1 # Copyright (C) all contributors <meta@public-inbox.org>
2 # License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
4 # internal command for dealing with inotify, kqueue vnodes, etc
5 # it is a semi-persistent worker
6 package PublicInbox::LeiNoteEvent;
9 use parent qw(PublicInbox::IPC);
12 our $to_flush; # { cfgpath => $lei }
15 my ($lei, $manual) = @_;
16 my $lne = delete $lei->{cfg}->{-lei_note_event} // return;
17 $lne->{lei_sock} = $lei->{sock} if $manual;
18 $lne->wq_close; # runs _lei_wq_eof;
21 # we batch up writes and flush every 5s (matching Linux default
22 # writeback behavior) since MUAs can trigger a storm of inotify events
23 sub flush_task { # PublicInbox::DS timer callback
24 my $todo = $to_flush // return;
26 for my $lei (values %$todo) { flush_lei($lei) }
29 # sets a timer to flush
30 sub note_event_arm_done ($) {
32 PublicInbox::DS::add_uniq_timer('flush_timer', 5, \&flush_task);
33 $to_flush->{$lei->{cfg}->{'-f'}} //= $lei;
36 sub eml_event ($$$$) {
37 my ($self, $eml, $vmd, $state) = @_;
38 my $sto = $self->{lei}->{sto};
39 if ($state =~ /\Aimport-(?:rw|ro)\z/) {
40 $sto->wq_do('set_eml', $eml, $vmd);
41 } elsif ($state =~ /\Aindex-(?:rw|ro)\z/) {
42 my $xoids = $self->{lei}->ale->xoids_for($eml);
43 $sto->wq_do('index_eml_only', $eml, $vmd, $xoids);
44 } elsif ($state =~ /\Atag-(?:rw|ro)\z/) {
47 $self->{lse}->kw_changed($eml, $vmd->{kw}, $docids);
48 } // 1; # too new, assume changed since still to-be-committed.
49 if (scalar @$docids) { # already in lei/store
50 $sto->wq_do('set_eml_vmd', undef, $vmd, $docids) if $c;
51 } elsif (my $xoids = $self->{lei}->ale->xoids_for($eml)) {
52 # it's in an external, only set kw, here
53 $sto->wq_do('set_xvmd', $xoids, $eml, $vmd);
54 } # else { totally unknown: ignore
56 warn "unknown state: $state (in $self->{lei}->{cfg}->{'-f'})\n";
60 sub maildir_event { # via wq_io_do
61 my ($self, $fn, $vmd, $state) = @_;
62 my $eml = PublicInbox::InboxWritable::eml_from_path($fn) // return;
63 eml_event($self, $eml, $vmd, $state);
67 my ($lei, $folder, $new_cur, $bn, $fn, @rest) = @_;
68 die "BUG: unexpected: @rest" if @rest;
69 my $cfg = $lei->_lei_cfg or return; # gone (race)
70 my $sto = $lei->_lei_store or return; # gone
71 return flush_lei($lei, 1) if $folder eq 'done'; # special case
72 my $lms = $lei->lms or return;
73 $lms->lms_write_prepare if $new_cur eq ''; # for ->clear_src below
74 $lei->{opt}->{quiet} = 1;
75 eval { $lms->arg2folder($lei, [ $folder ]) };
77 my $state = $cfg->get_1("watch.$folder.state") // 'tag-rw';
78 return if $state eq 'pause';
79 return $lms->clear_src($folder, \$bn) if $new_cur eq '';
82 $sto->write_prepare($lei);
83 require PublicInbox::MdirReader;
84 my $self = $cfg->{-lei_note_event} //= do {
85 my $wq = bless { lms => $lms }, __PACKAGE__;
86 # MUAs such as mutt can trigger massive rename() storms so
87 # use some CPU, but don't overwhelm slower storage, either
88 my $jobs = $wq->detect_nproc // 1;
89 $jobs = 4 if $jobs > 4; # same default as V2Writable
90 my ($op_c, $ops) = $lei->workers_start($wq, $jobs);
91 $lei->wait_wq_events($op_c, $ops);
92 note_event_arm_done($lei);
95 if ($folder =~ /\Amaildir:/i) {
96 my $fl = PublicInbox::MdirReader::maildir_basename_flags($bn)
98 return if index($fl, 'T') >= 0;
99 my $kw = PublicInbox::MdirReader::flags2kw($fl);
100 my $vmd = { kw => $kw, sync_info => [ $folder, \$bn ] };
101 $self->wq_io_do('maildir_event', [], $fn, $vmd, $state);
105 sub ipc_atfork_child {
107 $self->{lei}->_lei_atfork_child(1); # persistent, for a while
108 $self->{lms}->lms_write_prepare;
109 $self->{lse} = $self->{lei}->{sto}->search;
110 $self->SUPER::ipc_atfork_child;
113 sub _lei_wq_eof { # EOF callback for main lei daemon
115 my $lne = delete $lei->{lne} or return $lei->fail;
116 $lei->sto_done_request($lne->{lei_sock});