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<?php |
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namespace ByJG\ApiTools; |
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use ByJG\ApiTools\Base\Schema; |
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use ByJG\ApiTools\Exception\InvalidRequestException; |
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use ByJG\ApiTools\Exception\NotMatchedException; |
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use ByJG\ApiTools\Exception\StatusCodeNotMatchedException; |
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use ByJG\Util\Psr7\MessageException; |
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use ByJG\Util\Psr7\Request; |
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use ByJG\Util\Psr7\Response; |
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use ByJG\Util\Uri; |
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use MintWare\Streams\MemoryStream; |
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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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* Abstract baseclass for request handlers. |
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* |
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* The baseclass provides processing and verification of request and response. |
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* It only delegates the actual message exchange to the derived class. For the |
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* messages, it uses the PSR-7 implementation from Guzzle. |
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* |
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* This is an implementation of the Template Method Patttern |
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* (https://en.wikipedia.org/wiki/Template_method_pattern). |
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*/ |
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abstract class AbstractRequester |
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{ |
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/** |
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* @var Schema |
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*/ |
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protected $schema = null; |
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protected $statusExpected = 200; |
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protected $assertHeader = []; |
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protected $assertBody = null; |
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/** |
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* @var RequestInterface |
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*/ |
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protected $psr7Request; |
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/** |
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* AbstractRequester constructor. |
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* @throws MessageException |
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*/ |
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public function __construct() |
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{ |
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$this->withPsr7Request(Request::getInstance(new Uri("/"))->withMethod("get")); |
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} |
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/** |
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* abstract function to be implemented by derived classes |
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* |
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* This function must be implemented by derived classes. It should process |
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* the given request and return an according response. |
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* |
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* @param RequestInterface $request |
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* @return ResponseInterface |
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*/ |
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abstract protected function handleRequest(RequestInterface $request); |
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/** |
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* @param Schema $schema |
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* @return $this |
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*/ |
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public function withSchema($schema) |
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{ |
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$this->schema = $schema; |
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return $this; |
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} |
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/** |
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* @return bool |
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*/ |
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public function hasSchema() |
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{ |
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return !empty($this->schema); |
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} |
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/** |
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* @param string $method |
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* @return $this |
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* @throws MessageException |
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*/ |
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public function withMethod($method) |
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{ |
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$this->psr7Request->withMethod($method); |
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return $this; |
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} |
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/** |
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* @param string $path |
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* @return $this |
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*/ |
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public function withPath($path) |
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{ |
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$this->psr7Request->getUri()->withPath($path); |
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return $this; |
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} |
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/** |
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* @param array $requestHeader |
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* @return $this |
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*/ |
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public function withRequestHeader($requestHeader) |
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{ |
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foreach ((array)$requestHeader as $name => $value) { |
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$this->psr7Request->withHeader($name, $value); |
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} |
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return $this; |
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} |
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/** |
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* @param array $query |
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* @return $this |
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*/ |
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public function withQuery($query = null) |
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{ |
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if (is_null($query)) { |
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$this->query = []; |
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return $this; |
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} |
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$currentQuery = []; |
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parse_str($this->psr7Request->getUri()->getQuery(), $currentQuery); |
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$this->psr7Request->getUri()->withQuery(http_build_query(array_merge($currentQuery, $query))); |
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return $this; |
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} |
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/** |
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* @param null $requestBody |
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* @return $this |
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*/ |
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public function withRequestBody($requestBody) |
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{ |
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$contentType = $this->psr7Request->getHeader("Content-Type"); |
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if (is_array($requestBody) && (empty($contentType) || $contentType == "application/json")) { |
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$requestBody = json_encode($requestBody); |
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} |
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$this->psr7Request->withBody(new MemoryStream($requestBody)); |
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return $this; |
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} |
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public function withPsr7Request(RequestInterface $requesInterface) |
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{ |
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$this->psr7Request = clone $requesInterface; |
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$this->psr7Request->withHeader("Accept", "application/json"); |
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} |
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public function assertResponseCode($code) |
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{ |
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$this->statusExpected = $code; |
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return $this; |
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} |
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public function assertHeaderContains($header, $contains) |
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{ |
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$this->assertHeader[$header] = $contains; |
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return $this; |
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} |
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public function assertBodyContains($contains) |
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{ |
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$this->assertBody = $contains; |
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return $this; |
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} |
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/** |
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* @return Response|ResponseInterface |
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* @throws Exception\DefinitionNotFoundException |
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* @throws Exception\GenericSwaggerException |
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* @throws Exception\HttpMethodNotFoundException |
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* @throws Exception\InvalidDefinitionException |
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* @throws Exception\PathNotFoundException |
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* @throws NotMatchedException |
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* @throws StatusCodeNotMatchedException |
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* @throws MessageException |
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* @throws InvalidRequestException |
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*/ |
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public function send() |
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{ |
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// Process URI based on the OpenAPI schema |
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$uriSchema = new Uri($this->schema->getServerUrl()); |
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$this->psr7Request->getUri() |
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->withScheme($uriSchema->getScheme()) |
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->withHost($uriSchema->getHost()) |
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->withPort($uriSchema->getPort()) |
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->withPath($uriSchema->getPath() . $this->psr7Request->getUri()->getPath()); |
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if (!preg_match("~^{$this->schema->getBasePath()}~", $this->psr7Request->getUri()->getPath())) { |
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$this->psr7Request->getUri()->withPath($this->schema->getBasePath() . $this->psr7Request->getUri()->getPath()); |
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} |
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// Prepare Body to Match Against Specification |
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$requestBody = $this->psr7Request->getBody(); |
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if (!empty($requestBody)) { |
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$requestBody = $requestBody->getContents(); |
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$contentType = $this->psr7Request->getHeader("content-type"); |
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if (empty($contentType) || $contentType == "application/json") { |
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$requestBody = json_decode($requestBody, true); |
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} else { |
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throw new InvalidRequestException("Cannot handle Content Type '$contentType'"); |
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} |
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} |
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// Check if the body is the expected before request |
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$bodyRequestDef = $this->schema->getRequestParameters($this->psr7Request->getUri()->getPath(), $this->psr7Request->getMethod()); |
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$bodyRequestDef->match($requestBody); |
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// Handle Request |
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$response = $this->handleRequest($this->psr7Request); |
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$responseHeader = $response->getHeaders(); |
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$responseBodyStr = (string) $response->getBody(); |
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$responseBody = json_decode($responseBodyStr, true); |
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$statusReturned = $response->getStatusCode(); |
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// Assert results |
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if ($this->statusExpected != $statusReturned) { |
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throw new StatusCodeNotMatchedException( |
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"Status code not matched: Expected {$this->statusExpected}, got {$statusReturned}", |
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$responseBody |
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); |
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} |
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$bodyResponseDef = $this->schema->getResponseParameters( |
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$this->psr7Request->getUri()->getPath(), |
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$this->psr7Request->getMethod(), |
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$this->statusExpected |
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); |
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$bodyResponseDef->match($responseBody); |
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foreach ($this->assertHeader as $key => $value) { |
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if (!isset($responseHeader[$key]) || strpos($responseHeader[$key][0], $value) === false) { |
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throw new NotMatchedException( |
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"Does not exists header '$key' with value '$value'", |
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$responseHeader |
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); |
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} |
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} |
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if (!empty($this->assertBody) && strpos($responseBodyStr, $this->assertBody) === false) { |
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throw new NotMatchedException("Body does not contain '{$this->assertBody}'"); |
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} |
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return $response; |
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} |
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} |
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In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: