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Diffstat (limited to 'server/vendor/php-opencloud/common/src/Common/Api/Parameter.php')
| -rw-r--r-- | server/vendor/php-opencloud/common/src/Common/Api/Parameter.php | 389 |
1 files changed, 389 insertions, 0 deletions
diff --git a/server/vendor/php-opencloud/common/src/Common/Api/Parameter.php b/server/vendor/php-opencloud/common/src/Common/Api/Parameter.php new file mode 100644 index 0000000..97330a4 --- /dev/null +++ b/server/vendor/php-opencloud/common/src/Common/Api/Parameter.php @@ -0,0 +1,389 @@ +<?php + +namespace OpenCloud\Common\Api; + +use OpenCloud\Common\HydratorStrategyTrait; + +/** + * Represents an individual request parameter in a RESTful operation. A parameter can take on many forms: + * in a URL path, in a URL query, in a JSON body, and in a HTTP header. It is worth documenting brifly each + * variety of parameter: + * + * * Header parameters are those which populate a HTTP header in a request. Header parameters can have + * aliases; for example, a user-facing name of "Foo" can be sent over the wire as "X-Foo_Bar", as defined + * by ``sentAs``. Prefixes can also be used. + * + * * Query parameters are those which populate a URL query parameter. The value is therefore usually + * confined to a string. + * + * * JSON parameters are those which populate a JSON request body. These are the most complex variety + * of Parameter, since there are so many different ways a JSON document can be constructed. The SDK + * supports deep-nesting according to a XPath syntax; for more information, see {@see \OpenCloud\Common\JsonPath}. + * Nested object and array properties are also supported since JSON is a recursive data type. What + * this means is that a Parameter can have an assortment of child Parameters, one for each object + * property or array element. + * + * * Raw parameters are those which populate a non-JSON request body. This is typically used for + * uploading payloads (such as Swift object data) to a remote API. + * + * * Path parameters are those which populate a URL path. They are serialized according to URL + * placeholders. + * + * @package OpenCloud\Common\Api + */ +class Parameter +{ + use HydratorStrategyTrait; + + const DEFAULT_LOCATION = 'json'; + + /** + * The human-friendly name of the parameter. This is what the user will input. + * + * @var string + */ + private $name; + + /** + * The alias for this parameter. Although the user will always interact with the human-friendly $name property, + * the $sentAs is what's used over the wire. + * + * @var string + */ + private $sentAs; + + /** + * For array parameters (for example, an array of security group names when creating a server), each array element + * will need to adhere to a common schema. For the aforementioned example, each element will need to be a string. + * For more complicated parameters, you might be validated an array of complicated objects. + * + * @var Parameter + */ + private $itemSchema; + + /** + * For object parameters, each property will need to adhere to a specific schema. For every property in the + * object, it has its own schema - meaning that this property is a hash of name/schema pairs. + * + * The *only* exception to this rule is for metadata parameters, which are arbitrary key/value pairs. Since it does + * not make sense to have a schema for each metadata key, a common schema is use for every one. So instead of this + * property being a hash of schemas, it is a single Parameter object instead. This single Parameter schema will + * then be applied to each metadata key provided. + * + * @var []Parameter|Parameter + */ + private $properties; + + /** + * The value's PHP type which this parameter represents; either "string", "bool", "object", "array", "NULL". + * + * @var string + */ + private $type; + + /** + * Indicates whether this parameter requires a value from the user. + * + * @var bool + */ + private $required; + + /** + * The location in the HTTP request where this parameter will populate; either "header", "url", "query", "raw" or + * "json". + * + * @var string + */ + private $location; + + /** + * Relevant to "json" location parameters only. This property allows for deep nesting through the use of + * {@see OpenCloud\Common\JsonPath}. + * + * @var string + */ + private $path; + + /** + * Allows for the prefixing of parameter names. + * + * @var string + */ + private $prefix; + + /** + * The enum values for which this param is restricted. + * + * @var array + */ + private $enum; + + /** + * @param array $data + */ + public function __construct(array $data) + { + $this->hydrate($data); + + $this->required = (bool)$this->required; + + $this->stockLocation($data); + $this->stockItemSchema($data); + $this->stockProperties($data); + } + + private function stockLocation(array $data) + { + $this->location = isset($data['location']) ? $data['location'] : self::DEFAULT_LOCATION; + + if (!AbstractParams::isSupportedLocation($this->location)) { + throw new \RuntimeException(sprintf("%s is not a permitted location", $this->location)); + } + } + + private function stockItemSchema(array $data) + { + if (isset($data['items'])) { + $this->itemSchema = new Parameter($data['items']); + } + } + + private function stockProperties(array $data) + { + if (isset($data['properties'])) { + if (stripos($this->name, 'metadata') !== false) { + $this->properties = new Parameter($data['properties']); + } else { + foreach ($data['properties'] as $name => $property) { + $this->properties[$name] = new Parameter($property + ['name' => $name]); + } + } + } + } + + /** + * Retrieve the name that will be used over the wire. + * + * @return string + */ + public function getName() + { + return $this->sentAs ?: $this->name; + } + + /** + * Indicates whether the user must provide a value for this parameter. + * + * @return bool + */ + public function isRequired() + { + return $this->required === true; + } + + /** + * Validates a given user value and checks whether it passes basic sanity checking, such as types. + * + * @param $userValues The value provided by the user + * + * @return bool TRUE if the validation passes + * @throws \Exception If validation fails + */ + public function validate($userValues) + { + $this->validateEnums($userValues); + $this->validateType($userValues); + + if ($this->isArray()) { + $this->validateArray($userValues); + } elseif ($this->isObject()) { + $this->validateObject($userValues); + } + + return true; + } + + private function validateEnums($userValues) + { + if (!empty($this->enum) && $this->type == 'string' && !in_array($userValues, $this->enum)) { + throw new \Exception(sprintf( + 'The only permitted values are %s. You provided %s', implode(', ', $this->enum), print_r($userValues, true) + )); + } + } + + private function validateType($userValues) + { + if (!$this->hasCorrectType($userValues)) { + throw new \Exception(sprintf( + 'The key provided "%s" has the wrong value type. You provided %s (%s) but was expecting %s', + $this->name, print_r($userValues, true), gettype($userValues), $this->type + )); + } + } + + private function validateArray($userValues) + { + foreach ($userValues as $userValue) { + $this->itemSchema->validate($userValue); + } + } + + private function validateObject($userValues) + { + foreach ($userValues as $key => $userValue) { + $property = $this->getNestedProperty($key); + $property->validate($userValue); + } + } + + /** + * Internal method which retrieves a nested property for object parameters. + * + * @param $key The name of the child parameter + * + * @returns Parameter + * @throws \Exception + */ + private function getNestedProperty($key) + { + if (stripos($this->name, 'metadata') !== false && $this->properties instanceof Parameter) { + return $this->properties; + } elseif (isset($this->properties[$key])) { + return $this->properties[$key]; + } else { + throw new \Exception(sprintf('The key provided "%s" is not defined', $key)); + } + } + + /** + * Internal method which indicates whether the user value is of the same type as the one expected + * by this parameter. + * + * @param $userValue The value being checked + * + * @return bool + */ + private function hasCorrectType($userValue) + { + // Helper fn to see whether an array is associative (i.e. a JSON object) + $isAssociative = function ($value) { + return is_array($value) && array_keys($value) !== range(0, count($value) - 1); + }; + + // For params defined as objects, we'll let the user get away with + // passing in an associative array - since it's effectively a hash + if ($this->type == 'object' && $isAssociative($userValue)) { + return true; + } + + if (class_exists($this->type) || interface_exists($this->type)) { + return is_a($userValue, $this->type); + } + + if (!$this->type) { + return true; + } + + return gettype($userValue) == $this->type; + } + + /** + * Indicates whether this parameter represents an array type + * + * @return bool + */ + public function isArray() + { + return $this->type == 'array' && $this->itemSchema instanceof Parameter; + } + + /** + * Indicates whether this parameter represents an object type + * + * @return bool + */ + public function isObject() + { + return $this->type == 'object' && !empty($this->properties); + } + + public function getLocation() + { + return $this->location; + } + + /** + * Verifies whether the given location matches the parameter's location. + * + * @param $value + * + * @return bool + */ + public function hasLocation($value) + { + return $this->location == $value; + } + + /** + * Retrieves the parameter's path. + * + * @return string|null + */ + public function getPath() + { + return $this->path; + } + + /** + * Retrieves the common schema that an array parameter applies to all its child elements. + * + * @return Parameter + */ + public function getItemSchema() + { + return $this->itemSchema; + } + + /** + * Sets the name of the parameter to a new value + * + * @param string $name + */ + public function setName($name) + { + $this->name = $name; + } + + /** + * Retrieves the child parameter for an object parameter. + * + * @param string $name The name of the child property + * + * @return null|Parameter + */ + public function getProperty($name) + { + if ($this->properties instanceof Parameter) { + $this->properties->setName($name); + return $this->properties; + } + + return isset($this->properties[$name]) ? $this->properties[$name] : null; + } + + /** + * Retrieves the prefix for a parameter, if any. + * + * @return string|null + */ + public function getPrefix() + { + return $this->prefix; + } + + public function getPrefixedName() + { + return $this->prefix . $this->getName(); + } +} |
