::LeiAddExternal;
PublicInbox::LeiAddExternal::_finish_add_external(
$lei, $mrr->{dst});
}
$lei->qerr("# mirrored $mrr->{src} => $mrr->{dst}");
}
$lei->dclose;
}
# for old installations without manifest.js.gz
sub try_scrape {
my ($self, $fallback_manifest) = @_;
my $uri = URI->new($self->{src});
my $lei = $self->{lei};
my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return;
my $cmd = $curl->for_uri($lei, $uri, qw(-f --compressed));
my $opt = { 0 => $lei->{0}, 2 => $lei->{2} };
my $fh = popen_rd($cmd, undef, $opt);
my $html = do { local $/; <$fh> } // die "read(curl $uri): $!";
close($fh) or return $lei->child_error($?, "@$cmd failed");
# we grep with URL below, we don't want Subject/From headers
# making us clone random URLs. This assumes remote instances
# prior to public-inbox 1.7.0
# 5b96edcb1e0d8252 (www: move mirror instructions to /text/, 2021-08-28)
my @html = split(/<hr>/, $html);
my @urls = ($html[-1] =~ m!\bgit clone --mirror ([a-z\+]+://\S+)!g);
if (!@urls && $fallback_manifest) {
warn <<EOM;
W: failed to extract URLs from $uri, trying manifest.js.gz...
EOM
return start_clone_url($self);
}
my $url = $uri->as_string;
chop($url) eq '/' or die "BUG: $uri not canonicalized";
# since this is for old instances w/o manifest.js.gz, try v1 first
return clone_v1($self) if grep(m!\A\Q$url\E/*\z!, @urls);
if (my @v2_urls = grep(m!\A\Q$url\E/[0-9]+\z!, @urls)) {
my %v2_epochs = map {
my ($n) = (m!/([0-9]+)\z!);
$n => [ URI->new($_), '' ]
} @v2_urls; # uniq
clone_v2_prep($self, \%v2_epochs);
delete local $lei->{opt}->{epoch};
clone_all($self);
return;
}
# filter out common URLs served by WWW (e.g /$MSGID/T/)
if (@urls && $url =~ s!/+[^/]+\@[^/]+/.*\z!! &&
grep(m!\A\Q$url\E/*\z!, @urls)) {
die <<"";
E: confused by scraping <$uri>, did you mean <$url>?
}
@urls and die <<"";
E: confused by scraping <$uri>, got ambiguous results:
@urls
die "E: scraping <$uri> revealed nothing\n";
}
sub clone_cmd {
my ($lei, $opt) = @_;
my @cmd = qw(git);
$opt->{$_} = $lei->{$_} for (0..2);
# we support "-c $key=$val" for arbitrary git config options
# e.g.: git -c http.proxy=socks5h://127.0.0.1:9050
push(@cmd, '-c', $_) for @{$lei->{opt}->{c} // []};
push @cmd, qw(clone --mirror);
push @cmd, '-q' if $lei->{opt}->{quiet} ||
($lei->{opt}->{jobs} // 1) > 1;
push @cmd, '-v' if $lei->{opt}->{verbose};
# XXX any other options to support?
# --reference is tricky with multiple epochs, but handled
# automatically if using manifest.js.gz
@cmd;
}
sub ft_rename ($$$) {
my ($ft, $dst, $open_mode) = @_;
my @st = stat($dst);
my $mode = @st ? ($st[2] & 07777) : ($open_mode & ~umask);
chmod($mode, $ft) or croak "E: chmod($ft): $!";
require File::Copy;
File::Copy::mv($ft->filename, $dst) or croak "E: mv($ft => $dst): $!";
$ft->unlink_on_destroy(0);
}
sub _get_txt_start { # non-fatal
my ($self, $endpoint, $fini) = @_;
my $uri = URI->new($self->{cur_src} // $self->{src});
my $lei = $self->{lei};
my $path = $uri->path;
chop($path) eq '/' or die "BUG: $uri not canonicalized";
$uri->path("$path/$endpoint");
my $f = (split(m!/!, $endpoint))[-1];
my $ft = File::Temp->new(TEMPLATE => "$f-XXXX", TMPDIR => 1);
my $opt = { 0 => $lei->{0}, 1 => $lei->{1}, 2 => $lei->{2} };
my $cmd = $self->{curl}->for_uri($lei, $uri, qw(-f --compressed -R -o),
$ft->filename);
my $jobs = $lei->{opt}->{jobs} // 1;
reap_live() while keys(%$LIVE) >= $jobs;
$lei->qerr("# @$cmd");
return if $self->{dry_run};
$self->{"-get_txt.$endpoint"} = [ $ft, $cmd, $uri ];
$LIVE->{spawn($cmd, undef, $opt)} =
[ \&_get_txt_done, $self, $endpoint, $fini ];
}
sub _get_txt_done { # returns true on error (non-fatal), undef on success
my ($self, $endpoint) = @_;
my ($fh, $cmd, $uri) = @{delete $self->{"-get_txt.$endpoint"}};
my $cerr = $?;
$? = 0; # don't influence normal lei exit
return warn("$uri missing\n") if ($cerr >> 8) == 22;
return warn("# @$cmd failed (non-fatal)\n") if $cerr;
seek($fh, SEEK_SET, 0) or die "seek: $!";
$self->{"mtime.$endpoint"} = (stat($fh))[9];
local $/;
$self->{"txt.$endpoint"} = <$fh>;
undef; # success
}
sub _write_inbox_config {
my ($self) = @_;
my $buf = delete($self->{'txt._/text/config/raw'}) // return;
my $dst = $self->{cur_dst} // $self->{dst};
my $f = "$dst/inbox.config.example";
open my $fh, '>', $f or die "open($f): $!";
print $fh $buf or die "print: $!";
chmod(0444 & ~umask, $fh) or die "chmod($f): $!";
my $mtime = delete $self->{'mtime._/text/config/raw'};
$fh->flush or die "flush($f): $!";
if (defined $mtime) {
utime($mtime, $mtime, $fh) or die "utime($f): $!";
}
my $cfg = PublicInbox::Config->git_config_dump($f, $self->{lei}->{2});
my $ibx = $self->{ibx} = {};
for my $sec (grep(/\Apublicinbox\./, @{$cfg->{-section_order}})) {
for (qw(address newsgroup nntpmirror)) {
$ibx->{$_} = $cfg->{"$sec.$_"};
}
}
}
sub set_description ($) {
my ($self) = @_;
my $dst = $self->{cur_dst} // $self->{dst};
my $f = "$dst/description";
open my $fh, '+>>', $f or die "open($f): $!";
seek($fh, 0, SEEK_SET) or die "seek($f): $!";
my $d = do { local $/; <$fh> } // die "read($f): $!";
chomp(my $orig = $d);
while (defined($d) && ($d =~ m!^\(\$INBOX_DIR/description missing\)! ||
$d =~ /^Unnamed repository/ || $d !~ /\S/)) {
$d = delete($self->{'txt.description'});
}
$d //= 'mirror of '.($self->{cur_src} // $self->{src});
chomp $d;
return if $d eq $orig;
seek($fh, 0, SEEK_SET) or die "seek($f): $!";
truncate($fh, 0) or die "truncate($f): $!";
print $fh $d, "\n" or die "print($f): $!";
close $fh or die "close($f): $!";
}
sub index_cloned_inbox {
my ($self, $iv) = @_;
my $lei = $self->{lei};
eval { set_description($self) };
warn $@ if $@;
# n.b. public-inbox-clone works w/o (SQLite || Xapian)
# lei is useless without Xapian + SQLite
if ($lei->{cmd} ne 'public-inbox-clone') {
require PublicInbox::InboxWritable;
require PublicInbox::Admin;
my $ibx = delete($self->{ibx}) // {
address => [ 'lei@example.com' ],
version => $iv,
};
$ibx->{inboxdir} = $self->{cur_dst} // $self->{dst};
PublicInbox::Inbox->new($ibx);
PublicInbox::InboxWritable->new($ibx);
my $opt = {};
for my $sw ($lei->index_opt) {
my ($k) = ($sw =~ /\A([\w-]+)/);
$opt->{$k} = $lei->{opt}->{$k};
}
# force synchronous dwaitpid for v2:
local $PublicInbox::DS::in_loop = 0;
my $cfg = PublicInbox::Config->new(undef, $lei->{2});
my $env = PublicInbox::Admin::index_prepare($opt, $cfg);
local %ENV = (%ENV, %$env) if $env;
PublicInbox::Admin::progress_prepare($opt, $lei->{2});
PublicInbox::Admin::index_inbox($ibx, undef, $opt);
}
return if defined $self->{cur_dst}; # one of many repos to clone
open my $x, '>', "$self->{dst}/mirror.done"; # for _wq_done_wait
}
sub run_reap {
my ($lei, $cmd, $opt) = @_;
$lei->qerr("# @$cmd");
waitpid(spawn($cmd, undef, $opt), 0) // die "waitpid: $!";
my $ret = $?;
$? = 0; # don't let it influence normal exit
$ret;
}
sub start_clone {
my ($self, $cmd, $opt, $fini) = @_;
my $jobs = $self->{lei}->{opt}->{jobs} // 1;
reap_live() while keys(%$LIVE) >= $jobs;
$self->{lei}->qerr("# @$cmd");
return if $self->{dry_run};
$LIVE->{spawn($cmd, undef, $opt)} = [ \&reap_clone, $self, $cmd, $fini ]
}
sub clone_v1 {
my ($self, $nohang) = @_;
my $lei = $self->{lei};
my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return;
my $uri = URI->new($self->{cur_src} // $self->{src});
defined($lei->{opt}->{epoch}) and
die "$uri is a v1 inbox, --epoch is not supported\n";
my $pfx = $curl->torsocks($lei, $uri) or return;
my $dst = $self->{cur_dst} // $self->{dst};
my $fini = PublicInbox::OnDestroy->new($$, \&v1_done, $self);
my $cmd = [ @$pfx, clone_cmd($lei, my $opt = {}), "$uri", $dst ];
my $ref = $self->{-ent} ? $self->{-ent}->{reference} : undef;
defined($ref) && -e "$self->{dst}$ref" and
push @$cmd, '--reference', "$self->{dst}$ref";
start_clone($self, $cmd, $opt, $fini);
if (!$self->{-is_epoch} && $lei->{opt}->{'inbox-config'} =~
/\A(?:always|v1)\z/s) {
_get_txt_start($self, '_/text/config/raw', $fini);
}
my $d = $self->{-ent} ? $self->{-ent}->{description} : undef;
$self->{'txt.description'} = $d if defined $d;
(!defined($d) && !$nohang) and
_get_txt_start($self, 'description', $fini);
reap_live() until ($nohang || !keys(%$LIVE)); # for non-manifest clone
}
sub parse_epochs ($$) {
my ($opt_epochs, $v2_epochs) = @_; # $epochs "LOW..HIGH"
$opt_epochs // return; # undef => all epochs
my ($lo, $dotdot, $hi, @extra) = split(/(\.\.)/, $opt_epochs);
undef($lo) if ($lo // '') eq '';
my $re = qr/\A~?[0-9]+\z/;
if (@extra || (($lo // '0') !~ $re) ||
(($hi // '0') !~ $re) ||
!(grep(defined, $lo, $hi))) {
die <<EOM;
--epoch=$opt_epochs not in the form of `LOW..HIGH', `LOW..', nor `..HIGH'
EOM
}
my @n = sort { $a <=> $b } keys %$v2_epochs;
for (grep(defined, $lo, $hi)) {
if (/\A[0-9]+\z/) {
$_ > $n[-1] and die
"`$_' exceeds maximum available epoch ($n[-1])\n";
$_ < $n[0] and die
"`$_' is lower than minimum available epoch ($n[0])\n";
} elsif (/\A~([0-9]+)/) {
my $off = -$1 - 1;
$n[$off] // die "`$_' is out of range\n";
$_ = $n[$off];
} else { die "`$_' not understood\n" }
}
defined($lo) && defined($hi) && $lo > $hi and die
"low value (`$lo') exceeds high (`$hi')\n";
$lo //= $n[0] if $dotdot;
$hi //= $n[-1] if $dotdot;
$hi //= $lo;
my $want = {};
for ($lo..$hi) {
if (defined $v2_epochs->{$_}) {
$want->{$_} = 1;
} else {
warn
"# epoch $_ is not available (non-fatal, $lo..$hi)\n";
}
}
$want
}
sub init_placeholder ($$$) {
my ($src, $edst, $ent) = @_;
PublicInbox::Import::init_bare($edst);
my $f = "$edst/config";
open my $fh, '>>', $f or die "open($f): $!";
print $fh <<EOM or die "print($f): $!";
[remote "origin"]
url = $src
fetch = +refs/*:refs/*
mirror = true
; This git epoch was created read-only and "public-inbox-fetch"
; will not fetch updates for it unless write permission is added.
; Hint: chmod +w $edst
EOM
if (defined($ent->{owner})) {
print $fh <<EOM or die "print($f): $!";
[gitweb]
owner = $ent->{owner}
EOM
}
close $fh or die "close($f): $!";
my %map = (head => 'HEAD', description => undef);
while (my ($key, $fn) = each %map) {
my $val = $ent->{$key} // next;
$fn //= $key;
$fn = "$edst/$fn";
open $fh, '>', $fn or die "open($fn): $!";
print $fh $val, "\n" or die "print($fn): $!";
close $fh or die "close($fn): $!";
}
}
sub reap_clone { # async, called via SIGCHLD
my ($self, $cmd) = @_;
my $cerr = $?;
$? = 0; # don't let it influence normal exit
if ($cerr) {
kill('TERM', keys %$LIVE);
$self->{lei}->child_error($cerr, "@$cmd failed");
}
}
sub v1_done { # called via OnDestroy
my ($self) = @_;
return if $self->{dry_run} || !$LIVE;
_write_inbox_config($self);
my $dst = $self->{cur_dst} // $self->{dst};
if (defined(my $o = $self->{-ent} ? $self->{-ent}->{owner} : undef)) {
run_die([qw(git config -f), "$dst/config", 'gitweb.owner', $o]);
}
my $o = "$dst/objects";
if (open(my $fh, '<', "$o/info/alternates")) {
chomp(my @l = <$fh>);
for (@l) { $_ = File::Spec->abs2rel($_, $o)."\n" }
my $f = File::Temp->new(TEMPLATE => '.XXXX', DIR => "$o/info");
print $f @l;
$f->flush or die "flush($f): $!";
rename($f->filename, "$o/info/alternates") or
die "rename($f, $o/info/alternates): $!";
$f->unlink_on_destroy(0);
}
return if ($self->{-is_epoch} ||
$self->{lei}->{opt}->{'inbox-config'} ne 'always');
write_makefile($dst, 1);
index_cloned_inbox($self, 1);
}
sub v2_done { # called via OnDestroy
my ($self) = @_;
return if $self->{dry_run} || !$LIVE;
my $dst = $self->{cur_dst} // $self->{dst};
require PublicInbox::Lock;
my $lk = bless { lock_path => "$dst/inbox.lock" }, 'PublicInbox::Lock';
my $lck = $lk->lock_for_scope($$);
_write_inbox_config($self);
require PublicInbox::MultiGit;
my $mg = PublicInbox::MultiGit->new($dst, 'all.git', 'git');
$mg->fill_alternates;
for my $i ($mg->git_epochs) { $mg->epoch_cfg_set($i) }
for my $edst (@{delete($self->{-read_only}) // []}) {
my @st = stat($edst) or die "stat($edst): $!";
chmod($st[2] & 0555, $edst) or die "chmod(a-w, $edst): $!";
}
write_makefile($dst, 2);
undef $lck; # unlock
index_cloned_inbox($self, 2);
}
sub reap_live {
my $pid = waitpid(-1, 0) // die "waitpid(-1): $!";
if (my $x = delete $LIVE->{$pid}) {
my $cb = shift @$x;
$cb->(@$x);
} else {
warn "reaped unknown PID=$pid ($?)\n";
}
}
sub clone_v2_prep ($$;$) {
my ($self, $v2_epochs, $m) = @_; # $m => manifest.js.gz hashref
my $lei = $self->{lei};
my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return;
my $first_uri = (map { $_->[0] } values %$v2_epochs)[0];
my $pfx = $curl->torsocks($lei, $first_uri) or return;
my $dst = $self->{cur_dst} // $self->{dst};
my $want = parse_epochs($lei->{opt}->{epoch}, $v2_epochs);
my $task = $m ? bless { %$self }, __PACKAGE__ : $self;
delete $task->{todo}; # $self->{todo} still exists
my (@src_edst, @skip, $desc, @entv);
for my $nr (sort { $a <=> $b } keys %$v2_epochs) {
my ($uri, $key) = @{$v2_epochs->{$nr}};
my $src = $uri->as_string;
my $edst = $dst;
$src =~ m!/([0-9]+)(?:\.git)?\z! or die <<"";
failed to extract epoch number from $src
$1 + 0 == $nr or die "BUG: <$uri> miskeyed $1 != $nr";
$edst .= "/git/$nr.git";
my $ent;
if ($m) {
$ent = $m->{$key} //
die("BUG: `$key' not in manifest.js.gz");
if (defined(my $d = $ent->{description})) {
$d =~ s/ \[epoch [0-9]+\]\z//s;
$desc = $d;
}
}
if (!$want || $want->{$nr}) {
push @src_edst, $src, $edst;
push @entv, $edst, $ent;
$self->{any_want}->{$key} = 1;
} else { # create a placeholder so users only need to chmod +w
init_placeholder($src, $edst, $ent);
push @{$task->{-read_only}}, $edst;
push @skip, $key;
}
}
# filter out the epochs we skipped
$self->{-culled_manifest} = 1 if $m && delete(@$m{@skip});
(!$self->{dry_run} && !-d $dst) and File::Path::mkpath($dst);
my $fini = PublicInbox::OnDestroy->new($$, \&v2_done, $task);
$lei->{opt}->{'inbox-config'} =~ /\A(?:always|v2)\z/s and
_get_txt_start($task, '_/text/config/raw', $fini);
defined($desc) ? ($task->{'txt.description'} = $desc) :
_get_txt_start($task, 'description', $fini);
while (@entv) {
my ($edst, $ent) = splice(@entv, 0, 2);
my $etask = bless { %$task }, __PACKAGE__;
$etask->{-ent} = $ent; # may have {reference}
$etask->{cur_src} = shift @src_edst // die 'BUG: no cur_src';
$etask->{cur_dst} = shift @src_edst // die 'BUG: no cur_dst';
$etask->{cur_dst} eq $edst or
die "BUG: `$etask->{cur_dst}' != `$edst'";
$etask->{-is_epoch} = $fini;
push @{$self->{todo}->{($ent->{reference} // '')}}, $etask;
}
}
sub decode_manifest ($$$) {
my ($fh, $fn, $uri) = @_;
my $js;
my $gz = do { local $/; <$fh> } // die "slurp($fn): $!";
gunzip(\$gz => \$js, MultiStream => 1) or
die "gunzip($uri): $GunzipError\n";
my $m = eval { PublicInbox::Config->json->decode($js) };
die "$uri: error decoding `$js': $@\n" if $@;
ref($m) eq 'HASH' or die "$uri unknown type: ".ref($m);
$m;
}
sub multi_inbox ($$$) {
my ($self, $path, $m) = @_;
my $incl = $self->{lei}->{opt}->{include};
my $excl = $self->{lei}->{opt}->{exclude};
# assuming everything not v2 is v1, for now
my @v1 = sort grep(!m!.+/git/[0-9]+\.git\z!, keys %$m);
my @v2_epochs = sort grep(m!.+/git/[0-9]+\.git\z!, keys %$m);
my $v2 = {};
for (@v2_epochs) {
m!\A(/.+)/git/[0-9]+\.git\z! or die "BUG: $_";
push @{$v2->{$1}}, $_;
}
my $n = scalar(keys %$v2) + scalar(@v1);
my @orig = defined($incl // $excl) ? (keys %$v2, @v1) : ();
if (defined $incl) {
my $re = '(?:'.join('\\z|', map {
$self->{lei}->glob2re($_) // qr/\A\Q$_\E/
} @$incl).'\\z)';
my @gone = delete @$v2{grep(!/$re/, keys %$v2)};
delete @$m{map { @$_ } @gone} and $self->{-culled_manifest} = 1;
delete @$m{grep(!/$re/, @v1)} and $self->{-culled_manifest} = 1;
@v1 = grep(/$re/, @v1);
}
if (defined $excl) {
my $re = '(?:'.join('\\z|', map {
$self->{lei}->glob2re($_) // qr/\A\Q$_\E/
} @$excl).'\\z)';
my @gone = delete @$v2{grep(/$re/, keys %$v2)};
delete @$m{map { @$_ } @gone} and $self->{-culled_manifest} = 1;
delete @$m{grep(/$re/, @v1)} and $self->{-culled_manifest} = 1;
@v1 = grep(!/$re/, @v1);
}
my $ret; # { v1 => [ ... ], v2 => { "/$inbox_name" => [ epochs ] }}
$ret->{v1} = \@v1 if @v1;
$ret->{v2} = $v2 if keys %$v2;
$ret //= @orig ? "Nothing to clone, available repositories:\n\t".
join("\n\t", sort @orig)
: "Nothing available to clone\n";
my $path_pfx = '';
# PSGI mount prefixes and manifest.js.gz prefixes don't always align...
if (@v2_epochs) {
until (grep(m!\A\Q$$path\E/git/[0-9]+\.git\z!,
@v2_epochs) == @v2_epochs) {
$$path =~ s!\A(/[^/]+)/!/! or last;
$path_pfx .= $1;
}
} elsif (@v1) {
while (!defined($m->{$$path}) && $$path =~ s!\A(/[^/]+)/!/!) {
$path_pfx .= $1;
}
}
($path_pfx, $n, $ret);
}
sub clone_all {
my ($self, $m) = @_;
my $todo = delete $self->{todo};
my $nodep = delete $todo->{''};
# do not download unwanted deps
my $any_want = delete $self->{any_want};
my @unwanted = grep { !$any_want->{$_} } keys %$todo;
my @nodep = delete(@$todo{@unwanted});
push(@$nodep, @$_) for @nodep;
# handle no-dependency repos, first
for (@$nodep) {
clone_v1($_, 1);
return if $self->{lei}->{child_error};
}
# resolve references, deepest, first:
while (scalar keys %$todo) {
for my $x (keys %$todo) {
my ($nr, $nxt);
# resolve multi-level references
while ($m && defined($nxt = $m->{$x}->{reference})) {
exists($todo->{$nxt}) or last;
die <<EOM if ++$nr > 1000;
E: dependency loop detected (`$x' => `$nxt')
EOM
$x = $nxt;
}
my $y = delete $todo->{$x} // next; # already done
for (@$y) {
clone_v1($_, 1);
return if $self->{lei}->{child_error};
}
last; # restart %$todo iteration
}
}
reap_live() while keys(%$LIVE);
}
sub dump_manifest ($$) {
my ($m, $ft) = @_;
# write the smaller manifest if epochs were skipped so
# users won't have to delete manifest if they +w an
# epoch they no longer want to skip
my $json = PublicInbox::Config->json->encode($m);
my $mtime = (stat($ft))[9];
seek($ft, SEEK_SET, 0) or die "seek($ft): $!";
truncate($ft, 0) or die "truncate($ft): $!";
gzip(\$json => $ft) or die "gzip($ft): $GzipError";
$ft->flush or die "flush($ft): $!";
utime($mtime, $mtime, "$ft") or die "utime(..., $ft): $!";
}
# FIXME: this gets confused by single inbox instance w/ global manifest.js.gz
sub try_manifest {
my ($self) = @_;
my $uri = URI->new($self->{src});
my $lei = $self->{lei};
my $curl = $self->{curl} //= PublicInbox::LeiCurl->new($lei) or return;
my $path = $uri->path;
chop($path) eq '/' or die "BUG: $uri not canonicalized";
$uri->path($path . '/manifest.js.gz');
my $ft = File::Temp->new(TEMPLATE => '.manifest-XXXX',
UNLINK => 1, TMPDIR => 1, SUFFIX => '.tmp');
my $cmd = $curl->for_uri($lei, $uri, qw(-f -R -o), $ft->filename);
my %opt = map { $_ => $lei->{$_} } (0..2);
my $cerr = run_reap($lei, $cmd, \%opt);
if ($cerr) {
return try_scrape($self) if ($cerr >> 8) == 22; # 404 missing
return $lei->child_error($cerr, "@$cmd failed");
}
my $m = eval { decode_manifest($ft, $ft, $uri) };
if ($@) {
warn $@;
return try_scrape($self);
}
my ($path_pfx, $n, $multi) = multi_inbox($self, \$path, $m);
return $lei->child_error(1, $multi) if !ref($multi);
my $v2 = delete $multi->{v2};
local $self->{todo} = {};
if ($v2) {
for my $name (sort keys %$v2) {
my $epochs = delete $v2->{$name};
my %v2_epochs = map {
$uri->path($n > 1 ? $path_pfx.$path.$_
: $path_pfx.$_);
my ($e) = ("$uri" =~ m!/([0-9]+)\.git\z!);
$e // die "no [0-9]+\.git in `$uri'";
$e => [ $uri->clone, $_ ];
} @$epochs;
("$uri" =~ m!\A(.+/)git/[0-9]+\.git\z!) or
die "BUG: `$uri' !~ m!/git/[0-9]+.git!";
local $self->{cur_src} = $1;
local $self->{cur_dst} = $self->{dst};
if ($n > 1 && $uri->path =~ m!\A\Q$path_pfx$path\E/(.+)/
git/[0-9]+\.git\z!x) {
$self->{cur_dst} .= "/$1";
}
index($self->{cur_dst}, "\n") >= 0 and die <<EOM;
E: `$self->{cur_dst}' must not contain newline
EOM
clone_v2_prep($self, \%v2_epochs, $m);
return if $self->{lei}->{child_error};
}
}
if (my $v1 = delete $multi->{v1}) {
my $p = $path_pfx.$path;
chop($p) if substr($p, -1, 1) eq '/';
$uri->path($p);
for my $name (@$v1) {
my $task = bless { %$self }, __PACKAGE__;
$task->{-ent} = $m->{$name} //
die("BUG: no `$name' in manifest");
$task->{cur_src} = "$uri";
$task->{cur_dst} = $task->{dst};
if ($n > 1) {
$task->{cur_dst} .= $name;
$task->{cur_src} .= $name;
}
index($task->{cur_dst}, "\n") >= 0 and die <<EOM;
E: `$task->{cur_dst}' must not contain newline
EOM
$task->{cur_src} .= '/';
my $dep = $task->{-ent}->{reference} // '';
push @{$self->{todo}->{$dep}}, $task; # for clone_all
$self->{any_want}->{$name} = 1;
}
}
delete local $lei->{opt}->{epoch} if defined($v2);
clone_all($self, $m);
return if $self->{lei}->{child_error} || $self->{dry_run};
# set by clone_v2_prep/-I/--exclude
dump_manifest($m => $ft) if delete $self->{-culled_manifest};
ft_rename($ft, "$self->{dst}/manifest.js.gz", 0666);
open my $x, '>', "$self->{dst}/mirror.done"; # for _wq_done_wait
}
sub start_clone_url {
my ($self) = @_;
return try_manifest($self) if $self->{src} =~ m!\Ahttps?://!;
die "TODO: non-HTTP/HTTPS clone of $self->{src} not supported, yet";
}
sub do_mirror { # via wq_io_do or public-inbox-clone
my ($self) = @_;
my $lei = $self->{lei};
umask($lei->{client_umask}) if defined $lei->{client_umask};
eval {
my $ic = $lei->{opt}->{'inbox-config'} //= 'always';
$ic =~ /\A(?:v1|v2|always|never)\z/s or die <<"";
--inbox-config must be one of `always', `v2', `v1', or `never'
local $LIVE;
my $iv = $lei->{opt}->{'inbox-version'} //
return start_clone_url($self);
return clone_v1($self) if $iv == 1;
die "bad --inbox-version=$iv\n" if $iv != 2;
die <<EOM if $self->{src} !~ m!://!;
cloning local v2 inboxes not supported
EOM
try_scrape($self, 1);
};
$lei->fail($@) if $@;
}
sub start {
my ($cls, $lei, $src, $dst) = @_;
my $self = bless { src => $src, dst => $dst }, $cls;
$lei->request_umask;
my ($op_c, $ops) = $lei->workers_start($self, 1);
$lei->{wq1} = $self;
$self->wq_io_do('do_mirror', []);
$self->wq_close;
$lei->wait_wq_events($op_c, $ops);
}
sub ipc_atfork_child {
my ($self) = @_;
$self->{lei}->_lei_atfork_child;
$self->SUPER::ipc_atfork_child;
}
sub write_makefile {
my ($dir, $ibx_ver) = @_;
my $f = "$dir/Makefile";
if (sysopen my $fh, $f, O_CREAT|O_EXCL|O_WRONLY) {
print $fh <<EOM or die "print($f) $!";
# This is a v$ibx_ver public-inbox, see the public-inbox-v$ibx_ver-format(5)
# manpage for more information on the format. This Makefile is
# intended as a familiar wrapper for users unfamiliar with
# public-inbox-* commands.
#
# See the respective manpages for public-inbox-fetch(1),
# public-inbox-index(1), etc for more information on
# some of the commands used by this Makefile.
#
# This Makefile will not be modified nor read by public-inbox,
# so you may edit it freely with your own convenience targets
# and notes. public-inbox-fetch will recreate it if removed.
EOM
print $fh <<'EOM' or die "print($f): $!";
# the default target:
help :
@echo Common targets:
@echo ' make fetch - fetch from remote git repostorie(s)'
@echo ' make update - fetch and update index '
@echo
@echo Rarely needed targets:
@echo ' make reindex - may be needed for new features/bugfixes'
@echo ' make compact - rewrite Xapian storage to save space'
@echo ' make index - initial index after clone
fetch :
public-inbox-fetch
update :
@if ! public-inbox-fetch --exit-code; \
then \
c=$$?; \
test $$c -eq 127 && exit 0; \
exit $$c; \
elif test -f msgmap.sqlite3 || test -f public-inbox/msgmap.sqlite3; \
then \
public-inbox-index; \
else \
echo 'public-inbox index not initialized'; \
echo 'see public-inbox-index(1) man page'; \
fi
index :
public-inbox-index
reindex :
public-inbox-index --reindex
compact :
public-inbox-compact
.PHONY : help fetch update index reindex compact
EOM
close $fh or die "close($f): $!";
} else {
die "open($f): $!" unless $!{EEXIST};
}
}
1;
|