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Differences Between: [Versions 310 and 402] [Versions 310 and 403]

   1  <?php
   2  /*
   3   * Copyright 2010 Google Inc.
   4   *
   5   * Licensed under the Apache License, Version 2.0 (the "License");
   6   * you may not use this file except in compliance with the License.
   7   * You may obtain a copy of the License at
   8   *
   9   *     http://www.apache.org/licenses/LICENSE-2.0
  10   *
  11   * Unless required by applicable law or agreed to in writing, software
  12   * distributed under the License is distributed on an "AS IS" BASIS,
  13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14   * See the License for the specific language governing permissions and
  15   * limitations under the License.
  16   */
  17  
  18  if (!class_exists('Google_Client')) {
  19    require_once dirname(__FILE__) . '/../autoload.php';
  20  }
  21  
  22  /**
  23   * This class implements the RESTful transport of apiServiceRequest()'s
  24   */
  25  class Google_Http_REST
  26  {
  27    /**
  28     * Executes a Google_Http_Request and (if applicable) automatically retries
  29     * when errors occur.
  30     *
  31     * @param Google_Client $client
  32     * @param Google_Http_Request $req
  33     * @return array decoded result
  34     * @throws Google_Service_Exception on server side error (ie: not authenticated,
  35     *  invalid or malformed post body, invalid url)
  36     */
  37    public static function execute(Google_Client $client, Google_Http_Request $req)
  38    {
  39      $runner = new Google_Task_Runner(
  40          $client,
  41          sprintf('%s %s', $req->getRequestMethod(), $req->getUrl()),
  42          array(get_class(), 'doExecute'),
  43          array($client, $req)
  44      );
  45  
  46      return $runner->run();
  47    }
  48  
  49    /**
  50     * Executes a Google_Http_Request
  51     *
  52     * @param Google_Client $client
  53     * @param Google_Http_Request $req
  54     * @return array decoded result
  55     * @throws Google_Service_Exception on server side error (ie: not authenticated,
  56     *  invalid or malformed post body, invalid url)
  57     */
  58    public static function doExecute(Google_Client $client, Google_Http_Request $req)
  59    {
  60      $httpRequest = $client->getIo()->makeRequest($req);
  61      $httpRequest->setExpectedClass($req->getExpectedClass());
  62      return self::decodeHttpResponse($httpRequest, $client);
  63    }
  64  
  65    /**
  66     * Decode an HTTP Response.
  67     * @static
  68     * @throws Google_Service_Exception
  69     * @param Google_Http_Request $response The http response to be decoded.
  70     * @param Google_Client $client
  71     * @return mixed|null
  72     */
  73    public static function decodeHttpResponse($response, Google_Client $client = null)
  74    {
  75      $code = $response->getResponseHttpCode();
  76      $body = $response->getResponseBody();
  77      $decoded = null;
  78  
  79      if ((intVal($code)) >= 300) {
  80        $decoded = json_decode($body, true);
  81        $err = 'Error calling ' . $response->getRequestMethod() . ' ' . $response->getUrl();
  82        if (isset($decoded['error']) &&
  83            isset($decoded['error']['message'])  &&
  84            isset($decoded['error']['code'])) {
  85          // if we're getting a json encoded error definition, use that instead of the raw response
  86          // body for improved readability
  87          $err .= ": ({$decoded['error']['code']}) {$decoded['error']['message']}";
  88        } else {
  89          $err .= ": ($code) $body";
  90        }
  91  
  92        $errors = null;
  93        // Specific check for APIs which don't return error details, such as Blogger.
  94        if (isset($decoded['error']) && isset($decoded['error']['errors'])) {
  95          $errors = $decoded['error']['errors'];
  96        }
  97  
  98        $map = null;
  99        if ($client) {
 100          $client->getLogger()->error(
 101              $err,
 102              array('code' => $code, 'errors' => $errors)
 103          );
 104  
 105          $map = $client->getClassConfig(
 106              'Google_Service_Exception',
 107              'retry_map'
 108          );
 109        }
 110        throw new Google_Service_Exception($err, $code, null, $errors, $map);
 111      }
 112  
 113      // Only attempt to decode the response, if the response code wasn't (204) 'no content'
 114      if ($code != '204') {
 115        if ($response->getExpectedRaw()) {
 116          return $body;
 117        }
 118        
 119        $decoded = json_decode($body, true);
 120        if ($decoded === null || $decoded === "") {
 121          $error = "Invalid json in service response: $body";
 122          if ($client) {
 123            $client->getLogger()->error($error);
 124          }
 125          throw new Google_Service_Exception($error);
 126        }
 127  
 128        if ($response->getExpectedClass()) {
 129          $class = $response->getExpectedClass();
 130          $decoded = new $class($decoded);
 131        }
 132      }
 133      return $decoded;
 134    }
 135  
 136    /**
 137     * Parse/expand request parameters and create a fully qualified
 138     * request uri.
 139     * @static
 140     * @param string $servicePath
 141     * @param string $restPath
 142     * @param array $params
 143     * @return string $requestUrl
 144     */
 145    public static function createRequestUri($servicePath, $restPath, $params)
 146    {
 147      $requestUrl = $servicePath . $restPath;
 148      $uriTemplateVars = array();
 149      $queryVars = array();
 150      foreach ($params as $paramName => $paramSpec) {
 151        if ($paramSpec['type'] == 'boolean') {
 152          $paramSpec['value'] = ($paramSpec['value']) ? 'true' : 'false';
 153        }
 154        if ($paramSpec['location'] == 'path') {
 155          $uriTemplateVars[$paramName] = $paramSpec['value'];
 156        } else if ($paramSpec['location'] == 'query') {
 157          if (isset($paramSpec['repeated']) && is_array($paramSpec['value'])) {
 158            foreach ($paramSpec['value'] as $value) {
 159              $queryVars[] = $paramName . '=' . rawurlencode(rawurldecode($value));
 160            }
 161          } else {
 162            $queryVars[] = $paramName . '=' . rawurlencode(rawurldecode($paramSpec['value']));
 163          }
 164        }
 165      }
 166  
 167      if (count($uriTemplateVars)) {
 168        $uriTemplateParser = new Google_Utils_URITemplate();
 169        $requestUrl = $uriTemplateParser->parse($requestUrl, $uriTemplateVars);
 170      }
 171  
 172      if (count($queryVars)) {
 173        $requestUrl .= '?' . implode('&', $queryVars);
 174      }
 175  
 176      return $requestUrl;
 177    }
 178  }