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<?php |
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/** |
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* This file is part of the tarantool/client package. |
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* |
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* (c) Eugene Leonovich <[email protected]> |
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* |
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* For the full copyright and license information, please view the LICENSE |
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* file that was distributed with this source code. |
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*/ |
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declare(strict_types=1); |
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namespace Tarantool\Client\Handler; |
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use Tarantool\Client\Connection\Connection; |
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use Tarantool\Client\Middleware\Middleware; |
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use Tarantool\Client\Packer\Packer; |
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use Tarantool\Client\Request\Request; |
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use Tarantool\Client\Response; |
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final class MiddlewareHandler implements Handler |
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{ |
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/** @var Handler */ |
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private $handler; |
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/** @var Middleware[] */ |
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private $middleware; |
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/** @var int */ |
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private $index = 0; |
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/** |
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* @param Handler $handler |
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* @param Middleware[] $middleware |
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*/ |
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private function __construct($handler, $middleware) |
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{ |
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$this->handler = $handler; |
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$this->middleware = $middleware; |
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} |
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/** |
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* @param Middleware[] $middleware |
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*/ |
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public static function append(Handler $handler, array $middleware) : Handler |
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{ |
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if (!$handler instanceof self) { |
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return new self($handler, $middleware); |
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} |
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$handler = clone $handler; |
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$handler->middleware = \array_merge($handler->middleware, $middleware); |
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return $handler; |
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} |
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/** |
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* @param Middleware[] $middleware |
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*/ |
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public static function prepend(Handler $handler, array $middleware) : Handler |
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{ |
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if (!$handler instanceof self) { |
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return new self($handler, $middleware); |
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} |
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$handler = clone $handler; |
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$handler->middleware = \array_merge($middleware, $handler->middleware); |
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return $handler; |
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} |
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public function handle(Request $request) : Response |
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{ |
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if (!isset($this->middleware[$this->index])) { |
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return $this->handler->handle($request); |
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} |
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$new = clone $this; |
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++$new->index; |
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return $this->middleware[$this->index]->process($request, $new); |
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} |
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public function getConnection() : Connection |
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{ |
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return $this->handler->getConnection(); |
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} |
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public function getPacker() : Packer |
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{ |
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return $this->handler->getPacker(); |
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} |
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} |
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tarantool-php /
client
