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<?php |
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namespace PragmaRX\Health\Checkers; |
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use GuzzleHttp\TransferStats; |
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use GuzzleHttp\Client as Guzzle; |
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use Illuminate\Support\Collection; |
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class HttpChecker extends BaseChecker |
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{ |
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/** |
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* @var bool |
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*/ |
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protected $secure = false; |
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/** |
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* @var |
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*/ |
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protected $guzzle; |
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/** |
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* @var |
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*/ |
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private $totalTime; |
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/** |
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* @var |
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*/ |
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private $url; |
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/** |
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* HTTP Checker. |
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* |
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* @return bool |
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*/ |
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public function check() |
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{ |
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try { |
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$health = []; |
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foreach ($this->getResourceUrlArray() as $url) { |
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list($healthy, $message) = $this->checkWebPage( |
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$this->makeUrlWithScheme($url, $this->secure), |
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$this->secure |
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); |
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$health[] = $this->makeResult($healthy, $message); |
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} |
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return $health; |
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} catch (\Exception $exception) { |
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return $this->makeResultFromException($exception); |
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} |
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} |
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/** |
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* Get array of resource urls. |
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* |
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* @return array |
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*/ |
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private function getResourceUrlArray() |
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{ |
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if (is_a($this->resource['url'], Collection::class)) { |
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return $this->resource['url']->toArray(); |
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} |
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return (array) $this->resource['url']; |
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} |
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/** |
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* Check web pages. |
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* |
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* @param $url |
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* @param bool $ssl |
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* @return mixed |
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*/ |
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private function checkWebPage($url, $ssl = false) |
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{ |
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$success = $this->requestSuccessful($url, $ssl); |
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return [ |
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$success, |
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$success ? '' : $this->getErrorMessage(), |
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]; |
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} |
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/** |
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* Send an http request and fetch the response. |
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* |
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* @param $url |
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* @param $ssl |
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* @return mixed|\Psr\Http\Message\ResponseInterface |
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*/ |
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private function fetchResponse($url, $ssl) |
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{ |
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$this->url = $url; |
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return (new Guzzle())->request( |
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'GET', |
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$this->url, |
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$this->getConnectionOptions($ssl) |
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); |
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} |
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/** |
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* Get http connection options. |
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* |
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* @param $ssl |
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* @return array |
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*/ |
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private function getConnectionOptions($ssl) |
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{ |
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return [ |
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'connect_timeout' => $this->getConnectionTimeout(), |
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'timeout' => $this->getConnectionTimeout(), |
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'verify' => $ssl, |
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'on_stats' => $this->onStatsCallback(), |
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]; |
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} |
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/** |
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* Get the error message. |
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* |
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* @return string |
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*/ |
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private function getErrorMessage() |
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{ |
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$message = array_get($this->resource, 'timeout_message') ?: |
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'[TIMEOUT] A request to %s took %s seconds. Timeout is set to %s seconds.'; |
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return sprintf( |
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$message, |
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$this->url, |
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$this->totalTime, |
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$this->getRoundtripTimeout() |
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); |
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} |
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/** |
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* The the connection timeout. |
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* |
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* @return int |
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*/ |
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private function getConnectionTimeout() |
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{ |
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return array_get($this->resource, 'connection_timeout') ?: 30; |
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} |
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/** |
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* The the roundtrip timeout. |
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* |
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* @return int |
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*/ |
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private function getRoundtripTimeout() |
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{ |
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return array_get($this->resource, 'roundtrip_timeout') ?: 30; |
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} |
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/** |
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* Make a url with a proper scheme. |
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* |
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* @param $url |
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* @param $secure |
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* @return mixed |
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*/ |
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private function makeUrlWithScheme($url, $secure) |
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{ |
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return preg_replace('|^((https?:)?\/\/)?(.*)|', 'http'.($secure ? 's' : '').'://\\3', $url); |
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} |
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/** |
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172
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* Guzzle OnStats callback. |
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* |
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* @return \Closure |
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*/ |
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private function onStatsCallback() |
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{ |
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6 |
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return function (TransferStats $stats) { |
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$this->totalTime = $stats->getTransferTime(); |
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}; |
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} |
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/** |
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* Send a request and get the result. |
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* |
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* @param $url |
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* @param $ssl |
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* @return bool |
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* @internal param $response |
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*/ |
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6 |
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private function requestSuccessful($url, $ssl) |
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{ |
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return $this->fetchResponse($url, $ssl)->getStatusCode() == 200 && |
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! $this->requestTimedout(); |
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} |
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/** |
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* Check if the request timed out. |
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* |
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200
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* @return bool |
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*/ |
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6 |
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private function requestTimedout() |
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{ |
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return $this->totalTime > $this->getRoundtripTimeout(); |
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} |
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} |
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|
antonioribeiro /
health
