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<?php |
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/** |
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* vipnytt/RobotsTxtParser |
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* |
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* @link https://github.com/VIPnytt/RobotsTxtParser |
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* @license https://github.com/VIPnytt/RobotsTxtParser/blob/master/LICENSE The MIT License (MIT) |
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*/ |
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namespace vipnytt\RobotsTxtParser\Client\Cache\MySQL; |
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use vipnytt\RobotsTxtParser\Client\Cache\BaseCore; |
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use vipnytt\RobotsTxtParser\Exceptions; |
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use vipnytt\RobotsTxtParser\RobotsTxtInterface; |
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use vipnytt\RobotsTxtParser\TxtClient; |
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use vipnytt\RobotsTxtParser\UriClient; |
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/** |
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* Class Base |
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* |
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* @see https://vipnytt.github.io/RobotsTxtParser/methods/Cache.html for documentation |
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* @package vipnytt\RobotsTxtParser\Handler\Cache\MySQL |
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*/ |
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class Base extends BaseCore implements RobotsTxtInterface |
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{ |
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/** |
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* Debug - Get raw data |
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* |
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* @return array |
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*/ |
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public function debug() |
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{ |
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$query = $this->pdo->prepare(<<<SQL |
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SELECT * |
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FROM robotstxt__cache1 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->execute(); |
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return $query->rowCount() > 0 ? $query->fetch(\PDO::FETCH_ASSOC) : []; |
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} |
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/** |
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* Parser client |
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* |
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* @return TxtClient |
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* @throws Exceptions\OutOfSyncException |
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* @throws Exceptions\DatabaseException |
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*/ |
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public function client() |
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{ |
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$query = $this->pdo->prepare(<<<SQL |
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SELECT |
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content, |
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statusCode, |
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nextUpdate, |
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effective, |
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worker, |
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UNIX_TIMESTAMP() |
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FROM robotstxt__cache1 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->execute(); |
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if ($query->rowCount() > 0) { |
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$row = $query->fetch(\PDO::FETCH_ASSOC); |
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$this->clockSyncCheck($row['UNIX_TIMESTAMP()'], self::OUT_OF_SYNC_TIME_LIMIT); |
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if ($row['nextUpdate'] >= $row['UNIX_TIMESTAMP()']) { |
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$this->markAsActive($row['worker']); |
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return new TxtClient($this->base, $row['statusCode'], $row['content'], self::ENCODING, $row['effective'], $this->byteLimit); |
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} |
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} |
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$query = $this->pdo->prepare(<<<SQL |
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UPDATE robotstxt__cache1 |
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SET worker = 0 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->execute(); |
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return $this->refresh(); |
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} |
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/** |
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* Mark robots.txt as active |
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* |
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* @param int|null $workerID |
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* @return bool |
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*/ |
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private function markAsActive($workerID = 0) |
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{ |
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if ($workerID == 0) { |
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$query = $this->pdo->prepare(<<<SQL |
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UPDATE robotstxt__cache1 |
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SET worker = NULL |
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WHERE base = :base AND worker = 0; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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return $query->execute(); |
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} |
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return true; |
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} |
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/** |
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* Update the robots.txt |
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* |
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* @return UriClient |
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* @throws Exceptions\DatabaseException |
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*/ |
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public function refresh() |
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{ |
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$client = new UriClient($this->base, $this->curlOptions, $this->byteLimit); |
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$effective = $client->getEffectiveUri(); |
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if ($effective == $this->base) { |
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$effective = null; |
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} |
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$statusCode = $client->getStatusCode(); |
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$nextUpdate = $client->nextUpdate(); |
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if (strpos($this->base, 'http') === 0 && |
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( |
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$statusCode === null || |
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( |
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$statusCode >= 500 && |
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$statusCode < 600 |
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) |
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) && |
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$this->displacePush($nextUpdate) |
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) { |
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return $client; |
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} |
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$validUntil = $client->validUntil(); |
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$content = $client->render()->compressed(self::RENDER_LINE_SEPARATOR); |
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$query = $this->pdo->prepare(<<<SQL |
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INSERT INTO robotstxt__cache1 (base, content, statusCode, validUntil, nextUpdate, effective) |
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VALUES (:base, :content, :statusCode, :validUntil, :nextUpdate, :effective) |
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ON DUPLICATE KEY UPDATE content = :content, statusCode = :statusCode, validUntil = :validUntil, |
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nextUpdate = :nextUpdate, effective = :effective, worker = 0; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->bindValue('content', $content, \PDO::PARAM_STR); |
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$query->bindValue('statusCode', $statusCode, \PDO::PARAM_INT | \PDO::PARAM_NULL); |
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$query->bindValue('validUntil', $validUntil, \PDO::PARAM_INT); |
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$query->bindValue('nextUpdate', $nextUpdate, \PDO::PARAM_INT); |
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$query->bindValue('effective', $effective, \PDO::PARAM_STR | \PDO::PARAM_NULL); |
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$query->execute(); |
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return $client; |
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} |
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/** |
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* Displace push timestamp |
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* |
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* @param int $nextUpdate |
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* @return bool |
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* @throws Exceptions\OutOfSyncException |
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*/ |
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private function displacePush($nextUpdate) |
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{ |
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$query = $this->pdo->prepare(<<<SQL |
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SELECT |
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validUntil, |
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UNIX_TIMESTAMP() |
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FROM robotstxt__cache1 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->execute(); |
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if ($query->rowCount() > 0) { |
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$row = $query->fetch(\PDO::FETCH_ASSOC); |
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$this->clockSyncCheck($row['UNIX_TIMESTAMP()'], self::OUT_OF_SYNC_TIME_LIMIT); |
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if ($row['validUntil'] > $row['UNIX_TIMESTAMP()']) { |
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$nextUpdate = min($row['validUntil'], $nextUpdate); |
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$query = $this->pdo->prepare(<<<SQL |
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UPDATE robotstxt__cache1 |
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SET nextUpdate = :nextUpdate, worker = 0 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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$query->bindValue('nextUpdate', $nextUpdate, \PDO::PARAM_INT); |
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return $query->execute(); |
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} |
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} |
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return false; |
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} |
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/** |
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* Invalidate cache |
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* |
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* @return bool |
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*/ |
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public function invalidate() |
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{ |
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$query = $this->pdo->prepare(<<<SQL |
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DELETE FROM robotstxt__cache1 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindValue('base', $this->base, \PDO::PARAM_STR); |
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return $query->execute(); |
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} |
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} |
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VIPnytt /
RobotsTxtParser
