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 }
16 my $lne = delete $lei->{cfg}->{-lei_note_event};
17 $lne->wq_close(1, undef, $lei) if $lne; # runs _lei_wq_eof;
20 # we batch up writes and flush every 5s (matching Linux default
21 # writeback behavior) since MUAs can trigger a storm of inotify events
22 sub flush_task { # PublicInbox::DS timer callback
23 my $todo = $to_flush // return;
25 for my $lei (values %$todo) { flush_lei($lei) }
28 # sets a timer to flush
29 sub note_event_arm_done ($) {
31 PublicInbox::DS::add_uniq_timer('flush_timer', 5, \&flush_task);
32 $to_flush->{$lei->{cfg}->{'-f'}} //= $lei;
35 sub eml_event ($$$$) {
36 my ($self, $eml, $vmd, $state) = @_;
37 my $sto = $self->{lei}->{sto};
38 if ($state =~ /\Aimport-(?:rw|ro)\z/) {
39 $sto->wq_do('set_eml', $eml, $vmd);
40 } elsif ($state =~ /\Aindex-(?:rw|ro)\z/) {
41 my $xoids = $self->{lei}->ale->xoids_for($eml);
42 $sto->wq_do('index_eml_only', $eml, $vmd, $xoids);
43 } elsif ($state =~ /\Atag-(?:rw|ro)\z/) {
46 $self->{lse}->kw_changed($eml, $vmd->{kw}, $docids);
47 } // 1; # too new, assume changed since still to-be-committed.
48 if (scalar @$docids) { # already in lei/store
49 $sto->wq_do('set_eml_vmd', undef, $vmd, $docids) if $c;
50 } elsif (my $xoids = $self->{lei}->ale->xoids_for($eml)) {
51 # it's in an external, only set kw, here
52 $sto->wq_do('set_xvmd', $xoids, $eml, $vmd);
53 } # else { totally unknown: ignore
55 warn "unknown state: $state (in $self->{lei}->{cfg}->{'-f'})\n";
59 sub maildir_event { # via wq_io_do
60 my ($self, $fn, $vmd, $state) = @_;
61 my $eml = PublicInbox::InboxWritable::eml_from_path($fn) // return;
62 eml_event($self, $eml, $vmd, $state);
66 my ($lei, $folder, $new_cur, $bn, $fn, @rest) = @_;
67 die "BUG: unexpected: @rest" if @rest;
68 my $cfg = $lei->_lei_cfg or return; # gone (race)
69 my $sto = $lei->_lei_store or return; # gone
70 return flush_lei($lei) if $folder eq 'done'; # special case
71 my $lms = $lei->lms or return;
72 $lms->lms_write_prepare if $new_cur eq ''; # for ->clear_src below
73 $lei->{opt}->{quiet} = 1;
74 eval { $lms->arg2folder($lei, [ $folder ]) };
76 my $state = $cfg->get_1("watch.$folder.state") // 'tag-rw';
77 return if $state eq 'pause';
78 return $lms->clear_src($folder, \$bn) if $new_cur eq '';
81 $sto->write_prepare($lei);
82 require PublicInbox::MdirReader;
83 my $self = $cfg->{-lei_note_event} //= do {
84 my $wq = bless { lms => $lms }, __PACKAGE__;
85 # MUAs such as mutt can trigger massive rename() storms so
86 # use some CPU, but don't overwhelm slower storage, either
87 my $jobs = $wq->detect_nproc // 1;
88 $jobs = 4 if $jobs > 4; # same default as V2Writable
89 my ($op_c, $ops) = $lei->workers_start($wq, $jobs);
90 $lei->wait_wq_events($op_c, $ops);
91 note_event_arm_done($lei);
94 if ($folder =~ /\Amaildir:/i) {
95 my $fl = PublicInbox::MdirReader::maildir_basename_flags($bn)
97 return if index($fl, 'T') >= 0;
98 my $kw = PublicInbox::MdirReader::flags2kw($fl);
99 my $vmd = { kw => $kw, sync_info => [ $folder, \$bn ] };
100 $self->wq_io_do('maildir_event', [], $fn, $vmd, $state);
104 sub ipc_atfork_child {
106 $self->{lei}->_lei_atfork_child(1); # persistent, for a while
107 $self->{lms}->lms_write_prepare;
108 $self->{lse} = $self->{lei}->{sto}->search;
109 $self->SUPER::ipc_atfork_child;
112 sub _lei_wq_eof { # EOF callback for main lei daemon
114 my $lne = delete $lei->{lne} or return $lei->fail;
115 $lei->sto_done_request;
116 $lne->wq_wait_old($lei->can('wq_done_wait'), $lei);