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#!/usr/bin/perl -w
# Copyright (C) 2016-2021 all contributors <meta@public-inbox.org>
# License: AGPL-3.0+ <https://www.gnu.org/licenses/agpl-3.0.txt>
my $help = <<EOF;
usage: public-inbox-watch
See public-inbox-watch(1) man page for full documentation.
EOF
use strict;
use Getopt::Long qw(:config gnu_getopt no_ignore_case auto_abbrev);
use IO::Handle; # ->autoflush
use PublicInbox::Watch;
use PublicInbox::Config;
use PublicInbox::DS;
my $do_scan = 1;
GetOptions('scan!' => \$do_scan, # undocumented, testing only
'help|h' => \(my $show_help)) or do { print STDERR $help; exit 1 };
if ($show_help) { print $help; exit 0 };
my $oldset = PublicInbox::DS::block_signals();
STDOUT->autoflush(1);
STDERR->autoflush(1);
local $0 = $0; # local since this script may be eval-ed
my $watch = PublicInbox::Watch->new(PublicInbox::Config->new);
my $reload = sub {
my $prev = $watch or return; # SIGQUIT issued
$watch->quit;
$watch = PublicInbox::Watch->new(PublicInbox::Config->new);
if ($watch) {
warn("I: reloaded\n");
} else {
warn("E: reloading failed\n");
$watch = $prev;
}
};
if ($watch) {
my $scan = sub {
return if !$watch;
warn "I: scanning\n";
$watch->trigger_scan('full');
};
my $quit = sub {
$watch->quit if $watch;
$watch = undef;
$0 .= ' quitting';
};
my $sig = {
HUP => $reload,
USR1 => $scan,
CHLD => \&PublicInbox::DS::enqueue_reap,
};
$sig->{QUIT} = $sig->{TERM} = $sig->{INT} = $quit;
# --no-scan is only intended for testing atm, undocumented.
PublicInbox::DS::requeue($scan) if $do_scan;
$watch->watch($sig, $oldset) while ($watch);
}
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