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<?php |
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namespace Facile\CrossbarHTTPPublisherBundle\Publisher; |
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use Facile\CrossbarHTTPPublisherBundle\Exception\PublishRequestException; |
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use GuzzleHttp\Client; |
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/** |
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* Class Publisher |
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* @package Facile\CrossbarHTTPPublisherBundle\Publisher |
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*/ |
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class Publisher |
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{ |
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/** @var \GuzzleHttp\Client */ |
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private $client; |
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/** @var string */ |
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private $key; |
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/** @var string */ |
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private $secret; |
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/** |
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* @param Client $client |
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* @param $key |
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* @param $secret |
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*/ |
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public function __construct(Client $client, $key, $secret) |
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{ |
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$this->client = $client; |
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$this->key = $key; |
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$this->secret = $secret; |
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} |
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/** |
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* @param $topic string |
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* @param $args array|null |
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* @param $kwargs array|null |
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* @return array JSON decoded response |
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* @throws \Exception |
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*/ |
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public function publish($topic, array $args = null, array $kwargs = null) |
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{ |
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$jsonBody = $this->prepareBody($topic, $args, $kwargs); |
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try { |
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$response = $this->client->post( |
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'', |
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[ |
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'json' => $jsonBody, |
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'query' => $this->prepareSignature($jsonBody) |
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] |
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); |
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} catch (\Exception $e) { |
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throw new PublishRequestException($e->getMessage(), 500, $e); |
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} |
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return json_decode($response->getBody(), true); |
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} |
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/** |
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* @param $topic |
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* @param $args |
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* @param $kwargs |
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* @return array |
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*/ |
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private function prepareBody($topic, $args, $kwargs) |
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{ |
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$body = array(); |
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$body['topic'] = $topic; |
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if (null !== $args) { |
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$body['args'] = $args; |
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} |
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if (null !== $kwargs) { |
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$body['kwargs'] = $kwargs; |
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} |
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return $body; |
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} |
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/** |
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* @param array $body |
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* @return array |
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*/ |
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private function prepareSignature($body) |
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{ |
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$query = array(); |
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$seq = mt_rand(0, pow(2, 12)); |
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$now = new \DateTime('now', new \DateTimeZone('UTC')); |
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$timestamp = $now->format("Y-m-d\TH:i:s.u\Z"); |
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$query['seq'] = $seq; |
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$query['timestamp'] = $timestamp; |
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if (null !== $this->key && null !== $this->secret) { |
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$nonce = mt_rand(0, pow(2, 53)); |
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$signature = hash_hmac( |
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'sha256', |
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$this->key . $timestamp . $seq . $nonce . json_encode($body), |
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$this->secret, |
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true |
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); |
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$query['key'] = $this->key; |
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$query['nonce'] = $nonce; |
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$query['signature'] = strtr(base64_encode($signature), '+/', '-_'); |
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} |
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return $query; |
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} |
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} |
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facile-it /
crossbar-http-publisher-bundle
