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<?php |
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namespace Gendoria\CommandQueue\ProcessorFactory; |
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use Gendoria\CommandQueue\Command\CommandInterface; |
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use Gendoria\CommandQueue\CommandProcessor\CommandProcessorInterface; |
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use Gendoria\CommandQueue\ProcessorFactory\Exception\MultipleProcessorsException; |
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use Gendoria\CommandQueue\ProcessorFactory\Exception\ProcessorNotFoundException; |
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use InvalidArgumentException; |
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use Psr\Log\LoggerInterface; |
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use Psr\Log\NullLogger; |
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use ReflectionClass; |
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/** |
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* Command Processor factory - used for registering and retrieving command processor. |
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* |
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* @author Tomasz Struczyński <[email protected]> |
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*/ |
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class ProcessorFactory implements ProcessorFactoryInterface |
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{ |
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/** |
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* Array of registered command processors. |
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* |
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* @var CommandProcessorInterface[] |
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*/ |
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private $commandTypes = array(); |
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/** |
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* Logger instance. |
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* |
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* @var LoggerInterface |
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*/ |
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private $logger; |
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/** |
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* Class constructor. |
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* |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct(LoggerInterface $logger = null) |
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{ |
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$this->logger = $logger ? $logger : new NullLogger(); |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function registerProcessorForCommand($commandClassName, CommandProcessorInterface $service) |
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{ |
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if (!class_exists($commandClassName)) { |
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throw new InvalidArgumentException('Registering service for non existing command class.'); |
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} |
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$classData = new ReflectionClass($commandClassName); |
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if (!$classData->implementsInterface('Gendoria\CommandQueue\Command\CommandInterface')) { |
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throw new InvalidArgumentException('Command class has to implement CommandInterface interface.'); |
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} |
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if (array_key_exists($commandClassName, $this->commandTypes)) { |
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throw new MultipleProcessorsException($commandClassName); |
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} |
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$this->commandTypes[$commandClassName] = $service; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function getProcessor(CommandInterface $command) |
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{ |
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if (!array_key_exists(get_class($command), $this->commandTypes) || !$this->commandTypes[get_class($command)]->supports($command)) { |
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throw new ProcessorNotFoundException('No processor registered for given command class: '.get_class($command)); |
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} |
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return $this->commandTypes[get_class($command)]; |
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} |
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/** |
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* {@inheritdoc} |
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*/ |
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public function hasProcessor($commandClassName) |
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{ |
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return array_key_exists($commandClassName, $this->commandTypes); |
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} |
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} |
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Gendoria /
command-queue
