1 # Copyright (C) 2015-2019 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
3 # based on notmuch, but with no concept of folders, files or flags
5 # Indexes mail with Xapian and our (SQLite-based) ::Msgmap for use
6 # with the web and NNTP interfaces. This index maintains thread
7 # relationships for use by PublicInbox::SearchThread.
8 # This writes to the search index.
9 package PublicInbox::SearchIdx;
12 use base qw(PublicInbox::Search PublicInbox::Lock);
13 use PublicInbox::MIME;
14 use PublicInbox::InboxWritable;
15 use PublicInbox::MID qw/mid_clean id_compress mid_mime mids_for_index/;
16 use PublicInbox::MsgIter;
18 use POSIX qw(strftime);
19 use PublicInbox::OverIdx;
20 use PublicInbox::Spawn qw(spawn);
21 use PublicInbox::Git qw(git_unquote);
22 my $X = \%PublicInbox::Search::X;
23 my ($DB_CREATE_OR_OPEN, $DB_OPEN);
25 BATCH_BYTES => defined($ENV{XAPIAN_FLUSH_THRESHOLD}) ?
26 0x7fffffff : 1_000_000,
27 DEBUG => !!$ENV{DEBUG},
30 my $xapianlevels = qr/\A(?:full|medium)\z/;
33 my ($class, $ibx, $creat, $shard) = @_;
34 ref $ibx or die "BUG: expected PublicInbox::Inbox object: $ibx";
35 my $levels = qr/\A(?:full|medium|basic)\z/;
36 my $inboxdir = $ibx->{inboxdir};
37 my $version = $ibx->{version} || 1;
38 my $indexlevel = 'full';
39 my $altid = $ibx->{altid};
41 require PublicInbox::AltId;
42 $altid = [ map { PublicInbox::AltId->new($ibx, $_); } @$altid ];
44 if ($ibx->{indexlevel}) {
45 if ($ibx->{indexlevel} =~ $levels) {
46 $indexlevel = $ibx->{indexlevel};
48 die("Invalid indexlevel $ibx->{indexlevel}\n");
51 $ibx = PublicInbox::InboxWritable->new($ibx);
53 inboxdir => $inboxdir,
58 indexlevel => $indexlevel,
62 $self->{lock_path} = "$inboxdir/ssoma.lock";
63 my $dir = $self->xdir;
64 $self->{over} = PublicInbox::OverIdx->new("$dir/over.sqlite3");
65 } elsif ($version == 2) {
66 defined $shard or die "shard is required for v2\n";
68 $self->{shard} = $shard;
69 $self->{lock_path} = undef;
71 die "unsupported inbox version=$version\n";
73 $self->{creat} = ($creat || 0) == 1;
77 sub need_xapian ($) { $_[0]->{indexlevel} =~ $xapianlevels }
81 if (need_xapian($self)) {
82 my $xdb = delete $self->{xdb} or croak 'not acquired';
85 $self->lock_release if $self->{creat};
89 sub load_xapian_writable () {
90 return 1 if $X->{WritableDatabase};
91 PublicInbox::Search::load_xapian() or return;
92 my $xap = $PublicInbox::Search::Xap;
93 for (qw(Document TermGenerator WritableDatabase)) {
94 $X->{$_} = $xap.'::'.$_;
96 eval 'require '.$X->{WritableDatabase} or die;
97 *sortable_serialise = $xap.'::sortable_serialise';
98 $DB_CREATE_OR_OPEN = eval($xap.'::DB_CREATE_OR_OPEN()');
99 $DB_OPEN = eval($xap.'::DB_OPEN()');
106 my $dir = $self->xdir;
107 if (need_xapian($self)) {
108 croak 'already acquired' if $self->{xdb};
109 load_xapian_writable();
110 $flag = $self->{creat} ? $DB_CREATE_OR_OPEN : $DB_OPEN;
112 if ($self->{creat}) {
116 # don't create empty Xapian directories if we don't need Xapian
117 my $is_shard = defined($self->{shard});
118 if (!$is_shard || ($is_shard && need_xapian($self))) {
119 File::Path::mkpath($dir);
122 return unless defined $flag;
123 my $xdb = eval { ($X->{WritableDatabase})->new($dir, $flag) };
125 die "Failed opening $dir: ", $@;
131 my ($doc, $col, $num) = @_;
132 $num = sortable_serialise($num);
133 $doc->add_value($col, $num);
136 sub index_text ($$$$)
138 my ($self, $field, $n, $text) = @_;
139 my $tg = $self->term_generator;
141 if ($self->{indexlevel} eq 'full') {
142 $tg->index_text($field, $n, $text);
143 $tg->increase_termpos;
145 $tg->index_text_without_positions($field, $n, $text);
149 sub index_users ($$) {
150 my ($self, $smsg) = @_;
152 my $from = $smsg->from;
156 $self->index_text($from, 1, 'A'); # A - author
157 $self->index_text($to, 1, 'XTO') if $to ne '';
158 $self->index_text($cc, 1, 'XCC') if $cc ne '';
161 sub index_diff_inc ($$$$) {
162 my ($self, $text, $pfx, $xnq) = @_;
164 $self->index_text(join("\n", @$xnq), 1, 'XNQ');
167 $self->index_text($text, 1, $pfx);
170 sub index_old_diff_fn {
171 my ($self, $seen, $fa, $fb, $xnq) = @_;
173 # no renames or space support for traditional diffs,
174 # find the number of leading common paths to strip:
175 my @fa = split('/', $fa);
176 my @fb = split('/', $fb);
177 while (scalar(@fa) && scalar(@fb)) {
178 $fa = join('/', @fa);
179 $fb = join('/', @fb);
181 unless ($seen->{$fa}++) {
182 $self->index_diff_inc($fa, 'XDFN', $xnq);
192 sub index_diff ($$$) {
193 my ($self, $lines, $doc) = @_;
199 if ($in_diff && s/^ //) { # diff context
200 $self->index_diff_inc($_, 'XDFCTX', $xnq);
201 } elsif (/^-- $/) { # email signature begins
203 } elsif (m!^diff --git ("?a/.+) ("?b/.+)\z!) {
204 my ($fa, $fb) = ($1, $2);
205 my $fn = (split('/', git_unquote($fa), 2))[1];
206 $seen{$fn}++ or $self->index_diff_inc($fn, 'XDFN', $xnq);
207 $fn = (split('/', git_unquote($fb), 2))[1];
208 $seen{$fn}++ or $self->index_diff_inc($fn, 'XDFN', $xnq);
211 } elsif (m/^diff -(.+) (\S+) (\S+)$/) {
212 my ($opt, $fa, $fb) = ($1, $2, $3);
214 # only support unified:
215 next unless $opt =~ /[uU]/;
216 $in_diff = $self->index_old_diff_fn(\%seen, $fa, $fb,
218 } elsif (m!^--- ("?a/.+)!) {
220 $fn = (split('/', git_unquote($fn), 2))[1];
221 $seen{$fn}++ or $self->index_diff_inc($fn, 'XDFN', $xnq);
223 } elsif (m!^\+\+\+ ("?b/.+)!) {
225 $fn = (split('/', git_unquote($fn), 2))[1];
226 $seen{$fn}++ or $self->index_diff_inc($fn, 'XDFN', $xnq);
228 } elsif (/^--- (\S+)/) {
231 } elsif (defined $in_diff && /^\+\+\+ (\S+)/) {
232 $in_diff = $self->index_old_diff_fn(\%seen, $in_diff, $1,
234 } elsif ($in_diff && s/^\+//) { # diff added
235 $self->index_diff_inc($_, 'XDFB', $xnq);
236 } elsif ($in_diff && s/^-//) { # diff removed
237 $self->index_diff_inc($_, 'XDFA', $xnq);
238 } elsif (m!^index ([a-f0-9]+)\.\.([a-f0-9]+)!) {
239 my ($ba, $bb) = ($1, $2);
240 index_git_blob_id($doc, 'XDFPRE', $ba);
241 index_git_blob_id($doc, 'XDFPOST', $bb);
243 } elsif (/^@@ (?:\S+) (?:\S+) @@\s*$/) {
244 # traditional diff w/o -p
245 } elsif (/^@@ (?:\S+) (?:\S+) @@\s*(\S+.*)$/) {
246 # hunk header context
247 $self->index_diff_inc($1, 'XDFHH', $xnq);
248 # ignore the following lines:
249 } elsif (/^(?:dis)similarity index/ ||
250 /^(?:old|new) mode/ ||
251 /^(?:deleted|new) file mode/ ||
252 /^(?:copy|rename) (?:from|to) / ||
253 /^(?:dis)?similarity index / ||
254 /^\\ No newline at end of file/ ||
255 /^Binary files .* differ/) {
258 # possible to be in diff context, some mail may be
259 # stripped by MUA or even GNU diff(1). "git apply"
260 # treats a bare "\n" as diff context, too
263 warn "non-diff line: $_\n" if DEBUG && $_ ne '';
268 $self->index_text(join("\n", @xnq), 1, 'XNQ');
271 sub index_body ($$$) {
272 my ($self, $lines, $doc) = @_;
273 my $txt = join("\n", @$lines);
275 # does it look like a diff?
276 if ($txt =~ /^(?:diff|---|\+\+\+) /ms) {
278 $self->index_diff($lines, $doc);
280 $self->index_text($txt, 1, 'XNQ');
283 $self->index_text($txt, 0, 'XQUOT');
288 sub add_xapian ($$$$$) {
289 my ($self, $mime, $num, $oid, $mids, $mid0) = @_;
290 my $smsg = PublicInbox::SearchMsg->new($mime);
291 my $doc = $X->{Document}->new;
292 my $subj = $smsg->subject;
293 add_val($doc, PublicInbox::Search::TS(), $smsg->ts);
294 my @ds = gmtime($smsg->ds);
295 my $yyyymmdd = strftime('%Y%m%d', @ds);
296 add_val($doc, PublicInbox::Search::YYYYMMDD(), $yyyymmdd);
297 my $dt = strftime('%Y%m%d%H%M%S', @ds);
298 add_val($doc, PublicInbox::Search::DT(), $dt);
300 my $tg = $self->term_generator;
302 $tg->set_document($doc);
303 $self->index_text($subj, 1, 'S') if $subj;
304 $self->index_users($smsg);
306 msg_iter($mime, sub {
307 my ($part, $depth, @idx) = @{$_[0]};
308 my $ct = $part->content_type || 'text/plain';
309 my $fn = $part->filename;
310 if (defined $fn && $fn ne '') {
311 $self->index_text($fn, 1, 'XFN');
314 my ($s, undef) = msg_part_text($part, $ct);
315 defined $s or return;
318 my @lines = split(/\n/, $s);
319 while (defined(my $l = shift @lines)) {
321 $self->index_body(\@orig, $doc) if @orig;
324 $self->index_body(\@quot, 0) if @quot;
328 $self->index_body(\@quot, 0) if @quot;
329 $self->index_body(\@orig, $doc) if @orig;
332 foreach my $mid (@$mids) {
333 $self->index_text($mid, 1, 'XM');
335 # because too many Message-IDs are prefixed with
337 if ($mid =~ /\w{12,}/) {
338 my @long = ($mid =~ /(\w{3,}+)/g);
339 $self->index_text(join(' ', @long), 1, 'XM');
342 $smsg->{to} = $smsg->{cc} = '';
343 PublicInbox::OverIdx::parse_references($smsg, $mid0, $mids);
344 my $data = $smsg->to_doc_data($oid, $mid0);
345 $doc->set_data($data);
346 if (my $altid = $self->{-altid}) {
347 foreach my $alt (@$altid) {
348 my $pfx = $alt->{xprefix};
349 foreach my $mid (@$mids) {
350 my $id = $alt->mid2alt($mid);
351 next unless defined $id;
352 $doc->add_boolean_term($pfx . $id);
356 $doc->add_boolean_term('Q' . $_) foreach @$mids;
357 $self->{xdb}->replace_document($num, $doc);
361 # mime = Email::MIME object
362 my ($self, $mime, $bytes, $num, $oid, $mid0) = @_;
363 my $mids = mids_for_index($mime->header_obj);
364 $mid0 = $mids->[0] unless defined $mid0; # v1 compatibility
365 unless (defined $num) { # v1
367 $num = index_mm($self, $mime);
370 if (need_xapian($self)) {
371 $self->add_xapian($mime, $num, $oid, $mids, $mid0)
373 if (my $over = $self->{over}) {
374 $over->add_overview($mime, $bytes, $num, $oid, $mid0);
379 warn "failed to index message <".join('> <',@$mids).">: $@\n";
385 # returns begin and end PostingIterator
387 my ($self, $termval) = @_;
388 my $db = $self->{xdb};
390 ($db->postlist_begin($termval), $db->postlist_end($termval));
395 my ($self, $termval, $cb) = @_;
396 my $batch_size = 1000; # don't let @ids grow too large to avoid OOM
398 my ($head, $tail) = $self->find_doc_ids($termval);
399 return if $head == $tail;
401 for (; $head != $tail && @ids < $batch_size; $head++) {
402 push @ids, $head->get_docid;
408 # v1 only, where $mid is unique
410 my ($self, $mid) = @_;
411 $mid = mid_clean($mid);
413 if (my $over = $self->{over}) {
414 my $nr = eval { $over->remove_oid(undef, $mid) };
416 warn "failed to remove <$mid> from overview: $@\n";
418 warn "<$mid> missing for removal from overview\n";
421 return unless need_xapian($self);
422 my $db = $self->{xdb};
425 batch_do($self, 'Q' . $mid, sub {
427 $db->delete_document($_) for @$ids;
432 warn "failed to remove <$mid> from Xapian: $@\n";
434 warn "<$mid> missing for removal from Xapian\n";
438 # MID is a hint in V2
440 my ($self, $oid, $mid) = @_;
442 $self->{over}->remove_oid($oid, $mid) if $self->{over};
444 return unless need_xapian($self);
445 my $db = $self->{xdb};
447 # XXX careful, we cannot use batch_do here since we conditionally
448 # delete documents based on other factors, so we cannot call
449 # find_doc_ids twice.
450 my ($head, $tail) = $self->find_doc_ids('Q' . $mid);
451 return if $head == $tail;
453 # there is only ONE element in @delete unless we
454 # have bugs in our v2writable deduplication check
456 for (; $head != $tail; $head++) {
457 my $docid = $head->get_docid;
458 my $doc = $db->get_document($docid);
459 my $smsg = PublicInbox::SearchMsg->wrap($mid);
460 $smsg->load_expand($doc);
461 if ($smsg->{blob} eq $oid) {
462 push(@delete, $docid);
465 $db->delete_document($_) foreach @delete;
469 sub term_generator { # write-only
472 my $tg = $self->{term_generator};
475 $tg = $X->{TermGenerator}->new;
476 $tg->set_stemmer($self->stemmer);
478 $self->{term_generator} = $tg;
481 sub index_git_blob_id {
482 my ($doc, $pfx, $objid) = @_;
484 my $len = length($objid);
485 for (my $len = length($objid); $len >= 7; ) {
486 $doc->add_term($pfx.$objid);
487 $objid = substr($objid, 0, --$len);
492 my ($self, $mime) = @_;
493 my $mid = eval { mid_clean(mid_mime($mime)) };
494 $self->remove_message($mid) if defined $mid;
498 my ($self, $mime) = @_;
499 my $mid = mid_clean(mid_mime($mime));
500 my $mm = $self->{mm};
503 if (defined $self->{regen_down}) {
504 $num = $mm->num_for($mid) and return $num;
506 while (($num = $self->{regen_down}--) > 0) {
507 if ($mm->mid_set($num, $mid) != 0) {
511 } elsif (defined $self->{regen_up}) {
512 $num = $mm->num_for($mid) and return $num;
514 # this is to fixup old bugs due to add-remove-add
515 while (($num = ++$self->{regen_up})) {
516 if ($mm->mid_set($num, $mid) != 0) {
522 $num = $mm->mid_insert($mid) and return $num;
524 # fallback to num_for since filters like RubyLang set the number
529 my ($self, $mime) = @_;
530 $self->{mm}->mid_delete(mid_clean(mid_mime($mime)));
534 my ($self, $mime, $bytes, $blob) = @_;
535 my $num = index_mm($self, $mime);
536 add_message($self, $mime, $bytes, $num, $blob);
540 my ($self, $mime) = @_;
541 unindex_blob($self, $mime);
542 unindex_mm($self, $mime);
546 my ($git, $blob, $sizeref) = @_;
548 my $str = $git->cat_file($blob, $sizeref);
549 # fixup bugs from import:
550 $$str =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
551 PublicInbox::MIME->new($str);
556 # called by public-inbox-index
558 my ($self, $opts) = @_;
559 delete $self->{lock_path} if $opts->{-skip_lock};
560 $self->{-inbox}->with_umask(sub { $self->_index_sync($opts) })
563 sub batch_adjust ($$$$$) {
564 my ($max, $bytes, $batch_cb, $latest, $nr) = @_;
568 $batch_cb->($nr, $latest);
574 my ($self, $log, $add_cb, $del_cb, $batch_cb) = @_;
575 my $hex = '[a-f0-9]';
576 my $h40 = $hex .'{40}';
577 my $addmsg = qr!^:000000 100644 \S+ ($h40) A\t${hex}{2}/${hex}{38}$!;
578 my $delmsg = qr!^:100644 000000 ($h40) \S+ D\t${hex}{2}/${hex}{38}$!;
579 my $git = $self->{git};
582 my $max = BATCH_BYTES;
588 while (defined($line = <$log>)) {
589 if ($line =~ /$addmsg/o) {
591 if (delete $D{$blob}) {
592 if (defined $self->{regen_down}) {
593 my $num = $self->{regen_down}--;
594 $self->{mm}->num_highwater($num);
598 my $mime = do_cat_mail($git, $blob, \$bytes) or next;
599 batch_adjust(\$max, $bytes, $batch_cb, $latest, ++$nr);
600 $add_cb->($self, $mime, $bytes, $blob);
601 } elsif ($line =~ /$delmsg/o) {
604 } elsif ($line =~ /^commit ($h40)/o) {
609 close($log) or die "git log failed: \$?=$?";
611 foreach my $blob (keys %D) {
612 my $mime = do_cat_mail($git, $blob, \$bytes) or next;
613 $del_cb->($self, $mime);
615 $batch_cb->($nr, $latest, $newest);
620 die "BUG: _msgmap_init is only for v1\n" if $self->{version} != 1;
621 $self->{mm} ||= eval {
622 require PublicInbox::Msgmap;
623 PublicInbox::Msgmap->new($self->{inboxdir}, 1);
628 my ($self, $opts, $range) = @_;
629 my $git = $self->{git};
631 if (index($range, '..') < 0) {
632 # don't show annoying git errrors to users who run -index
634 $git->qx(qw(rev-parse -q --verify), "$range^0");
636 open my $fh, '<', '/dev/null' or
637 die "failed to open /dev/null: $!\n";
642 # Count the new files so they can be added newest to oldest
643 # and still have numbers increasing from oldest to newest
645 my $pr = $opts->{-progress};
646 $pr->("counting changes\n\t$range ... ") if $pr;
647 # can't use 'rev-list --count' if we use --diff-filter
648 my $fh = $git->popen(qw(log --pretty=tformat:%h
649 --no-notes --no-color --no-renames
650 --diff-filter=AM), $range);
651 ++$fcount while <$fh>;
652 close $fh or die "git log failed: \$?=$?";
653 my $high = $self->{mm}->num_highwater;
654 $pr->("$fcount\n") if $pr; # continue previous line
655 $self->{ntodo} = $fcount;
657 if (index($range, '..') < 0) {
658 if ($high && $high == $fcount) {
659 # fix up old bugs in full indexes which caused messages to
660 # not appear in Msgmap
661 $self->{regen_up} = $high;
663 # normal regen is for for fresh data
664 $self->{regen_down} = $fcount;
667 # Give oldest messages the smallest numbers
668 $self->{regen_down} = $high + $fcount;
671 $git->popen(qw/log --no-notes --no-color --no-renames
672 --raw -r --no-abbrev/, $range);
675 # --is-ancestor requires git 1.8.0+
676 sub is_ancestor ($$$) {
677 my ($git, $cur, $tip) = @_;
678 return 0 unless $git->check($cur);
679 my $cmd = [ 'git', "--git-dir=$git->{git_dir}",
680 qw(merge-base --is-ancestor), $cur, $tip ];
681 my $pid = spawn($cmd);
682 defined $pid or die "spawning ".join(' ', @$cmd)." failed: $!";
683 waitpid($pid, 0) == $pid or die join(' ', @$cmd) .' did not finish';
687 sub need_update ($$$) {
688 my ($self, $cur, $new) = @_;
689 my $git = $self->{git};
690 return 1 if $cur && !is_ancestor($git, $cur, $new);
691 my $range = $cur eq '' ? $new : "$cur..$new";
692 chomp(my $n = $git->qx(qw(rev-list --count), $range));
693 ($n eq '' || $n > 0);
696 # The last git commit we indexed with Xapian or SQLite (msgmap)
697 # This needs to account for cases where Xapian or SQLite is
698 # out-of-date with respect to the other.
700 my ($self, $mm) = @_;
701 my $lm = $mm->last_commit || '';
703 if (need_xapian($self)) {
704 $lx = $self->{xdb}->get_metadata('last_commit') || '';
708 # Use last_commit from msgmap if it is older or unset
709 if (!$lm || ($lx && $lm && is_ancestor($self->{git}, $lm, $lx))) {
715 sub reindex_from ($$) {
716 my ($reindex, $last_commit) = @_;
717 return $last_commit unless $reindex;
718 ref($reindex) eq 'HASH' ? $reindex->{from} : '';
721 # indexes all unindexed messages (v1 only)
723 my ($self, $opts) = @_;
724 my $tip = $opts->{ref} || 'HEAD';
725 my ($last_commit, $lx, $xlog);
726 my $git = $self->{git};
728 my $pr = $opts->{-progress};
730 my $xdb = $self->begin_txn_lazy;
731 my $mm = _msgmap_init($self);
734 close($xlog) or die "git log failed: \$?=$?";
737 $last_commit = _last_x_commit($self, $mm);
738 $lx = reindex_from($opts->{reindex}, $last_commit);
740 $self->{over}->rollback_lazy;
741 $self->{over}->disconnect;
744 $xdb->cancel_transaction if $xdb;
745 $xdb = _xdb_release($self);
747 # ensure we leak no FDs to "git log" with Xapian <= 1.2
748 my $range = $lx eq '' ? $tip : "$lx..$tip";
749 $xlog = _git_log($self, $opts, $range);
751 $xdb = $self->begin_txn_lazy;
752 } while (_last_x_commit($self, $mm) ne $last_commit);
754 my $dbh = $mm->{dbh} if $mm;
756 my ($nr, $commit, $newest) = @_;
759 my $cur = $mm->last_commit || '';
760 if (need_update($self, $cur, $newest)) {
761 $mm->last_commit($newest);
766 if ($newest && need_xapian($self)) {
767 my $cur = $xdb->get_metadata('last_commit');
768 if (need_update($self, $cur, $newest)) {
769 $xdb->set_metadata('last_commit', $newest);
772 $self->commit_txn_lazy;
774 $xdb = _xdb_release($self);
775 # let another process do some work... <
776 $pr->("indexed $nr/$self->{ntodo}\n") if $pr && $nr;
778 $xdb = $self->begin_txn_lazy;
779 $dbh->begin_work if $dbh;
784 read_log($self, $xlog, *index_both, *unindex_both, $cb);
788 # order matters for unlocking
789 $_[0]->{xdb} = undef;
790 $_[0]->{lockfh} = undef;
793 # remote_* subs are only used by SearchIdxPart
796 if (my $w = $self->{w}) {
797 print $w "commit\n" or die "failed to write commit: $!";
799 $self->commit_txn_lazy;
805 if (my $w = delete $self->{w}) {
806 my $pid = delete $self->{pid} or die "no process to wait on\n";
807 print $w "close\n" or die "failed to write to pid:$pid: $!\n";
808 close $w or die "failed to close pipe for pid:$pid: $!\n";
809 waitpid($pid, 0) == $pid or die "remote process did not finish";
810 $? == 0 or die ref($self)." pid:$pid exited with: $?";
812 die "transaction in progress $self\n" if $self->{txn};
813 $self->_xdb_release if $self->{xdb};
818 my ($self, $oid, $mid) = @_;
819 if (my $w = $self->{w}) {
820 # triggers remove_by_oid in a shard
821 print $w "D $oid $mid\n" or die "failed to write remove $!";
823 $self->begin_txn_lazy;
824 $self->remove_by_oid($oid, $mid);
830 return if $self->{txn};
832 $self->{-inbox}->with_umask(sub {
833 my $xdb = $self->{xdb} || $self->_xdb_acquire;
834 $self->{over}->begin_lazy if $self->{over};
835 $xdb->begin_transaction if $xdb;
841 sub commit_txn_lazy {
843 delete $self->{txn} or return;
844 $self->{-inbox}->with_umask(sub {
845 if (my $xdb = $self->{xdb}) {
847 # store 'indexlevel=medium' in v2 shard=0 and
848 # v1 (only one shard)
849 # This metadata is read by Admin::detect_indexlevel:
850 if (!$self->{shard} # undef or 0, not >0
851 && $self->{indexlevel} eq 'medium') {
852 $xdb->set_metadata('indexlevel', 'medium');
855 $xdb->commit_transaction;
857 $self->{over}->commit_lazy if $self->{over};
863 if (need_xapian($self)) {
864 die "$$ $0 xdb not released\n" if $self->{xdb};
866 die "$$ $0 still in transaction\n" if $self->{txn};