# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
# internal command for dealing with inotify, kqueue vnodes, etc
+# it is a semi-persistent worker
package PublicInbox::LeiNoteEvent;
use strict;
use v5.10.1;
use parent qw(PublicInbox::IPC);
+use PublicInbox::DS;
+use Errno qw(ENOENT);
-my $flush_timer;
our $to_flush; # { cfgpath => $lei }
-sub flush_lei ($) {
- my ($lei) = @_;
- if (my $lne = delete $lei->{cfg}->{-lei_note_event}) {
- $lne->wq_close(1, undef, $lei); # runs _lei_wq_eof;
- } elsif ($lei->{sto}) { # lms_clear_src calls only:
- my $wait = $lei->{sto}->ipc_do('done');
- }
+sub flush_lei ($;$) {
+ my ($lei, $manual) = @_;
+ my $lne = delete $lei->{cfg}->{-lei_note_event} // return;
+ $lne->{lei_sock} = $lei->{sock} if $manual;
+ $lne->wq_close; # runs _lei_wq_eof;
}
# we batch up writes and flush every 5s (matching Linux default
# writeback behavior) since MUAs can trigger a storm of inotify events
sub flush_task { # PublicInbox::DS timer callback
- undef $flush_timer;
my $todo = $to_flush // return;
$to_flush = undef;
for my $lei (values %$todo) { flush_lei($lei) }
# sets a timer to flush
sub note_event_arm_done ($) {
my ($lei) = @_;
- $flush_timer //= PublicInbox::DS::add_timer(5, \&flush_task);
+ PublicInbox::DS::add_uniq_timer('flush_timer', 5, \&flush_task);
$to_flush->{$lei->{cfg}->{'-f'}} //= $lei;
}
sub eml_event ($$$$) {
- my ($self, $eml, $kw, $state) = @_;
+ my ($self, $eml, $vmd, $state) = @_;
my $sto = $self->{lei}->{sto};
- my $lse = $self->{lse} //= $sto->search;
- my $vmd = { kw => $kw };
if ($state =~ /\Aimport-(?:rw|ro)\z/) {
- $sto->ipc_do('set_eml', $eml, $vmd);
+ $sto->wq_do('set_eml', $eml, $vmd);
} elsif ($state =~ /\Aindex-(?:rw|ro)\z/) {
my $xoids = $self->{lei}->ale->xoids_for($eml);
- $sto->ipc_do('index_eml_only', $eml, $vmd, $xoids);
+ $sto->wq_do('index_eml_only', $eml, $vmd, $xoids);
} elsif ($state =~ /\Atag-(?:rw|ro)\z/) {
- my $c = $lse->kw_changed($eml, $kw, my $docids = []);
+ my $docids = [];
+ my $c = eval {
+ $self->{lse}->kw_changed($eml, $vmd->{kw}, $docids);
+ } // 1; # too new, assume changed since still to-be-committed.
if (scalar @$docids) { # already in lei/store
- $sto->ipc_do('set_eml_vmd', undef, $vmd, $docids) if $c;
+ $sto->wq_do('set_eml_vmd', undef, $vmd, $docids) if $c;
} elsif (my $xoids = $self->{lei}->ale->xoids_for($eml)) {
# it's in an external, only set kw, here
- $sto->ipc_do('set_xvmd', $xoids, $eml, $vmd);
- } # else { totally unknown
+ $sto->wq_do('set_xvmd', $xoids, $eml, $vmd);
+ } # else { totally unknown: ignore
} else {
warn "unknown state: $state (in $self->{lei}->{cfg}->{'-f'})\n";
}
}
sub maildir_event { # via wq_io_do
- my ($self, $fn, $kw, $state) = @_;
- my $eml = PublicInbox::InboxWritable::eml_from_path($fn) // return;
- eml_event($self, $eml, $kw, $state);
+ my ($self, $fn, $vmd, $state) = @_;
+ if (my $eml = PublicInbox::InboxWritable::eml_from_path($fn)) {
+ eml_event($self, $eml, $vmd, $state);
+ } elsif ($! == ENOENT) {
+ $self->{lms}->clear_src(@{$vmd->{sync_info}});
+ } # else: eml_from_path already warns
}
sub lei_note_event {
die "BUG: unexpected: @rest" if @rest;
my $cfg = $lei->_lei_cfg or return; # gone (race)
my $sto = $lei->_lei_store or return; # gone
- return flush_lei($lei) if $folder eq 'done'; # special case
- my $lms = $sto->search->lms or return;
- my $err = $lms->arg2folder($lei, [ $folder ]);
- return if $err->{fail};
- undef $lms;
- my $state = $cfg->get_1("watch.$folder", 'state') // 'pause';
+ return flush_lei($lei, 1) if $folder eq 'done'; # special case
+ my $lms = $lei->lms or return;
+ $lms->lms_write_prepare if $new_cur eq ''; # for ->clear_src below
+ $lei->{opt}->{quiet} = 1;
+ $lms->arg2folder($lei, [ $folder ]);
+ my $state = $cfg->get_1("watch.$folder.state") // 'tag-rw';
return if $state eq 'pause';
+ return $lms->clear_src($folder, \$bn) if $new_cur eq '';
+ $lms->lms_pause;
$lei->ale; # prepare
$sto->write_prepare($lei);
- if ($new_cur eq '') {
- $sto->ipc_do('lms_clear_src', $folder, \$bn);
- return note_event_arm_done($lei);
- }
require PublicInbox::MdirReader;
my $self = $cfg->{-lei_note_event} //= do {
- my $wq = bless {}, __PACKAGE__;
+ my $wq = bless { lms => $lms }, __PACKAGE__;
# MUAs such as mutt can trigger massive rename() storms so
- # use all CPU power available:
+ # use some CPU, but don't overwhelm slower storage, either
my $jobs = $wq->detect_nproc // 1;
+ $jobs = 4 if $jobs > 4; # same default as V2Writable
my ($op_c, $ops) = $lei->workers_start($wq, $jobs);
$lei->wait_wq_events($op_c, $ops);
note_event_arm_done($lei);
// return;
return if index($fl, 'T') >= 0;
my $kw = PublicInbox::MdirReader::flags2kw($fl);
- $self->wq_io_do('maildir_event', [], $fn, $kw, $state);
+ my $vmd = { kw => $kw, sync_info => [ $folder, \$bn ] };
+ $self->wq_do('maildir_event', $fn, $vmd, $state);
} # else: TODO: imap
}
sub ipc_atfork_child {
my ($self) = @_;
$self->{lei}->_lei_atfork_child(1); # persistent, for a while
+ $self->{lms}->lms_write_prepare;
+ $self->{lse} = $self->{lei}->{sto}->search;
$self->SUPER::ipc_atfork_child;
}
-sub lne_done_wait {
- my ($arg, $pid) = @_;
- my ($self, $lei) = @$arg;
- $lei->can('wq_done_wait')->($arg, $pid);
-}
-
sub _lei_wq_eof { # EOF callback for main lei daemon
- my ($lei) = @_;
- my $lne = delete $lei->{lne} or return $lei->fail;
- my $wait = $lei->{sto}->ipc_do('done');
- $lne->wq_wait_old(\&lne_done_wait, $lei);
+ $_[0]->wq_eof('lne');
}
1;