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<?php |
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namespace TraderInteractive\Api; |
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use GuzzleHttp\Psr7; |
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use Psr\Http\Message\ResponseInterface; |
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use SubjectivePHP\Psr\SimpleCache\Serializer\SerializerInterface; |
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final class ResponseSerializer implements SerializerInterface |
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{ |
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/** |
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* @var array |
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*/ |
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const REQUIRED_CACHE_KEYS = [ |
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'statusCode', |
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'headers', |
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'body', |
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]; |
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/** |
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* Unserializes cached data into the original psr response. |
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* |
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* @param mixed $data The data to unserialize. |
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* |
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* @return Psr7\Response |
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* |
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* @throws SerializerException Thrown if the given value cannot be unserialized. |
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*/ |
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public function unserialize($data) |
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{ |
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$this->validateCachedData($data); |
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$statusCode = $data['statusCode']; |
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$headers = $data['headers']; |
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$body = $data['body']; |
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if ($body !== '') { |
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$body = Psr7\Utils::streamFor($body); |
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} |
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return new Psr7\Response($statusCode, $headers, $body); |
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} |
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/** |
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* Serializes the given psr response for storage in caching. |
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* |
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* @param Psr7\Response $response The http response message to serialize for caching. |
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* |
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* @return mixed The result of serializing the given $data. |
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* |
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* @throws SerializerException Thrown if the given value cannot be serialized for caching. |
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*/ |
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public function serialize($response) |
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{ |
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if (!($response instanceof ResponseInterface)) { |
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$type = is_object($response) ? get_class($response) : gettype($response); |
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throw new SerializerException("Cannot serialize value of type '{$type}'"); |
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} |
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return [ |
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'statusCode' => $response->getStatusCode(), |
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'headers' => $response->getHeaders(), |
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'body' => $response->getBody()->getContents(), |
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]; |
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} |
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private function validateCachedData($data) |
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{ |
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if (!is_array($data)) { |
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throw new SerializerException('Serialized data is not an array'); |
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} |
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foreach (self::REQUIRED_CACHE_KEYS as $key) { |
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if (!array_key_exists($key, $data)) { |
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throw new SerializerException("Data is missing '{$key}' value"); |
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} |
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} |
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} |
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} |
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traderinteractive /
tol-api-php
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