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<?php declare (strict_types=1); |
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namespace OpenStack\Common\Api; |
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/** |
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* This class represents an OpenStack API operation. It encapsulates most aspects of the REST operation: its HTTP |
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* method, the URL path, its top-level JSON key, and all of its {@see Parameter} objects. |
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* |
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* An operation not only represents a remote operation, but it also provides the mechanism for executing it |
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* over HTTP. To do this, it uses a {@see ClientInterface} that allows a {@see GuzzleHttp\Message\Request} |
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* to be created from the user values provided. Once this request is assembled, it is then sent to the |
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* remote API and the response is returned to whoever first invoked the Operation class. |
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* |
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* @package OpenStack\Common\Api |
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*/ |
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class Operation |
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{ |
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/** @var string The HTTP method */ |
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private $method; |
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/** @var string The URL path */ |
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private $path; |
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/** @var string The top-level JSON key */ |
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private $jsonKey; |
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/** @var []Parameter The parameters of this operation */ |
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private $params; |
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/** |
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* @param array $definition The data definition (in array form) that will populate this |
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* operation. Usually this is retrieved from an {@see ApiInterface} |
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* object method. |
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*/ |
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public function __construct(array $definition) |
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{ |
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$this->method = $definition['method']; |
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$this->path = $definition['path']; |
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if (isset($definition['jsonKey'])) { |
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$this->jsonKey = $definition['jsonKey']; |
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} |
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$this->params = self::toParamArray($definition['params']); |
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} |
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/** |
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* @return string |
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*/ |
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public function getPath(): string |
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{ |
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return $this->path; |
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} |
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/** |
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* @return string |
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*/ |
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public function getMethod(): string |
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{ |
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return $this->method; |
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} |
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/** |
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* Indicates whether this operation supports a parameter. |
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* |
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* @param $key The name of a parameter |
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* |
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* @return bool |
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*/ |
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public function hasParam(string $key): bool |
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{ |
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return isset($this->params[$key]); |
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} |
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/** |
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* @param $name |
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* |
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* @return Parameter |
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*/ |
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public function getParam(string $name) |
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{ |
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return isset($this->params[$name]) ? $this->params[$name] : null; |
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} |
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/** |
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* @return string |
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*/ |
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public function getJsonKey(): string |
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{ |
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return $this->jsonKey ?: ''; |
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} |
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/** |
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* A convenience method that will take a generic array of data and convert it into an array of |
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* {@see Parameter} objects. |
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* |
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* @param array $data A generic data array |
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* |
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* @return array |
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*/ |
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public static function toParamArray(array $data): array |
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{ |
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$params = []; |
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foreach ($data as $name => $param) { |
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$params[$name] = new Parameter($param + ['name' => $name]); |
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} |
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return $params; |
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} |
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/** |
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* This method will validate all of the user-provided values and throw an exception if any |
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* failures are detected. This is useful for basic sanity-checking before a request is |
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* serialized and sent to the API. |
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* |
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* @param array $userValues The user-defined values |
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* |
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* @return bool TRUE if validation passes |
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* @throws \Exception If validate fails |
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*/ |
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public function validate(array $userValues): bool |
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{ |
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foreach ($this->params as $paramName => $param) { |
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if (array_key_exists($paramName, $userValues)) { |
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$param->validate($userValues[$paramName]); |
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} elseif ($param->isRequired()) { |
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throw new \Exception(sprintf('"%s" is a required option, but it was not provided', $paramName)); |
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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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php-opencloud /
openstack
