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#
# Multi::Sitemap - The sitemap generator
#
package Multi::Sitemap;
use strict;
use warnings;
use POE;
use XML::Writer;
use PerlIO::gzip;
use POSIX 'strftime';
use Time::HiRes 'gettimeofday', 'tv_interval';
sub spawn {
my $p = shift;
POE::Session->create(
package_states => [
$p => [qw| _start shutdown check_age generate addquery addurl finish |],
],
heap => {
output => $VNDB::ROOT.'/www/sitemap.xml.gz',
max_age => 24*3600, # seconds
check_delay => 3600, # seconds
@_,
}
);
}
sub _start {
$_[KERNEL]->alias_set('sitemap');
$_[KERNEL]->yield('check_age');
$_[KERNEL]->sig(shutdown => 'shutdown');
}
sub shutdown {
$_[KERNEL]->delay('check_age');
$_[KERNEL]->alias_remove('sitemap');
}
sub check_age {
# check the last modified time of the sitemap, and if it's older than max_age, regenerate it
$_[KERNEL]->yield('generate') if !-f $_[HEAP]{output} || (stat $_[HEAP]{output})[9] < time-$_[HEAP]{max_age};
# check sitemap again later
$_[KERNEL]->delay(check_age => $_[HEAP]{check_delay});
}
sub generate {
$_[KERNEL]->call(core => log => '(Re)generating sitemap');
$_[HEAP]{urls} = 0;
$_[HEAP]{start} = [ gettimeofday ];
open($_[HEAP]{io}, '>:gzip', $_[HEAP]{output}) || die $1;
$_[HEAP]{xml} = new XML::Writer(
OUTPUT => $_[HEAP]{io},
ENCODING => 'UTF-8',
DATA_MODE => 1,
DATA_INDENT => 1
);
$_[HEAP]{xml}->xmlDecl();
$_[HEAP]{xml}->startTag('urlset', xmlns => 'http://www.sitemaps.org/schemas/sitemap/0.9');
# /
$_[KERNEL]->call(sitemap => addurl => '', 'daily');
# /d+
/([0-9]+)$/ && $_[KERNEL]->call(sitemap => addurl => 'd'.$1, 'monthly', [stat $_]->[9])
for (glob "$VNDB::ROOT/data/docs/*");
# /v/[browse] & /p/[browse]
$_[KERNEL]->call(sitemap => addurl => $_, 'weekly')
for (map { 'v/'.$_, 'p/'.$_ } 'a'..'z', 0, 'all');
# /v+
$_[KERNEL]->post(pg => query => '
SELECT v.id, c.added
FROM vn v
JOIN vn_rev vr ON vr.id = v.latest
JOIN changes c ON vr.id = c.id
WHERE v.hidden = FALSE
ORDER BY v.id',
undef, 'addquery', [ 'v', 0.7 ]);
# /r+
$_[KERNEL]->post(pg => query => '
SELECT r.id, c.added
FROM releases r
JOIN releases_rev rr ON rr.id = r.latest
JOIN changes c ON c.id = rr.id
WHERE r.hidden = FALSE
ORDER BY r.id',
undef, 'addquery', [ 'r', 0.5 ]);
# /p+
$_[KERNEL]->post(pg => query => '
SELECT p.id, c.added
FROM producers p
JOIN producers_rev pr ON pr.id = p.latest
JOIN changes c ON c.id = pr.id
WHERE p.hidden = FALSE
ORDER BY p.id',
undef, 'addquery', [ 'p', 0.3 ]);
# /g+
$_[KERNEL]->post(pg => query => '
SELECT t.id, t.added
FROM tags t
WHERE state = 2
ORDER BY t.id',
undef, 'addquery', [ 'g', 0.3, 1 ]);
}
sub addquery { # num, db-res, [ type, priority, finish ]
$_[KERNEL]->call(sitemap => addurl => $_[ARG2][0].$_->{id}, 'weekly', $_->{added}, $_[ARG2][1])
for(@{$_[ARG1]});
$_[KERNEL]->yield('finish') if $_[ARG2][2];
}
sub finish {
$_[HEAP]{xml}->endTag('urlset');
$_[HEAP]{xml}->end();
close $_[HEAP]{io};
$_[KERNEL]->call(core => log => 'Wrote %d URLs (%.1f kB gzipped) to the sitemap in %.2f seconds',
$_[HEAP]{urls}, (-s $_[HEAP]{output})/1024, tv_interval($_[HEAP]{start}));
delete @{$_[HEAP]}{qw| xml io start urls |};
}
sub addurl { # loc, changefreq, lastmod, priority
$_[HEAP]{xml}->startTag('url');
$_[HEAP]{xml}->dataElement(loc => $VNDB::S{url}.'/'.$_[ARG0]);
$_[HEAP]{xml}->dataElement(changefreq => $_[ARG1]) if defined $_[ARG1];
$_[HEAP]{xml}->dataElement(lastmod => strftime('%Y-%m-%d', gmtime $_[ARG2])) if defined $_[ARG2];
$_[HEAP]{xml}->dataElement(priority => $_[ARG3]) if defined $_[ARG3];
$_[HEAP]{xml}->endTag('url');
$_[HEAP]{urls}++;
}
1;
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