+++ /dev/null
-# Copyright (C) 2018 all contributors <meta@public-inbox.org>
-# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
-
-# used to interface with a single Xapian shard in V2 repos.
-# See L<public-inbox-v2-format(5)> for more info on how we shard Xapian
-package PublicInbox::SearchIdxPart;
-use strict;
-use warnings;
-use base qw(PublicInbox::SearchIdx);
-
-sub new {
- my ($class, $v2writable, $part) = @_;
- my $self = $class->SUPER::new($v2writable->{-inbox}, 1, $part);
- # create the DB before forking:
- $self->_xdb_acquire;
- $self->_xdb_release;
- $self->spawn_worker($v2writable, $part) if $v2writable->{parallel};
- $self;
-}
-
-sub spawn_worker {
- my ($self, $v2writable, $part) = @_;
- my ($r, $w);
- pipe($r, $w) or die "pipe failed: $!\n";
- binmode $r, ':raw';
- binmode $w, ':raw';
- my $pid = fork;
- defined $pid or die "fork failed: $!\n";
- if ($pid == 0) {
- my $bnote = $v2writable->atfork_child;
- $v2writable = undef;
- close $w or die "failed to close: $!";
-
- # F_SETPIPE_SZ = 1031 on Linux; increasing the pipe size here
- # speeds V2Writable batch imports across 8 cores by nearly 20%
- fcntl($r, 1031, 1048576) if $^O eq 'linux';
-
- eval { partition_worker_loop($self, $r, $part, $bnote) };
- die "worker $part died: $@\n" if $@;
- die "unexpected MM $self->{mm}" if $self->{mm};
- exit;
- }
- $self->{pid} = $pid;
- $self->{w} = $w;
- close $r or die "failed to close: $!";
-}
-
-sub partition_worker_loop ($$$$) {
- my ($self, $r, $part, $bnote) = @_;
- $0 = "pi-v2-shard[$part]";
- my $current_info = '';
- my $warn_cb = $SIG{__WARN__} || sub { print STDERR @_ };
- local $SIG{__WARN__} = sub {
- chomp $current_info;
- $warn_cb->("[$part] $current_info: ", @_);
- };
- $self->begin_txn_lazy;
- while (my $line = $r->getline) {
- $current_info = $line;
- if ($line eq "commit\n") {
- $self->commit_txn_lazy;
- } elsif ($line eq "close\n") {
- $self->_xdb_release;
- } elsif ($line eq "barrier\n") {
- $self->commit_txn_lazy;
- # no need to lock < 512 bytes is atomic under POSIX
- print $bnote "barrier $part\n" or
- die "write failed for barrier $!\n";
- } elsif ($line =~ /\AD ([a-f0-9]{40,}) (.+)\n\z/s) {
- my ($oid, $mid) = ($1, $2);
- $self->begin_txn_lazy;
- $self->remove_by_oid($oid, $mid);
- } else {
- chomp $line;
- my ($len, $artnum, $oid, $mid0) = split(/ /, $line);
- $self->begin_txn_lazy;
- my $n = read($r, my $msg, $len) or die "read: $!\n";
- $n == $len or die "short read: $n != $len\n";
- my $mime = PublicInbox::MIME->new(\$msg);
- $artnum = int($artnum);
- $self->add_message($mime, $n, $artnum, $oid, $mid0);
- }
- }
- $self->worker_done;
-}
-
-# called by V2Writable
-sub index_raw {
- my ($self, $bytes, $msgref, $artnum, $oid, $mid0, $mime) = @_;
- if (my $w = $self->{w}) {
- print $w "$bytes $artnum $oid $mid0\n", $$msgref or die
- "failed to write shard $!\n";
- $w->flush or die "failed to flush: $!\n";
- } else {
- $$msgref = undef;
- $self->begin_txn_lazy;
- $self->add_message($mime, $bytes, $artnum, $oid, $mid0);
- }
-}
-
-sub atfork_child {
- close $_[0]->{w} or die "failed to close write pipe: $!\n";
-}
-
-# called by V2Writable:
-sub remote_barrier {
- my ($self) = @_;
- if (my $w = $self->{w}) {
- print $w "barrier\n" or die "failed to print: $!";
- $w->flush or die "failed to flush: $!";
- } else {
- $self->commit_txn_lazy;
- }
-}
-
-1;