1 # Copyright (C) 2020-2021 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # Detached/external index cross inbox search indexing support
5 # read-write counterpart to PublicInbox::ExtSearch
7 # It's based on the same ideas as public-inbox-v2-format(5) using
8 # over.sqlite3 for dedupe and sharded Xapian. msgmap.sqlite3 is
9 # missing, so there is no Message-ID conflict resolution, meaning
10 # no NNTP support for now.
12 # v2 has a 1:1 mapping of index:inbox or msgmap for NNTP support.
13 # This is intended to be an M:N index:inbox mapping, but it'll likely
14 # be 1:N in common practice (M==1)
16 package PublicInbox::ExtSearchIdx;
19 use parent qw(PublicInbox::ExtSearch PublicInbox::Lock);
20 use Carp qw(croak carp);
21 use Sys::Hostname qw(hostname);
22 use POSIX qw(strftime);
23 use File::Glob qw(bsd_glob GLOB_NOSORT);
24 use PublicInbox::Search;
25 use PublicInbox::SearchIdx qw(prepare_stack is_ancestor is_bad_blob);
26 use PublicInbox::OverIdx;
27 use PublicInbox::MiscIdx;
28 use PublicInbox::MID qw(mids);
29 use PublicInbox::V2Writable;
30 use PublicInbox::InboxWritable;
31 use PublicInbox::ContentHash qw(content_hash);
33 use PublicInbox::DS qw(now add_timer);
34 use DBI qw(:sql_types); # SQL_BLOB
37 my (undef, $dir, $opt) = @_;
38 my $l = $opt->{indexlevel} // 'full';
39 $l !~ $PublicInbox::SearchIdx::INDEXLEVELS and
40 die "invalid indexlevel=$l\n";
41 $l eq 'basic' and die "E: indexlevel=basic not yet supported\n";
43 xpfx => "$dir/ei".PublicInbox::Search::SCHEMA_VERSION,
45 creat => $opt->{creat},
46 ibx_map => {}, # (newsgroup//inboxdir) => $ibx
47 ibx_cfg => [], # by config section order
53 lock_path => "$dir/ei.lock",
55 $self->{shards} = $self->count_shards || nproc_shards($opt->{creat});
56 my $oidx = PublicInbox::OverIdx->new("$self->{xpfx}/over.sqlite3");
57 $self->{-no_fsync} = $oidx->{-no_fsync} = 1 if !$opt->{fsync};
58 $self->{oidx} = $oidx;
63 my ($self, $ibx) = @_;
64 $self->{ibx_map}->{$ibx->eidx_key} //= do {
65 delete $self->{-ibx_ary}; # invalidate cache
66 push @{$self->{ibx_cfg}}, $ibx;
71 sub _ibx_attach { # each_inbox callback
72 my ($ibx, $self) = @_;
73 attach_inbox($self, $ibx);
77 my ($self, $cfg) = @_;
79 $cfg->each_inbox(\&_ibx_attach, $self);
82 sub check_batch_limit ($) {
84 my $self = $req->{self};
85 my $new_smsg = $req->{new_smsg};
86 my $n = $self->{transact_bytes} += $new_smsg->{bytes};
88 # set flag for PublicInbox::V2Writable::index_todo:
89 ${$req->{need_checkpoint}} = 1 if $n >= $self->{batch_bytes};
93 my ($req, $smsg) = @_;
94 my $self = $req->{self};
95 my $docid = $smsg->{num};
96 my $idx = $self->idx_shard($docid);
97 my $oid = $req->{oid};
98 my $xibx = $req->{ibx};
99 my $eml = $req->{eml};
100 my $eidx_key = $xibx->eidx_key;
101 if (my $new_smsg = $req->{new_smsg}) { # 'm' on cross-posted message
102 my $xnum = $req->{xnum};
103 $self->{oidx}->add_xref3($docid, $xnum, $oid, $eidx_key);
104 $idx->ipc_do('add_eidx_info', $docid, $eidx_key, $eml);
105 check_batch_limit($req);
108 my $nr = $self->{oidx}->remove_xref3($docid, $oid, $eidx_key,
111 $self->{oidx}->eidxq_del($docid);
112 $idx->ipc_do('xdb_remove', $docid);
113 } elsif ($rm_eidx_info) {
114 $idx->ipc_do('remove_eidx_info',
115 $docid, $eidx_key, $eml);
116 $self->{oidx}->eidxq_add($docid); # yes, add
121 # called by V2Writable::sync_prepare
122 sub artnum_max { $_[0]->{oidx}->eidx_max }
124 sub index_unseen ($) {
126 my $new_smsg = $req->{new_smsg} or die 'BUG: {new_smsg} unset';
127 my $eml = delete $req->{eml};
128 $new_smsg->populate($eml, $req);
129 my $self = $req->{self};
130 my $docid = $self->{oidx}->adj_counter('eidx_docid', '+');
131 $new_smsg->{num} = $docid;
132 my $idx = $self->idx_shard($docid);
133 $self->{oidx}->add_overview($eml, $new_smsg);
134 my $oid = $new_smsg->{blob};
135 my $ibx = delete $req->{ibx} or die 'BUG: {ibx} unset';
136 $self->{oidx}->add_xref3($docid, $req->{xnum}, $oid, $ibx->eidx_key);
137 $idx->index_eml($eml, $new_smsg, $ibx->eidx_key);
138 check_batch_limit($req);
141 sub do_finalize ($) {
143 if (my $indexed = $req->{indexed}) { # duplicated messages
144 do_xpost($req, $_) for @$indexed;
145 } elsif (exists $req->{new_smsg}) { # totally unseen messsage
148 # `d' message was already unindexed in the v1/v2 inboxes,
149 # so it's too noisy to warn, here.
151 # cur_cmt may be undef for unindex_oid, set by V2Writable::index_todo
152 if (defined(my $cur_cmt = $req->{cur_cmt})) {
153 ${$req->{latest_cmt}} = $cur_cmt;
157 sub do_step ($) { # main iterator for adding messages to the index
159 my $self = $req->{self} // die 'BUG: {self} missing';
161 if (my $next_arg = $req->{next_arg}) {
162 if (my $smsg = $self->{oidx}->next_by_mid(@$next_arg)) {
163 $req->{cur_smsg} = $smsg;
164 $self->git->cat_async($smsg->{blob},
165 \&ck_existing, $req);
166 return; # ck_existing calls do_step
168 delete $req->{next_arg};
170 die "BUG: {cur_smsg} still set" if $req->{cur_smsg};
171 my $mid = shift(@{$req->{mids}}) // last;
173 $req->{next_arg} = [ $mid, \$id, \$prev ];
179 sub _blob_missing ($$) { # called when $smsg->{blob} is bad
180 my ($req, $smsg) = @_;
181 my $self = $req->{self};
182 my $xref3 = $self->{oidx}->get_xref3($smsg->{num});
183 my @keep = grep(!/:$smsg->{blob}\z/, @$xref3);
185 $keep[0] =~ /:([a-f0-9]{40,}+)\z/ or
186 die "BUG: xref $keep[0] has no OID";
188 $self->{oidx}->remove_xref3($smsg->{num}, $smsg->{blob});
189 my $upd = $self->{oidx}->update_blob($smsg, $oidhex);
190 my $saved = $self->{oidx}->get_art($smsg->{num});
192 $self->{oidx}->delete_by_num($smsg->{num});
196 sub ck_existing { # git->cat_async callback
197 my ($bref, $oid, $type, $size, $req) = @_;
198 my $smsg = delete $req->{cur_smsg} or die 'BUG: {cur_smsg} missing';
199 if ($type eq 'missing') {
200 _blob_missing($req, $smsg);
201 } elsif (!is_bad_blob($oid, $type, $size, $smsg->{blob})) {
202 my $self = $req->{self} // die 'BUG: {self} missing';
203 local $self->{current_info} = "$self->{current_info} $oid";
204 my $cur = PublicInbox::Eml->new($bref);
205 if (content_hash($cur) eq $req->{chash}) {
206 push @{$req->{indexed}}, $smsg; # for do_xpost
207 } # else { index_unseen later }
212 # is the messages visible in the inbox currently being indexed?
213 # return the number if so
214 sub cur_ibx_xnum ($$) {
215 my ($req, $bref) = @_;
216 my $ibx = $req->{ibx} or die 'BUG: current {ibx} missing';
218 $req->{eml} = PublicInbox::Eml->new($bref);
219 $req->{chash} = content_hash($req->{eml});
220 $req->{mids} = mids($req->{eml});
221 for my $mid (@{$req->{mids}}) {
223 while (my $x = $ibx->over->next_by_mid($mid, \$id, \$prev)) {
224 return $x->{num} if $x->{blob} eq $req->{oid};
230 sub index_oid { # git->cat_async callback for 'm'
231 my ($bref, $oid, $type, $size, $req) = @_;
232 my $self = $req->{self};
233 local $self->{current_info} = "$self->{current_info} $oid";
234 return if is_bad_blob($oid, $type, $size, $req->{oid});
235 my $new_smsg = $req->{new_smsg} = bless {
237 }, 'PublicInbox::Smsg';
238 $new_smsg->set_bytes($$bref, $size);
239 defined($req->{xnum} = cur_ibx_xnum($req, $bref)) or return;
244 sub unindex_oid { # git->cat_async callback for 'd'
245 my ($bref, $oid, $type, $size, $req) = @_;
246 my $self = $req->{self};
247 local $self->{current_info} = "$self->{current_info} $oid";
248 return if is_bad_blob($oid, $type, $size, $req->{oid});
249 return if defined(cur_ibx_xnum($req, $bref)); # was re-added
253 # overrides V2Writable::last_commits, called by sync_ranges via sync_prepare
255 my ($self, $sync) = @_;
257 my $ekey = $sync->{ibx}->eidx_key;
258 my $uv = $sync->{ibx}->uidvalidity;
259 for my $i (0..$sync->{epoch_max}) {
260 $heads->[$i] = $self->{oidx}->eidx_meta("lc-v2:$ekey//$uv;$i");
265 sub _ibx_index_reject ($) {
267 $ibx->mm // return 'unindexed, no msgmap.sqlite3';
268 $ibx->uidvalidity // return 'no UIDVALIDITY';
269 $ibx->over // return 'unindexed, no over.sqlite3';
273 sub _sync_inbox ($$$) {
274 my ($self, $sync, $ibx) = @_;
275 my $ekey = $ibx->eidx_key;
276 if (defined(my $err = _ibx_index_reject($ibx))) {
277 return "W: skipping $ekey ($err)";
280 $sync->{nr} = \(my $nr = 0);
281 my $v = $ibx->version;
283 $sync->{epoch_max} = $ibx->max_git_epoch // return;
284 sync_prepare($self, $sync); # or return # TODO: once MiscIdx is stable
286 my $uv = $ibx->uidvalidity;
287 my $lc = $self->{oidx}->eidx_meta("lc-v1:$ekey//$uv");
288 my $head = $ibx->mm->last_commit //
289 return "E: $ibx->{inboxdir} is not indexed";
290 my $stk = prepare_stack($sync, $lc ? "$lc..$head" : $head);
291 my $unit = { stack => $stk, git => $ibx->git };
292 push @{$sync->{todo}}, $unit;
294 return "E: $ekey unsupported inbox version (v$v)";
296 for my $unit (@{delete($sync->{todo}) // []}) {
297 last if $sync->{quit};
298 index_todo($self, $sync, $unit);
300 $self->{midx}->index_ibx($ibx) unless $sync->{quit};
301 $ibx->git->cleanup; # done with this inbox, now
305 sub gc_unref_doc ($$$$) {
306 my ($self, $ibx_id, $eidx_key, $docid) = @_;
307 my $dbh = $self->{oidx}->dbh;
309 # for debug/info purposes, oids may no longer be accessible
310 my $sth = $dbh->prepare_cached(<<'', undef, 1);
311 SELECT oidbin FROM xref3 WHERE docid = ? AND ibx_id = ?
313 $sth->execute($docid, $ibx_id);
314 my @oid = map { unpack('H*', $_->[0]) } @{$sth->fetchall_arrayref};
316 $dbh->prepare_cached(<<'')->execute($docid, $ibx_id);
317 DELETE FROM xref3 WHERE docid = ? AND ibx_id = ?
319 my $remain = $self->{oidx}->get_xref3($docid);
320 if (scalar(@$remain)) {
321 $self->{oidx}->eidxq_add($docid); # enqueue for reindex
323 warn "I: unref #$docid $eidx_key $oid\n";
326 warn "I: remove #$docid $eidx_key @oid\n";
327 $self->idx_shard($docid)->ipc_do('xdb_remove', $docid);
332 my ($self, $opt) = @_;
333 $self->{cfg} or die "E: GC requires ->attach_config\n";
335 $self->idx_init($opt); # acquire lock via V2Writable::_idx_init
337 my $dbh = $self->{oidx}->dbh;
338 $dbh->do('PRAGMA case_sensitive_like = ON'); # only place we use LIKE
339 my $x3_doc = $dbh->prepare('SELECT docid FROM xref3 WHERE ibx_id = ?');
340 my $ibx_ck = $dbh->prepare('SELECT ibx_id,eidx_key FROM inboxes');
341 my $lc_i = $dbh->prepare(<<'');
342 SELECT key FROM eidx_meta WHERE key LIKE ? ESCAPE ?
345 while (my ($ibx_id, $eidx_key) = $ibx_ck->fetchrow_array) {
346 next if $self->{ibx_map}->{$eidx_key};
347 $self->{midx}->remove_eidx_key($eidx_key);
348 warn "I: deleting messages for $eidx_key...\n";
349 $x3_doc->execute($ibx_id);
350 while (defined(my $docid = $x3_doc->fetchrow_array)) {
351 gc_unref_doc($self, $ibx_id, $eidx_key, $docid);
353 $dbh->prepare_cached(<<'')->execute($ibx_id);
354 DELETE FROM inboxes WHERE ibx_id = ?
356 # drop last_commit info
358 $pat =~ s/([_%\\])/\\$1/g;
359 $lc_i->execute("lc-%:$pat//%", '\\');
360 while (my ($key) = $lc_i->fetchrow_array) {
361 next if $key !~ m!\Alc-v[1-9]+:\Q$eidx_key\E//!;
362 warn "I: removing $key\n";
363 $dbh->prepare_cached(<<'')->execute($key);
364 DELETE FROM eidx_meta WHERE key = ?
368 warn "I: $eidx_key removed\n";
371 # it's not real unless it's in `over', we use parallelism here,
372 # shards will be reading directly from over, so commit
373 $self->{oidx}->commit_lazy;
374 $self->{oidx}->begin_lazy;
376 for my $idx (@{$self->{idx_shards}}) {
377 warn "I: cleaning up shard #$idx->{shard}\n";
378 $idx->shard_over_check($self->{oidx});
380 my $nr = $dbh->do(<<'');
381 DELETE FROM xref3 WHERE docid NOT IN (SELECT num FROM over)
383 warn "I: eliminated $nr stale xref3 entries\n" if $nr != 0;
389 my ($self, $sync, $smsg) = @_;
390 my $ibx_id = delete($smsg->{ibx_id}) // die '{ibx_id} unset';
391 my $pos = $sync->{id2pos}->{$ibx_id} // die "$ibx_id no pos";
392 $self->{-ibx_ary}->[$pos] // die "BUG: ibx for $smsg->{blob} not mapped"
395 sub _fd_constrained ($) {
397 $self->{-fd_constrained} //= do {
399 if (eval { require BSD::Resource; 1 }) {
400 my $NOFILE = BSD::Resource::RLIMIT_NOFILE();
401 ($soft, undef) = BSD::Resource::getrlimit($NOFILE);
403 chomp($soft = `sh -c 'ulimit -n'`);
405 if (defined($soft)) {
406 my $want = scalar(@{$self->{-ibx_ary}}) + 64; # estimate
407 my $ret = $want > $soft;
410 RLIMIT_NOFILE=$soft insufficient (want: $want), will close DB handles early
415 warn "Unable to determine RLIMIT_NOFILE: $@\n";
421 sub _reindex_finalize ($$$) {
422 my ($req, $smsg, $eml) = @_;
423 my $sync = $req->{sync};
424 my $self = $sync->{self};
425 my $by_chash = delete $req->{by_chash} or die 'BUG: no {by_chash}';
426 my $nr = scalar(keys(%$by_chash)) or die 'BUG: no content hashes';
427 my $orig_smsg = $req->{orig_smsg} // die 'BUG: no {orig_smsg}';
428 my $docid = $smsg->{num} = $orig_smsg->{num};
429 $self->{oidx}->add_overview($eml, $smsg); # may rethread
430 check_batch_limit({ %$sync, new_smsg => $smsg });
431 my $chash0 = $smsg->{chash} // die "BUG: $smsg->{blob} no {chash}";
432 my $stable = delete($by_chash->{$chash0}) //
433 die "BUG: $smsg->{blob} chash missing";
434 my $idx = $self->idx_shard($docid);
435 my $top_smsg = pop @$stable;
436 $top_smsg == $smsg or die 'BUG: top_smsg != smsg';
437 my $ibx = _ibx_for($self, $sync, $smsg);
438 $idx->index_eml($eml, $smsg, $ibx->eidx_key);
439 for my $x (reverse @$stable) {
440 $ibx = _ibx_for($self, $sync, $x);
441 my $hdr = delete $x->{hdr} // die 'BUG: no {hdr}';
442 $idx->ipc_do('add_eidx_info', $docid, $ibx->eidx_key, $hdr);
444 return if $nr == 1; # likely, all good
446 warn "W: #$docid split into $nr due to deduplication change\n";
448 for my $ary (values %$by_chash) {
449 for my $x (reverse @$ary) {
450 warn "removing #$docid xref3 $x->{blob}\n";
451 my $n = $self->{oidx}->remove_xref3($docid, $x->{blob});
452 die "BUG: $x->{blob} invalidated #$docid" if $n == 0;
454 my $x = pop(@$ary) // die "BUG: #$docid {by_chash} empty";
455 $x->{num} = delete($x->{xnum}) // die '{xnum} unset';
456 $ibx = _ibx_for($self, $sync, $x);
457 if (my $over = $ibx->over) {
458 my $e = $over->get_art($x->{num});
459 $e->{blob} eq $x->{blob} or die <<EOF;
460 $x->{blob} != $e->{blob} (${\$ibx->eidx_key}:$e->{num});
462 push @todo, $ibx, $e;
463 $over->dbh_close if _fd_constrained($self);
465 die "$ibx->{inboxdir}: over.sqlite3 unusable: $!\n";
469 while (my ($ibx, $e) = splice(@todo, 0, 2)) {
470 reindex_unseen($self, $sync, $ibx, $e);
474 sub _reindex_oid { # git->cat_async callback
475 my ($bref, $oid, $type, $size, $req) = @_;
476 my $sync = $req->{sync};
477 my $self = $sync->{self};
478 my $orig_smsg = $req->{orig_smsg} // die 'BUG: no {orig_smsg}';
479 my $expect_oid = $req->{xr3r}->[$req->{ix}]->[2];
480 my $docid = $orig_smsg->{num};
481 if (is_bad_blob($oid, $type, $size, $expect_oid)) {
482 my $remain = $self->{oidx}->remove_xref3($docid, $expect_oid);
484 warn "W: #$docid gone or corrupted\n";
485 $self->idx_shard($docid)->ipc_do('xdb_remove', $docid);
486 } elsif (my $next_oid = $req->{xr3r}->[++$req->{ix}]->[2]) {
487 $self->git->cat_async($next_oid, \&_reindex_oid, $req);
489 warn "BUG: #$docid gone (UNEXPECTED)\n";
490 $self->idx_shard($docid)->ipc_do('xdb_remove', $docid);
494 my $ci = $self->{current_info};
495 local $self->{current_info} = "$ci #$docid $oid";
496 my $re_smsg = bless { blob => $oid }, 'PublicInbox::Smsg';
497 $re_smsg->set_bytes($$bref, $size);
498 my $eml = PublicInbox::Eml->new($bref);
499 $re_smsg->populate($eml, { autime => $orig_smsg->{ds},
500 cotime => $orig_smsg->{ts} });
501 my $chash = content_hash($eml);
502 $re_smsg->{chash} = $chash;
503 $re_smsg->{xnum} = $req->{xr3r}->[$req->{ix}]->[1];
504 $re_smsg->{ibx_id} = $req->{xr3r}->[$req->{ix}]->[0];
505 $re_smsg->{hdr} = $eml->header_obj;
506 push @{$req->{by_chash}->{$chash}}, $re_smsg;
507 if (my $next_oid = $req->{xr3r}->[++$req->{ix}]->[2]) {
508 $self->git->cat_async($next_oid, \&_reindex_oid, $req);
509 } else { # last $re_smsg is the highest priority xref3
510 local $self->{current_info} = "$ci #$docid";
511 _reindex_finalize($req, $re_smsg, $eml);
515 sub _reindex_smsg ($$$) {
516 my ($self, $sync, $smsg) = @_;
517 my $docid = $smsg->{num};
518 my $xr3 = $self->{oidx}->get_xref3($docid, 1);
519 if (scalar(@$xr3) == 0) { # _reindex_check_stale should've covered this
521 BUG? #$docid $smsg->{blob} is not referenced by inboxes during reindex
523 $self->{oidx}->delete_by_num($docid);
524 $self->idx_shard($docid)->ipc_do('xdb_remove', $docid);
528 # we sort {xr3r} in the reverse order of ibx_sorted so we can
529 # hit the common case in _reindex_finalize without rereading
530 # from git (or holding multiple messages in memory).
531 my $id2pos = $sync->{id2pos}; # index in ibx_sorted
533 $id2pos->{$b->[0]} <=> $id2pos->{$a->[0]}
535 $b->[1] <=> $a->[1] # break ties with {xnum}
537 @$xr3 = map { [ $_->[0], $_->[1], unpack('H*', $_->[2]) ] } @$xr3;
538 my $req = { orig_smsg => $smsg, sync => $sync, xr3r => $xr3, ix => 0 };
539 $self->git->cat_async($xr3->[$req->{ix}]->[2], \&_reindex_oid, $req);
542 sub checkpoint_due ($) {
544 ${$sync->{need_checkpoint}} || (now() > $sync->{next_check});
548 # I've copied FS images and only changed the hostname before,
549 # so prepend hostname. Use `state' since these a BOFH can change
550 # these while this process is running and we always want to be
551 # able to release locks taken by this process.
552 state $retval = hostname . '-' . do {
553 my $m; # machine-id(5) is systemd
554 if (open(my $fh, '<', '/etc/machine-id')) { $m = <$fh> }
555 # (g)hostid(1) is in GNU coreutils, kern.hostid is most BSDs
556 chomp($m ||= `{ sysctl -n kern.hostid ||
557 hostid || ghostid; } 2>/dev/null`
558 || "no-machine-id-or-hostid-on-$^O");
565 my $expect = delete($self->{-eidxq_locked}) or return;
566 my ($owner_pid, undef) = split(/-/, $expect);
567 return if $owner_pid != $$; # shards may fork
568 my $oidx = $self->{oidx};
570 my $cur = $oidx->eidx_meta('eidxq_lock') // '';
571 if ($cur eq $expect) {
572 $oidx->eidx_meta('eidxq_lock', '');
574 } elsif ($cur ne '') {
575 warn "E: eidxq_lock($expect) stolen by $cur\n";
577 warn "E: eidxq_lock($expect) released by another process\n";
584 eidxq_release($self) and $self->{oidx}->commit_lazy;
587 sub _eidxq_take ($) {
589 my $val = "$$-${\time}-$>-".host_ident;
590 $self->{oidx}->eidx_meta('eidxq_lock', $val);
591 $self->{-eidxq_locked} = $val;
594 sub eidxq_lock_acquire ($) {
596 my $oidx = $self->{oidx};
598 my $cur = $oidx->eidx_meta('eidxq_lock') || return _eidxq_take($self);
599 if (my $locked = $self->{-eidxq_locked}) { # be lazy
600 return $locked if $locked eq $cur;
602 my ($pid, $time, $euid, $ident) = split(/-/, $cur, 4);
603 my $t = strftime('%Y-%m-%d %k:%M:%S', gmtime($time));
604 if ($euid == $> && $ident eq host_ident) {
607 I: PID:$pid (re)indexing Xapian since $t, it will continue our work
611 warn "I: eidxq_lock is stale ($cur), clobbering\n";
612 return _eidxq_take($self);
614 warn "E: kill(0, $pid) failed: $!\n"; # fall-through:
616 my $fn = $oidx->dbh->sqlite_db_filename;
618 W: PID:$pid, UID:$euid on $ident is indexing Xapian since $t
619 W: If this is unexpected, delete `eidxq_lock' from the `eidx_meta' table:
620 W: sqlite3 $fn 'DELETE FROM eidx_meta WHERE key = "eidxq_lock"'
627 $self->{-ibx_ary} //= do {
628 # highest boost first, stable for config-ordering tiebreaker
631 ($b->{boost} // 0) <=> ($a->{boost} // 0)
632 } @{$self->{ibx_cfg}} ];
636 sub eidxq_process ($$) { # for reindexing
637 my ($self, $sync) = @_;
639 return unless eidxq_lock_acquire($self);
640 my $dbh = $self->{oidx}->dbh;
641 my $tot = $dbh->selectrow_array('SELECT COUNT(*) FROM eidxq') or return;
643 local $sync->{-regen_fmt} = "%u/$tot\n";
644 my $pr = $sync->{-opt}->{-progress};
646 my $min = $dbh->selectrow_array('SELECT MIN(docid) FROM eidxq');
647 my $max = $dbh->selectrow_array('SELECT MAX(docid) FROM eidxq');
648 $pr->("Xapian indexing $min..$max (total=$tot)\n");
650 $sync->{id2pos} //= do {
653 $id2pos{$_->{-ibx_id}} = $pos++ for (@{ibx_sorted($self)});
658 $del = $dbh->prepare('DELETE FROM eidxq WHERE docid = ?');
659 $iter = $dbh->prepare('SELECT docid FROM eidxq ORDER BY docid ASC');
661 while (defined(my $docid = $iter->fetchrow_array)) {
662 last if $sync->{quit};
663 if (my $smsg = $self->{oidx}->get_art($docid)) {
664 _reindex_smsg($self, $sync, $smsg);
666 warn "E: #$docid does not exist in over\n";
668 $del->execute($docid);
671 if (checkpoint_due($sync)) {
672 $dbh = $del = $iter = undef;
673 reindex_checkpoint($self, $sync); # release lock
674 $dbh = $self->{oidx}->dbh;
678 $self->git->async_wait_all;
679 $pr->("reindexed ${$sync->{nr}}/$tot\n") if $pr;
682 sub _reindex_unseen { # git->cat_async callback
683 my ($bref, $oid, $type, $size, $req) = @_;
684 return if is_bad_blob($oid, $type, $size, $req->{oid});
685 my $self = $req->{self} // die 'BUG: {self} unset';
686 local $self->{current_info} = "$self->{current_info} $oid";
687 my $new_smsg = bless { blob => $oid, }, 'PublicInbox::Smsg';
688 $new_smsg->set_bytes($$bref, $size);
689 my $eml = $req->{eml} = PublicInbox::Eml->new($bref);
690 $req->{new_smsg} = $new_smsg;
691 $req->{chash} = content_hash($eml);
692 $req->{mids} = mids($eml); # do_step iterates through this
693 do_step($req); # enter the normal indexing flow
696 # --reindex may catch totally unseen messages, this handles them
697 sub reindex_unseen ($$$$) {
698 my ($self, $sync, $ibx, $xsmsg) = @_;
701 autime => $xsmsg->{ds},
702 cotime => $xsmsg->{ts},
703 oid => $xsmsg->{blob},
705 xnum => $xsmsg->{num},
706 # {mids} and {chash} will be filled in at _reindex_unseen
708 warn "I: reindex_unseen ${\$ibx->eidx_key}:$req->{xnum}:$req->{oid}\n";
709 $self->git->cat_async($xsmsg->{blob}, \&_reindex_unseen, $req);
712 sub _reindex_check_unseen ($$$) {
713 my ($self, $sync, $ibx) = @_;
714 my $ibx_id = $ibx->{-ibx_id};
716 my ($beg, $end) = (1, $slice);
718 # first, check if we missed any messages in target $ibx
720 my $pr = $sync->{-opt}->{-progress};
721 my $ekey = $ibx->eidx_key;
722 local $sync->{-regen_fmt} =
723 "$ekey checking unseen %u/".$ibx->over->max."\n";
726 while (scalar(@{$msgs = $ibx->over->query_xover($beg, $end)})) {
727 ${$sync->{nr}} = $beg;
728 $beg = $msgs->[-1]->{num} + 1;
729 $end = $beg + $slice;
730 if (checkpoint_due($sync)) {
731 reindex_checkpoint($self, $sync); # release lock
734 my $inx3 = $self->{oidx}->dbh->prepare_cached(<<'', undef, 1);
735 SELECT DISTINCT(docid) FROM xref3 WHERE
736 ibx_id = ? AND xnum = ? AND oidbin = ?
738 for my $xsmsg (@$msgs) {
739 my $oidbin = pack('H*', $xsmsg->{blob});
740 $inx3->bind_param(1, $ibx_id);
741 $inx3->bind_param(2, $xsmsg->{num});
742 $inx3->bind_param(3, $oidbin, SQL_BLOB);
744 my $docids = $inx3->fetchall_arrayref;
745 # index messages which were totally missed
746 # the first time around ASAP:
747 if (scalar(@$docids) == 0) {
748 reindex_unseen($self, $sync, $ibx, $xsmsg);
749 } else { # already seen, reindex later
750 for my $r (@$docids) {
751 $self->{oidx}->eidxq_add($r->[0]);
754 last if $sync->{quit};
756 last if $sync->{quit};
760 sub _reindex_check_stale ($$$) {
761 my ($self, $sync, $ibx) = @_;
763 my $pr = $sync->{-opt}->{-progress};
765 my $ekey = $ibx->eidx_key;
766 local $sync->{-regen_fmt} =
767 "$ekey check stale/missing %u/".$ibx->over->max."\n";
770 if (checkpoint_due($sync)) {
771 reindex_checkpoint($self, $sync); # release lock
773 # now, check if there's stale xrefs
774 my $iter = $self->{oidx}->dbh->prepare_cached(<<'', undef, 1);
775 SELECT docid,xnum,oidbin FROM xref3 WHERE ibx_id = ? AND docid > ?
776 ORDER BY docid,xnum ASC LIMIT 10000
778 $iter->execute($ibx->{-ibx_id}, $min);
781 while (my ($docid, $xnum, $oidbin) = $iter->fetchrow_array) {
782 return if $sync->{quit};
783 ${$sync->{nr}} = $xnum;
785 $fetching = $min = $docid;
786 my $smsg = $ibx->over->get_art($xnum);
787 my $oidhex = unpack('H*', $oidbin);
791 } elsif ($smsg->{blob} ne $oidhex) {
792 $err = "mismatch (!= $smsg->{blob})";
794 next; # likely, all good
796 # current_info already has eidx_key
797 warn "$xnum:$oidhex (#$docid): $err\n";
798 my $del = $self->{oidx}->dbh->prepare_cached(<<'');
799 DELETE FROM xref3 WHERE ibx_id = ? AND xnum = ? AND oidbin = ?
801 $del->bind_param(1, $ibx->{-ibx_id});
802 $del->bind_param(2, $xnum);
803 $del->bind_param(3, $oidbin, SQL_BLOB);
806 # get_xref3 over-fetches, but this is a rare path:
807 my $xr3 = $self->{oidx}->get_xref3($docid);
808 my $idx = $self->idx_shard($docid);
809 if (scalar(@$xr3) == 0) { # all gone
810 $self->{oidx}->delete_by_num($docid);
811 $self->{oidx}->eidxq_del($docid);
812 $idx->ipc_do('xdb_remove', $docid);
813 } else { # enqueue for reindex of remaining messages
814 $idx->ipc_do('remove_eidx_info',
815 $docid, $ibx->eidx_key);
816 $self->{oidx}->eidxq_add($docid); # yes, add
819 } while (defined $fetching);
822 sub _reindex_inbox ($$$) {
823 my ($self, $sync, $ibx) = @_;
824 my $ekey = $ibx->eidx_key;
825 local $self->{current_info} = $ekey;
826 if (defined(my $err = _ibx_index_reject($ibx))) {
827 warn "W: cannot reindex $ekey ($err)\n";
829 _reindex_check_unseen($self, $sync, $ibx);
830 _reindex_check_stale($self, $sync, $ibx) unless $sync->{quit};
832 delete @$ibx{qw(over mm search git)}; # won't need these for a bit
836 my ($self, $sync) = @_;
838 # acquire eidxq_lock early because full reindex takes forever
839 # and incremental -extindex processes can run during our checkpoints
840 if (!eidxq_lock_acquire($self)) {
841 warn "E: aborting --reindex\n";
844 for my $ibx (@{ibx_sorted($self)}) {
845 _reindex_inbox($self, $sync, $ibx);
846 last if $sync->{quit};
848 $self->git->async_wait_all; # ensure eidxq gets filled completely
849 eidxq_process($self, $sync) unless $sync->{quit};
853 my ($self, $sync, $ibx) = @_;
854 my $err = _sync_inbox($self, $sync, $ibx);
855 delete @$ibx{qw(mm over)};
856 warn $err, "\n" if defined($err);
859 sub dd_smsg { # git->cat_async callback
860 my ($bref, $oid, $type, $size, $dd) = @_;
861 my $smsg = $dd->{smsg} // die 'BUG: dd->{smsg} missing';
862 my $self = $dd->{self} // die 'BUG: {self} missing';
863 my $per_mid = $dd->{per_mid} // die 'BUG: {per_mid} missing';
864 if ($type eq 'missing') {
865 _blob_missing($dd, $smsg);
866 } elsif (!is_bad_blob($oid, $type, $size, $smsg->{blob})) {
867 local $self->{current_info} = "$self->{current_info} $oid";
868 my $chash = content_hash(PublicInbox::Eml->new($bref));
869 push(@{$per_mid->{dd_chash}->{$chash}}, $smsg);
871 return if $per_mid->{last_smsg} != $smsg;
872 while (my ($chash, $ary) = each %{$per_mid->{dd_chash}}) {
873 my $keep = shift @$ary;
874 next if !scalar(@$ary);
875 $per_mid->{sync}->{dedupe_cull} += scalar(@$ary);
877 "# <$keep->{mid}> keeping #$keep->{num}, dropping ",
878 join(', ', map { "#$_->{num}" } @$ary),"\n";
879 next if $per_mid->{sync}->{-opt}->{'dry-run'};
880 my $oidx = $self->{oidx};
881 for my $smsg (@$ary) {
882 my $gone = $smsg->{num};
883 $oidx->merge_xref3($keep->{num}, $gone, $smsg->{blob});
884 $self->idx_shard($gone)->ipc_do('xdb_remove', $gone);
885 $oidx->delete_by_num($gone);
890 sub eidx_dedupe ($$) {
891 my ($self, $sync) = @_;
892 $sync->{dedupe_cull} = 0;
895 return unless eidxq_lock_acquire($self);
898 local $sync->{-regen_fmt} = "dedupe %u/".$self->{oidx}->max."\n";
900 # note: we could write this query more intelligently,
901 # but that causes lock contention with read-only processes
903 $iter = $self->{oidx}->dbh->prepare(<<EOS);
904 SELECT mid,id FROM msgid WHERE id > ? ORDER BY id ASC
906 $iter->execute($min_id);
907 while (my ($mid, $id) = $iter->fetchrow_array) {
908 last if $sync->{quit};
909 $self->{current_info} = "dedupe $mid";
910 ${$sync->{nr}} = $min_id = $id;
912 while (my $x = $self->{oidx}->next_by_mid($mid, \$id, \$prv)) {
915 next if scalar(@smsg) < 2;
917 dd_chash => {}, # chash => [ary of smsgs]
918 last_smsg => $smsg[-1],
922 $candidates += scalar(@smsg) - 1;
923 for my $smsg (@smsg) {
929 $self->git->cat_async($smsg->{blob}, \&dd_smsg, $dd);
931 # need to wait on every single one
932 $self->git->async_wait_all;
934 if (checkpoint_due($sync)) {
936 reindex_checkpoint($self, $sync);
940 my $n = delete $sync->{dedupe_cull};
941 if (my $pr = $sync->{-opt}->{-progress}) {
942 $pr->("culled $n/$candidates candidates ($nr_mid msgids)\n");
947 sub eidx_sync { # main entry point
948 my ($self, $opt) = @_;
950 my $warn_cb = $SIG{__WARN__} || \&CORE::warn;
951 local $self->{current_info} = '';
952 local $SIG{__WARN__} = sub {
953 return if PublicInbox::Eml::warn_ignore(@_);
954 $warn_cb->($self->{current_info}, ': ', @_);
956 $self->idx_init($opt); # acquire lock via V2Writable::_idx_init
957 $self->{oidx}->rethread_prepare($opt);
959 need_checkpoint => \(my $need_checkpoint = 0),
961 next_check => now() + 10,
963 # DO NOT SET {reindex} here, it's incompatible with reused
964 # V2Writable code, reindex is totally different here
965 # compared to v1/v2 inboxes because we have multiple histories
967 -regen_fmt => "%u/?\n",
969 local $SIG{USR1} = sub { $need_checkpoint = 1 };
970 my $quit = PublicInbox::SearchIdx::quit_cb($sync);
971 local $SIG{QUIT} = $quit;
972 local $SIG{INT} = $quit;
973 local $SIG{TERM} = $quit;
974 for my $ibx (@{ibx_sorted($self)}) {
975 $ibx->{-ibx_id} //= $self->{oidx}->ibx_id($ibx->eidx_key);
977 if (delete($opt->{dedupe})) {
978 local $sync->{checkpoint_unlocks} = 1;
979 eidx_dedupe($self, $sync);
981 if (delete($opt->{reindex})) {
982 local $sync->{checkpoint_unlocks} = 1;
983 eidx_reindex($self, $sync);
986 # don't use $_ here, it'll get clobbered by reindex_checkpoint
987 if ($opt->{scan} // 1) {
988 for my $ibx (@{ibx_sorted($self)}) {
989 last if $sync->{quit};
990 sync_inbox($self, $sync, $ibx);
993 $self->{oidx}->rethread_done($opt) unless $sync->{quit};
994 eidxq_process($self, $sync) unless $sync->{quit};
996 eidxq_release($self);
998 $sync; # for eidx_watch
1001 sub update_last_commit { # overrides V2Writable
1002 my ($self, $sync, $stk) = @_;
1003 my $unit = $sync->{unit} // return;
1004 my $latest_cmt = $stk ? $stk->{latest_cmt} : ${$sync->{latest_cmt}};
1005 defined($latest_cmt) or return;
1006 my $ibx = $sync->{ibx} or die 'BUG: {ibx} missing';
1007 my $ekey = $ibx->eidx_key;
1008 my $uv = $ibx->uidvalidity;
1009 my $epoch = $unit->{epoch};
1011 my $v = $ibx->version;
1013 die 'No {epoch} for v2 unit' unless defined $epoch;
1014 $meta_key = "lc-v2:$ekey//$uv;$epoch";
1016 die 'Unexpected {epoch} for v1 unit' if defined $epoch;
1017 $meta_key = "lc-v1:$ekey//$uv";
1019 die "Unsupported inbox version: $v";
1021 my $last = $self->{oidx}->eidx_meta($meta_key);
1022 if (defined $last && is_ancestor($self->git, $last, $latest_cmt)) {
1023 my @cmd = (qw(rev-list --count), "$last..$latest_cmt");
1024 chomp(my $n = $unit->{git}->qx(@cmd));
1025 return if $n ne '' && $n == 0;
1027 $self->{oidx}->eidx_meta($meta_key, $latest_cmt);
1030 sub _idx_init { # with_umask callback
1031 my ($self, $opt) = @_;
1032 PublicInbox::V2Writable::_idx_init($self, $opt); # acquires ei.lock
1033 $self->{midx} = PublicInbox::MiscIdx->new($self);
1036 sub symlink_packs ($$) {
1037 my ($ibx, $pd) = @_;
1039 my $glob = "$ibx->{inboxdir}/git/*.git/objects/pack/*.idx";
1040 for my $idx (bsd_glob($glob, GLOB_NOSORT)) {
1041 my $src = substr($idx, 0, -length('.idx'));
1042 my $dst = $pd . substr($src, rindex($src, '/'));
1043 if (-f "$src.pack" and
1044 symlink("$src.pack", "$dst.pack") and
1045 symlink($idx, "$dst.idx") and
1048 # .promisor, .bitmap, .rev and .keep are optional
1049 # XXX should we symlink .keep here?
1050 for my $s (qw(promisor bitmap rev)) {
1051 symlink("$src.$s", "$dst.$s") if -f "$src.$s";
1053 } elsif (!$!{EEXIST}) {
1054 warn "W: ln -s $src.{pack,idx} => $dst.*: $!\n";
1055 unlink "$dst.pack", "$dst.idx";
1061 sub idx_init { # similar to V2Writable
1062 my ($self, $opt) = @_;
1063 return if $self->{idx_shards};
1065 $self->git->cleanup;
1067 my $ALL = $self->git->{git_dir}; # ALL.git
1069 if ($opt->{-private}) { # LeiStore
1072 umask 077; # don't bother restoring
1073 PublicInbox::Import::init_bare($ALL);
1074 $self->git->qx(qw(config core.sharedRepository 0600));
1077 PublicInbox::Import::init_bare($ALL) unless $old;
1079 my $info_dir = "$ALL/objects/info";
1080 my $alt = "$info_dir/alternates";
1081 my (@old, @new, %seen); # seen: st_dev + st_ino
1083 open(my $fh, '<', $alt) or die "open $alt: $!";
1084 $mode = (stat($fh))[2] & 07777;
1085 while (my $line = <$fh>) {
1086 chomp(my $d = $line);
1088 # expand relative path (/local/ stuff)
1089 substr($d, 0, 3) eq '../' and
1090 $d = "$ALL/objects/$d";
1091 if (my @st = stat($d)) {
1092 next if $seen{"$st[0]\0$st[1]"}++;
1094 warn "W: stat($d) failed (from $alt): $!\n";
1095 next if $opt->{-idx_gc};
1101 # for LeiStore, and possibly some mirror-only state
1102 if (opendir(my $dh, my $local = "$self->{topdir}/local")) {
1103 # highest numbered epoch first
1104 for my $n (sort { $b <=> $a } map { substr($_, 0, -4) + 0 }
1105 grep(/\A[0-9]+\.git\z/, readdir($dh))) {
1106 my $d = "$local/$n.git/objects"; # absolute path
1107 if (my @st = stat($d)) {
1108 next if $seen{"$st[0]\0$st[1]"}++;
1109 # favor relative paths for rename-friendliness
1110 push @new, "../../local/$n.git/objects\n";
1112 warn "W: stat($d) failed: $!\n";
1116 # git-multi-pack-index(1) can speed up "git cat-file" startup slightly
1119 my $pd = "$ALL/objects/pack";
1120 if (!mkdir($pd) && $!{EEXIST} && opendir($dh, $pd)) {
1121 # drop stale symlinks
1122 while (defined(my $dn = readdir($dh))) {
1123 if ($dn =~ /\.(?:idx|pack|promisor|bitmap|rev)\z/) {
1125 unlink($f) if -l $f && !-e $f;
1130 for my $ibx (@{ibx_sorted($self)}) {
1131 # create symlinks for multi-pack-index
1132 $git_midx += symlink_packs($ibx, $pd);
1133 # add new lines to our alternates file
1134 my $line = $ibx->git->{git_dir} . "/objects\n";
1135 chomp(my $d = $line);
1136 if (my @st = stat($d)) {
1137 next if $seen{"$st[0]\0$st[1]"}++;
1139 warn "W: stat($d) failed (from $ibx->{inboxdir}): $!\n";
1140 next if $opt->{-idx_gc};
1147 PublicInbox::V2Writable::write_alternates($info_dir, $mode, $o);
1149 $git_midx and $self->with_umask(sub {
1150 my @cmd = ('multi-pack-index');
1151 push @cmd, '--no-progress' if ($opt->{quiet}//0) > 1;
1152 my $lk = $self->lock_for_scope;
1153 system('git', "--git-dir=$ALL", @cmd, 'write');
1154 # ignore errors, fairly new command, may not exist
1156 $self->parallel_init($self->{indexlevel});
1157 $self->with_umask(\&_idx_init, $self, $opt);
1158 $self->{oidx}->begin_lazy;
1159 $self->{oidx}->eidx_prep;
1160 $self->{midx}->create_xdb if @new;
1163 sub _watch_commit { # PublicInbox::DS::add_timer callback
1165 delete $self->{-commit_timer};
1166 eidxq_process($self, $self->{-watch_sync});
1167 eidxq_release($self);
1168 my $fmt = delete $self->{-watch_sync}->{-regen_fmt};
1169 reindex_checkpoint($self, $self->{-watch_sync});
1170 $self->{-watch_sync}->{-regen_fmt} = $fmt;
1172 # call event_step => done unless commit_timer is armed
1173 PublicInbox::DS::requeue($self);
1176 sub on_inbox_unlock { # called by PublicInbox::InboxIdle
1177 my ($self, $ibx) = @_;
1178 my $opt = $self->{-watch_sync}->{-opt};
1179 my $pr = $opt->{-progress};
1180 my $ekey = $ibx->eidx_key;
1181 local $0 = "sync $ekey";
1182 $pr->("indexing $ekey\n") if $pr;
1183 $self->idx_init($opt);
1184 sync_inbox($self, $self->{-watch_sync}, $ibx);
1185 $self->{-commit_timer} //= add_timer($opt->{'commit-interval'} // 10,
1186 \&_watch_commit, $self);
1189 sub eidx_reload { # -extindex --watch SIGHUP handler
1190 my ($self, $idler) = @_;
1192 my $pr = $self->{-watch_sync}->{-opt}->{-progress};
1193 $pr->('reloading ...') if $pr;
1194 delete $self->{-resync_queue};
1195 delete $self->{-ibx_ary};
1196 $self->{ibx_cfg} = [];
1197 %{$self->{ibx_map}} = ();
1198 delete $self->{-watch_sync}->{id2pos};
1199 my $cfg = PublicInbox::Config->new;
1200 attach_config($self, $cfg);
1201 $idler->refresh($cfg);
1202 $pr->(" done\n") if $pr;
1204 warn "reload not supported without --all\n";
1208 sub eidx_resync_start ($) { # -extindex --watch SIGUSR1 handler
1210 $self->{-resync_queue} //= [ @{ibx_sorted($self)} ];
1211 PublicInbox::DS::requeue($self); # trigger our ->event_step
1214 sub event_step { # PublicInbox::DS::requeue callback
1216 if (my $resync_queue = $self->{-resync_queue}) {
1217 if (my $ibx = shift(@$resync_queue)) {
1218 on_inbox_unlock($self, $ibx);
1219 PublicInbox::DS::requeue($self);
1221 delete $self->{-resync_queue};
1222 _watch_commit($self);
1225 done($self) unless $self->{-commit_timer};
1229 sub eidx_watch { # public-inbox-extindex --watch main loop
1230 my ($self, $opt) = @_;
1232 for my $sig (qw(HUP USR1 TSTP QUIT INT TERM)) {
1233 $SIG{$sig} = sub { warn "SIG$sig ignored while scanning\n" };
1235 require PublicInbox::InboxIdle;
1236 require PublicInbox::DS;
1237 require PublicInbox::Syscall;
1238 require PublicInbox::Sigfd;
1239 my $idler = PublicInbox::InboxIdle->new($self->{cfg});
1240 if (!$self->{cfg}) {
1241 $idler->watch_inbox($_) for (@{ibx_sorted($self)});
1243 $_->subscribe_unlock(__PACKAGE__, $self) for (@{ibx_sorted($self)});
1244 my $pr = $opt->{-progress};
1245 $pr->("performing initial scan ...\n") if $pr;
1246 my $sync = eidx_sync($self, $opt); # initial sync
1247 return if $sync->{quit};
1248 my $oldset = PublicInbox::DS::block_signals();
1249 local $self->{current_info} = '';
1250 my $cb = $SIG{__WARN__} || \&CORE::warn;
1251 local $SIG{__WARN__} = sub {
1252 return if PublicInbox::Eml::warn_ignore(@_);
1253 $cb->($self->{current_info}, ': ', @_);
1256 HUP => sub { eidx_reload($self, $idler) },
1257 USR1 => sub { eidx_resync_start($self) },
1258 TSTP => sub { kill('STOP', $$) },
1260 my $quit = PublicInbox::SearchIdx::quit_cb($sync);
1261 $sig->{QUIT} = $sig->{INT} = $sig->{TERM} = $quit;
1262 my $sigfd = PublicInbox::Sigfd->new($sig,
1263 $PublicInbox::Syscall::SFD_NONBLOCK);
1264 %SIG = (%SIG, %$sig) if !$sigfd;
1265 local $self->{-watch_sync} = $sync; # for ->on_inbox_unlock
1267 # wake up every second to accept signals if we don't
1268 # have signalfd or IO::KQueue:
1269 PublicInbox::DS::sig_setmask($oldset);
1270 PublicInbox::DS->SetLoopTimeout(1000);
1272 PublicInbox::DS->SetPostLoopCallback(sub { !$sync->{quit} });
1273 $pr->("initial scan complete, entering event loop\n") if $pr;
1274 PublicInbox::DS->EventLoop; # calls InboxIdle->event_step
1279 *done = \&PublicInbox::V2Writable::done;
1280 *with_umask = \&PublicInbox::InboxWritable::with_umask;
1281 *parallel_init = \&PublicInbox::V2Writable::parallel_init;
1282 *nproc_shards = \&PublicInbox::V2Writable::nproc_shards;
1283 *sync_prepare = \&PublicInbox::V2Writable::sync_prepare;
1284 *index_todo = \&PublicInbox::V2Writable::index_todo;
1285 *count_shards = \&PublicInbox::V2Writable::count_shards;
1286 *atfork_child = \&PublicInbox::V2Writable::atfork_child;
1287 *idx_shard = \&PublicInbox::V2Writable::idx_shard;
1288 *reindex_checkpoint = \&PublicInbox::V2Writable::reindex_checkpoint;
1289 *checkpoint = \&PublicInbox::V2Writable::checkpoint;