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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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use GuzzleHttp\Psr7\Request; |
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/** |
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* Implements the actual methods/resources of the discovered Google API using magic function |
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* calling overloading (__call()), which on call will see if the method name (plus.activities.list) |
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* is available in this service, and if so construct an apiHttpRequest representing it. |
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* |
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*/ |
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class Google_Service_Resource |
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{ |
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// Valid query parameters that work, but don't appear in discovery. |
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private $stackParameters = array( |
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'alt' => array('type' => 'string', 'location' => 'query'), |
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'fields' => array('type' => 'string', 'location' => 'query'), |
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'trace' => array('type' => 'string', 'location' => 'query'), |
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'userIp' => array('type' => 'string', 'location' => 'query'), |
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'quotaUser' => array('type' => 'string', 'location' => 'query'), |
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'data' => array('type' => 'string', 'location' => 'body'), |
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'mimeType' => array('type' => 'string', 'location' => 'header'), |
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'uploadType' => array('type' => 'string', 'location' => 'query'), |
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'mediaUpload' => array('type' => 'complex', 'location' => 'query'), |
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'prettyPrint' => array('type' => 'string', 'location' => 'query'), |
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); |
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/** @var string $rootUrl */ |
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private $rootUrl; |
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/** @var Google_Client $client */ |
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private $client; |
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/** @var string $serviceName */ |
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private $serviceName; |
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/** @var string $servicePath */ |
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private $servicePath; |
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/** @var string $resourceName */ |
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private $resourceName; |
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/** @var array $methods */ |
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private $methods; |
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public function __construct($service, $serviceName, $resourceName, $resource) |
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{ |
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$this->rootUrl = $service->rootUrl; |
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$this->client = $service->getClient(); |
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$this->servicePath = $service->servicePath; |
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$this->serviceName = $serviceName; |
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$this->resourceName = $resourceName; |
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$this->methods = is_array($resource) && isset($resource['methods']) ? |
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$resource['methods'] : |
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array($resourceName => $resource); |
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} |
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/** |
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* TODO: This function needs simplifying. |
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* @param $name |
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* @param $arguments |
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* @param $expectedClass - optional, the expected class name |
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* @return Google_Http_Request|expectedClass |
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* @throws Google_Exception |
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*/ |
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public function call($name, $arguments, $expectedClass = null) |
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{ |
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if (! isset($this->methods[$name])) { |
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$this->client->getLogger()->error( |
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'Service method unknown', |
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array( |
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'service' => $this->serviceName, |
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'resource' => $this->resourceName, |
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'method' => $name |
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) |
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); |
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throw new Google_Exception( |
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"Unknown function: " . |
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"{$this->serviceName}->{$this->resourceName}->{$name}()" |
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); |
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} |
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$method = $this->methods[$name]; |
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$parameters = $arguments[0]; |
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// postBody is a special case since it's not defined in the discovery |
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// document as parameter, but we abuse the param entry for storing it. |
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$postBody = null; |
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if (isset($parameters['postBody'])) { |
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if ($parameters['postBody'] instanceof Google_Model) { |
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// In the cases the post body is an existing object, we want |
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// to use the smart method to create a simple object for |
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// for JSONification. |
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$parameters['postBody'] = $parameters['postBody']->toSimpleObject(); |
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} else if (is_object($parameters['postBody'])) { |
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// If the post body is another kind of object, we will try and |
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// wrangle it into a sensible format. |
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$parameters['postBody'] = |
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$this->convertToArrayAndStripNulls($parameters['postBody']); |
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} |
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$postBody = (array) $parameters['postBody']; |
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unset($parameters['postBody']); |
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} |
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// TODO: optParams here probably should have been |
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// handled already - this may well be redundant code. |
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if (isset($parameters['optParams'])) { |
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$optParams = $parameters['optParams']; |
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unset($parameters['optParams']); |
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$parameters = array_merge($parameters, $optParams); |
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} |
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if (!isset($method['parameters'])) { |
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$method['parameters'] = array(); |
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} |
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$method['parameters'] = array_merge( |
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$this->stackParameters, |
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$method['parameters'] |
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); |
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foreach ($parameters as $key => $val) { |
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if ($key != 'postBody' && ! isset($method['parameters'][$key])) { |
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$this->client->getLogger()->error( |
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'Service parameter unknown', |
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array( |
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'service' => $this->serviceName, |
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'resource' => $this->resourceName, |
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'method' => $name, |
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'parameter' => $key |
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) |
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); |
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throw new Google_Exception("($name) unknown parameter: '$key'"); |
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} |
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} |
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foreach ($method['parameters'] as $paramName => $paramSpec) { |
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if (isset($paramSpec['required']) && |
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$paramSpec['required'] && |
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! isset($parameters[$paramName]) |
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) { |
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$this->client->getLogger()->error( |
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'Service parameter missing', |
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array( |
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'service' => $this->serviceName, |
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'resource' => $this->resourceName, |
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'method' => $name, |
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'parameter' => $paramName |
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) |
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); |
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throw new Google_Exception("($name) missing required param: '$paramName'"); |
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} |
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if (isset($parameters[$paramName])) { |
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$value = $parameters[$paramName]; |
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$parameters[$paramName] = $paramSpec; |
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$parameters[$paramName]['value'] = $value; |
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unset($parameters[$paramName]['required']); |
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} else { |
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// Ensure we don't pass nulls. |
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unset($parameters[$paramName]); |
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} |
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} |
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$this->client->getLogger()->info( |
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'Service Call', |
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array( |
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'service' => $this->serviceName, |
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'resource' => $this->resourceName, |
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'method' => $name, |
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'arguments' => $parameters, |
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) |
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); |
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// build the service uri |
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$url = $this->createRequestUri( |
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$method['path'], |
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$parameters |
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); |
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// NOTE: because we're creating the request by hand, |
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// and because the service has a rootUrl property |
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// the "base_uri" of the Http Client is not accounted for |
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$request = new Request( |
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$method['httpMethod'], |
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$url, |
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['content-type' => 'application/json'], |
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$postBody ? json_encode($postBody) : '' |
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); |
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// support uploads |
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if (isset($parameters['data'])) { |
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$mimeType = isset($parameters['mimeType']) |
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? $parameters['mimeType']['value'] |
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: 'application/octet-stream'; |
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$data = $parameters['data']['value']; |
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$upload = new Google_Http_MediaFileUpload($this->client, $request, $mimeType, $data); |
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// pull down the modified request |
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$request = $upload->getRequest(); |
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} |
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// if this is a media type, we will return the raw response |
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// rather than using an expected class |
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if (isset($parameters['alt']) && $parameters['alt']['value'] == 'media') { |
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$expectedClass = null; |
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} |
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// if the client is marked for deferring, rather than |
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// execute the request, return the response |
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if ($this->client->shouldDefer()) { |
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// @TODO find a better way to do this |
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$request = $request |
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->withHeader('X-Php-Expected-Class', $expectedClass); |
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return $request; |
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} |
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return $this->client->execute($request, $expectedClass); |
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} |
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protected function convertToArrayAndStripNulls($o) |
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{ |
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$o = (array) $o; |
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foreach ($o as $k => $v) { |
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if ($v === null) { |
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unset($o[$k]); |
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} elseif (is_object($v) || is_array($v)) { |
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$o[$k] = $this->convertToArrayAndStripNulls($o[$k]); |
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} |
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} |
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return $o; |
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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 $restPath |
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* @param array $params |
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* @return string $requestUrl |
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*/ |
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public function createRequestUri($restPath, $params) |
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{ |
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// Override the default servicePath address if the $restPath use a / |
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if ('/' == substr($restPath, 0, 1)) { |
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$requestUrl = substr($restPath, 1); |
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} else { |
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$requestUrl = $this->servicePath . $restPath; |
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} |
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// code for leading slash |
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if ($this->rootUrl) { |
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if ('/' !== substr($this->rootUrl, -1) && '/' !== substr($requestUrl, 0, 1)) { |
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$requestUrl = '/' . $requestUrl; |
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} |
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$requestUrl = $this->rootUrl . $requestUrl; |
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} |
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$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 (is_array($paramSpec['value'])) { |
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foreach ($paramSpec['value'] as $value) { |
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$queryVars[] = $paramName . '=' . rawurlencode(rawurldecode($value)); |
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} |
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} else { |
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$queryVars[] = $paramName . '=' . rawurlencode(rawurldecode($paramSpec['value'])); |
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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, $uriTemplateVars); |
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} |
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if (count($queryVars)) { |
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$requestUrl .= '?' . implode($queryVars, '&'); |
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} |
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return $requestUrl; |
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} |
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} |
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