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 package PublicInbox::LeiNoteEvent;
8 use parent qw(PublicInbox::IPC);
11 our $to_flush; # { cfgpath => $lei }
15 if (my $lne = delete $lei->{cfg}->{-lei_note_event}) {
16 $lne->wq_close(1, undef, $lei); # runs _lei_wq_eof;
17 } elsif ($lei->{sto}) { # lms_clear_src calls only:
18 my $wait = $lei->{sto}->ipc_do('done');
22 # we batch up writes and flush every 5s (matching Linux default
23 # writeback behavior) since MUAs can trigger a storm of inotify events
24 sub flush_task { # PublicInbox::DS timer callback
26 my $todo = $to_flush // return;
28 for my $lei (values %$todo) { flush_lei($lei) }
31 # sets a timer to flush
32 sub note_event_arm_done ($) {
34 $flush_timer //= PublicInbox::DS::add_timer(5, \&flush_task);
35 $to_flush->{$lei->{cfg}->{'-f'}} //= $lei;
38 sub eml_event ($$$$) {
39 my ($self, $eml, $kw, $state) = @_;
40 my $sto = $self->{lei}->{sto};
41 my $lse = $self->{lse} //= $sto->search;
42 my $vmd = { kw => $kw };
43 if ($state =~ /\Aimport-(?:rw|ro)\z/) {
44 $sto->ipc_do('set_eml', $eml, $vmd);
45 } elsif ($state =~ /\Aindex-(?:rw|ro)\z/) {
46 my $xoids = $self->{lei}->ale->xoids_for($eml);
47 $sto->ipc_do('index_eml_only', $eml, $vmd, $xoids);
48 } elsif ($state =~ /\Atag-(?:rw|ro)\z/) {
49 my $c = $lse->kw_changed($eml, $kw, my $docids = []);
50 if (scalar @$docids) { # already in lei/store
51 $sto->ipc_do('set_eml_vmd', undef, $vmd, $docids) if $c;
52 } elsif (my $xoids = $self->{lei}->ale->xoids_for($eml)) {
53 # it's in an external, only set kw, here
54 $sto->ipc_do('set_xvmd', $xoids, $eml, $vmd);
55 } # else { totally unknown
57 warn "unknown state: $state (in $self->{lei}->{cfg}->{'-f'})\n";
61 sub maildir_event { # via wq_io_do
62 my ($self, $fn, $kw, $state) = @_;
63 my $eml = PublicInbox::InboxWritable::eml_from_path($fn) // return;
64 eml_event($self, $eml, $kw, $state);
68 my ($lei, $folder, $new_cur, $bn, $fn, @rest) = @_;
69 die "BUG: unexpected: @rest" if @rest;
70 my $cfg = $lei->_lei_cfg or return; # gone (race)
71 my $sto = $lei->_lei_store or return; # gone
72 return flush_lei($lei) if $folder eq 'done'; # special case
73 my $lms = $sto->search->lms or return;
74 my $err = $lms->arg2folder($lei, [ $folder ]);
75 return if $err->{fail};
77 my $state = $cfg->get_1("watch.$folder", 'state') // 'pause';
78 return if $state eq 'pause';
80 $sto->write_prepare($lei);
82 $sto->ipc_do('lms_clear_src', $folder, \$bn);
83 return note_event_arm_done($lei);
85 require PublicInbox::MdirReader;
86 my $self = $cfg->{-lei_note_event} //= do {
87 my $wq = bless {}, __PACKAGE__;
88 # MUAs such as mutt can trigger massive rename() storms so
89 # use all CPU power available:
90 my $jobs = $wq->detect_nproc // 1;
91 my ($op_c, $ops) = $lei->workers_start($wq, $jobs);
92 $lei->wait_wq_events($op_c, $ops);
93 note_event_arm_done($lei);
96 if ($folder =~ /\Amaildir:/i) {
97 my $fl = PublicInbox::MdirReader::maildir_basename_flags($bn)
99 return if index($fl, 'T') >= 0;
100 my $kw = PublicInbox::MdirReader::flags2kw($fl);
101 $self->wq_io_do('maildir_event', [], $fn, $kw, $state);
105 sub ipc_atfork_child {
107 $self->{lei}->_lei_atfork_child(1); # persistent, for a while
108 $self->SUPER::ipc_atfork_child;
112 my ($arg, $pid) = @_;
113 my ($self, $lei) = @$arg;
114 $lei->can('wq_done_wait')->($arg, $pid);
117 sub _lei_wq_eof { # EOF callback for main lei daemon
119 my $lne = delete $lei->{lne} or return $lei->fail;
120 my $wait = $lei->{sto}->ipc_do('done');
121 $lne->wq_wait_old(\&lne_done_wait, $lei);