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<?php |
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|
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if (!defined('ABSPATH')) { |
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exit; |
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} |
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|
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/** |
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* Coordinates stats refresh work through WordPress option locks. |
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*/ |
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class ABJ_404_Solution_StatsRefreshLock { |
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|
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/** @var int Cooldown for distributed refresh locks. */ |
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const REFRESH_LOCK_COOLDOWN_SECONDS = 30; |
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|
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/** @var ABJ_404_Solution_DatabaseCoreInterface */ |
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private $dbCore; |
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|
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/** @param ABJ_404_Solution_DatabaseCoreInterface $dbCore */ |
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public function __construct(ABJ_404_Solution_DatabaseCoreInterface $dbCore) { |
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$this->dbCore = $dbCore; |
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} |
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|
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/** @param string $cacheKey @return bool */ |
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public function acquire(string $cacheKey): bool { |
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if (!function_exists('add_option')) { |
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return true; |
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} |
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|
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$lockKey = $this->getOptionName($cacheKey); |
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if (add_option($lockKey, abj_clock()->now(), '', false)) { |
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return true; |
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} |
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|
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if (!function_exists('get_option')) { |
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return false; |
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} |
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|
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$lockValue = get_option($lockKey, false); |
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if ($lockValue === false || $lockValue === '' || $lockValue === null) { |
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return (bool)add_option($lockKey, abj_clock()->now(), '', false); |
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} |
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|
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$lockTs = is_numeric($lockValue) ? (int)$lockValue : 0; |
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if ($lockTs > 0 && (abj_clock()->now() - $lockTs) > self::REFRESH_LOCK_COOLDOWN_SECONDS) { |
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if (function_exists('delete_option')) { |
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delete_option($lockKey); |
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} |
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return (bool)add_option($lockKey, abj_clock()->now(), '', false); |
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} |
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|
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return false; |
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} |
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|
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/** @param string $cacheKey @return void */ |
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public function release(string $cacheKey): void { |
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if (function_exists('delete_option')) { |
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delete_option($this->getOptionName($cacheKey)); |
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} |
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} |
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|
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/** @param string $cacheKey @return string */ |
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private function getOptionName(string $cacheKey): string { |
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return $this->dbCore->tableNameResolver()->getLowercasePrefix() . 'abj404_view_cache_lock_' . md5((string)$cacheKey); |
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} |
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} |
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|
