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<?php |
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namespace Bobbyshaw\WatsonVisualRecognition\Message; |
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use Bobbyshaw\WatsonVisualRecognition\Exceptions\AuthException; |
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use GuzzleHttp\Exception\ClientException; |
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use GuzzleHttp\Psr7\MultipartStream; |
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use GuzzleHttp\Psr7\Request; |
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use InvalidArgumentException; |
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/** |
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* Class CreateClassifierRequest |
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* @package Bobbyshaw\WatsonVisualRecognition\Message |
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*/ |
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class CreateClassifierRequest extends AbstractRequest |
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{ |
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const CLASSIFIERS_PATH = 'classifiers/'; |
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const ALLOWED_FILE_TYPES = ['.zip']; |
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public function getData() |
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{ |
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$data = parent::getData(); |
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$data['positive_examples'] = $this->getPositiveExamples(); |
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$data['negative_examples'] = $this->getNegativeExamples(); |
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$data['name'] = $this->getName(); |
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return $data; |
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} |
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/** |
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* Send HTTP request to create a new classifier |
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* |
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* @param array $data |
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* @return ClassifierResponse |
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* @throws AuthException |
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* @throws \Exception |
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*/ |
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public function sendData($data) |
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{ |
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$this->validateData($data); |
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$params = [ |
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[ |
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'name' => 'positive_examples', |
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'contents' => fopen($data['positive_examples'], 'r'), |
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'filename' => $data['positive_examples'] |
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], |
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[ |
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'name' => 'negative_examples', |
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'contents' => fopen($data['negative_examples'], 'r'), |
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'filename' => $data['negative_examples'] |
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], |
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[ |
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'name' => 'name', |
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'contents' => $data['name'] |
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] |
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]; |
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$multipartStream = new MultipartStream($params); |
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$request = new Request( |
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'POST', |
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$this->getApiUrl(static::CLASSIFIERS_PATH) . '?' . http_build_query(['version' => $data['version']]), |
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['Authorization' => 'Basic ' . base64_encode($data['username'] . ':' . $data['password'])], |
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$multipartStream |
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); |
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try { |
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$response = $this->httpClient->send($request); |
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if ($response->getStatusCode() != 200) { |
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throw new \Exception($response->getBody()->getContents(), $response->getStatusCode()); |
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} |
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} catch (ClientException $e) { |
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if ($e->getCode() == 401) { |
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throw new AuthException('Invalid credentials provided'); |
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} |
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} |
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return $this->response = new ClassifierResponse($this, $response->getBody()); |
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} |
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/** |
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* Validate Data |
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* |
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* @param $data |
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* @return bool |
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* @throws InvalidArgumentException |
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*/ |
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protected function validateData($data) |
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{ |
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if (!in_array(substr($data['positive_examples'], -4), static::ALLOWED_FILE_TYPES) |
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|| !in_array(substr($data['negative_examples'], -4), static::ALLOWED_FILE_TYPES)) { |
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throw new InvalidArgumentException( |
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'Example files needs to be one of the following types: ' . implode(', ', static::ALLOWED_FILE_TYPES) |
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); |
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} |
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return true; |
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} |
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} |
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bobbyshaw /
watson-visual-recognition-php
