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<?php namespace BinPacking3d; |
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use BinPacking3d\Entity\Packed; |
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use BinPacking3d\Entity\Request; |
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use BinPacking3d\Entity\Response; |
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use BinPacking3d\Exception\CriticalException; |
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use Doctrine\Common\Cache\Cache; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\Exception\RequestException; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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/** |
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* Class Query |
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* @package BinPacking3d |
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*/ |
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abstract class Query |
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{ |
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/** |
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* Regions |
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*/ |
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const REGION_US = 'US'; // US AWS |
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const REGION_EU = 'EU'; // EU AWS |
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const REGION_GLOBAL = 'GLOBAL'; // Global API used Latency based routing to find US or EU API |
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/** |
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* @var |
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*/ |
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protected $endpoint; |
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/** |
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* @var Client |
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*/ |
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private $client; |
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/** |
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* @var Request |
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*/ |
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private $request; |
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/** |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* @var |
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*/ |
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private $params; |
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/** |
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* @var |
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*/ |
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private $cache; |
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/** |
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* @var string |
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*/ |
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private $region; |
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/** |
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* @var int |
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*/ |
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private $cacheTtl = 3600; |
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/** |
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* @var |
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*/ |
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private $timeout; |
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/** |
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* @param string $region |
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*/ |
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public function __construct($region = self::REGION_GLOBAL) |
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{ |
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$this->region = $region; |
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$this->client = ClientFactory::getInstance( |
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$this->getUrl($region), |
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$this->getPem($region) |
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); |
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$this->setLogger(new NullLogger); |
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} |
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/** |
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* @param mixed $timeout |
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* @return Query |
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*/ |
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public function setTimeout($timeout) |
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{ |
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$this->timeout = $timeout; |
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return $this; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getTimeout() |
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{ |
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return $this->timeout; |
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} |
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/** |
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* Supplying a region will use the closest by URL |
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* Supplying false will disable certificate verification and will start using the global URL always |
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* |
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* @param string|bool $region |
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* @return string |
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*/ |
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public function getUrl($region) |
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{ |
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switch ($region) { |
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case self::REGION_US: |
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return 'https://us-east.api.3dbinpacking.com/packer/'; |
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case self::REGION_EU: |
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return 'https://eu.api.3dbinpacking.com/packer/'; |
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case self::REGION_GLOBAL: |
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default: |
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return 'https://global-api.3dbinpacking.com/packer/'; |
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} |
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} |
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/** |
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* Supplying false disables CA verification, which is not advised. |
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* Supplying a region will check against the proper certificate. |
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* |
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* @param string|bool $region |
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* @return string |
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*/ |
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public function getPem($region) |
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{ |
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switch ($region) { |
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case self::REGION_US: |
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return __DIR__ . '/../cert/us-east.api.3dbinpacking.com.pem'; |
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case self::REGION_EU: |
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return __DIR__ . '/../cert/eu.api.3dbinpacking.com.pem'; |
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case false: |
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return false; |
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case self::REGION_GLOBAL: |
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default: |
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return __DIR__ . '/../cert/global-api.3dbinpacking.com.pem'; |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getRegion() |
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{ |
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return $this->region; |
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} |
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/** |
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* @param string $region |
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* @return Query |
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*/ |
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public function setRegion($region) |
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{ |
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$this->region = $region; |
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return $this; |
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} |
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/** |
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* @return Client |
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*/ |
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public function getClient() |
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{ |
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return $this->client; |
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} |
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/** |
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* @param Client $client |
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* @return Query |
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*/ |
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public function setClient($client) |
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{ |
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$this->client = $client; |
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return $this; |
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} |
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/** |
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* @return int |
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*/ |
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public function getCacheTtl() |
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{ |
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return $this->cacheTtl; |
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} |
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/** |
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* @param int $cacheTtl |
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* @return Query |
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*/ |
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public function setCacheTtl($cacheTtl) |
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{ |
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$this->cacheTtl = $cacheTtl; |
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return $this; |
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} |
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/** |
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* @return LoggerInterface |
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*/ |
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public function getLogger() |
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{ |
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return $this->logger; |
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} |
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/** |
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* @param LoggerInterface $logger |
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* @return Query |
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*/ |
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public function setLogger(LoggerInterface $logger) |
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{ |
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$this->logger = $logger; |
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return $this; |
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} |
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/** |
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* @return Cache |
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*/ |
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public function getCache() |
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{ |
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return $this->cache; |
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} |
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/** |
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* @param Cache $cache |
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* @return $this |
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*/ |
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public function setCache(Cache $cache) |
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{ |
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$this->cache = $cache; |
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return $this; |
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} |
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/** |
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* @return Packed |
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* @throws \Exception |
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*/ |
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public function run() |
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{ |
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// Get url |
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$url = $this->getEndpoint(); |
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// Run request |
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try { |
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// Build request |
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$request = $this->renderRequest(); |
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$requestJson = $this->renderRequestJson(); |
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// Log request |
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$this->log('info', ($this->cache ? 'Request to cache' : 'Request to 3dbinpacking')); |
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$this->log('debug', $requestJson); |
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// Build cache key |
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$cacheKey = md5($requestJson); |
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// If we have cache, check if we can get some result |
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$contents = $this->getFromCache($cacheKey); |
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if ($contents) { |
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$this->log('info', 'Response from cache'); |
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$this->log('debug', json_encode($contents)); |
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return new Packed(new Response($contents), $this->request); |
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} |
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// Prepare request parameters |
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$params = [ |
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'json' => array_merge($request, ['params' => $this->getParams()]), |
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]; |
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// Add timeout |
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if (!is_null($this->timeout)) { |
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$params['timeout'] = $this->timeout; |
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} |
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// No cache, or not connected, then we perform the real request |
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$response = $this->client->get($url, $params); |
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return $this->handleResponse($response, $cacheKey); |
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} catch (RequestException $e) { |
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throw new CriticalException($e->getMessage(), 0, $e); |
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} |
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} |
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/** |
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* @return string |
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*/ |
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public function getEndpoint() |
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{ |
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return $this->endpoint; |
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} |
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/** |
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* @param string $endpoint |
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* @return Query |
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*/ |
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protected function setEndpoint($endpoint) |
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{ |
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$this->endpoint = $endpoint; |
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return $this; |
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} |
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/** |
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* @return array |
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*/ |
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public function renderRequest() |
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{ |
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return $this->request->render(); |
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} |
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/** |
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* @return string |
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*/ |
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public function renderRequestJson() |
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{ |
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return json_encode($this->renderRequest()); |
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} |
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/** |
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* @param string $level |
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* @param $message |
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* @return bool |
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*/ |
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private function log($level, $message) |
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{ |
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return $this->logger->{$level}($message); |
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} |
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/** |
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* @param string $cacheKey |
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* @return mixed |
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*/ |
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private function getFromCache($cacheKey) |
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{ |
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if ($this->cache && $this->cache->contains($cacheKey)) { |
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return json_decode($this->cache->fetch($cacheKey)); |
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} |
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return false; |
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} |
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/** |
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* @return mixed |
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*/ |
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public function getParams() |
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{ |
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return $this->params; |
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} |
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/** |
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* @param mixed $params |
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* @return Query |
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*/ |
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public function setParams($params) |
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{ |
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$this->params = $params; |
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return $this; |
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} |
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/** |
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* Handle response and return |
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* |
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* @param \Psr\Http\Message\ResponseInterface $response |
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* @param string $cacheKey |
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* @return Packed |
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* @throws CriticalException |
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*/ |
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public function handleResponse(\Psr\Http\Message\ResponseInterface $response, $cacheKey = null) |
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{ |
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$contents = $response->getBody()->getContents(); |
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// Log response |
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$this->log('info', 'Response from 3dbinpacking'); |
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$this->log('debug', $contents); |
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if ($response->getStatusCode() === 200) { |
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// If cache and we get here, save it |
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$this->saveToCache($cacheKey, $contents); |
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// Return Packed object with data processed |
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return new Packed(new Response(json_decode($contents)), $this->request); |
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} |
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throw new CriticalException('Non 200 response'); |
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} |
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/** |
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* @param $cacheKey |
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* @param string $contents |
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*/ |
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private function saveToCache($cacheKey, $contents) |
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{ |
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if ($this->cache && !is_null($cacheKey)) { |
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return $this->cache->save($cacheKey, $contents, $this->cacheTtl); |
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} |
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return false; |
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} |
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/** |
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* @param Request $request |
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* @return $this |
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*/ |
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protected function setRequest(Request $request) |
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{ |
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$this->request = $request; |
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return $this; |
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} |
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} |
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