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 $lei->sto_done_request;
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, $vmd, $state) = @_;
40 my $sto = $self->{lei}->{sto};
41 my $lse = $self->{lse} //= $sto->search;
42 if ($state =~ /\Aimport-(?:rw|ro)\z/) {
43 $sto->ipc_do('set_eml', $eml, $vmd);
44 } elsif ($state =~ /\Aindex-(?:rw|ro)\z/) {
45 my $xoids = $self->{lei}->ale->xoids_for($eml);
46 $sto->ipc_do('index_eml_only', $eml, $vmd, $xoids);
47 } elsif ($state =~ /\Atag-(?:rw|ro)\z/) {
48 my $c = $lse->kw_changed($eml, $vmd->{kw}, my $docids = []);
49 if (scalar @$docids) { # already in lei/store
50 $sto->ipc_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->ipc_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) if $folder eq 'done'; # special case
72 my $lms = $sto->search->lms or return;
73 my $err = $lms->arg2folder($lei, [ $folder ]);
74 return if $err->{fail};
76 my $state = $cfg->get_1("watch.$folder", 'state') // 'tag-rw';
77 return if $state eq 'pause';
79 $sto->write_prepare($lei);
81 $sto->ipc_do('lms_clear_src', $folder, \$bn);
82 return note_event_arm_done($lei);
84 require PublicInbox::MdirReader;
85 my $self = $cfg->{-lei_note_event} //= do {
86 my $wq = bless {}, __PACKAGE__;
87 # MUAs such as mutt can trigger massive rename() storms so
88 # use all CPU power available:
89 my $jobs = $wq->detect_nproc // 1;
90 my ($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 $self->SUPER::ipc_atfork_child;
112 my ($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 $lei->sto_done_request;
121 $lne->wq_wait_old(\&lne_done_wait, $lei);