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<?php |
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namespace TheIconic\Tracking\GoogleAnalytics\Network; |
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use TheIconic\Tracking\GoogleAnalytics\AnalyticsResponse; |
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use GuzzleHttp\Client; |
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use GuzzleHttp\Psr7\Request; |
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use GuzzleHttp\Promise; |
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use GuzzleHttp\Promise\PromiseInterface; |
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use Psr\Http\Message\RequestInterface; |
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use Psr\Http\Message\ResponseInterface; |
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/** |
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* Class HttpClient |
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* |
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* @package TheIconic\Tracking\GoogleAnalytics |
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*/ |
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class HttpClient |
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{ |
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/** |
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* User agent for the client. |
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*/ |
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const PHP_GA_MEASUREMENT_PROTOCOL_USER_AGENT = |
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'THE ICONIC GA Measurement Protocol PHP Client (https://github.com/theiconic/php-ga-measurement-protocol)'; |
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/** |
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* Timeout in seconds for the request connection and actual request execution. |
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* Using the same value you can find in Google's PHP Client. |
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*/ |
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const REQUEST_TIMEOUT_SECONDS = 100; |
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/** |
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* HTTP client. |
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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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* Holds the promises (async responses). |
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* |
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* @var PromiseInterface[] |
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*/ |
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private static $promises = []; |
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/** |
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* We have to unwrap and send all promises at the end before analytics objects is destroyed. |
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*/ |
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public function __destruct() |
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{ |
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Promise\unwrap(self::$promises); |
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} |
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/** |
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* Sets HTTP client. |
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* |
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* @internal |
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* @param Client $client |
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*/ |
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public function setClient(Client $client) |
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{ |
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$this->client = $client; |
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} |
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/** |
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* Gets HTTP client for internal class use. |
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* |
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* @return Client |
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*/ |
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private function getClient() |
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{ |
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if ($this->client === null) { |
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// @codeCoverageIgnoreStart |
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$this->setClient(new Client()); |
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} |
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// @codeCoverageIgnoreEnd |
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return $this->client; |
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} |
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/** |
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* Sends request to Google Analytics. |
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* |
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* @internal |
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* @param string $url |
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* @param array $options |
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* @return AnalyticsResponse |
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*/ |
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public function post($url, array $options = []) |
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{ |
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$request = new Request( |
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'GET', |
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$url, |
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['User-Agent' => self::PHP_GA_MEASUREMENT_PROTOCOL_USER_AGENT] |
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); |
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$opts = $this->parseOptions($options); |
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$response = $this->getClient()->sendAsync($request, [ |
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'synchronous' => !$opts['async'], |
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'timeout' => $opts['timeout'], |
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'connect_timeout' => $opts['timeout'], |
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]); |
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if ($opts['async']) { |
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self::$promises[] = $response; |
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} else { |
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$response = $response->wait(); |
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} |
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return $this->getAnalyticsResponse($request, $response); |
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} |
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/** |
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* Parse the given options and fill missing fields with default values. |
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* |
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* @param array $options |
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* @return array |
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*/ |
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private function parseOptions(array $options) |
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{ |
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$defaultOptions = [ |
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'timeout' => static::REQUEST_TIMEOUT_SECONDS, |
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'async' => false, |
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]; |
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$opts = []; |
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foreach ($defaultOptions as $option => $value) { |
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$opts[$option] = isset($options[$option]) ? $options[$option] : $defaultOptions[$option]; |
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} |
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if (!is_int($opts['timeout']) || $opts['timeout'] <= 0) { |
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throw new \UnexpectedValueException('The timeout must be an integer with a value greater than 0'); |
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} |
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if (!is_bool($opts['async'])) { |
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throw new \UnexpectedValueException('The async option must be boolean'); |
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} |
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return $opts; |
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} |
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/** |
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* Creates an analytics response object. |
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* |
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* @param RequestInterface $request |
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* @param ResponseInterface|PromiseInterface $response |
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* @return AnalyticsResponse |
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*/ |
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protected function getAnalyticsResponse(RequestInterface $request, $response) |
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{ |
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return new AnalyticsResponse($request, $response); |
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} |
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} |
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theiconic /
php-ga-measurement-protocol
