1 # Copyright (C) 2018 all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
3 package PublicInbox::SearchIdxSkeleton;
6 use base qw(PublicInbox::SearchIdx);
7 use Storable qw(freeze thaw);
10 my ($class, $v2writable) = @_;
11 my $self = $class->SUPER::new($v2writable->{-inbox}, 1, 'skel');
17 pipe($r, $w) or die "pipe failed: $!\n";
18 my ($barrier_wait, $barrier_note);
19 pipe($barrier_wait, $barrier_note) or die "pipe failed: $!\n";
20 binmode $_, ':raw' foreach ($r, $w, $barrier_wait, $barrier_note);
22 defined $pid or die "fork failed: $!\n";
24 $v2writable->atfork_child;
28 eval { skeleton_worker_loop($self, $r, $barrier_note) };
29 die "skeleton worker died: $@\n" if $@;
36 $self->{barrier_wait} = $barrier_wait;
40 # lock on only exists in parent, not in worker
41 $self->{lock_path} = $self->xdir . '/pi-v2-skeleton.lock';
45 sub skeleton_worker_loop {
46 my ($self, $r, $barrier_note) = @_;
47 $barrier_note->autoflush(1);
48 $0 = 'pi-v2-skeleton';
49 my $xdb = $self->_xdb_acquire;
50 $xdb->begin_transaction;
53 while (my $line = $r->getline) {
54 if ($line eq "commit\n") {
55 $xdb->commit_transaction if $txn;
57 } elsif ($line eq "close\n") {
60 } elsif ($line =~ /\Abarrier_init (\d+)\n\z/) {
62 die "barrier in-progress\n" if defined $barrier;
63 $barrier = { map { $_ => 1 } (0..$n) };
64 } elsif ($line =~ /\Abarrier (\d+)\n\z/) {
66 die "no barrier in-progress\n" unless defined $barrier;
67 delete $barrier->{$1} or die "unknown barrier: $part\n";
68 if ((scalar keys %$barrier) == 0) {
70 $xdb->commit_transaction if $txn;
72 print $barrier_note "barrier_done\n" or die
73 "print failed to barrier note: $!";
75 } elsif ($line =~ /\AD ([a-f0-9]{40,}) (.*)\n\z/s) {
76 my ($oid, $mid) = ($1, $2);
77 $xdb ||= $self->_xdb_acquire;
79 $xdb->begin_transaction;
82 $self->remove_by_oid($oid, $mid);
85 my $n = read($r, my $msg, $len) or die "read: $!\n";
86 $n == $len or die "short read: $n != $len\n";
87 $msg = thaw($msg); # should raise on error
88 defined $msg or die "failed to thaw buffer\n";
89 $xdb ||= $self->_xdb_acquire;
91 $xdb->begin_transaction;
94 eval { index_skeleton_real($self, $msg) };
95 warn "failed to index message <$msg->[-1]>: $@\n" if $@;
98 die "xdb not released\n" if $xdb;
99 die "in transaction\n" if $txn;
102 # called by a partition worker
104 my ($self, $values) = @_;
107 my $str = freeze($values);
108 $str = length($str) . "\n" . $str;
110 # multiple processes write to the same pipe, so use flock
111 # We can't avoid this lock for <=PIPE_BUF writes, either,
112 # because those atomic writes can break up >PIPE_BUF ones
114 print $w $str or $err = $!;
117 die "print failed: $err\n" if $err;
121 my ($self, $oid, $mid) = @_;
124 eval { $self->SUPER::remote_remove($oid, $mid) };
130 # values: [ TS, NUM, BYTES, LINES, MID, XPATH, doc_data ]
131 sub index_skeleton_real ($$) {
132 my ($self, $values) = @_;
133 my $doc_data = pop @$values;
134 my $xpath = pop @$values;
135 my $mids = pop @$values;
136 my $ts = $values->[PublicInbox::Search::TS];
137 my $smsg = PublicInbox::SearchMsg->new(undef);
138 my $doc = $smsg->{doc};
139 PublicInbox::SearchIdx::add_values($doc, $values);
140 $doc->set_data($doc_data);
142 $smsg->load_from_data($doc_data);
143 my $num = $values->[PublicInbox::Search::NUM];
144 my @refs = ($smsg->references =~ /<([^>]+)>/g);
145 $self->link_and_save($doc, $mids, \@refs, $num, $xpath);
148 # write to the subprocess
150 my ($self, $nparts) = @_;
154 print $w "barrier_init $nparts\n" or $err = "failed to write: $!\n";
161 my $l = $self->{barrier_wait}->getline;
162 $l eq "barrier_done\n" or die "bad response from barrier_wait: $l\n";