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<?php |
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namespace PhpJsonRpc\Server; |
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use PhpJsonRpc\Common\Chain\Chain; |
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use PhpJsonRpc\Common\Chain\Container; |
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use PhpJsonRpc\Core\Call\AbstractCall; |
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use PhpJsonRpc\Core\Call\CallUnit; |
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use PhpJsonRpc\Core\Call\CallError; |
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use PhpJsonRpc\Core\Call\CallNotification; |
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use PhpJsonRpc\Core\CallSpecifier; |
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use PhpJsonRpc\Error\InvalidRequestException; |
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use PhpJsonRpc\Error\ParseErrorException; |
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/** |
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* Request parser |
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*/ |
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class RequestParser |
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{ |
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/** |
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* @var Chain |
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*/ |
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private $preParse; |
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/** |
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* @var Chain |
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*/ |
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private $postParse; |
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/** |
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* RequestParser constructor. |
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*/ |
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public function __construct() |
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{ |
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$this->preParse = Chain::createBase(); |
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$this->postParse = Chain::createBase(); |
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} |
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/** |
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* Parse request data |
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* |
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* @param string $data |
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* |
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* @return CallSpecifier |
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*/ |
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public function parse(string $data): CallSpecifier |
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{ |
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$payload = @json_decode($data, true); |
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if (!is_array($payload)) { |
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return new CallSpecifier([new CallError(new ParseErrorException())], true); |
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} |
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$units = []; |
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// Single request |
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if ($this->isSingleRequest($payload)) { |
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$units[] = $this->decodeCall($payload); |
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return new CallSpecifier($units, true); |
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} |
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// Batch request |
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/** @var array $payload */ |
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foreach ($payload as $record) { |
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$units[] = $this->decodeCall($record); |
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} |
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return new CallSpecifier($units, false); |
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} |
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/** |
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* Get pre-parse chain |
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* |
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* @return Chain |
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*/ |
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public function onPreParse(): Chain |
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{ |
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return $this->preParse; |
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} |
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/** |
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* Get post-parse chain |
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* |
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* @return Chain |
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*/ |
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public function onPostParse(): Chain |
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{ |
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return $this->postParse; |
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} |
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/** |
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* @param $record |
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* |
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* @return AbstractCall |
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*/ |
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private function decodeCall($record): AbstractCall |
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{ |
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$record = $this->preParse($record); |
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if ($this->isValidCall($record)) { |
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$unit = new CallUnit($record['id'], $record['method'], $record['params'] ?? []); |
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} elseif ($this->isValidNotification($record)) { |
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$unit = new CallNotification($record['method'], $record['params']); |
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} else { |
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$unit = new CallError(new InvalidRequestException()); |
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} |
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return $this->postParse($unit); |
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} |
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/** |
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* @param array $payload |
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* |
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* @return bool |
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*/ |
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private function isSingleRequest(array $payload): bool |
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{ |
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return array_keys($payload) !== range(0, count($payload) - 1); |
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} |
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/** |
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* @param array $payload |
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* |
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* @return bool |
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*/ |
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View Code Duplication |
private function isValidCall($payload): bool |
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{ |
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if (!is_array($payload)) { |
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return false; |
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} |
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$headerValid = array_key_exists('jsonrpc', $payload) && $payload['jsonrpc'] === '2.0'; |
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$methodValid = array_key_exists('method', $payload) && is_string($payload['method']); |
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$idValid = array_key_exists('id', $payload); |
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// This member MAY be omitted |
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$paramsValid = true; |
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if (array_key_exists('params', $payload) && !is_array($payload['params'])) { |
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$paramsValid = false; |
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} |
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return $headerValid && $methodValid && $paramsValid && $idValid; |
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} |
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/** |
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* @param array $payload |
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* |
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* @return bool |
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*/ |
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View Code Duplication |
private function isValidNotification($payload): bool |
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{ |
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if (!is_array($payload)) { |
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return false; |
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} |
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$headerValid = array_key_exists('jsonrpc', $payload) && $payload['jsonrpc'] === '2.0'; |
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$methodValid = array_key_exists('method', $payload) && is_string($payload['method']); |
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$idValid = !array_key_exists('id', $payload); |
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// This member MAY be omitted |
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$paramsValid = true; |
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if (array_key_exists('params', $payload) && !is_array($payload['params'])) { |
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$paramsValid = false; |
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} |
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return $headerValid && $methodValid && $paramsValid && $idValid; |
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} |
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/** |
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* @param mixed $record |
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* |
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* @return mixed |
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*/ |
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private function preParse($record) |
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{ |
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return $this->preParse->handle(new Container($this, $record))->last(); |
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} |
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/** |
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* @param AbstractCall $result |
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* |
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* @return AbstractCall |
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*/ |
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private function postParse(AbstractCall $result): AbstractCall |
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{ |
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return $this->postParse->handle(new Container($this, $result))->last(); |
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} |
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} |
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vaderangry /
PhpJsonRpc
Loading history...
Duplicated code is one of the most pungent code smells. If you need to duplicate the same code in three or more different places, we strongly encourage you to look into extracting the code into a single class or operation.
You can also find more detailed suggestions in the “Code” section of your repository.