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<?php |
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/** |
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* This file is part of the PHP SDK library for the Superdesk Content API. |
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* |
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* Copyright 2015 Sourcefabric z.u. and contributors. |
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* |
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* For the full copyright and license information, please see the |
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* AUTHORS and LICENSE files distributed with this source code. |
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* |
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* @copyright 2015 Sourcefabric z.ú. |
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* @license http://www.superdesk.org/license |
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*/ |
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namespace Superdesk\ContentApiSdk\Client; |
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use Superdesk\ContentApiSdk\API\Request\RequestInterface; |
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use Superdesk\ContentApiSdk\API\Request\OAuthDecorator; |
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use Superdesk\ContentApiSdk\API\Response; |
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use Superdesk\ContentApiSdk\ContentApiSdk; |
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use Superdesk\ContentApiSdk\Exception\AuthenticationException; |
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use Superdesk\ContentApiSdk\Exception\AccessDeniedException; |
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use Superdesk\ContentApiSdk\Exception\ClientException; |
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use Superdesk\ContentApiSdk\Exception\ResponseException; |
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/** |
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* Request client that implements all methods regarding basic request/response |
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* handling for the Content API. |
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*/ |
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class DefaultApiClient extends AbstractApiClient |
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{ |
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/** |
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* Default request headers. |
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* |
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* @var array |
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*/ |
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protected $headers = array( |
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'Accept' => 'application/json' |
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); |
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/** |
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* {@inheritdoc} |
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*/ |
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public function makeApiCall(RequestInterface $request) |
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{ |
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// Request tokens when none are set |
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if ($this->authenticator->getAccessToken() === null) { |
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$this->getNewToken($request); |
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} |
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$response = $this->sendRequest($this->authenticateRequest($request)); |
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if ($response['status'] === 401) { |
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$this->incrementAuthenticationRetryAttempt(); |
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if ($this->isAuthenticationRetryLimitReached()) { |
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throw new AccessDeniedException('Authentication retry limit reached.'); |
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} |
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// Once SD-3820 is fixed, implement SWP-92 branch, it will use |
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// the refresh token functionality, instead of request a new token |
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// each time this method is called. |
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$this->getNewToken($request); |
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// Retry making an api call |
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return $this->makeApiCall($request); |
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} |
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if ($response['status'] == 200) { |
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$this->resetAuthenticationRetryAttempt(); |
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return $this->createResponseObject($response); |
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} |
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throw new ClientException(sprintf('The server returned an error with status %s.', $response['status']), $response['status']); |
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} |
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/** |
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* Creates response object from response array. |
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* |
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* @param array $response |
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* |
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* @return Response API Response object |
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* |
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* @throws ClientException Thrown when response object could not be created |
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*/ |
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private function createResponseObject(array $response) |
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{ |
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try { |
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return new Response($response['body'], $response['headers']); |
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} catch (ResponseException $e) { |
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throw new ClientException($e->getMessage(), $e->getCode(), $e); |
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} |
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} |
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/** |
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* Adds authentication details to request with OAuth decorator. |
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* |
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* @param RequestInterface $request |
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* |
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* @return OAuthDecorator OAuth ready decorated Request |
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*/ |
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private function authenticateRequest(RequestInterface $request) |
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{ |
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$authenticatedRequest = new OAuthDecorator($request); |
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$authenticatedRequest->setAccessToken($this->authenticator->getAccessToken()); |
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$authenticatedRequest->addAuthentication(); |
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return $authenticatedRequest; |
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} |
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/** |
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* Sends the actual request. |
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* |
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* @param RequestInterface $request |
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* |
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* @return Response Response object created from raw response |
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* |
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* @throws ClientException Thrown when response could not be created. |
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*/ |
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private function sendRequest(RequestInterface $request) |
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{ |
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return $this->client->makeCall( |
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$request->getFullUrl(), |
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$this->addDefaultHeaders($request->getHeaders()), |
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$request->getOptions() |
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); |
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} |
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/** |
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* Refreshes the token via then authenticator. |
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* |
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* @param RequestInterface $request |
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* |
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* @return void |
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*/ |
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private function getNewToken(RequestInterface $request) |
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{ |
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try { |
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$this->authenticator->setBaseUrl($request->getBaseUrl()); |
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$this->authenticator->getAuthenticationTokens(); |
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} catch (AuthenticationException $e) { |
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throw new AccessDeniedException('Could not authenticate against API.', $e->getCode(), $e); |
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} |
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return; |
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} |
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/** |
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* Adds default headers to the headers per request, only if the key |
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* cannot not be found in the headers per request. |
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* |
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* @param array $headers |
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* |
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* @return array |
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*/ |
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private function addDefaultHeaders($headers) |
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{ |
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foreach ($this->headers as $key => $value) { |
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if (!isset($headers[$key])) { |
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$headers[$key] = $value; |
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} |
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} |
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return $headers; |
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} |
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} |
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superdesk /
contentapi-sdk-php
