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<?php |
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namespace SilverStripe\EnvironmentCheck\Checks; |
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use SilverStripe\EnvironmentCheck\EnvironmentCheck; |
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/** |
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* Checks that one or more URLs are reachable via HTTP. |
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* Note that the HTTP connectivity can just be verified from the server to the remote URL, |
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* it can still fail if the URL in question is requested by the client, e.g. through an iframe. |
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* |
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* Requires curl to present, so ensure to check it before with the following: |
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* <code> |
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* EnvironmentCheckSuite::register( |
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* 'check', |
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* 'HasFunctionCheck("curl_init")', |
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* "Does PHP have CURL support?" |
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* ); |
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* </code> |
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*/ |
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class ExternalURLCheck implements EnvironmentCheck |
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{ |
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/** |
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* @var array |
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*/ |
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protected $urls = []; |
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/** |
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* @var Int Timeout in seconds. |
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*/ |
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protected $timeout; |
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/** |
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* @param string $urls Space-separated list of absolute URLs. |
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* @param int $timeout |
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*/ |
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public function __construct($urls, $timeout = 15) |
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{ |
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if ($urls) { |
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$this->urls = explode(' ', $urls); |
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} |
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$this->timeout = $timeout; |
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} |
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/** |
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* {@inheritDoc} |
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* |
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* @return array |
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*/ |
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public function check() |
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{ |
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$urls = $this->getURLs(); |
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$chs = []; |
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foreach ($urls as $url) { |
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$ch = curl_init(); |
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$chs[] = $ch; |
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curl_setopt_array($ch, $this->getCurlOpts($url)); |
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} |
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// Parallel execution for faster performance |
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$mh = curl_multi_init(); |
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foreach ($chs as $ch) { |
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curl_multi_add_handle($mh, $ch); |
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} |
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$active = null; |
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// Execute the handles |
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do { |
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$mrc = curl_multi_exec($mh, $active); |
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curl_multi_select($mh); |
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} while ($active > 0); |
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while ($active && $mrc == CURLM_OK) { |
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if (curl_multi_select($mh) != -1) { |
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do { |
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$mrc = curl_multi_exec($mh, $active); |
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} while ($mrc == CURLM_CALL_MULTI_PERFORM); |
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} |
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} |
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$hasError = false; |
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$msgs = []; |
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foreach ($chs as $ch) { |
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$url = curl_getinfo($ch, CURLINFO_EFFECTIVE_URL); |
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$code = curl_getinfo($ch, CURLINFO_HTTP_CODE); |
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if (curl_errno($ch) || $code >= 400) { |
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$hasError = true; |
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$msgs[] = sprintf( |
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'Error retrieving "%s": %s (Code: %s)', |
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$url, |
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curl_error($ch), |
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$code |
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); |
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} else { |
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$msgs[] = sprintf( |
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'Success retrieving "%s" (Code: %s)', |
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$url, |
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$code |
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); |
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} |
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} |
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// Close the handles |
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foreach ($chs as $ch) { |
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curl_multi_remove_handle($mh, $ch); |
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} |
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curl_multi_close($mh); |
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if ($hasError) { |
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return [EnvironmentCheck::ERROR, implode(', ', $msgs)]; |
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} |
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return [EnvironmentCheck::OK, implode(', ', $msgs)]; |
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} |
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/** |
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* @return array |
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*/ |
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protected function getCurlOpts($url) |
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{ |
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return [ |
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CURLOPT_URL => $url, |
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CURLOPT_HEADER => 0, |
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CURLOPT_RETURNTRANSFER => 1, |
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CURLOPT_FAILONERROR => 1, |
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CURLOPT_TIMEOUT => $this->timeout, |
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]; |
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} |
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/** |
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* @return array |
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*/ |
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protected function getURLs() |
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{ |
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return $this->urls; |
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} |
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} |
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silverstripe /
silverstripe-environmentcheck
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