1 # Copyright (C) 2015-2020 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 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 use PublicInbox::MsgTime qw(msg_timestamp msg_datestamp);
23 my $X = \%PublicInbox::Search::X;
24 my ($DB_CREATE_OR_OPEN, $DB_OPEN);
26 BATCH_BYTES => defined($ENV{XAPIAN_FLUSH_THRESHOLD}) ?
27 0x7fffffff : 1_000_000,
28 DEBUG => !!$ENV{DEBUG},
31 my $xapianlevels = qr/\A(?:full|medium)\z/;
34 my ($class, $ibx, $creat, $shard) = @_;
35 ref $ibx or die "BUG: expected PublicInbox::Inbox object: $ibx";
36 my $levels = qr/\A(?:full|medium|basic)\z/;
37 my $inboxdir = $ibx->{inboxdir};
38 my $version = $ibx->version;
39 my $indexlevel = 'full';
40 my $altid = $ibx->{altid};
42 require PublicInbox::AltId;
43 $altid = [ map { PublicInbox::AltId->new($ibx, $_); } @$altid ];
45 if ($ibx->{indexlevel}) {
46 if ($ibx->{indexlevel} =~ $levels) {
47 $indexlevel = $ibx->{indexlevel};
49 die("Invalid indexlevel $ibx->{indexlevel}\n");
52 $ibx = PublicInbox::InboxWritable->new($ibx);
54 inboxdir => $inboxdir,
59 indexlevel => $indexlevel,
63 $self->{lock_path} = "$inboxdir/ssoma.lock";
64 my $dir = $self->xdir;
65 $self->{over} = PublicInbox::OverIdx->new("$dir/over.sqlite3");
66 } elsif ($version == 2) {
67 defined $shard or die "shard is required for v2\n";
69 $self->{shard} = $shard;
70 $self->{lock_path} = undef;
72 die "unsupported inbox version=$version\n";
74 $self->{creat} = ($creat || 0) == 1;
78 sub need_xapian ($) { $_[0]->{indexlevel} =~ $xapianlevels }
82 if (need_xapian($self)) {
83 my $xdb = delete $self->{xdb} or croak 'not acquired';
86 $self->lock_release if $self->{creat};
90 sub load_xapian_writable () {
91 return 1 if $X->{WritableDatabase};
92 PublicInbox::Search::load_xapian() or return;
93 my $xap = $PublicInbox::Search::Xap;
94 for (qw(Document TermGenerator WritableDatabase)) {
95 $X->{$_} = $xap.'::'.$_;
97 eval 'require '.$X->{WritableDatabase} or die;
98 *sortable_serialise = $xap.'::sortable_serialise';
99 $DB_CREATE_OR_OPEN = eval($xap.'::DB_CREATE_OR_OPEN()');
100 $DB_OPEN = eval($xap.'::DB_OPEN()');
107 my $dir = $self->xdir;
108 if (need_xapian($self)) {
109 croak 'already acquired' if $self->{xdb};
110 load_xapian_writable();
111 $flag = $self->{creat} ? $DB_CREATE_OR_OPEN : $DB_OPEN;
113 if ($self->{creat}) {
117 # don't create empty Xapian directories if we don't need Xapian
118 my $is_shard = defined($self->{shard});
119 if (!$is_shard || ($is_shard && need_xapian($self))) {
120 File::Path::mkpath($dir);
123 return unless defined $flag;
124 my $xdb = eval { ($X->{WritableDatabase})->new($dir, $flag) };
126 die "Failed opening $dir: ", $@;
132 my ($doc, $col, $num) = @_;
133 $num = sortable_serialise($num);
134 $doc->add_value($col, $num);
137 sub term_generator ($) { # write-only
140 $self->{term_generator} //= do {
141 my $tg = $X->{TermGenerator}->new;
142 $tg->set_stemmer($self->stemmer);
147 sub index_text ($$$$) {
148 my ($self, $text, $wdf_inc, $prefix) = @_;
149 my $tg = term_generator($self); # man Search::Xapian::TermGenerator
151 if ($self->{indexlevel} eq 'full') {
152 $tg->index_text($text, $wdf_inc, $prefix);
153 $tg->increase_termpos;
155 $tg->index_text_without_positions($text, $wdf_inc, $prefix);
159 sub index_users ($$) {
160 my ($self, $smsg) = @_;
162 my $from = $smsg->from;
166 index_text($self, $from, 1, 'A'); # A - author
167 index_text($self, $to, 1, 'XTO') if $to ne '';
168 index_text($self, $cc, 1, 'XCC') if $cc ne '';
171 sub index_diff_inc ($$$$) {
172 my ($self, $text, $pfx, $xnq) = @_;
174 index_text($self, join("\n", @$xnq), 1, 'XNQ');
177 index_text($self, $text, 1, $pfx);
180 sub index_old_diff_fn {
181 my ($self, $seen, $fa, $fb, $xnq) = @_;
183 # no renames or space support for traditional diffs,
184 # find the number of leading common paths to strip:
185 my @fa = split('/', $fa);
186 my @fb = split('/', $fb);
187 while (scalar(@fa) && scalar(@fb)) {
188 $fa = join('/', @fa);
189 $fb = join('/', @fb);
191 unless ($seen->{$fa}++) {
192 index_diff_inc($self, $fa, 'XDFN', $xnq);
202 sub index_diff ($$$) {
203 my ($self, $txt, $doc) = @_;
208 foreach (split(/\n/, $txt)) {
209 if ($in_diff && s/^ //) { # diff context
210 index_diff_inc($self, $_, 'XDFCTX', $xnq);
211 } elsif (/^-- $/) { # email signature begins
213 } elsif (m!^diff --git "?[^/]+/.+ "?[^/]+/.+\z!) {
214 # wait until "---" and "+++" to capture filenames
217 } elsif (m/^diff -(.+) (\S+) (\S+)$/) {
218 my ($opt, $fa, $fb) = ($1, $2, $3);
220 # only support unified:
221 next unless $opt =~ /[uU]/;
222 $in_diff = index_old_diff_fn($self, \%seen, $fa, $fb,
224 } elsif (m!^--- ("?[^/]+/.+)!) {
226 $fn = (split('/', git_unquote($fn), 2))[1];
227 $seen{$fn}++ or index_diff_inc($self, $fn, 'XDFN', $xnq);
229 } elsif (m!^\+\+\+ ("?[^/]+/.+)!) {
231 $fn = (split('/', git_unquote($fn), 2))[1];
232 $seen{$fn}++ or index_diff_inc($self, $fn, 'XDFN', $xnq);
234 } elsif (/^--- (\S+)/) {
237 } elsif (defined $in_diff && /^\+\+\+ (\S+)/) {
238 $in_diff = index_old_diff_fn($self, \%seen, $in_diff,
240 } elsif ($in_diff && s/^\+//) { # diff added
241 index_diff_inc($self, $_, 'XDFB', $xnq);
242 } elsif ($in_diff && s/^-//) { # diff removed
243 index_diff_inc($self, $_, 'XDFA', $xnq);
244 } elsif (m!^index ([a-f0-9]+)\.\.([a-f0-9]+)!) {
245 my ($ba, $bb) = ($1, $2);
246 index_git_blob_id($doc, 'XDFPRE', $ba);
247 index_git_blob_id($doc, 'XDFPOST', $bb);
249 } elsif (/^@@ (?:\S+) (?:\S+) @@\s*$/) {
250 # traditional diff w/o -p
251 } elsif (/^@@ (?:\S+) (?:\S+) @@\s*(\S+.*)$/) {
252 # hunk header context
253 index_diff_inc($self, $1, 'XDFHH', $xnq);
254 # ignore the following lines:
255 } elsif (/^(?:dis)similarity index/ ||
256 /^(?:old|new) mode/ ||
257 /^(?:deleted|new) file mode/ ||
258 /^(?:copy|rename) (?:from|to) / ||
259 /^(?:dis)?similarity index / ||
260 /^\\ No newline at end of file/ ||
261 /^Binary files .* differ/) {
264 # possible to be in diff context, some mail may be
265 # stripped by MUA or even GNU diff(1). "git apply"
266 # treats a bare "\n" as diff context, too
269 warn "non-diff line: $_\n" if DEBUG && $_ ne '';
274 index_text($self, join("\n", @xnq), 1, 'XNQ');
277 sub index_body ($$$) {
278 my ($self, $txt, $doc) = @_;
280 # does it look like a diff?
281 if ($txt =~ /^(?:diff|---|\+\+\+) /ms) {
282 index_diff($self, $txt, $doc);
284 index_text($self, $txt, 1, 'XNQ');
287 index_text($self, $txt, 0, 'XQUOT');
291 sub index_xapian { # msg_iter callback
292 my ($part, $depth, @idx) = @{$_[0]};
293 my ($self, $doc) = @{$_[1]};
294 my $ct = $part->content_type || 'text/plain';
295 my $fn = $part->filename;
296 if (defined $fn && $fn ne '') {
297 index_text($self, $fn, 1, 'XFN');
300 my ($s, undef) = msg_part_text($part, $ct);
301 defined $s or return;
303 # split off quoted and unquoted blocks:
304 my @sections = split(/((?:^>[^\n]*\n)+)/sm, $s);
306 index_body($self, $_, /\A>/ ? 0 : $doc) for @sections;
309 sub add_xapian ($$$$$$) {
310 my ($self, $mime, $num, $oid, $mids, $mid0) = @_;
311 my $smsg = PublicInbox::Smsg->new($mime);
312 my $hdr = $mime->header_obj;
313 $smsg->{ds} = msg_datestamp($hdr, $self->{autime});
314 $smsg->{ts} = msg_timestamp($hdr, $self->{cotime});
315 my $doc = $X->{Document}->new;
316 my $subj = $smsg->subject;
317 add_val($doc, PublicInbox::Search::TS(), $smsg->{ts});
318 my @ds = gmtime($smsg->{ds});
319 my $yyyymmdd = strftime('%Y%m%d', @ds);
320 add_val($doc, PublicInbox::Search::YYYYMMDD(), $yyyymmdd);
321 my $dt = strftime('%Y%m%d%H%M%S', @ds);
322 add_val($doc, PublicInbox::Search::DT(), $dt);
324 my $tg = term_generator($self);
326 $tg->set_document($doc);
327 index_text($self, $subj, 1, 'S') if $subj;
328 index_users($self, $smsg);
330 msg_iter($mime, \&index_xapian, [ $self, $doc ]);
331 foreach my $mid (@$mids) {
332 index_text($self, $mid, 1, 'XM');
334 # because too many Message-IDs are prefixed with
336 if ($mid =~ /\w{12,}/) {
337 my @long = ($mid =~ /(\w{3,}+)/g);
338 index_text($self, join(' ', @long), 1, 'XM');
341 $smsg->{to} = $smsg->{cc} = '';
342 $smsg->{blob} = $oid;
343 $smsg->{mid} = $mid0;
344 PublicInbox::OverIdx::parse_references($smsg, $hdr, $mids);
345 my $data = $smsg->to_doc_data;
346 $doc->set_data($data);
347 if (my $altid = $self->{-altid}) {
348 foreach my $alt (@$altid) {
349 my $pfx = $alt->{xprefix};
350 foreach my $mid (@$mids) {
351 my $id = $alt->mid2alt($mid);
352 next unless defined $id;
353 $doc->add_boolean_term($pfx . $id);
357 $doc->add_boolean_term('Q' . $_) foreach @$mids;
358 $self->{xdb}->replace_document($num, $doc);
361 sub _msgmap_init ($) {
363 die "BUG: _msgmap_init is only for v1\n" if $self->{ibx_ver} != 1;
364 $self->{mm} //= eval {
365 require PublicInbox::Msgmap;
366 PublicInbox::Msgmap->new($self->{inboxdir}, 1);
371 # mime = Email::MIME object
372 my ($self, $mime, $bytes, $num, $oid, $mid0) = @_;
373 my $mids = mids_for_index($mime->header_obj);
374 $mid0 //= $mids->[0]; # v1 compatibility
377 index_mm($self, $mime);
380 if (need_xapian($self)) {
381 add_xapian($self, $mime, $num, $oid, $mids, $mid0);
383 if (my $over = $self->{over}) {
384 $over->add_overview($mime, $bytes, $num, $oid, $mid0,
390 warn "failed to index message <".join('> <',@$mids).">: $@\n";
396 # returns begin and end PostingIterator
398 my ($self, $termval) = @_;
399 my $db = $self->{xdb};
401 ($db->postlist_begin($termval), $db->postlist_end($termval));
406 my ($self, $termval, $cb) = @_;
407 my $batch_size = 1000; # don't let @ids grow too large to avoid OOM
409 my ($head, $tail) = $self->find_doc_ids($termval);
410 return if $head == $tail;
412 for (; $head != $tail && @ids < $batch_size; $head++) {
413 push @ids, $head->get_docid;
419 # v1 only, where $mid is unique
421 my ($self, $mid) = @_;
422 $mid = mid_clean($mid);
424 if (my $over = $self->{over}) {
425 my $nr = eval { $over->remove_oid(undef, $mid) };
427 warn "failed to remove <$mid> from overview: $@\n";
429 warn "<$mid> missing for removal from overview\n";
432 return unless need_xapian($self);
433 my $db = $self->{xdb};
436 batch_do($self, 'Q' . $mid, sub {
438 $db->delete_document($_) for @$ids;
443 warn "failed to remove <$mid> from Xapian: $@\n";
445 warn "<$mid> missing for removal from Xapian\n";
449 # MID is a hint in V2
451 my ($self, $oid, $mid) = @_;
453 $self->{over}->remove_oid($oid, $mid) if $self->{over};
455 return unless need_xapian($self);
456 my $db = $self->{xdb};
458 # XXX careful, we cannot use batch_do here since we conditionally
459 # delete documents based on other factors, so we cannot call
460 # find_doc_ids twice.
461 my ($head, $tail) = $self->find_doc_ids('Q' . $mid);
462 return if $head == $tail;
464 # there is only ONE element in @delete unless we
465 # have bugs in our v2writable deduplication check
467 for (; $head != $tail; $head++) {
468 my $docid = $head->get_docid;
469 my $doc = $db->get_document($docid);
470 my $smsg = PublicInbox::Smsg->wrap($mid);
471 $smsg->load_expand($doc);
472 if ($smsg->{blob} eq $oid) {
473 push(@delete, $docid);
476 $db->delete_document($_) foreach @delete;
480 sub index_git_blob_id {
481 my ($doc, $pfx, $objid) = @_;
483 my $len = length($objid);
484 for (my $len = length($objid); $len >= 7; ) {
485 $doc->add_term($pfx.$objid);
486 $objid = substr($objid, 0, --$len);
491 my ($self, $mime) = @_;
492 my $mid = eval { mid_clean(mid_mime($mime)) };
493 $self->remove_message($mid) if defined $mid;
497 my ($self, $mime) = @_;
498 my $mid = mid_clean(mid_mime($mime));
499 my $mm = $self->{mm};
502 if (defined $self->{regen_down}) {
503 $num = $mm->num_for($mid) and return $num;
505 while (($num = $self->{regen_down}--) > 0) {
506 if ($mm->mid_set($num, $mid) != 0) {
510 } elsif (defined $self->{regen_up}) {
511 $num = $mm->num_for($mid) and return $num;
513 # this is to fixup old bugs due to add-remove-add
514 while (($num = ++$self->{regen_up})) {
515 if ($mm->mid_set($num, $mid) != 0) {
521 $num = $mm->mid_insert($mid) and return $num;
523 # fallback to num_for since filters like RubyLang set the number
528 my ($self, $mime) = @_;
529 $self->{mm}->mid_delete(mid_clean(mid_mime($mime)));
533 my ($self, $mime, $bytes, $blob) = @_;
534 my $num = index_mm($self, $mime);
535 add_message($self, $mime, $bytes, $num, $blob);
539 my ($self, $mime) = @_;
540 unindex_blob($self, $mime);
541 unindex_mm($self, $mime);
545 my ($git, $blob, $sizeref) = @_;
547 my $str = $git->cat_file($blob, $sizeref);
548 # fixup bugs from import:
549 $$str =~ s/\A[\r\n]*From [^\r\n]*\r?\n//s;
550 PublicInbox::MIME->new($str);
555 # called by public-inbox-index
557 my ($self, $opts) = @_;
558 delete $self->{lock_path} if $opts->{-skip_lock};
559 $self->{-inbox}->with_umask(sub { $self->_index_sync($opts) })
562 sub batch_adjust ($$$$$) {
563 my ($max, $bytes, $batch_cb, $latest, $nr) = @_;
567 $batch_cb->($nr, $latest);
573 my ($self, $log, $add_cb, $del_cb, $batch_cb) = @_;
574 my $hex = '[a-f0-9]';
575 my $h40 = $hex .'{40}';
576 my $addmsg = qr!^:000000 100644 \S+ ($h40) A\t${hex}{2}/${hex}{38}$!;
577 my $delmsg = qr!^:100644 000000 ($h40) \S+ D\t${hex}{2}/${hex}{38}$!;
578 my $git = $self->{git};
581 my $max = BATCH_BYTES;
587 while (defined($line = <$log>)) {
588 if ($line =~ /$addmsg/o) {
590 if (delete $D{$blob}) {
591 if (defined $self->{regen_down}) {
592 my $num = $self->{regen_down}--;
593 $self->{mm}->num_highwater($num);
597 my $mime = do_cat_mail($git, $blob, \$bytes) or next;
598 batch_adjust(\$max, $bytes, $batch_cb, $latest, ++$nr);
599 $add_cb->($self, $mime, $bytes, $blob);
600 } elsif ($line =~ /$delmsg/o) {
603 } elsif ($line =~ /^commit ($h40)/o) {
606 } elsif ($line =~ /^author .*? ([0-9]+) [\-\+][0-9]+$/) {
607 $self->{over}->{autime} = $self->{autime} = $1;
608 } elsif ($line =~ /^committer .*? ([0-9]+) [\-\+][0-9]+$/) {
609 $self->{over}->{cotime} = $self->{cotime} = $1;
612 close($log) or die "git log failed: \$?=$?";
614 foreach my $blob (keys %D) {
615 my $mime = do_cat_mail($git, $blob, \$bytes) or next;
616 $del_cb->($self, $mime);
618 $batch_cb->($nr, $latest, $newest);
622 my ($self, $opts, $range) = @_;
623 my $git = $self->{git};
625 if (index($range, '..') < 0) {
626 # don't show annoying git errrors to users who run -index
628 $git->qx(qw(rev-parse -q --verify), "$range^0");
630 open my $fh, '<', '/dev/null' or
631 die "failed to open /dev/null: $!\n";
636 # Count the new files so they can be added newest to oldest
637 # and still have numbers increasing from oldest to newest
639 my $pr = $opts->{-progress};
640 $pr->("counting changes\n\t$range ... ") if $pr;
641 # can't use 'rev-list --count' if we use --diff-filter
642 my $fh = $git->popen(qw(log --pretty=tformat:%h
643 --no-notes --no-color --no-renames
644 --diff-filter=AM), $range);
645 ++$fcount while <$fh>;
646 close $fh or die "git log failed: \$?=$?";
647 my $high = $self->{mm}->num_highwater;
648 $pr->("$fcount\n") if $pr; # continue previous line
649 $self->{ntodo} = $fcount;
651 if (index($range, '..') < 0) {
652 if ($high && $high == $fcount) {
653 # fix up old bugs in full indexes which caused messages to
654 # not appear in Msgmap
655 $self->{regen_up} = $high;
657 # normal regen is for for fresh data
658 $self->{regen_down} = $fcount;
661 # Give oldest messages the smallest numbers
662 $self->{regen_down} = $high + $fcount;
665 $git->popen(qw/log --pretty=raw --no-notes --no-color --no-renames
666 --raw -r --no-abbrev/, $range);
669 # --is-ancestor requires git 1.8.0+
670 sub is_ancestor ($$$) {
671 my ($git, $cur, $tip) = @_;
672 return 0 unless $git->check($cur);
673 my $cmd = [ 'git', "--git-dir=$git->{git_dir}",
674 qw(merge-base --is-ancestor), $cur, $tip ];
675 my $pid = spawn($cmd);
676 waitpid($pid, 0) == $pid or die join(' ', @$cmd) .' did not finish';
680 sub need_update ($$$) {
681 my ($self, $cur, $new) = @_;
682 my $git = $self->{git};
683 return 1 if $cur && !is_ancestor($git, $cur, $new);
684 my $range = $cur eq '' ? $new : "$cur..$new";
685 chomp(my $n = $git->qx(qw(rev-list --count), $range));
686 ($n eq '' || $n > 0);
689 # The last git commit we indexed with Xapian or SQLite (msgmap)
690 # This needs to account for cases where Xapian or SQLite is
691 # out-of-date with respect to the other.
693 my ($self, $mm) = @_;
694 my $lm = $mm->last_commit || '';
696 if (need_xapian($self)) {
697 $lx = $self->{xdb}->get_metadata('last_commit') || '';
701 # Use last_commit from msgmap if it is older or unset
702 if (!$lm || ($lx && $lm && is_ancestor($self->{git}, $lm, $lx))) {
708 sub reindex_from ($$) {
709 my ($reindex, $last_commit) = @_;
710 return $last_commit unless $reindex;
711 ref($reindex) eq 'HASH' ? $reindex->{from} : '';
714 # indexes all unindexed messages (v1 only)
716 my ($self, $opts) = @_;
717 my $tip = $opts->{ref} || 'HEAD';
718 my ($last_commit, $lx, $xlog);
719 my $git = $self->{git};
721 my $pr = $opts->{-progress};
723 my $xdb = $self->begin_txn_lazy;
724 my $mm = _msgmap_init($self);
727 close($xlog) or die "git log failed: \$?=$?";
730 $last_commit = _last_x_commit($self, $mm);
731 $lx = reindex_from($opts->{reindex}, $last_commit);
733 $self->{over}->rollback_lazy;
734 $self->{over}->disconnect;
737 $xdb->cancel_transaction if $xdb;
738 $xdb = _xdb_release($self);
740 # ensure we leak no FDs to "git log" with Xapian <= 1.2
741 my $range = $lx eq '' ? $tip : "$lx..$tip";
742 $xlog = _git_log($self, $opts, $range);
744 $xdb = $self->begin_txn_lazy;
745 } while (_last_x_commit($self, $mm) ne $last_commit);
747 my $dbh = $mm->{dbh} if $mm;
749 my ($nr, $commit, $newest) = @_;
752 my $cur = $mm->last_commit || '';
753 if (need_update($self, $cur, $newest)) {
754 $mm->last_commit($newest);
759 if ($newest && need_xapian($self)) {
760 my $cur = $xdb->get_metadata('last_commit');
761 if (need_update($self, $cur, $newest)) {
762 $xdb->set_metadata('last_commit', $newest);
765 $self->commit_txn_lazy;
767 $xdb = _xdb_release($self);
768 # let another process do some work... <
769 $pr->("indexed $nr/$self->{ntodo}\n") if $pr && $nr;
771 $xdb = $self->begin_txn_lazy;
772 $dbh->begin_work if $dbh;
777 read_log($self, $xlog, *index_both, *unindex_both, $cb);
781 # order matters for unlocking
782 $_[0]->{xdb} = undef;
783 $_[0]->{lockfh} = undef;
786 # remote_* subs are only used by SearchIdxPart
789 if (my $w = $self->{w}) {
790 print $w "commit\n" or die "failed to write commit: $!";
792 $self->commit_txn_lazy;
798 if (my $w = delete $self->{w}) {
799 my $pid = delete $self->{pid} or die "no process to wait on\n";
800 print $w "close\n" or die "failed to write to pid:$pid: $!\n";
801 close $w or die "failed to close pipe for pid:$pid: $!\n";
802 waitpid($pid, 0) == $pid or die "remote process did not finish";
803 $? == 0 or die ref($self)." pid:$pid exited with: $?";
805 die "transaction in progress $self\n" if $self->{txn};
806 $self->_xdb_release if $self->{xdb};
811 my ($self, $oid, $mid) = @_;
812 if (my $w = $self->{w}) {
813 # triggers remove_by_oid in a shard
814 print $w "D $oid $mid\n" or die "failed to write remove $!";
816 $self->begin_txn_lazy;
817 $self->remove_by_oid($oid, $mid);
823 return if $self->{txn};
825 $self->{-inbox}->with_umask(sub {
826 my $xdb = $self->{xdb} || $self->_xdb_acquire;
827 $self->{over}->begin_lazy if $self->{over};
828 $xdb->begin_transaction if $xdb;
834 sub commit_txn_lazy {
836 delete $self->{txn} or return;
837 $self->{-inbox}->with_umask(sub {
838 if (my $xdb = $self->{xdb}) {
840 # store 'indexlevel=medium' in v2 shard=0 and
841 # v1 (only one shard)
842 # This metadata is read by Admin::detect_indexlevel:
843 if (!$self->{shard} # undef or 0, not >0
844 && $self->{indexlevel} eq 'medium') {
845 $xdb->set_metadata('indexlevel', 'medium');
848 $xdb->commit_transaction;
850 $self->{over}->commit_lazy if $self->{over};
856 if (need_xapian($self)) {
857 die "$$ $0 xdb not released\n" if $self->{xdb};
859 die "$$ $0 still in transaction\n" if $self->{txn};