mirror of
https://github.com/werkraum-media/events.git
synced 2024-12-23 07:06:09 +01:00
Daniel Siepmann
0fc2668d17
There might be access to TSFE get_cache_timeout() prior rendering events. TYPO3 has a cache for timeout and won't re calculate again. We therefore need to clear the cache if timeout would change. That will lead to inconsistent cache information throughout a single request. But the final cache timeout of the page will be correct. Other parts might be longer, which probably is fine until they relate to the events. Relates: #10500
127 lines
3.5 KiB
PHP
127 lines
3.5 KiB
PHP
<?php
|
|
|
|
declare(strict_types=1);
|
|
|
|
/*
|
|
* Copyright (C) 2023 Daniel Siepmann <coding@daniel-siepmann.de>
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program; if not, write to the Free Software
|
|
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
|
|
* 02110-1301, USA.
|
|
*/
|
|
|
|
namespace Wrm\Events\Caching;
|
|
|
|
use DateTime;
|
|
use DateTimeImmutable;
|
|
use TYPO3\CMS\Core\Cache\CacheManager;
|
|
use TYPO3\CMS\Core\Cache\Frontend\FrontendInterface;
|
|
use TYPO3\CMS\Core\Context\Context;
|
|
use TYPO3\CMS\Core\SingletonInterface;
|
|
use Wrm\Events\Events\Controller\DateListVariables;
|
|
|
|
/**
|
|
* Teaches TYPO3 to set proper timeout for page cache.
|
|
*
|
|
* Takes timings of rendered dates into account.
|
|
* Reduced timeout of page cache in case events (dates) might change before already calculated timeout.
|
|
*/
|
|
class PageCacheTimeout implements SingletonInterface
|
|
{
|
|
/**
|
|
* @var null|DateTimeImmutable
|
|
*/
|
|
private $endOfEvent = null;
|
|
|
|
/**
|
|
* @var FrontendInterface
|
|
*/
|
|
private $runtimeCache;
|
|
|
|
/**
|
|
* @var Context
|
|
*/
|
|
private $context;
|
|
|
|
public function __construct(
|
|
CacheManager $cacheManager,
|
|
Context $context
|
|
) {
|
|
$this->runtimeCache = $cacheManager->getCache('runtime');
|
|
$this->context = $context;
|
|
}
|
|
|
|
public function calculateCacheTimout(
|
|
array $parameters
|
|
): int {
|
|
$typo3Timeout = $parameters['cacheTimeout'];
|
|
$ourTimeout = $this->getTimeout();
|
|
|
|
if ($ourTimeout === null) {
|
|
return $typo3Timeout;
|
|
}
|
|
|
|
return min($typo3Timeout, $ourTimeout);
|
|
}
|
|
|
|
public function trackDates(DateListVariables $event): void
|
|
{
|
|
if ($event->getDemand()->shouldShowFromMidnight()) {
|
|
$this->updateTimeout((new DateTimeImmutable('tomorrow midnight')));
|
|
return;
|
|
}
|
|
|
|
foreach ($event->getDates() as $date) {
|
|
$endDate = $date->getEnd();
|
|
if (!$endDate instanceof DateTime) {
|
|
continue;
|
|
}
|
|
|
|
$this->updateTimeout(DateTimeImmutable::createFromMutable($endDate));
|
|
}
|
|
}
|
|
|
|
private function updateTimeout(DateTimeImmutable $end): void
|
|
{
|
|
$now = new DateTimeImmutable();
|
|
|
|
if (
|
|
$end <= $now
|
|
|| (
|
|
$this->endOfEvent instanceof DateTimeImmutable
|
|
&& $this->endOfEvent >= $end
|
|
)
|
|
) {
|
|
return;
|
|
}
|
|
|
|
$this->runtimeCache->remove('core-tslib_fe-get_cache_timeout');
|
|
$this->endOfEvent = $end;
|
|
}
|
|
|
|
private function getTimeout(): ?int
|
|
{
|
|
if (!$this->endOfEvent instanceof DateTimeImmutable) {
|
|
return null;
|
|
}
|
|
|
|
$executionTime = $this->context->getPropertyFromAspect('date', 'timestamp');
|
|
return ((int) $this->endOfEvent->format('U')) - $executionTime;
|
|
}
|
|
|
|
public static function register(): void
|
|
{
|
|
$GLOBALS['TYPO3_CONF_VARS']['SC_OPTIONS']['tslib/class.tslib_fe.php']['get_cache_timeout']['events'] = self::class . '->calculateCacheTimout';
|
|
}
|
|
}
|