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<?php |
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namespace vipnytt\RobotsTxtParser; |
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use PDO; |
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use vipnytt\RobotsTxtParser\Client\SQL\Cache\CacheCoreSQL; |
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use vipnytt\RobotsTxtParser\Client\SQL\SQLMaintenance; |
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use vipnytt\RobotsTxtParser\Parser\UrlParser; |
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/** |
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* Class SQL |
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* |
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* @package vipnytt\RobotsTxtParser |
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*/ |
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class SQL extends CacheCoreSQL |
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{ |
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use UrlParser; |
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/** |
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* Client nextUpdate margin in seconds |
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* @var int |
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*/ |
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private $clientUpdateMargin = 300; |
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/** |
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* Cache constructor. |
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* |
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* @param PDO $pdo |
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* @param array $guzzleConfig |
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* @param int|null $byteLimit |
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*/ |
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public function __construct(PDO $pdo, array $guzzleConfig = [], $byteLimit = self::BYTE_LIMIT) |
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{ |
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parent::__construct($pdo, $guzzleConfig, $byteLimit); |
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} |
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/** |
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* Parser client |
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* |
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* @param string $baseUri |
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* @return Basic |
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*/ |
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public function client($baseUri) |
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{ |
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$base = $this->urlBase($this->urlEncode($baseUri)); |
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$query = $this->pdo->prepare(<<<SQL |
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SELECT |
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content, |
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statusCode, |
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nextUpdate, |
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worker |
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FROM robotstxt__cache0 |
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WHERE base = :base; |
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SQL |
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); |
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$query->bindParam(':base', $base, PDO::PARAM_STR); |
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$query->execute(); |
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if ($query->rowCount() > 0) { |
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$row = $query->fetch(PDO::FETCH_ASSOC); |
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if ($row['nextUpdate'] >= (time() - $this->clientUpdateMargin)) { |
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$this->markAsActive($base, $row['worker']); |
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return new Basic($base, $row['code'], $row['content'], self::ENCODING, $this->byteLimit); |
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} |
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} |
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$request = new URI($base, $this->guzzleConfig, $this->byteLimit); |
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$this->push($request); |
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$this->markAsActive($base); |
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return new Basic($base, $request->getStatusCode(), $request->getContents(), self::ENCODING, $this->byteLimit); |
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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 string $base |
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* @param int|null $workerID |
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* @return bool |
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*/ |
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private function markAsActive($base, $workerID = 0) |
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{ |
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if ($workerID == 0) { |
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$query = $this->pdo->prepare(<<<SQL |
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UPDATE robotstxt__cache0 |
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SET worker = NULL |
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WHERE base = :base AND worker = 0; |
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SQL |
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); |
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$query->bindParam(':base', $base, PDO::PARAM_STR); |
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return $query->execute(); |
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} |
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return true; |
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} |
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/** |
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* Maintenance |
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* |
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* @return SQLMaintenance |
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*/ |
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public function maintenance() |
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{ |
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return new SQLMaintenance($this->pdo); |
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} |
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} |
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VIPnytt /
RobotsTxtParser
