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<?php |
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namespace WebservicesNl\Protocol\Soap\Client; |
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use GuzzleHttp\Client as httpClient; |
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use GuzzleHttp\Exception\ClientException; |
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use GuzzleHttp\Exception\ConnectException; |
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use GuzzleHttp\Psr7\Request; |
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use Psr\Log\LoggerAwareTrait; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\LogLevel; |
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use WebservicesNl\Common\Endpoint\Manager; |
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use WebservicesNl\Common\Exception\ClientException as WsClientException; |
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use WebservicesNl\Common\Exception\Server\NoServerAvailableException; |
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use WebservicesNl\Connector\Client\ClientInterface; |
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use WebservicesNl\Protocol\Soap\Exception\ConverterInterface; |
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/** |
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* PHP SoapClient with curl for HTTP transport. |
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* |
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* Extends the native PHP SoapClient. Adds PSR7 Client (Guzzle) for making the calls for better timeout management. |
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* Also optional loggerInterface (middleware client) helps with tracing and debugging calls. |
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*/ |
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class SoapClient extends \SoapClient implements ClientInterface |
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{ |
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use LoggerAwareTrait; |
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const PROTOCOL = 'soap'; |
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/** |
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* @var ConverterInterface |
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*/ |
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private $converter; |
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/** |
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* Guzzle Client for the SOAP calls. |
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* |
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* @var HttpClient |
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*/ |
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private $httpClient; |
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/** |
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* @var Manager |
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*/ |
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private $manager; |
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/** |
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* Soap settings. |
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* |
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* @var SoapSettings; |
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*/ |
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private $settings; |
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/** |
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* Content types for SOAP versions. |
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* |
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* @var array(string=>string) |
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*/ |
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protected static $versionToContentTypeMap = [ |
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SOAP_1_1 => 'text/xml; charset=utf-8', |
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SOAP_1_2 => 'application/soap+xml; charset=utf-8', |
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]; |
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/** |
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* SoapClient constructor. |
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* |
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* @param SoapSettings $settings |
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* @param Manager $manager |
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* @param $client |
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* |
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* @throws NoServerAvailableException |
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* @throws \InvalidArgumentException |
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*/ |
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public function __construct(SoapSettings $settings, Manager $manager, $client) |
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{ |
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$this->settings = $settings; |
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$this->manager = $manager; |
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$this->httpClient = $client; |
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// throws an Exception when no endpoint is met |
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$active = $this->manager->getActiveEndpoint(); |
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$this->log('Initial endpoint is ' . (string)$active->getUri(), LogLevel::INFO); |
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// initiate the native PHP SoapClient for fetching all the WSDL stuff |
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parent::__construct((string)$active->getUri()->withQuery('wsdl'), $this->settings->toArray()); |
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} |
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/** |
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* Triggers the SOAP request over HTTP. |
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* Sent request by cURL instead of native SOAP request. |
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* |
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* @param string $request |
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* @param string $location |
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* @param string $action |
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* @param int $version |
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* @param string|null $one_way |
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* |
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* @return string The XML SOAP response. |
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* @throws WsClientException |
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* @throws NoServerAvailableException |
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* @throws \InvalidArgumentException |
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* @throws \SoapFault |
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*/ |
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public function __doRequest($request, $location, $action, $version, $one_way = null) |
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{ |
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$active = $this->manager->getActiveEndpoint(); |
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try { |
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$response = $this->doHttpRequest($request, (string)$active->getUri(), $action); |
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$this->manager->updateLastConnected(); |
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return $response; |
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} // when a connection failed try the next server, else return the response |
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catch (ConnectException $exception) { |
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$active->setStatus('error'); |
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$this->log('Endpoint is not responding', 'error', ['endpoint' => $active]); |
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return $this->__doRequest($request, $location, $action, $version, $one_way); |
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} |
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} |
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/** |
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* Proxy function to SoapCall |
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* |
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* @param array $args |
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* |
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* @return mixed |
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* @throws \Exception |
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* @throws \SoapFault |
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*/ |
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public function call(array $args = []) |
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{ |
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$args += ['functionName' => '']; |
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$functionName = $args['functionName']; |
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unset($args['functionName']); |
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return $this->soapCall($functionName, $args); |
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} |
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/** |
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* Determine the SOAPHeaders for given version. |
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* |
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* @param string $action |
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* |
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* @return array |
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*/ |
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private function createHeaders($action) |
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{ |
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$headers = ['Content-Type' => self::$versionToContentTypeMap[$this->settings->getSoapVersion()]]; |
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if ($this->settings->getSoapVersion() === SOAP_1_1) { |
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$headers['SOAPAction'] = $action; |
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} |
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return $headers; |
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} |
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/** |
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* Determines methods. |
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* For Soap it's either GET or POST. |
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* |
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* @param mixed $request |
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* |
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* @return string |
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*/ |
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private static function determineMethod($request) |
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{ |
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return ($request === null || (is_string($request) && trim($request) === '')) ? 'GET' : 'POST'; |
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} |
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/** |
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* Http version of doRequest. |
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* |
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* @param mixed $requestBody |
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* @param string $location |
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* @param string $action |
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* |
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* @return string |
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* @throws WsClientException |
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* @throws \SoapFault |
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* @throws \InvalidArgumentException |
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* @todo move exception handler to middleware, find solution error suppressing |
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*/ |
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private function doHttpRequest($requestBody, $location, $action) |
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{ |
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// get soap details for request |
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$headers = $this->createHeaders($action); |
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$method = self::determineMethod($requestBody); |
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// try to fire a request and return it |
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try { |
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$requestObj = new Request($method, $location, $headers, $requestBody); |
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$response = $this->httpClient->send($requestObj); |
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// Throw a SoapFault if the response was received, but it can't be read into valid XML |
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if ($response->getStatusCode() > 399 && @simplexml_load_string((string)$response->getBody()) === false) { |
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throw new \SoapFault('Server', 'Invalid SoapResponse'); |
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} |
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return (string)$response->getBody(); |
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} catch (ClientException $e) { |
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// if a client exception is thrown, the guzzle instance, is configured to throw exceptions |
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$code = ($e->getResponse() !== null) ? 'Server' : 'Client.Input'; |
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throw new \SoapFault('Client', $e->getMessage(), null, $code); |
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} |
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} |
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/** |
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* @return ConverterInterface |
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*/ |
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public function getConverter() |
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{ |
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return $this->converter; |
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} |
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/** |
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* @param ConverterInterface $converter |
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*/ |
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public function setConverter($converter) |
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{ |
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$this->converter = $converter; |
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} |
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/** |
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* @return httpClient |
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*/ |
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public function getHttpClient() |
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{ |
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return $this->httpClient; |
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} |
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/** |
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* Return this connector over which a connection is established. |
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* |
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* @return string |
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*/ |
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public function getProtocolName() |
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{ |
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return static::PROTOCOL; |
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} |
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/** |
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* Log message. |
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* |
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* @param string $message |
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* @param int $level |
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* @param array $context |
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*/ |
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public function log($message, $level, array $context = []) |
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{ |
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if ($this->logger instanceof LoggerInterface) { |
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$this->logger->log($level, $message, $context); |
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} |
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} |
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/** |
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* Prepares the soapCall. |
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* |
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* @param string $function_name |
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* @param array $arguments |
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* @param array $options |
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* @param array $input_headers |
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* @param array|null $output_headers |
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* |
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* @return mixed |
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* @throws \Exception|\SoapFault |
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*/ |
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public function soapCall( |
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$function_name, |
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array $arguments = [], |
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array $options = [], |
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array $input_headers = [], |
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&$output_headers = null |
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) { |
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$this->log('Called:' . $function_name, LogLevel::INFO, ['arguments' => $arguments]); |
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try { |
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return parent::__soapCall($function_name, $arguments, $options, $input_headers, $output_headers); |
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} catch (\SoapFault $fault) { |
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if ($this->getConverter() !== null) { |
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throw $this->getConverter()->convertToException($fault); |
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} |
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throw $fault; |
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} |
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} |
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} |
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Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different sub-classes of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the parent class: