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<?php |
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/* |
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* Copyright 2010 Google Inc. |
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* |
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* Licensed under the Apache License, Version 2.0 (the "License"); |
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* you may not use this file except in compliance with the License. |
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* You may obtain a copy of the License at |
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* |
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* http://www.apache.org/licenses/LICENSE-2.0 |
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* |
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* Unless required by applicable law or agreed to in writing, software |
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* distributed under the License is distributed on an "AS IS" BASIS, |
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
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* See the License for the specific language governing permissions and |
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* limitations under the License. |
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*/ |
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|
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require_once 'Google/Client.php'; |
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require_once 'Google/Http/Request.php'; |
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require_once 'Google/Service/Exception.php'; |
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require_once 'Google/Utils/URITemplate.php'; |
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|
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/** |
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* This class implements the RESTful transport of apiServiceRequest()'s |
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* |
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* @author Chris Chabot <chabotc@google.com> |
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* @author Chirag Shah <chirags@google.com> |
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*/ |
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class Google_Http_REST |
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{ |
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/** |
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* Executes a Google_Http_Request |
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* |
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* @param Google_Client $client |
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* @param Google_Http_Request $req |
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* @return array decoded result |
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* @throws Google_Service_Exception on server side error (ie: not authenticated, |
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* invalid or malformed post body, invalid url) |
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*/ |
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public static function execute(Google_Client $client, Google_Http_Request $req) |
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{ |
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$httpRequest = $client->getIo()->makeRequest($req); |
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$httpRequest->setExpectedClass($req->getExpectedClass()); |
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return self::decodeHttpResponse($httpRequest); |
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} |
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|
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/** |
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* Decode an HTTP Response. |
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* @static |
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* @throws Google_Service_Exception |
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* @param Google_Http_Request $response The http response to be decoded. |
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* @return mixed|null |
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*/ |
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public static function decodeHttpResponse($response) |
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{ |
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$code = $response->getResponseHttpCode(); |
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$body = $response->getResponseBody(); |
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$decoded = null; |
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|
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if ((intVal($code)) >= 300) { |
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$decoded = json_decode($body, true); |
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$err = 'Error calling ' . $response->getRequestMethod() . ' ' . $response->getUrl(); |
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if (isset($decoded['error']) && |
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isset($decoded['error']['message']) && |
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isset($decoded['error']['code'])) { |
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// if we're getting a json encoded error definition, use that instead of the raw response |
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// body for improved readability |
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$err .= ": ({$decoded['error']['code']}) {$decoded['error']['message']}"; |
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} else { |
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$err .= ": ($code) $body"; |
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} |
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|
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$errors = null; |
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// Specific check for APIs which don't return error details, such as Blogger. |
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if (isset($decoded['error']) && isset($decoded['error']['errors'])) { |
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$errors = $decoded['error']['errors']; |
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} |
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|
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throw new Google_Service_Exception($err, $code, null, $errors); |
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} |
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|
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// Only attempt to decode the response, if the response code wasn't (204) 'no content' |
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if ($code != '204') { |
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$decoded = json_decode($body, true); |
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if ($decoded === null || $decoded === "") { |
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throw new Google_Service_Exception("Invalid json in service response: $body"); |
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} |
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|
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if ($response->getExpectedClass()) { |
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$class = $response->getExpectedClass(); |
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$decoded = new $class($decoded); |
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} |
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} |
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return $decoded; |
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} |
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|
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/** |
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* Parse/expand request parameters and create a fully qualified |
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* request uri. |
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* @static |
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* @param string $servicePath |
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* @param string $restPath |
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* @param array $params |
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* @return string $requestUrl |
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*/ |
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public static function createRequestUri($servicePath, $restPath, $params) |
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{ |
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$requestUrl = $servicePath . $restPath; |
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$uriTemplateVars = array(); |
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$queryVars = array(); |
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foreach ($params as $paramName => $paramSpec) { |
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if ($paramSpec['type'] == 'boolean') { |
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$paramSpec['value'] = ($paramSpec['value']) ? 'true' : 'false'; |
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} |
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if ($paramSpec['location'] == 'path') { |
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$uriTemplateVars[$paramName] = $paramSpec['value']; |
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} else if ($paramSpec['location'] == 'query') { |
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if (isset($paramSpec['repeated']) && is_array($paramSpec['value'])) { |
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foreach ($paramSpec['value'] as $value) { |
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$queryVars[] = $paramName . '=' . rawurlencode($value); |
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} |
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} else { |
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$queryVars[] = $paramName . '=' . rawurlencode($paramSpec['value']); |
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} |
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} |
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} |
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|
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if (count($uriTemplateVars)) { |
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$uriTemplateParser = new Google_Utils_URITemplate(); |
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$requestUrl = $uriTemplateParser->parse($requestUrl, $uriTemplateVars); |
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} |
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|
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if (count($queryVars)) { |
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$requestUrl .= '?' . implode($queryVars, '&'); |
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} |
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|
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return $requestUrl; |
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} |
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} |
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|
