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<?php |
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namespace hiapi\middlewares; |
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use League\Tactician\CommandBus; |
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use League\Tactician\Middleware; |
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use yii\base\InvalidConfigException; |
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use yii\di\Container; |
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/** |
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* Class PerCommandMiddleware |
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* |
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* @author Dmytro Naumenko <[email protected]> |
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*/ |
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class PerCommandMiddleware implements Middleware |
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{ |
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/** |
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* @var array |
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*/ |
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public $commandMiddlewares; // TODO: make private after switching to yiisoft/di |
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/** |
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* @var Container |
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*/ |
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private $di; |
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public function __construct(Container $di) |
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{ |
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$this->di = $di; |
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} |
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/** |
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* @param $command |
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* @return CommandBus|null |
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* @throws InvalidConfigException |
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* @throws \yii\di\NotInstantiableException |
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*/ |
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private function getBusForCommand($command): ?CommandBus |
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{ |
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$className = get_class($command); |
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if (!isset($this->commandMiddlewares[$className])) { |
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return null; |
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} |
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/** |
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* @var Middleware[] |
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*/ |
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$middlewares = []; |
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foreach ($this->commandMiddlewares[$className] as $middleware) { |
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if (is_array($middleware)) { |
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$middlewares[] = $this->di->get(array_shift($middleware), $middleware); |
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} elseif (is_string($middleware)) { |
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$middlewares[] = $this->di->get($middleware); |
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} else { |
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throw new InvalidConfigException('Unsupported middleware config'); |
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} |
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} |
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return new CommandBus($middlewares); |
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} |
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/** |
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* @param object $command |
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* @param callable $next |
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* |
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* @return mixed |
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*/ |
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public function execute($command, callable $next) |
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{ |
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$bus = $this->getBusForCommand($command); |
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if ($bus === null) { |
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return $next($command); |
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} |
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return $next($bus->handle($command)); |
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} |
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/** |
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* @return array |
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*/ |
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public function getCommandMiddlewares(): array |
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{ |
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return $this->commandMiddlewares; |
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} |
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/** |
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* @param array $commandMiddlewares |
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*/ |
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public function setCommandMiddlewares(array $commandMiddlewares): void |
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{ |
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$this->commandMiddlewares = $commandMiddlewares; |
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} |
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} |
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