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<?php |
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namespace Smoren\EventRouter\Components; |
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use Smoren\EventRouter\Interfaces\EventConfigInterface; |
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use Smoren\EventRouter\Interfaces\EventInterface; |
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use Smoren\EventRouter\Interfaces\EventRouterInterface; |
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use Smoren\EventRouter\Interfaces\EventRouteRuleInterface; |
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use Smoren\EventRouter\Interfaces\LoggerInterface; |
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use Smoren\EventRouter\Exceptions\EventRouterException; |
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/** |
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* Event router |
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*/ |
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class EventRouter implements EventRouterInterface |
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{ |
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/** |
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* @var EventRouterMap map for storing event route rules |
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*/ |
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protected EventRouterMap $map; |
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/** |
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* @var int|null max recursion level of handling events |
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*/ |
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protected ?int $maxDepthLevelCount; |
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/** |
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* @var LoggerInterface logger |
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*/ |
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protected LoggerInterface $logger; |
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/** |
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* EventRouter constructor |
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* @param int|null $maxDepthLevelCount |
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* @param LoggerInterface $logger |
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*/ |
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public function __construct(?int $maxDepthLevelCount, LoggerInterface $logger) |
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{ |
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$this->maxDepthLevelCount = $maxDepthLevelCount; |
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$this->map = new EventRouterMap(); |
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$this->logger = $logger; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function on(EventConfigInterface $config, callable $handler): self |
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{ |
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$this->map->add($config, $handler); |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function register(EventRouteRuleInterface $routeRule): self |
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{ |
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return $this->on($routeRule->getConfig(), $routeRule->getHandler()); |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function send(EventInterface $event): self |
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{ |
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$this->_handle($event); |
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return $this; |
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} |
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/** |
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* {@inheritDoc} |
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*/ |
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public function getLog(): array |
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{ |
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return $this->logger->getLog(); |
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} |
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/** |
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* Internal method for recursive event handling |
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* @param EventInterface $event event to handle |
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* @param int $depthLevelCount current recursion level |
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* @return void |
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* @throws EventRouterException |
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*/ |
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protected function _handle(EventInterface $event, int $depthLevelCount = 0) |
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{ |
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if($this->maxDepthLevelCount !== null && $depthLevelCount >= $this->maxDepthLevelCount) { |
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throw new EventRouterException( |
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'max depth level reached', |
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EventRouterException::MAX_DEPTH_LEVEL_REACHED, |
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null, |
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['max_depth_level_count' => $this->maxDepthLevelCount] |
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); |
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} |
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foreach($this->map->get($event) as $handler) { |
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$result = $handler($event); |
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$this->logger->append($event); |
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if($result instanceof EventInterface) { |
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$this->_handle($result, ++$depthLevelCount); |
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} elseif(is_array($result)) { |
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foreach($result as $item) { |
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if($item instanceof EventInterface) { |
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$this->_handle($item, ++$depthLevelCount); |
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} |
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} |
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} |
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} |
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} |
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} |
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Smoren /
event-router-php
